Category: Android Tutorials

May 13, 2019

Accessing Contacts from your application

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">
    <Button
        android:id="@+id/btnload"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:gravity="center"
        android:text="View contacts"
        android:textSize="25sp"
        android:layout_marginTop="20dp"/>
    <TextView
        android:id="@+id/txtname"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:layout_marginTop="10dp"/>
    <TextView
        android:id="@+id/txtphno"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:layout_marginTop="10dp"/>
</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:orientation="vertical">

<Button

android:id="@+id/btnload"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_gravity="center"

android:gravity="center"

android:text="View contacts"

android:textSize="25sp"

android:layout_marginTop="20dp"/>

<TextView

android:id="@+id/txtname"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_gravity="center_horizontal"

android:layout_marginTop="10dp"/>

<TextView

android:id="@+id/txtphno"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_gravity="center_horizontal"

android:layout_marginTop="10dp"/>

</LinearLayout>

MainActivity.xml

package com.androindian.contacts;

import android.Manifest;
import android.annotation.TargetApi;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.ContentResolver;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.database.Cursor;
import android.net.Uri;
import android.os.Build;
import android.provider.ContactsContract;
import android.support.annotation.NonNull;
import android.support.annotation.RequiresApi;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;

import java.util.ArrayList;
import java.util.List;

public class MainActivity extends AppCompatActivity {

    Button btnview;
    TextView txtname, txtphno;
    static final int PICK_CONTACT = 1;
    String st;
    final private int REQUEST_MULTIPLE_PERMISSIONS = 124;

    @RequiresApi(api = Build.VERSION_CODES.M)
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        AccessContact();
        btnview = (Button) findViewById(R.id.btnload);
        txtname = (TextView) findViewById(R.id.txtname);
        txtphno = (TextView) findViewById(R.id.txtphno);

        btnview.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(Intent.ACTION_PICK, ContactsContract.Contacts.CONTENT_URI);
                startActivityForResult(intent, PICK_CONTACT);
            }
        });
    }

    @RequiresApi(api = Build.VERSION_CODES.M)
    private void AccessContact() {
        List<String> permissionsNeeded = new ArrayList<String>();
        final List<String> permissionsList = new ArrayList<String>();
        if (!addPermission(permissionsList, Manifest.permission.READ_CONTACTS))
            permissionsNeeded.add("Read Contacts");
        if (!addPermission(permissionsList, Manifest.permission.WRITE_CONTACTS))
            permissionsNeeded.add("Write Contacts");


        if (permissionsList.size() > 0) {
            if (permissionsNeeded.size() > 0) {
                String message = "You need to grant access to " + permissionsNeeded.get(0);
                for (int i = 1; i < permissionsNeeded.size(); i++)
                    message = message + ", " + permissionsNeeded.get(i);
                showMessageOKCancel(message,
                        new DialogInterface.OnClickListener() {
                            @RequiresApi(api = Build.VERSION_CODES.M)
                            @Override
                            public void onClick(DialogInterface dialog, int which) {
                                requestPermissions(permissionsList.toArray(new String[permissionsList.size()]),
                                        REQUEST_MULTIPLE_PERMISSIONS);
                            }
                        });
                return;
            }
            requestPermissions(permissionsList.toArray(new String[permissionsList.size()]),
                    REQUEST_MULTIPLE_PERMISSIONS);
            return;
        }
    }


    @TargetApi(Build.VERSION_CODES.M)
    private boolean addPermission(List<String> permissionsList, String permission) {
        if (checkSelfPermission(permission) != PackageManager.PERMISSION_GRANTED) {
            permissionsList.add(permission);

            if (!shouldShowRequestPermissionRationale(permission))
                return false;
        }
        return true;
    }

    private void showMessageOKCancel(String message, DialogInterface.OnClickListener okListener) {
        new AlertDialog.Builder(MainActivity.this)
                .setMessage(message)
                .setPositiveButton("OK", okListener)
                .setNegativeButton("Cancel", null)
                .create()
                .show();
    }

    public void onActivityResult(int reqCode, int resultCode, Intent data) {
        super.onActivityResult(reqCode, resultCode, data);
        switch (reqCode) {
            case (PICK_CONTACT):
                if (resultCode == Activity.RESULT_OK) {
                    Uri contactData = data.getData();
                    Cursor c = managedQuery(contactData, null, null, null, null);
                    if (c.moveToFirst()) {
                        String id = c.getString(c.getColumnIndexOrThrow(ContactsContract.Contacts._ID));
                        String hasPhone = c.getString(c.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER));
                        try {
                            if (hasPhone.equalsIgnoreCase("1")) {
                                Cursor phones = getContentResolver().query(
                                        ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null,
                                        ContactsContract.CommonDataKinds.Phone.CONTACT_ID + " = " + id,
                                        null, null);
                                phones.moveToFirst();
                                String cNumber = phones.getString(phones.getColumnIndex("data1"));
                                System.out.println("number is:" + cNumber);
                                txtphno.setText("Phone Number is: "+cNumber);
                            }
                            String name = c.getString(c.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
                            txtname.setText("Name is: "+name);

                        }
                        catch (Exception ex)
                        {
                            Toast.makeText(this, "error", Toast.LENGTH_SHORT).show();
                        }
                    }
                }
                break;
        }
    }
}

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package com.androindian.contacts;

import android.Manifest;

import android.annotation.TargetApi;

import android.app.Activity;

import android.app.AlertDialog;

import android.content.ContentResolver;

import android.content.DialogInterface;

import android.content.Intent;

import android.content.pm.PackageManager;

import android.database.Cursor;

import android.net.Uri;

import android.os.Build;

import android.provider.ContactsContract;

import android.support.annotation.NonNull;

import android.support.annotation.RequiresApi;

import android.support.v4.app.ActivityCompat;

import android.support.v4.content.ContextCompat;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.util.Log;

import android.view.View;

import android.widget.Button;

import android.widget.TextView;

import android.widget.Toast;

import java.util.ArrayList;

import java.util.List;

public class MainActivity extends AppCompatActivity {

Button btnview;

TextView txtname, txtphno;

static final int PICK_CONTACT = 1;

String st;

final private int REQUEST_MULTIPLE_PERMISSIONS = 124;

@RequiresApi(api = Build.VERSION_CODES.M)

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

AccessContact();

btnview = (Button) findViewById(R.id.btnload);

txtname = (TextView) findViewById(R.id.txtname);

txtphno = (TextView) findViewById(R.id.txtphno);

btnview.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v) {

Intent intent = new Intent(Intent.ACTION_PICK, ContactsContract.Contacts.CONTENT_URI);

startActivityForResult(intent, PICK_CONTACT);

}

});

}

@RequiresApi(api = Build.VERSION_CODES.M)

private void AccessContact() {

List<String> permissionsNeeded = new ArrayList<String>();

final List<String> permissionsList = new ArrayList<String>();

if (!addPermission(permissionsList, Manifest.permission.READ_CONTACTS))

permissionsNeeded.add("Read Contacts");

if (!addPermission(permissionsList, Manifest.permission.WRITE_CONTACTS))

permissionsNeeded.add("Write Contacts");

if (permissionsList.size() > 0) {

if (permissionsNeeded.size() > 0) {

String message = "You need to grant access to " + permissionsNeeded.get(0);

for (int i = 1; i < permissionsNeeded.size(); i++)

message = message + ", " + permissionsNeeded.get(i);

showMessageOKCancel(message,

new DialogInterface.OnClickListener() {

@RequiresApi(api = Build.VERSION_CODES.M)

@Override

public void onClick(DialogInterface dialog, int which) {

requestPermissions(permissionsList.toArray(new String[permissionsList.size()]),

REQUEST_MULTIPLE_PERMISSIONS);

}

});

return;

}

requestPermissions(permissionsList.toArray(new String[permissionsList.size()]),

REQUEST_MULTIPLE_PERMISSIONS);

return;

}

@TargetApi(Build.VERSION_CODES.M)

private boolean addPermission(List<String> permissionsList, String permission) {

if (checkSelfPermission(permission) != PackageManager.PERMISSION_GRANTED) {

permissionsList.add(permission);

if (!shouldShowRequestPermissionRationale(permission))

return false;

}

return true;

}

private void showMessageOKCancel(String message, DialogInterface.OnClickListener okListener) {

new AlertDialog.Builder(MainActivity.this)

.setMessage(message)

.setPositiveButton("OK", okListener)

.setNegativeButton("Cancel", null)

.create()

.show();

}

public void onActivityResult(int reqCode, int resultCode, Intent data) {

super.onActivityResult(reqCode, resultCode, data);

switch (reqCode) {

case (PICK_CONTACT):

if (resultCode == Activity.RESULT_OK) {

Uri contactData = data.getData();

Cursor c = managedQuery(contactData, null, null, null, null);

if (c.moveToFirst()) {

String id = c.getString(c.getColumnIndexOrThrow(ContactsContract.Contacts._ID));

String hasPhone = c.getString(c.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER));

try {

if (hasPhone.equalsIgnoreCase("1")) {

Cursor phones = getContentResolver().query(

ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null,

ContactsContract.CommonDataKinds.Phone.CONTACT_ID + " = " + id,

null, null);

phones.moveToFirst();

String cNumber = phones.getString(phones.getColumnIndex("data1"));

System.out.println("number is:" + cNumber);

txtphno.setText("Phone Number is: "+cNumber);

}

String name = c.getString(c.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));

txtname.setText("Name is: "+name);

}

catch (Exception ex)

{

Toast.makeText(this, "error", Toast.LENGTH_SHORT).show();

}

break;

}

androidmanifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.androindian.contacts">
    <uses-permission android:name="android.permission.READ_CONTACTS"></uses-permission>
    <uses-permission android:name="android.permission.WRITE_CONTACTS"></uses-permission>
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"></uses-permission>

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme"
        android:usesCleartextTraffic="true">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

package="com.androindian.contacts">

<uses-permission android:name="android.permission.READ_CONTACTS"></uses-permission>

<uses-permission android:name="android.permission.WRITE_CONTACTS"></uses-permission>

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"></uses-permission>

<application

android:allowBackup="true"

android:icon="@mipmap/ic_launcher"

android:label="@string/app_name"

android:roundIcon="@mipmap/ic_launcher_round"

android:supportsRtl="true"

android:theme="@style/AppTheme"

android:usesCleartextTraffic="true">

<intent-filter>

</intent-filter>

</activity>

</application>

</manifest>

Login And Registration with SQLite with Material Design

Android Tutorials

May 13, 2019

Login And Registration with SQLite with Material Design

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.NestedScrollView xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/nestedScrollView"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@color/colorBackground"
    android:paddingBottom="20dp"
    android:paddingLeft="20dp"
    android:paddingRight="20dp"
    android:paddingTop="20dp"
   >

    <android.support.v7.widget.LinearLayoutCompat
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical">

        <android.support.v7.widget.AppCompatImageView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center_horizontal"
            android:layout_marginTop="40dp"
            android:src="@mipmap/ic_launcher" />

        <android.support.design.widget.TextInputLayout
            android:id="@+id/textInputLayoutEmail"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="40dp">

            <android.support.design.widget.TextInputEditText
                android:id="@+id/textInputEditTextEmail"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:hint="@string/hint_email"
                android:inputType="text"
                android:maxLines="1"
                android:textColor="@android:color/white" />
        </android.support.design.widget.TextInputLayout>

        <android.support.design.widget.TextInputLayout
            android:id="@+id/textInputLayoutPassword"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="20dp">

            <android.support.design.widget.TextInputEditText
                android:id="@+id/textInputEditTextPassword"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:hint="@string/hint_password"
                android:inputType="textPassword"
                android:maxLines="1"
                android:textColor="@android:color/white" />
        </android.support.design.widget.TextInputLayout>

        <android.support.v7.widget.AppCompatButton
            android:id="@+id/appCompatButtonLogin"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="40dp"
            android:background="@color/colorTextHint"
            android:text="@string/text_login" />

        <android.support.v7.widget.AppCompatTextView
            android:id="@+id/textViewLinkRegister"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="30dp"
            android:gravity="center"
            android:text="@string/text_not_member"
            android:textSize="16dp" />
    </android.support.v7.widget.LinearLayoutCompat>
</android.support.v4.widget.NestedScrollView>

<?xml version="1.0" encoding="utf-8"?>

<android.support.v4.widget.NestedScrollView xmlns:android="http://schemas.android.com/apk/res/android"

xmlns:tools="http://schemas.android.com/tools"

android:id="@+id/nestedScrollView"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:background="@color/colorBackground"

android:paddingBottom="20dp"

android:paddingLeft="20dp"

android:paddingRight="20dp"

android:paddingTop="20dp"

<android.support.v7.widget.LinearLayoutCompat

android:layout_width="match_parent"

android:layout_height="match_parent"

android:orientation="vertical">

<android.support.v7.widget.AppCompatImageView

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_gravity="center_horizontal"

android:layout_marginTop="40dp"

android:src="@mipmap/ic_launcher" />

<android.support.design.widget.TextInputLayout

android:id="@+id/textInputLayoutEmail"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:layout_marginTop="40dp">

<android.support.design.widget.TextInputEditText

android:id="@+id/textInputEditTextEmail"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:hint="@string/hint_email"

android:inputType="text"

android:maxLines="1"

android:textColor="@android:color/white" />

</android.support.design.widget.TextInputLayout>

<android.support.design.widget.TextInputLayout

android:id="@+id/textInputLayoutPassword"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:layout_marginTop="20dp">

<android.support.design.widget.TextInputEditText

android:id="@+id/textInputEditTextPassword"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:hint="@string/hint_password"

android:inputType="textPassword"

android:maxLines="1"

android:textColor="@android:color/white" />

</android.support.design.widget.TextInputLayout>

<android.support.v7.widget.AppCompatButton

android:id="@+id/appCompatButtonLogin"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:layout_marginTop="40dp"

android:background="@color/colorTextHint"

android:text="@string/text_login" />

<android.support.v7.widget.AppCompatTextView

android:id="@+id/textViewLinkRegister"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:layout_marginTop="30dp"

android:gravity="center"

android:text="@string/text_not_member"

android:textSize="16dp" />

</android.support.v7.widget.LinearLayoutCompat>

</android.support.v4.widget.NestedScrollView>

MainActivity.java

package com.androindian.sqlit;

import android.content.Intent;
import android.support.design.widget.Snackbar;
import android.support.design.widget.TextInputEditText;
import android.support.design.widget.TextInputLayout;
import android.support.v4.widget.NestedScrollView;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.AppCompatButton;
import android.support.v7.widget.AppCompatTextView;
import android.view.View;

public class MainActivity  extends AppCompatActivity implements View.OnClickListener {
private final AppCompatActivity activity = MainActivity.this;

private NestedScrollView nestedScrollView;

private TextInputLayout textInputLayoutEmail;
private TextInputLayout textInputLayoutPassword;

private TextInputEditText textInputEditTextEmail;
private TextInputEditText textInputEditTextPassword;

private AppCompatButton appCompatButtonLogin;

private AppCompatTextView textViewLinkRegister;

private InputValidation inputValidation;
private DatabaseHelper databaseHelper;

@Override
protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        getSupportActionBar().hide();

        initViews();
        initListeners();
        initObjects();
        }

/**
 * This method is to initialize views
 */
private void initViews() {

        nestedScrollView = (NestedScrollView) findViewById(R.id.nestedScrollView);

        textInputLayoutEmail = (TextInputLayout) findViewById(R.id.textInputLayoutEmail);
        textInputLayoutPassword = (TextInputLayout) findViewById(R.id.textInputLayoutPassword);

        textInputEditTextEmail = (TextInputEditText) findViewById(R.id.textInputEditTextEmail);
        textInputEditTextPassword = (TextInputEditText) findViewById(R.id.textInputEditTextPassword);

        appCompatButtonLogin = (AppCompatButton) findViewById(R.id.appCompatButtonLogin);

        textViewLinkRegister = (AppCompatTextView) findViewById(R.id.textViewLinkRegister);

        }

/**
 * This method is to initialize listeners
 */
private void initListeners() {
        appCompatButtonLogin.setOnClickListener(this);
        textViewLinkRegister.setOnClickListener(this);
        }

/**
 * This method is to initialize objects to be used
 */
private void initObjects() {
        databaseHelper = new DatabaseHelper(activity);
        inputValidation = new InputValidation(activity);

        }

/**
 * This implemented method is to listen the click on view
 *
 * @param v
 */
@Override
public void onClick(View v) {
        switch (v.getId()) {
        case R.id.appCompatButtonLogin:
        verifyFromSQLite();
        break;
        case R.id.textViewLinkRegister:
        // Navigate to RegisterActivity
        Intent intentRegister = new Intent(getApplicationContext(), RegisterActivity.class);
        startActivity(intentRegister);
        break;
        }
        }

/**
 * This method is to validate the input text fields and verify login credentials from SQLite
 */
private void verifyFromSQLite() {
        if (!inputValidation.isInputEditTextFilled(textInputEditTextEmail, textInputLayoutEmail, getString(R.string.error_message_email))) {
        return;
        }
        if (!inputValidation.isInputEditTextEmail(textInputEditTextEmail, textInputLayoutEmail, getString(R.string.error_message_email))) {
        return;
        }
        if (!inputValidation.isInputEditTextFilled(textInputEditTextPassword, textInputLayoutPassword, getString(R.string.error_message_email))) {
        return;
        }

        if (databaseHelper.checkUser(textInputEditTextEmail.getText().toString().trim()
        , textInputEditTextPassword.getText().toString().trim())) {


        Intent accountsIntent = new Intent(activity, UsersListActivity.class);
        accountsIntent.putExtra("EMAIL", textInputEditTextEmail.getText().toString().trim());
        emptyInputEditText();
        startActivity(accountsIntent);


        } else {
        // Snack Bar to show success message that record is wrong
        Snackbar.make(nestedScrollView, getString(R.string.error_valid_email_password), Snackbar.LENGTH_LONG).show();
        }
        }

/**
 * This method is to empty all input edit text
 */
private void emptyInputEditText() {
        textInputEditTextEmail.setText(null);
        textInputEditTextPassword.setText(null);
        }
        }

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package com.androindian.sqlit;

import android.content.Intent;

import android.support.design.widget.Snackbar;

import android.support.design.widget.TextInputEditText;

import android.support.design.widget.TextInputLayout;

import android.support.v4.widget.NestedScrollView;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.support.v7.widget.AppCompatButton;

import android.support.v7.widget.AppCompatTextView;

import android.view.View;

public class MainActivity extends AppCompatActivity implements View.OnClickListener {

private final AppCompatActivity activity = MainActivity.this;

private NestedScrollView nestedScrollView;

private TextInputLayout textInputLayoutEmail;

private TextInputLayout textInputLayoutPassword;

private TextInputEditText textInputEditTextEmail;

private TextInputEditText textInputEditTextPassword;

private AppCompatButton appCompatButtonLogin;

private AppCompatTextView textViewLinkRegister;

private InputValidation inputValidation;

private DatabaseHelper databaseHelper;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

getSupportActionBar().hide();

initViews();

initListeners();

initObjects();

}

/**

* This method is to initialize views

private void initViews() {

nestedScrollView = (NestedScrollView) findViewById(R.id.nestedScrollView);

textInputLayoutEmail = (TextInputLayout) findViewById(R.id.textInputLayoutEmail);

textInputLayoutPassword = (TextInputLayout) findViewById(R.id.textInputLayoutPassword);

textInputEditTextEmail = (TextInputEditText) findViewById(R.id.textInputEditTextEmail);

textInputEditTextPassword = (TextInputEditText) findViewById(R.id.textInputEditTextPassword);

appCompatButtonLogin = (AppCompatButton) findViewById(R.id.appCompatButtonLogin);

textViewLinkRegister = (AppCompatTextView) findViewById(R.id.textViewLinkRegister);

}

/**

* This method is to initialize listeners

private void initListeners() {

appCompatButtonLogin.setOnClickListener(this);

textViewLinkRegister.setOnClickListener(this);

}

/**

* This method is to initialize objects to be used

private void initObjects() {

databaseHelper = new DatabaseHelper(activity);

inputValidation = new InputValidation(activity);

}

/**

* This implemented method is to listen the click on view

* @param v

@Override

public void onClick(View v) {

switch (v.getId()) {

case R.id.appCompatButtonLogin:

verifyFromSQLite();

break;

case R.id.textViewLinkRegister:

// Navigate to RegisterActivity

Intent intentRegister = new Intent(getApplicationContext(), RegisterActivity.class);

startActivity(intentRegister);

break;

}

/**

* This method is to validate the input text fields and verify login credentials from SQLite

private void verifyFromSQLite() {

if (!inputValidation.isInputEditTextFilled(textInputEditTextEmail, textInputLayoutEmail, getString(R.string.error_message_email))) {

return;

}

if (!inputValidation.isInputEditTextEmail(textInputEditTextEmail, textInputLayoutEmail, getString(R.string.error_message_email))) {

return;

}

if (!inputValidation.isInputEditTextFilled(textInputEditTextPassword, textInputLayoutPassword, getString(R.string.error_message_email))) {

return;

}

if (databaseHelper.checkUser(textInputEditTextEmail.getText().toString().trim()

, textInputEditTextPassword.getText().toString().trim())) {

Intent accountsIntent = new Intent(activity, UsersListActivity.class);

accountsIntent.putExtra("EMAIL", textInputEditTextEmail.getText().toString().trim());

emptyInputEditText();

startActivity(accountsIntent);

} else {

// Snack Bar to show success message that record is wrong

Snackbar.make(nestedScrollView, getString(R.string.error_valid_email_password), Snackbar.LENGTH_LONG).show();

}

/**

* This method is to empty all input edit text

private void emptyInputEditText() {

textInputEditTextEmail.setText(null);

textInputEditTextPassword.setText(null);

}

RegisterActivity.java

package com.androindian.sqlit;

import android.support.annotation.Nullable;
import android.support.design.widget.Snackbar;
import android.support.design.widget.TextInputEditText;
import android.support.design.widget.TextInputLayout;
import android.support.v4.widget.NestedScrollView;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.AppCompatButton;
import android.support.v7.widget.AppCompatTextView;
import android.view.View;

public class RegisterActivity extends AppCompatActivity implements View.OnClickListener {

    AppCompatActivity activity = RegisterActivity.this;
    NestedScrollView nestedScrollView;

    TextInputLayout textInputLayoutName,textInputLayoutEmail,
    textInputLayoutPassword, textInputLayoutConfirmPassword;

   TextInputEditText textInputEditTextName,textInputEditTextEmail,
    textInputEditTextPassword, textInputEditTextConfirmPassword;

    AppCompatButton appCompatButtonRegister;
   AppCompatTextView appCompatTextViewLoginLink;

 InputValidation inputValidation;
  DatabaseHelper databaseHelper;
  User user;

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_register);
        getSupportActionBar().hide();

        initViews();
        initListeners();
        initObjects();
    }

    /**
     * This method is to initialize views
     */
    private void initViews() {
        nestedScrollView =  findViewById(R.id.nestedScrollView);

        textInputLayoutName = findViewById(R.id.textInputLayoutName);
        textInputLayoutEmail =  findViewById(R.id.textInputLayoutEmail);
        textInputLayoutPassword = findViewById(R.id.textInputLayoutPassword);
        textInputLayoutConfirmPassword =  findViewById(R.id.textInputLayoutConfirmPassword);

        textInputEditTextName =  findViewById(R.id.textInputEditTextName);
        textInputEditTextEmail =  findViewById(R.id.textInputEditTextEmail);
        textInputEditTextPassword =  findViewById(R.id.textInputEditTextPassword);
        textInputEditTextConfirmPassword =  findViewById(R.id.textInputEditTextConfirmPassword);

        appCompatButtonRegister = findViewById(R.id.appCompatButtonRegister);

        appCompatTextViewLoginLink =  findViewById(R.id.appCompatTextViewLoginLink);

    }

    /**
     * This method is to initialize listeners
     */
    private void initListeners() {
        appCompatButtonRegister.setOnClickListener(this);
        appCompatTextViewLoginLink.setOnClickListener(this);

    }

    /**
     * This method is to initialize objects to be used
     */
    private void initObjects() {
        inputValidation = new InputValidation(activity);
        databaseHelper = new DatabaseHelper(activity);
        user = new User();

    }


    /**
     * This implemented method is to listen the click on view
     *
     * @param v
     */
    @Override
    public void onClick(View v) {
        switch (v.getId()) {

            case R.id.appCompatButtonRegister:
                postDataToSQLite();
                break;

            case R.id.appCompatTextViewLoginLink:
                finish();
                break;
        }
    }

    /**
     * This method is to validate the input text fields and post data to SQLite
     */
    private void postDataToSQLite() {
        if (!inputValidation.isInputEditTextFilled(textInputEditTextName, textInputLayoutName, getString(R.string.error_message_name))) {
            return;
        }
        if (!inputValidation.isInputEditTextFilled(textInputEditTextEmail, textInputLayoutEmail, getString(R.string.error_message_email))) {
            return;
        }
        if (!inputValidation.isInputEditTextEmail(textInputEditTextEmail, textInputLayoutEmail, getString(R.string.error_message_email))) {
            return;
        }
        if (!inputValidation.isInputEditTextFilled(textInputEditTextPassword, textInputLayoutPassword, getString(R.string.error_message_password))) {
            return;
        }
        if (!inputValidation.isInputEditTextMatches(textInputEditTextPassword, textInputEditTextConfirmPassword,
                textInputLayoutConfirmPassword, getString(R.string.error_password_match))) {
            return;
        }

        if (!databaseHelper.checkUser(textInputEditTextEmail.getText().toString().trim())) {

            user.setName(textInputEditTextName.getText().toString().trim());
            user.setEmail(textInputEditTextEmail.getText().toString().trim());
            user.setPassword(textInputEditTextPassword.getText().toString().trim());

            databaseHelper.addUser(user);

            // Snack Bar to show success message that record saved successfully
            Snackbar.make(nestedScrollView, getString(R.string.success_message), Snackbar.LENGTH_LONG).show();
            emptyInputEditText();


        } else {
            // Snack Bar to show error message that record already exists
            Snackbar.make(nestedScrollView, getString(R.string.error_email_exists), Snackbar.LENGTH_LONG).show();
        }


    }

    /**
     * This method is to empty all input edit text
     */
    private void emptyInputEditText() {
        textInputEditTextName.setText(null);
        textInputEditTextEmail.setText(null);
        textInputEditTextPassword.setText(null);
        textInputEditTextConfirmPassword.setText(null);
    }
}

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package com.androindian.sqlit;

import android.support.annotation.Nullable;

import android.support.design.widget.Snackbar;

import android.support.design.widget.TextInputEditText;

import android.support.design.widget.TextInputLayout;

import android.support.v4.widget.NestedScrollView;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.support.v7.widget.AppCompatButton;

import android.support.v7.widget.AppCompatTextView;

import android.view.View;

public class RegisterActivity extends AppCompatActivity implements View.OnClickListener {

AppCompatActivity activity = RegisterActivity.this;

NestedScrollView nestedScrollView;

TextInputLayout textInputLayoutName,textInputLayoutEmail,

textInputLayoutPassword, textInputLayoutConfirmPassword;

TextInputEditText textInputEditTextName,textInputEditTextEmail,

textInputEditTextPassword, textInputEditTextConfirmPassword;

AppCompatButton appCompatButtonRegister;

AppCompatTextView appCompatTextViewLoginLink;

InputValidation inputValidation;

DatabaseHelper databaseHelper;

User user;

@Override

protected void onCreate(@Nullable Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_register);

getSupportActionBar().hide();

initViews();

initListeners();

initObjects();

}

/**

* This method is to initialize views

private void initViews() {

nestedScrollView = findViewById(R.id.nestedScrollView);

textInputLayoutName = findViewById(R.id.textInputLayoutName);

textInputLayoutEmail = findViewById(R.id.textInputLayoutEmail);

textInputLayoutPassword = findViewById(R.id.textInputLayoutPassword);

textInputLayoutConfirmPassword = findViewById(R.id.textInputLayoutConfirmPassword);

textInputEditTextName = findViewById(R.id.textInputEditTextName);

textInputEditTextEmail = findViewById(R.id.textInputEditTextEmail);

textInputEditTextPassword = findViewById(R.id.textInputEditTextPassword);

textInputEditTextConfirmPassword = findViewById(R.id.textInputEditTextConfirmPassword);

appCompatButtonRegister = findViewById(R.id.appCompatButtonRegister);

appCompatTextViewLoginLink = findViewById(R.id.appCompatTextViewLoginLink);

}

/**

* This method is to initialize listeners

private void initListeners() {

appCompatButtonRegister.setOnClickListener(this);

appCompatTextViewLoginLink.setOnClickListener(this);

}

/**

* This method is to initialize objects to be used

private void initObjects() {

inputValidation = new InputValidation(activity);

databaseHelper = new DatabaseHelper(activity);

user = new User();

}

/**

* This implemented method is to listen the click on view

* @param v

@Override

public void onClick(View v) {

switch (v.getId()) {

case R.id.appCompatButtonRegister:

postDataToSQLite();

break;

case R.id.appCompatTextViewLoginLink:

finish();

break;

}

/**

* This method is to validate the input text fields and post data to SQLite

private void postDataToSQLite() {

if (!inputValidation.isInputEditTextFilled(textInputEditTextName, textInputLayoutName, getString(R.string.error_message_name))) {

return;

}

if (!inputValidation.isInputEditTextFilled(textInputEditTextEmail, textInputLayoutEmail, getString(R.string.error_message_email))) {

return;

}

if (!inputValidation.isInputEditTextEmail(textInputEditTextEmail, textInputLayoutEmail, getString(R.string.error_message_email))) {

return;

}

if (!inputValidation.isInputEditTextFilled(textInputEditTextPassword, textInputLayoutPassword, getString(R.string.error_message_password))) {

return;

}

if (!inputValidation.isInputEditTextMatches(textInputEditTextPassword, textInputEditTextConfirmPassword,

textInputLayoutConfirmPassword, getString(R.string.error_password_match))) {

return;

}

if (!databaseHelper.checkUser(textInputEditTextEmail.getText().toString().trim())) {

user.setName(textInputEditTextName.getText().toString().trim());

user.setEmail(textInputEditTextEmail.getText().toString().trim());

user.setPassword(textInputEditTextPassword.getText().toString().trim());

databaseHelper.addUser(user);

// Snack Bar to show success message that record saved successfully

Snackbar.make(nestedScrollView, getString(R.string.success_message), Snackbar.LENGTH_LONG).show();

emptyInputEditText();

} else {

// Snack Bar to show error message that record already exists

Snackbar.make(nestedScrollView, getString(R.string.error_email_exists), Snackbar.LENGTH_LONG).show();

}

/**

* This method is to empty all input edit text

private void emptyInputEditText() {

textInputEditTextName.setText(null);

textInputEditTextEmail.setText(null);

textInputEditTextPassword.setText(null);

textInputEditTextConfirmPassword.setText(null);

}

activity_register.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.NestedScrollView xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/nestedScrollView"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@color/colorBackground"
    android:paddingBottom="20dp"
    android:paddingLeft="20dp"
    android:paddingRight="20dp"
    android:paddingTop="20dp"
    tools:context=".activities.LoginActivity">

    <android.support.v7.widget.LinearLayoutCompat
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical">

        <android.support.v7.widget.AppCompatImageView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center_horizontal"
            android:layout_marginTop="40dp"
            android:src="@mipmap/ic_launcher" />

        <android.support.design.widget.TextInputLayout
            android:id="@+id/textInputLayoutName"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="40dp">

            <android.support.design.widget.TextInputEditText
                android:id="@+id/textInputEditTextName"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:hint="@string/hint_name"
                android:inputType="text"
                android:maxLines="1"
                android:textColor="@android:color/white" />
        </android.support.design.widget.TextInputLayout>

        <android.support.design.widget.TextInputLayout
            android:id="@+id/textInputLayoutEmail"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="20dp">

            <android.support.design.widget.TextInputEditText
                android:id="@+id/textInputEditTextEmail"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:hint="@string/hint_email"
                android:inputType="text"
                android:maxLines="1"
                android:textColor="@android:color/white" />
        </android.support.design.widget.TextInputLayout>

        <android.support.design.widget.TextInputLayout
            android:id="@+id/textInputLayoutPassword"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="20dp">

            <android.support.design.widget.TextInputEditText
                android:id="@+id/textInputEditTextPassword"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:hint="@string/hint_password"
                android:inputType="textPassword"
                android:maxLines="1"
                android:textColor="@android:color/white" />
        </android.support.design.widget.TextInputLayout>

        <android.support.design.widget.TextInputLayout
            android:id="@+id/textInputLayoutConfirmPassword"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="20dp">

            <android.support.design.widget.TextInputEditText
                android:id="@+id/textInputEditTextConfirmPassword"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:hint="@string/hint_confirm_password"
                android:inputType="textPassword"
                android:maxLines="1"
                android:textColor="@android:color/white" />
        </android.support.design.widget.TextInputLayout>

        <android.support.v7.widget.AppCompatButton
            android:id="@+id/appCompatButtonRegister"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="40dp"
            android:background="@color/colorTextHint"
            android:text="@string/text_register" />

        <android.support.v7.widget.AppCompatTextView
            android:id="@+id/appCompatTextViewLoginLink"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="30dp"
            android:gravity="center"
            android:text="Already a member? Login"
            android:textSize="16dp" />
    </android.support.v7.widget.LinearLayoutCompat>
</android.support.v4.widget.NestedScrollView>

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<?xml version="1.0" encoding="utf-8"?>

<android.support.v4.widget.NestedScrollView xmlns:android="http://schemas.android.com/apk/res/android"

xmlns:tools="http://schemas.android.com/tools"

android:id="@+id/nestedScrollView"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:background="@color/colorBackground"

android:paddingBottom="20dp"

android:paddingLeft="20dp"

android:paddingRight="20dp"

android:paddingTop="20dp"

tools:context=".activities.LoginActivity">

<android.support.v7.widget.LinearLayoutCompat

android:layout_width="match_parent"

android:layout_height="match_parent"

android:orientation="vertical">

<android.support.v7.widget.AppCompatImageView

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_gravity="center_horizontal"

android:layout_marginTop="40dp"

android:src="@mipmap/ic_launcher" />

<android.support.design.widget.TextInputLayout

android:id="@+id/textInputLayoutName"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:layout_marginTop="40dp">

<android.support.design.widget.TextInputEditText

android:id="@+id/textInputEditTextName"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:hint="@string/hint_name"

android:inputType="text"

android:maxLines="1"

android:textColor="@android:color/white" />

</android.support.design.widget.TextInputLayout>

<android.support.design.widget.TextInputLayout

android:id="@+id/textInputLayoutEmail"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:layout_marginTop="20dp">

<android.support.design.widget.TextInputEditText

android:id="@+id/textInputEditTextEmail"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:hint="@string/hint_email"

android:inputType="text"

android:maxLines="1"

android:textColor="@android:color/white" />

</android.support.design.widget.TextInputLayout>

<android.support.design.widget.TextInputLayout

android:id="@+id/textInputLayoutPassword"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:layout_marginTop="20dp">

<android.support.design.widget.TextInputEditText

android:id="@+id/textInputEditTextPassword"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:hint="@string/hint_password"

android:inputType="textPassword"

android:maxLines="1"

android:textColor="@android:color/white" />

</android.support.design.widget.TextInputLayout>

<android.support.design.widget.TextInputLayout

android:id="@+id/textInputLayoutConfirmPassword"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:layout_marginTop="20dp">

<android.support.design.widget.TextInputEditText

android:id="@+id/textInputEditTextConfirmPassword"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:hint="@string/hint_confirm_password"

android:inputType="textPassword"

android:maxLines="1"

android:textColor="@android:color/white" />

</android.support.design.widget.TextInputLayout>

<android.support.v7.widget.AppCompatButton

android:id="@+id/appCompatButtonRegister"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:layout_marginTop="40dp"

android:background="@color/colorTextHint"

android:text="@string/text_register" />

<android.support.v7.widget.AppCompatTextView

android:id="@+id/appCompatTextViewLoginLink"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:layout_marginTop="30dp"

android:gravity="center"

android:text="Already a member? Login"

android:textSize="16dp" />

</android.support.v7.widget.LinearLayoutCompat>

</android.support.v4.widget.NestedScrollView>

strings.xml

<resources>
    <string name="app_name">Login Register</string>
    <string name="text_accounts">All Accounts</string>
    <string name="hint_name">Name</string>
    <string name="hint_email">Email</string>
    <string name="hint_password">Password</string>
    <string name="hint_confirm_password">Confirm Password</string>
    <string name="text_login">Login</string>
    <string name="text_register">Register</string>
    <string name="error_message_name">Enter Full Name</string>
    <string name="error_message_email">Enter Valid Email</string>
    <string name="error_message_age">Enter Age</string>
    <string name="error_message_password">Enter Password</string>
    <string name="success_message">Registration Successful</string>
    <string name="text_not_member">No account yet? Create one</string>
    <string name="text_already_member">Already a member? Login</string>
    <string name="error_email_exists">Email Already Exists</string>
    <string name="error_password_match">Password Does Not Matches</string>
    <string name="error_valid_email_password">Wrong Email or Password</string>
    <string name="action_settings">Settings</string>
    <string name="text_hello">Hello,</string>
    <string name="text_title">Androindian</string>
</resources>

<string name="app_name">Login Register</string>

<string name="text_accounts">All Accounts</string>

<string name="hint_email">Email</string>

<string name="hint_password">Password</string>

<string name="hint_confirm_password">Confirm Password</string>

<string name="text_login">Login</string>

<string name="text_register">Register</string>

<string name="error_message_name">Enter Full Name</string>

<string name="error_message_email">Enter Valid Email</string>

<string name="error_message_age">Enter Age</string>

<string name="error_message_password">Enter Password</string>

<string name="success_message">Registration Successful</string>

<string name="text_not_member">No account yet? Create one</string>

<string name="text_already_member">Already a member? Login</string>

<string name="error_email_exists">Email Already Exists</string>

<string name="error_password_match">Password Does Not Matches</string>

<string name="error_valid_email_password">Wrong Email or Password</string>

<string name="action_settings">Settings</string>

<string name="text_hello">Hello,</string>

<string name="text_title">Androindian</string>

</resources>

styles.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <color name="colorPrimary">#51d8c7</color>
    <color name="colorPrimaryDark">#51d8c7</color>
    <color name="colorAccent">#FFFFFF</color>
    <color name="colorBackground">#413e4f</color>
    <color name="colorText">#FFFFFF</color>
    <color name="colorTextHint">#51d8c7</color>
</resources>

<?xml version="1.0" encoding="utf-8"?>

<color name="colorAccent">#FFFFFF</color>

<color name="colorText">#FFFFFF</color>

</resources>

colors.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <color name="colorPrimary">#51d8c7</color>
    <color name="colorPrimaryDark">#51d8c7</color>
    <color name="colorAccent">#FFFFFF</color>
    <color name="colorBackground">#413e4f</color>
    <color name="colorText">#FFFFFF</color>
    <color name="colorTextHint">#51d8c7</color>
</resources>

<?xml version="1.0" encoding="utf-8"?>

<color name="colorAccent">#FFFFFF</color>

<color name="colorText">#FFFFFF</color>

</resources>

Databasehelper.java

package com.androindian.sqlit;

import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;

import java.util.ArrayList;
import java.util.List;

public class DatabaseHelper extends SQLiteOpenHelper {

    // Database Version
    private static final int DATABASE_VERSION = 1;

    // Database Name
    private static final String DATABASE_NAME = "UserManager.db";

    // User table name
    private static final String TABLE_USER = "user";

    // User Table Columns names
    private static final String COLUMN_USER_ID = "user_id";
    private static final String COLUMN_USER_NAME = "user_name";
    private static final String COLUMN_USER_EMAIL = "user_email";
    private static final String COLUMN_USER_PASSWORD = "user_password";

    // create table sql query
    private String CREATE_USER_TABLE = "CREATE TABLE " + TABLE_USER + "("
            + COLUMN_USER_ID + " INTEGER PRIMARY KEY AUTOINCREMENT," + COLUMN_USER_NAME + " TEXT,"
            + COLUMN_USER_EMAIL + " TEXT," + COLUMN_USER_PASSWORD + " TEXT" + ")";

    // drop table sql query
    private String DROP_USER_TABLE = "DROP TABLE IF EXISTS " + TABLE_USER;

    /**
     * Constructor
     *
     * @param context
     */
    public DatabaseHelper(Context context) {
        super(context, DATABASE_NAME, null, DATABASE_VERSION);
    }

    @Override
    public void onCreate(SQLiteDatabase db) {
        db.execSQL(CREATE_USER_TABLE);
    }


    @Override
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {

        //Drop User Table if exist
        db.execSQL(DROP_USER_TABLE);

        // Create tables again
        onCreate(db);

    }

    /**
     * This method is to create user record
     *
     * @param user
     */
    public void addUser(User user) {
        SQLiteDatabase db = this.getWritableDatabase();

        ContentValues values = new ContentValues();
        values.put(COLUMN_USER_NAME, user.getName());
        values.put(COLUMN_USER_EMAIL, user.getEmail());
        values.put(COLUMN_USER_PASSWORD, user.getPassword());

        // Inserting Row
        db.insert(TABLE_USER, null, values);
        db.close();
    }

    /**
     * This method is to fetch all user and return the list of user records
     *
     * @return list
     */
    public List<User> getAllUser() {
        // array of columns to fetch
        String[] columns = {
                COLUMN_USER_ID,
                COLUMN_USER_EMAIL,
                COLUMN_USER_NAME,
                COLUMN_USER_PASSWORD
        };
        // sorting orders
        String sortOrder =
                COLUMN_USER_NAME + " ASC";
        List<User> userList = new ArrayList<User>();

        SQLiteDatabase db = this.getReadableDatabase();

        // query the user table
        /**
         * Here query function is used to fetch records from user table this function works like we use sql query.
         * SQL query equivalent to this query function is
         * SELECT user_id,user_name,user_email,user_password FROM user ORDER BY user_name;
         */
        Cursor cursor = db.query(TABLE_USER, //Table to query
                columns,    //columns to return
                null,        //columns for the WHERE clause
                null,        //The values for the WHERE clause
                null,       //group the rows
                null,       //filter by row groups
                sortOrder); //The sort order


        // Traversing through all rows and adding to list
        if (cursor.moveToFirst()) {
            do {
                User user = new User();
                user.setId(Integer.parseInt(cursor.getString(cursor.getColumnIndex(COLUMN_USER_ID))));
                user.setName(cursor.getString(cursor.getColumnIndex(COLUMN_USER_NAME)));
                user.setEmail(cursor.getString(cursor.getColumnIndex(COLUMN_USER_EMAIL)));
                user.setPassword(cursor.getString(cursor.getColumnIndex(COLUMN_USER_PASSWORD)));
                // Adding user record to list
                userList.add(user);
            } while (cursor.moveToNext());
        }
        cursor.close();
        db.close();

        // return user list
        return userList;
    }

    /**
     * This method to update user record
     *
     * @param user
     */
    public void updateUser(User user) {
        SQLiteDatabase db = this.getWritableDatabase();

        ContentValues values = new ContentValues();
        values.put(COLUMN_USER_NAME, user.getName());
        values.put(COLUMN_USER_EMAIL, user.getEmail());
        values.put(COLUMN_USER_PASSWORD, user.getPassword());

        // updating row
        db.update(TABLE_USER, values, COLUMN_USER_ID + " = ?",
                new String[]{String.valueOf(user.getId())});
        db.close();
    }

    /**
     * This method is to delete user record
     *
     * @param user
     */
    public void deleteUser(User user) {
        SQLiteDatabase db = this.getWritableDatabase();
        // delete user record by id
        db.delete(TABLE_USER, COLUMN_USER_ID + " = ?",
                new String[]{String.valueOf(user.getId())});
        db.close();
    }

    /**
     * This method to check user exist or not
     *
     * @param email
     * @return true/false
     */
    public boolean checkUser(String email) {

        // array of columns to fetch
        String[] columns = {
                COLUMN_USER_ID
        };
        SQLiteDatabase db = this.getReadableDatabase();

        // selection criteria
        String selection = COLUMN_USER_EMAIL + " = ?";

        // selection argument
        String[] selectionArgs = {email};

        // query user table with condition
        /**
         * Here query function is used to fetch records from user table this function works like we use sql query.
         * SQL query equivalent to this query function is
         * SELECT user_id FROM user WHERE user_email = 'jack@androidtutorialshub.com';
         */
        Cursor cursor = db.query(TABLE_USER, //Table to query
                columns,                    //columns to return
                selection,                  //columns for the WHERE clause
                selectionArgs,              //The values for the WHERE clause
                null,                       //group the rows
                null,                      //filter by row groups
                null);                      //The sort order
        int cursorCount = cursor.getCount();
        cursor.close();
        db.close();

        if (cursorCount > 0) {
            return true;
        }

        return false;
    }

    /**
     * This method to check user exist or not
     *
     * @param email
     * @param password
     * @return true/false
     */
    public boolean checkUser(String email, String password) {

        // array of columns to fetch
        String[] columns = {
                COLUMN_USER_ID
        };
        SQLiteDatabase db = this.getReadableDatabase();
        // selection criteria
        String selection = COLUMN_USER_EMAIL + " = ?" + " AND " + COLUMN_USER_PASSWORD + " = ?";

        // selection arguments
        String[] selectionArgs = {email, password};

        // query user table with conditions
        /**
         * Here query function is used to fetch records from user table this function works like we use sql query.
         * SQL query equivalent to this query function is
         * SELECT user_id FROM user WHERE user_email = 'jack@androidtutorialshub.com' AND user_password = 'qwerty';
         */
        Cursor cursor = db.query(TABLE_USER, //Table to query
                columns,                    //columns to return
                selection,                  //columns for the WHERE clause
                selectionArgs,              //The values for the WHERE clause
                null,                       //group the rows
                null,                       //filter by row groups
                null);                      //The sort order

        int cursorCount = cursor.getCount();

        cursor.close();
        db.close();
        if (cursorCount > 0) {
            return true;
        }

        return false;
    }
}

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package com.androindian.sqlit;

import android.content.ContentValues;

import android.content.Context;

import android.database.Cursor;

import android.database.sqlite.SQLiteDatabase;

import android.database.sqlite.SQLiteOpenHelper;

import java.util.ArrayList;

import java.util.List;

public class DatabaseHelper extends SQLiteOpenHelper {

// Database Version

private static final int DATABASE_VERSION = 1;

// Database Name

private static final String DATABASE_NAME = "UserManager.db";

// User table name

private static final String TABLE_USER = "user";

// User Table Columns names

private static final String COLUMN_USER_ID = "user_id";

private static final String COLUMN_USER_NAME = "user_name";

private static final String COLUMN_USER_EMAIL = "user_email";

private static final String COLUMN_USER_PASSWORD = "user_password";

// create table sql query

private String CREATE_USER_TABLE = "CREATE TABLE " + TABLE_USER + "("

+ COLUMN_USER_ID + " INTEGER PRIMARY KEY AUTOINCREMENT," + COLUMN_USER_NAME + " TEXT,"

+ COLUMN_USER_EMAIL + " TEXT," + COLUMN_USER_PASSWORD + " TEXT" + ")";

// drop table sql query

private String DROP_USER_TABLE = "DROP TABLE IF EXISTS " + TABLE_USER;

/**

* Constructor

* @param context

public DatabaseHelper(Context context) {

super(context, DATABASE_NAME, null, DATABASE_VERSION);

}

@Override

public void onCreate(SQLiteDatabase db) {

db.execSQL(CREATE_USER_TABLE);

}

@Override

public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {

//Drop User Table if exist

db.execSQL(DROP_USER_TABLE);

// Create tables again

onCreate(db);

}

/**

* This method is to create user record

* @param user

public void addUser(User user) {

SQLiteDatabase db = this.getWritableDatabase();

ContentValues values = new ContentValues();

values.put(COLUMN_USER_NAME, user.getName());

values.put(COLUMN_USER_EMAIL, user.getEmail());

values.put(COLUMN_USER_PASSWORD, user.getPassword());

// Inserting Row

db.insert(TABLE_USER, null, values);

db.close();

}

/**

* This method is to fetch all user and return the list of user records

* @return list

public List<User> getAllUser() {

// array of columns to fetch

String[] columns = {

COLUMN_USER_ID,

COLUMN_USER_EMAIL,

COLUMN_USER_NAME,

COLUMN_USER_PASSWORD

};

// sorting orders

String sortOrder =

COLUMN_USER_NAME + " ASC";

List<User> userList = new ArrayList<User>();

SQLiteDatabase db = this.getReadableDatabase();

// query the user table

/**

* Here query function is used to fetch records from user table this function works like we use sql query.

* SQL query equivalent to this query function is

* SELECT user_id,user_name,user_email,user_password FROM user ORDER BY user_name;

Cursor cursor = db.query(TABLE_USER, //Table to query

columns, //columns to return

null, //columns for the WHERE clause

null, //The values for the WHERE clause

null, //group the rows

null, //filter by row groups

sortOrder); //The sort order

// Traversing through all rows and adding to list

if (cursor.moveToFirst()) {

do {

User user = new User();

user.setId(Integer.parseInt(cursor.getString(cursor.getColumnIndex(COLUMN_USER_ID))));

user.setName(cursor.getString(cursor.getColumnIndex(COLUMN_USER_NAME)));

user.setEmail(cursor.getString(cursor.getColumnIndex(COLUMN_USER_EMAIL)));

user.setPassword(cursor.getString(cursor.getColumnIndex(COLUMN_USER_PASSWORD)));

// Adding user record to list

userList.add(user);

} while (cursor.moveToNext());

}

cursor.close();

db.close();

// return user list

return userList;

}

/**

* This method to update user record

* @param user

public void updateUser(User user) {

SQLiteDatabase db = this.getWritableDatabase();

ContentValues values = new ContentValues();

values.put(COLUMN_USER_NAME, user.getName());

values.put(COLUMN_USER_EMAIL, user.getEmail());

values.put(COLUMN_USER_PASSWORD, user.getPassword());

// updating row

db.update(TABLE_USER, values, COLUMN_USER_ID + " = ?",

new String[]{String.valueOf(user.getId())});

db.close();

}

/**

* This method is to delete user record

* @param user

public void deleteUser(User user) {

SQLiteDatabase db = this.getWritableDatabase();

// delete user record by id

db.delete(TABLE_USER, COLUMN_USER_ID + " = ?",

new String[]{String.valueOf(user.getId())});

db.close();

}

/**

* This method to check user exist or not

* @param email

* @return true/false

public boolean checkUser(String email) {

// array of columns to fetch

String[] columns = {

COLUMN_USER_ID

};

SQLiteDatabase db = this.getReadableDatabase();

// selection criteria

String selection = COLUMN_USER_EMAIL + " = ?";

// selection argument

String[] selectionArgs = {email};

// query user table with condition

/**

* Here query function is used to fetch records from user table this function works like we use sql query.

* SQL query equivalent to this query function is

* SELECT user_id FROM user WHERE user_email = 'jack@androidtutorialshub.com';

Cursor cursor = db.query(TABLE_USER, //Table to query

columns, //columns to return

selection, //columns for the WHERE clause

selectionArgs, //The values for the WHERE clause

null, //group the rows

null, //filter by row groups

null); //The sort order

int cursorCount = cursor.getCount();

cursor.close();

db.close();

if (cursorCount > 0) {

return true;

}

return false;

}

/**

* This method to check user exist or not

* @param email

* @param password

* @return true/false

public boolean checkUser(String email, String password) {

// array of columns to fetch

String[] columns = {

COLUMN_USER_ID

};

SQLiteDatabase db = this.getReadableDatabase();

// selection criteria

String selection = COLUMN_USER_EMAIL + " = ?" + " AND " + COLUMN_USER_PASSWORD + " = ?";

// selection arguments

String[] selectionArgs = {email, password};

// query user table with conditions

/**

* Here query function is used to fetch records from user table this function works like we use sql query.

* SQL query equivalent to this query function is

* SELECT user_id FROM user WHERE user_email = 'jack@androidtutorialshub.com' AND user_password = 'qwerty';

Cursor cursor = db.query(TABLE_USER, //Table to query

columns, //columns to return

selection, //columns for the WHERE clause

selectionArgs, //The values for the WHERE clause

null, //group the rows

null, //filter by row groups

null); //The sort order

int cursorCount = cursor.getCount();

cursor.close();

db.close();

if (cursorCount > 0) {

return true;

}

return false;

}

InputValidation.java

package com.androindian.sqlit;

import android.app.Activity;
import android.content.Context;
import android.support.design.widget.TextInputEditText;
import android.support.design.widget.TextInputLayout;
import android.view.View;
import android.view.WindowManager;
import android.view.inputmethod.InputMethodManager;

public class InputValidation {
    private Context context;

    /**
     * constructor
     *
     * @param context
     */
    public InputValidation(Context context) {
        this.context = context;
    }

    /**
     * method to check InputEditText filled .
     *
     * @param textInputEditText
     * @param textInputLayout
     * @param message
     * @return
     */
    public boolean isInputEditTextFilled(TextInputEditText textInputEditText, TextInputLayout textInputLayout, String message) {
        String value = textInputEditText.getText().toString().trim();
        if (value.isEmpty()) {
            textInputLayout.setError(message);
            hideKeyboardFrom(textInputEditText);
            return false;
        } else {
            textInputLayout.setErrorEnabled(false);
        }

        return true;
    }


    /**
     * method to check InputEditText has valid email .
     *
     * @param textInputEditText
     * @param textInputLayout
     * @param message
     * @return
     */
    public boolean isInputEditTextEmail(TextInputEditText textInputEditText, TextInputLayout textInputLayout, String message) {
        String value = textInputEditText.getText().toString().trim();
        if (value.isEmpty() || !android.util.Patterns.EMAIL_ADDRESS.matcher(value).matches()) {
            textInputLayout.setError(message);
            hideKeyboardFrom(textInputEditText);
            return false;
        } else {
            textInputLayout.setErrorEnabled(false);
        }
        return true;
    }

    public boolean isInputEditTextMatches(TextInputEditText textInputEditText1, TextInputEditText textInputEditText2, TextInputLayout textInputLayout, String message) {
        String value1 = textInputEditText1.getText().toString().trim();
        String value2 = textInputEditText2.getText().toString().trim();
        if (!value1.contentEquals(value2)) {
            textInputLayout.setError(message);
            hideKeyboardFrom(textInputEditText2);
            return false;
        } else {
            textInputLayout.setErrorEnabled(false);
        }
        return true;
    }

    /**
     * method to Hide keyboard
     *
     * @param view
     */
    private void hideKeyboardFrom(View view) {
        InputMethodManager imm = (InputMethodManager) context.getSystemService(Activity.INPUT_METHOD_SERVICE);
        imm.hideSoftInputFromWindow(view.getWindowToken(), WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_HIDDEN);
    }
}

package com.androindian.sqlit;

import android.app.Activity;

import android.content.Context;

import android.support.design.widget.TextInputEditText;

import android.support.design.widget.TextInputLayout;

import android.view.View;

import android.view.WindowManager;

import android.view.inputmethod.InputMethodManager;

public class InputValidation {

private Context context;

/**

* constructor

* @param context

public InputValidation(Context context) {

this.context = context;

}

/**

* method to check InputEditText filled .

* @param textInputEditText

* @param textInputLayout

* @param message

* @return

public boolean isInputEditTextFilled(TextInputEditText textInputEditText, TextInputLayout textInputLayout, String message) {

String value = textInputEditText.getText().toString().trim();

if (value.isEmpty()) {

textInputLayout.setError(message);

hideKeyboardFrom(textInputEditText);

return false;

} else {

textInputLayout.setErrorEnabled(false);

}

return true;

}

/**

* method to check InputEditText has valid email .

* @param textInputEditText

* @param textInputLayout

* @param message

* @return

public boolean isInputEditTextEmail(TextInputEditText textInputEditText, TextInputLayout textInputLayout, String message) {

String value = textInputEditText.getText().toString().trim();

if (value.isEmpty() || !android.util.Patterns.EMAIL_ADDRESS.matcher(value).matches()) {

textInputLayout.setError(message);

hideKeyboardFrom(textInputEditText);

return false;

} else {

textInputLayout.setErrorEnabled(false);

}

return true;

}

public boolean isInputEditTextMatches(TextInputEditText textInputEditText1, TextInputEditText textInputEditText2, TextInputLayout textInputLayout, String message) {

String value1 = textInputEditText1.getText().toString().trim();

String value2 = textInputEditText2.getText().toString().trim();

if (!value1.contentEquals(value2)) {

textInputLayout.setError(message);

hideKeyboardFrom(textInputEditText2);

return false;

} else {

textInputLayout.setErrorEnabled(false);

}

return true;

}

/**

* method to Hide keyboard

* @param view

private void hideKeyboardFrom(View view) {

InputMethodManager imm = (InputMethodManager) context.getSystemService(Activity.INPUT_METHOD_SERVICE);

imm.hideSoftInputFromWindow(view.getWindowToken(), WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_HIDDEN);

}

User.java

package com.androindian.sqlit;

public class User {
    private int id;
    private String name;
    private String email;
    private String password;

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getEmail() {
        return email;
    }

    public void setEmail(String email) {
        this.email = email;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }
}

package com.androindian.sqlit;

public class User {

private int id;

private String name;

private String email;

private String password;

public int getId() {

return id;

}

public void setId(int id) {

this.id = id;

}

public String getName() {

return name;

}

public void setName(String name) {

this.name = name;

}

public String getEmail() {

return email;

}

public void setEmail(String email) {

this.email = email;

}

public String getPassword() {

return password;

}

public void setPassword(String password) {

this.password = password;

}

UserListActivity.java

package com.androindian.sqlit;

import android.os.AsyncTask;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.AppCompatTextView;
import android.support.v7.widget.DefaultItemAnimator;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.View;
import android.view.ViewGroup;

import java.util.ArrayList;
import java.util.List;

public class UsersListActivity  extends AppCompatActivity {

    private AppCompatActivity activity = UsersListActivity.this;
    private AppCompatTextView textViewName;
    private RecyclerView recyclerViewUsers;
    private List<User> listUsers;
    private UsersRecyclerAdapter usersRecyclerAdapter;
    private DatabaseHelper databaseHelper;

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_users_list);
        getSupportActionBar().setTitle("");
        initViews();
        initObjects();

    }

    /**
     * This method is to initialize views
     */
    private void initViews() {
        textViewName = (AppCompatTextView) findViewById(R.id.textViewName);
        recyclerViewUsers = (RecyclerView) findViewById(R.id.recyclerViewUsers);
    }

    /**
     * This method is to initialize objects to be used
     */
    private void initObjects() {
        listUsers = new ArrayList<>();
        usersRecyclerAdapter = new UsersRecyclerAdapter(listUsers);

        RecyclerView.LayoutManager mLayoutManager = new LinearLayoutManager(getApplicationContext());
        recyclerViewUsers.setLayoutManager(mLayoutManager);
        recyclerViewUsers.setItemAnimator(new DefaultItemAnimator());
        recyclerViewUsers.setHasFixedSize(true);
        recyclerViewUsers.setAdapter(usersRecyclerAdapter);
        databaseHelper = new DatabaseHelper(activity);

        String emailFromIntent = getIntent().getStringExtra("EMAIL");
        textViewName.setText(emailFromIntent);

        getDataFromSQLite();
    }

    /**
     * This method is to fetch all user records from SQLite
     */
    private void getDataFromSQLite() {
        // AsyncTask is used that SQLite operation not blocks the UI Thread.
        new AsyncTask<Void, Void, Void>() {
            @Override
            protected Void doInBackground(Void... params) {
                listUsers.clear();
                listUsers.addAll(databaseHelper.getAllUser());

                return null;
            }

            @Override
            protected void onPostExecute(Void aVoid) {
                super.onPostExecute(aVoid);
                usersRecyclerAdapter.notifyDataSetChanged();
            }
        }.execute();
    }
}

package com.androindian.sqlit;

import android.os.AsyncTask;

import android.support.annotation.Nullable;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.support.v7.widget.AppCompatTextView;

import android.support.v7.widget.DefaultItemAnimator;

import android.support.v7.widget.LinearLayoutManager;

import android.support.v7.widget.RecyclerView;

import android.view.View;

import android.view.ViewGroup;

import java.util.ArrayList;

import java.util.List;

public class UsersListActivity extends AppCompatActivity {

private AppCompatActivity activity = UsersListActivity.this;

private AppCompatTextView textViewName;

private RecyclerView recyclerViewUsers;

private List<User> listUsers;

private UsersRecyclerAdapter usersRecyclerAdapter;

private DatabaseHelper databaseHelper;

@Override

protected void onCreate(@Nullable Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_users_list);

getSupportActionBar().setTitle("");

initViews();

initObjects();

}

/**

* This method is to initialize views

private void initViews() {

textViewName = (AppCompatTextView) findViewById(R.id.textViewName);

recyclerViewUsers = (RecyclerView) findViewById(R.id.recyclerViewUsers);

}

/**

* This method is to initialize objects to be used

private void initObjects() {

listUsers = new ArrayList<>();

usersRecyclerAdapter = new UsersRecyclerAdapter(listUsers);

RecyclerView.LayoutManager mLayoutManager = new LinearLayoutManager(getApplicationContext());

recyclerViewUsers.setLayoutManager(mLayoutManager);

recyclerViewUsers.setItemAnimator(new DefaultItemAnimator());

recyclerViewUsers.setHasFixedSize(true);

recyclerViewUsers.setAdapter(usersRecyclerAdapter);

databaseHelper = new DatabaseHelper(activity);

String emailFromIntent = getIntent().getStringExtra("EMAIL");

textViewName.setText(emailFromIntent);

getDataFromSQLite();

}

/**

* This method is to fetch all user records from SQLite

private void getDataFromSQLite() {

// AsyncTask is used that SQLite operation not blocks the UI Thread.

new AsyncTask<Void, Void, Void>() {

@Override

protected Void doInBackground(Void... params) {

listUsers.clear();

listUsers.addAll(databaseHelper.getAllUser());

return null;

}

@Override

protected void onPostExecute(Void aVoid) {

super.onPostExecute(aVoid);

usersRecyclerAdapter.notifyDataSetChanged();

}

}.execute();

}

activity_users_list.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <android.support.v7.widget.LinearLayoutCompat
        android:layout_width="match_parent"
        android:layout_height="150dp"
        android:background="@color/colorPrimary"
        android:gravity="center"
        android:orientation="vertical">

        <android.support.v7.widget.AppCompatTextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/text_title"
            android:textSize="20sp" />

        <android.support.v7.widget.AppCompatTextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="10dp"
            android:text="@string/text_hello" />

        <android.support.v7.widget.AppCompatTextView
            android:id="@+id/textViewName"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />

    </android.support.v7.widget.LinearLayoutCompat>

    <android.support.v7.widget.AppCompatTextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:paddingBottom="5dp"
        android:paddingLeft="16dp"
        android:paddingTop="5dp"
        android:text="@string/text_accounts"
        android:textColor="@android:color/black" />

    <android.support.v7.widget.RecyclerView
        android:id="@+id/recyclerViewUsers"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:orientation="vertical">

<android.support.v7.widget.LinearLayoutCompat

android:layout_width="match_parent"

android:layout_height="150dp"

android:background="@color/colorPrimary"

android:gravity="center"

android:orientation="vertical">

<android.support.v7.widget.AppCompatTextView

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="@string/text_title"

android:textSize="20sp" />

<android.support.v7.widget.AppCompatTextView

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_marginTop="10dp"

android:text="@string/text_hello" />

<android.support.v7.widget.AppCompatTextView

android:id="@+id/textViewName"

android:layout_width="wrap_content"

android:layout_height="wrap_content" />

</android.support.v7.widget.LinearLayoutCompat>

<android.support.v7.widget.AppCompatTextView

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:paddingBottom="5dp"

android:paddingLeft="16dp"

android:paddingTop="5dp"

android:text="@string/text_accounts"

android:textColor="@android:color/black" />

<android.support.v7.widget.RecyclerView

android:id="@+id/recyclerViewUsers"

android:layout_width="match_parent"

android:layout_height="match_parent" />

</LinearLayout>

UserRecyclerAdapter.java

package com.androindian.sqlit;

import android.support.v7.widget.AppCompatTextView;
import android.support.v7.widget.RecyclerView;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

import java.util.List;

class UsersRecyclerAdapter extends RecyclerView.Adapter<UsersRecyclerAdapter.UserViewHolder> {

    private List<User> listUsers;

    public UsersRecyclerAdapter(List<User> listUsers) {
        this.listUsers = listUsers;
    }

    @Override
    public UserViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        // inflating recycler item view
        View itemView = LayoutInflater.from(parent.getContext())
                .inflate(R.layout.item_user_recycler, parent, false);

        return new UserViewHolder(itemView);
    }

    @Override
    public void onBindViewHolder(UserViewHolder holder, int position) {
        holder.textViewName.setText(listUsers.get(position).getName());
        holder.textViewEmail.setText(listUsers.get(position).getEmail());
        holder.textViewPassword.setText(listUsers.get(position).getPassword());
    }

    @Override
    public int getItemCount() {
        Log.v(UsersRecyclerAdapter.class.getSimpleName(),""+listUsers.size());
        return listUsers.size();
    }


    /**
     * ViewHolder class
     */
    public class UserViewHolder extends RecyclerView.ViewHolder {

        public AppCompatTextView textViewName;
        public AppCompatTextView textViewEmail;
        public AppCompatTextView textViewPassword;

        public UserViewHolder(View view) {
            super(view);
            textViewName = (AppCompatTextView) view.findViewById(R.id.textViewName);
            textViewEmail = (AppCompatTextView) view.findViewById(R.id.textViewEmail);
            textViewPassword = (AppCompatTextView) view.findViewById(R.id.textViewPassword);
        }
    }


}

package com.androindian.sqlit;

import android.support.v7.widget.AppCompatTextView;

import android.support.v7.widget.RecyclerView;

import android.util.Log;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

import java.util.List;

class UsersRecyclerAdapter extends RecyclerView.Adapter<UsersRecyclerAdapter.UserViewHolder> {

private List<User> listUsers;

public UsersRecyclerAdapter(List<User> listUsers) {

this.listUsers = listUsers;

}

@Override

public UserViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {

// inflating recycler item view

View itemView = LayoutInflater.from(parent.getContext())

.inflate(R.layout.item_user_recycler, parent, false);

return new UserViewHolder(itemView);

}

@Override

public void onBindViewHolder(UserViewHolder holder, int position) {

holder.textViewName.setText(listUsers.get(position).getName());

holder.textViewEmail.setText(listUsers.get(position).getEmail());

holder.textViewPassword.setText(listUsers.get(position).getPassword());

}

@Override

public int getItemCount() {

Log.v(UsersRecyclerAdapter.class.getSimpleName(),""+listUsers.size());

return listUsers.size();

}

/**

* ViewHolder class

public class UserViewHolder extends RecyclerView.ViewHolder {

public AppCompatTextView textViewName;

public AppCompatTextView textViewEmail;

public AppCompatTextView textViewPassword;

public UserViewHolder(View view) {

super(view);

textViewName = (AppCompatTextView) view.findViewById(R.id.textViewName);

textViewEmail = (AppCompatTextView) view.findViewById(R.id.textViewEmail);

textViewPassword = (AppCompatTextView) view.findViewById(R.id.textViewPassword);

}

item_user_recycler.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:card_view="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    card_view:cardCornerRadius="4dp">


    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        android:padding="16dp">

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal">

            <android.support.v7.widget.AppCompatTextView
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_weight="2"
                android:text="@string/hint_name"
                android:textColor="@color/colorTextHint" />

            <android.support.v7.widget.AppCompatTextView
                android:id="@+id/textViewName"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:text="@string/hint_name"
                android:textColor="@android:color/darker_gray" />
        </LinearLayout>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="5dp"
            android:orientation="horizontal">

            <android.support.v7.widget.AppCompatTextView
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_weight="2"
                android:text="@string/hint_email"
                android:textColor="@color/colorTextHint" />

            <android.support.v7.widget.AppCompatTextView
                android:id="@+id/textViewEmail"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:text="@string/hint_email"
                android:textColor="@android:color/darker_gray" />
        </LinearLayout>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="5dp"
            android:orientation="horizontal">

            <android.support.v7.widget.AppCompatTextView
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_weight="2"
                android:text="@string/hint_password"
                android:textColor="@color/colorTextHint" />

            <android.support.v7.widget.AppCompatTextView
                android:id="@+id/textViewPassword"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:text="@string/hint_password"
                android:textColor="@android:color/darker_gray" />
        </LinearLayout>

    </LinearLayout>

</android.support.v7.widget.CardView>

<?xml version="1.0" encoding="utf-8"?>

<android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"

xmlns:card_view="http://schemas.android.com/apk/res-auto"

android:layout_width="match_parent"

android:layout_height="wrap_content"

card_view:cardCornerRadius="4dp">

<LinearLayout

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:orientation="vertical"

android:padding="16dp">

<LinearLayout

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:orientation="horizontal">

<android.support.v7.widget.AppCompatTextView

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:layout_weight="2"

android:text="@string/hint_name"

android:textColor="@color/colorTextHint" />

<android.support.v7.widget.AppCompatTextView

android:id="@+id/textViewName"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:layout_weight="1"

android:text="@string/hint_name"

android:textColor="@android:color/darker_gray" />

</LinearLayout>

<LinearLayout

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:layout_marginTop="5dp"

android:orientation="horizontal">

<android.support.v7.widget.AppCompatTextView

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:layout_weight="2"

android:text="@string/hint_email"

android:textColor="@color/colorTextHint" />

<android.support.v7.widget.AppCompatTextView

android:id="@+id/textViewEmail"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:layout_weight="1"

android:text="@string/hint_email"

android:textColor="@android:color/darker_gray" />

</LinearLayout>

<LinearLayout

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:layout_marginTop="5dp"

android:orientation="horizontal">

<android.support.v7.widget.AppCompatTextView

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:layout_weight="2"

android:text="@string/hint_password"

android:textColor="@color/colorTextHint" />

<android.support.v7.widget.AppCompatTextView

android:id="@+id/textViewPassword"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:layout_weight="1"

android:text="@string/hint_password"

android:textColor="@android:color/darker_gray" />

</LinearLayout>

</android.support.v7.widget.CardView>

OutPut:

Android Tutorials

December 12, 2018

DatePicker with Dialog

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<layout>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <EditText
        android:layout_width="200dp"
        android:layout_height="wrap_content"
        android:id="@+id/in_date"
        android:layout_marginTop="82dp"
        android:layout_alignParentTop="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true" />

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="SELECT DATE"
        android:id="@+id/btn_date"
        android:layout_alignBottom="@+id/in_date"
        android:layout_toRightOf="@+id/in_date"
        android:layout_toEndOf="@+id/in_date" />    

    
</RelativeLayout>

</layout>

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"

android:layout_height="match_parent"

tools:context=".MainActivity">

<EditText

android:layout_width="200dp"

android:layout_height="wrap_content"

android:id="@+id/in_date"

android:layout_marginTop="82dp"

android:layout_alignParentTop="true"

android:layout_alignParentLeft="true"

android:layout_alignParentStart="true" />

<Button

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="SELECT DATE"

android:id="@+id/btn_date"

android:layout_alignBottom="@+id/in_date"

android:layout_toRightOf="@+id/in_date"

android:layout_toEndOf="@+id/in_date" />

</RelativeLayout>

</layout>

MainActivity.java

package com.androindian.raj.datepicker;


import android.app.DatePickerDialog;

import android.databinding.DataBindingUtil;
import android.os.Build;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.DatePicker;


import com.androindian.raj.datepicker.databinding.ActivityMainBinding;

import java.util.Calendar;

public class MainActivity extends AppCompatActivity  {

    ActivityMainBinding binding;
    private int mYear, mMonth, mDay;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        binding=DataBindingUtil.setContentView(MainActivity.this,R.layout.activity_main);

        binding.btnDate.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Calendar calendar=Calendar.getInstance();
                mYear=calendar.get(Calendar.YEAR);
                mMonth=calendar.get(Calendar.MONTH);
                mDay=calendar.get(Calendar.DATE);

                DatePickerDialog datePickerDialog=new DatePickerDialog(MainActivity.this,
                        new DatePickerDialog.OnDateSetListener() {
                            @Override
                            public void onDateSet(DatePicker view, int year, int month, int dayOfMonth) {
                                binding.inDate.setText(year+"-"+month+"-"+dayOfMonth);
                            }
                        },
                        mYear, mMonth, mDay);
                datePickerDialog.show();
            }
        });
        

    }


}

package com.androindian.raj.datepicker;

import android.app.DatePickerDialog;

import android.databinding.DataBindingUtil;

import android.os.Build;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.view.View;

import android.widget.DatePicker;

import com.androindian.raj.datepicker.databinding.ActivityMainBinding;

import java.util.Calendar;

public class MainActivity extends AppCompatActivity {

ActivityMainBinding binding;

private int mYear, mMonth, mDay;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

binding=DataBindingUtil.setContentView(MainActivity.this,R.layout.activity_main);

binding.btnDate.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v) {

Calendar calendar=Calendar.getInstance();

mYear=calendar.get(Calendar.YEAR);

mMonth=calendar.get(Calendar.MONTH);

mDay=calendar.get(Calendar.DATE);

DatePickerDialog datePickerDialog=new DatePickerDialog(MainActivity.this,

new DatePickerDialog.OnDateSetListener() {

@Override

public void onDateSet(DatePicker view, int year, int month, int dayOfMonth) {

binding.inDate.setText(year+"-"+month+"-"+dayOfMonth);

}

mYear, mMonth, mDay);

datePickerDialog.show();

}

});

}

Android Tutorials

December 12, 2018

TimePicker Dialog

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<layout>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <EditText
        android:layout_width="200dp"
        android:layout_height="wrap_content"
        android:id="@+id/in_time"
        android:layout_marginTop="82dp"
        android:layout_alignParentTop="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true" />

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="SELECT DATE"
        android:id="@+id/btn_time"
        android:layout_alignBottom="@+id/in_time"
        android:layout_toRightOf="@+id/in_time"
        android:layout_toEndOf="@+id/in_time" />

    
</RelativeLayout>

</layout>

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"

android:layout_height="match_parent"

tools:context=".MainActivity">

<EditText

android:layout_width="200dp"

android:layout_height="wrap_content"

android:id="@+id/in_time"

android:layout_marginTop="82dp"

android:layout_alignParentTop="true"

android:layout_alignParentLeft="true"

android:layout_alignParentStart="true" />

<Button

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="SELECT DATE"

android:id="@+id/btn_time"

android:layout_alignBottom="@+id/in_time"

android:layout_toRightOf="@+id/in_time"

android:layout_toEndOf="@+id/in_time" />

</RelativeLayout>

</layout>

MainActivity.java

package com.androindian.raj.datepicker;


import android.app.TimePickerDialog;
import android.databinding.DataBindingUtil;
import android.os.Build;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;

import android.widget.TimePicker;

import com.androindian.raj.datepicker.databinding.ActivityMainBinding;

import java.util.Calendar;

public class MainActivity extends AppCompatActivity  {

    ActivityMainBinding binding;
    private int  mHour, mMinute;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        binding=DataBindingUtil.setContentView(MainActivity.this,R.layout.activity_main);

       
        binding.btnTime.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Calendar calendar=Calendar.getInstance();
                mHour=calendar.get(Calendar.HOUR);
                mMinute=calendar.get(Calendar.MINUTE);
                calendar.get(Calendar.SECOND);

                TimePickerDialog timePickerDialog=new TimePickerDialog(
                        MainActivity.this, new TimePickerDialog.OnTimeSetListener() {
                    @Override
                    public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
                        binding.inTime.setText(hourOfDay+":"+minute);
                    }
                },mMinute,mHour,false);

                timePickerDialog.show();
            }
        });

    }


}

package com.androindian.raj.datepicker;

import android.app.TimePickerDialog;

import android.databinding.DataBindingUtil;

import android.os.Build;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.view.View;

import android.widget.TimePicker;

import com.androindian.raj.datepicker.databinding.ActivityMainBinding;

import java.util.Calendar;

public class MainActivity extends AppCompatActivity {

ActivityMainBinding binding;

private int mHour, mMinute;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

binding=DataBindingUtil.setContentView(MainActivity.this,R.layout.activity_main);

binding.btnTime.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v) {

Calendar calendar=Calendar.getInstance();

mHour=calendar.get(Calendar.HOUR);

mMinute=calendar.get(Calendar.MINUTE);

calendar.get(Calendar.SECOND);

TimePickerDialog timePickerDialog=new TimePickerDialog(

MainActivity.this, new TimePickerDialog.OnTimeSetListener() {

@Override

public void onTimeSet(TimePicker view, int hourOfDay, int minute) {

binding.inTime.setText(hourOfDay+":"+minute);

}

},mMinute,mHour,false);

timePickerDialog.show();

}

});

}

Android Tutorials

December 12, 2018

Here i want to display list view and the items are in list those are loaded from server. Before starting this program just concentrate on Json (API). URL: http://androindian.com/apps/blog_links/api.php Req: {“action”:”get_all_links”} Res Success :...

Android Tutorials

December 6, 2018

Retrofit with GET Request

this is the service for get Request: http://postalpincode.in/api/pincode/(pass here postal code like below) http://postalpincode.in/api/pincode/500018 Response: { “Message”: “Number of Post office(s) found: 8”, “Status”: “Success”, “PostOffice”: [ { “Name”: “Bharat Nagar Colony”, “Description”: “”,...

Android Tutorials

December 5, 2018

Table with border

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#06efd5"
    android:orientation="vertical"
    >

    <TableLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">
        <TableRow
            android:layout_width="match_parent"
            android:layout_height="wrap_content">
            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="S.No"
                android:padding="10dp"
                android:background="@drawable/border"/>
            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="Name"
                android:padding="10dp"
                android:background="@drawable/border"/>
            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="Mobile"
                android:padding="10dp"
                android:background="@drawable/border"
                />
            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="Email"
                android:padding="10dp"
                android:background="@drawable/border"/>
        </TableRow>
        <TableRow
            android:layout_width="match_parent"
            android:layout_height="wrap_content">
            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="1"
                android:padding="10dp"
                android:background="@drawable/border"/>
            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="xyz"
                android:padding="10dp"
                android:background="@drawable/border"/>
            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="66125162"
                android:padding="10dp"
                android:background="@drawable/border"/>
            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="Email@gmail.com"
                android:padding="10dp"
                android:background="@drawable/border"/>
        </TableRow>
    </TableLayout>

    

</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout

xmlns:android="http://schemas.android.com/apk/res/android"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:background="#06efd5"

android:orientation="vertical"

<TableLayout

android:layout_width="match_parent"

android:layout_height="wrap_content">

<TableRow

android:layout_width="match_parent"

android:layout_height="wrap_content">

<TextView

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="S.No"

android:padding="10dp"

android:background="@drawable/border"/>

<TextView

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="Name"

android:padding="10dp"

android:background="@drawable/border"/>

<TextView

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="Mobile"

android:padding="10dp"

android:background="@drawable/border"

<TextView

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="Email"

android:padding="10dp"

android:background="@drawable/border"/>

</TableRow>

<TableRow

android:layout_width="match_parent"

android:layout_height="wrap_content">

<TextView

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="1"

android:padding="10dp"

android:background="@drawable/border"/>

<TextView

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="xyz"

android:padding="10dp"

android:background="@drawable/border"/>

<TextView

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="66125162"

android:padding="10dp"

android:background="@drawable/border"/>

<TextView

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="Email@gmail.com"

android:padding="10dp"

android:background="@drawable/border"/>

</TableRow>

</TableLayout>

</LinearLayout>

now create border.xml in drawable folder with below code

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle">

    <stroke android:color="#000"
        android:width="1dp"></stroke>

</shape>

<?xml version="1.0" encoding="utf-8"?>

<shape xmlns:android="http://schemas.android.com/apk/res/android"

android:shape="rectangle">

<stroke android:color="#000"

android:width="1dp"></stroke>

</shape>

Android Tutorials

November 24, 2018

Nougat Features

This version released on June 30, 2016. Features Battery Power Optimization: From android 7.0 onwards battery life is improved, when mobile is the ideal battery is also used in very very rare percentage. Better...

Android Tutorials

November 24, 2018

Features of Android

1) Open source framework, Android OS is open source and it is part of the Open Handset Alliance, most of the leading handset manufacturers in the world have Android phones. 2) Uses of tools...

Android Tutorials

November 24, 2018

What is Android

Android is an open source software that includes the operating system and middleware software, it provides tools and technologies which can be used to develop and build mobile Applications. Android runs always on top...

Category: Android Tutorials

Accessing Contacts from your application

Login And Registration with SQLite with Material Design

DatePicker with Dialog

TimePicker Dialog

Volley with Listiew

Retrofit with GET Request

Table with border

Nougat Features

Features of Android

What is Android

Apps in Playstore

Recent

Video Tutorials

OBJECTIVE...!

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