ListView in Android Uisng Json

1513 views.

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 : {“response”:”success”,”results”:2,”data”:[{“id”:”1″,”title”:”android-activity-life-cycle”,”url”:”http:\/\/rajandroindian.blogspot.in\/2015\/08\/android-activity-life-cycle.html”},{“id”:”2″,”title”:”android-interview-questions”,”url”:”http:\/\/rajandroindian.blogspot.in\/2015\/08\/android-interview-questions.html”}]}

Res empty : {“response”:”success”,”results”:0,”data”:[]}
Res Failed : {“response”:”failed”}

activitymain.xml

<?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:id="@+id/activity_main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="androiindian.listviewfromjson.MainActivity">
    

    <ListView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/list">

    </ListView>
</RelativeLayout>

<?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:id="@+id/activity_main"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:paddingBottom="@dimen/activity_vertical_margin"

android:paddingLeft="@dimen/activity_horizontal_margin"

android:paddingRight="@dimen/activity_horizontal_margin"

android:paddingTop="@dimen/activity_vertical_margin"

tools:context="androiindian.listviewfromjson.MainActivity">

<ListView

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:id="@+id/list">

</ListView>

</RelativeLayout>

ActivityMain.java

package androiindian.listviewfromjson;

import android.content.Intent;
import android.os.AsyncTask;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import java.util.ArrayList;

public class MainActivity extends AppCompatActivity {

    JSONObject jsonoBject;
    String  output=null,val1;
    ListView programslist;
    ArrayAdapter listadapter;
    JSONArray jsonArray=null;


    ArrayList<String> myprogrammes  = new ArrayList();
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);







        programslist=(ListView)findViewById(R.id.list);

        listadapter=new ArrayAdapter(getApplicationContext(),
                R.layout.custom,myprogrammes);
        programslist.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                String urlposi="";
                try{
                    String programurl=programslist.getItemAtPosition(position).toString();

                    for (int i = 0; i < jsonArray.length(); i++) {
                        JSONObject subObj = jsonArray.getJSONObject(i);
                        String d_nm = subObj.getString("title".trim());
                        if(programurl.equals(d_nm)){
                            urlposi = subObj.getString("url".trim());
                            System.out.println("The Selected Unit::::"+urlposi);


                            break;
                        }
                    }
                }catch(Exception e){
                    e.printStackTrace();
                }

                Log.e("URL is",urlposi);

                Intent prog=new Intent(MainActivity.this,ProgramDisplay.class);
                prog.putExtra("urll",urlposi);
                prog.putExtra("Title",programslist.getItemAtPosition(position).toString());
                startActivity(prog);

            }
        });




        JSONObject Programeslist=new JSONObject();
        try {
            Programeslist.put("action","get_all_links");

        } catch (JSONException e) {
            e.printStackTrace();
        }
        Allprogrames pr=new Allprogrames();
        pr.execute(Programeslist.toString());
    }

    public class Allprogrames extends AsyncTask<String,String,String> {
        String url = "http://androindian.com/apps/blog_links/api.php";

        @Override
        protected String doInBackground(String... params) {
            jsonoBject = JsonFunction.getJsonFromUrlparam(url, params[0]);
            Log.i("json", "" + jsonoBject);
            return String.valueOf(jsonoBject);
        }

        @Override
        protected void onPostExecute(String s) {
            super.onPostExecute(s);

            try {
                JSONObject jsonObject1 = new JSONObject(s);
                jsonArray = jsonObject1.getJSONArray("data");

                for(int i=0;i<jsonArray.length();i++) {

                    JSONObject jsonObject2 = jsonArray.getJSONObject(i);

                    val1 = jsonObject2.getString("title");

                    String pro = jsonObject2.getString("url");
                    myprogrammes.add(val1);


                }
                programslist.setAdapter(listadapter);

            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }

}

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package androiindian.listviewfromjson;

import android.content.Intent;

import android.os.AsyncTask;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.util.Log;

import android.view.View;

import android.widget.AdapterView;

import android.widget.ArrayAdapter;

import android.widget.ListView;

import org.json.JSONArray;

import org.json.JSONException;

import org.json.JSONObject;

import java.util.ArrayList;

public class MainActivity extends AppCompatActivity {

JSONObject jsonoBject;

String output=null,val1;

ListView programslist;

ArrayAdapter listadapter;

JSONArray jsonArray=null;

ArrayList<String> myprogrammes = new ArrayList();

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

programslist=(ListView)findViewById(R.id.list);

listadapter=new ArrayAdapter(getApplicationContext(),

R.layout.custom,myprogrammes);

programslist.setOnItemClickListener(new AdapterView.OnItemClickListener() {

@Override

public void onItemClick(AdapterView<?> parent, View view, int position, long id) {

String urlposi="";

try{

String programurl=programslist.getItemAtPosition(position).toString();

for (int i = 0; i < jsonArray.length(); i++) {

JSONObject subObj = jsonArray.getJSONObject(i);

String d_nm = subObj.getString("title".trim());

if(programurl.equals(d_nm)){

urlposi = subObj.getString("url".trim());

System.out.println("The Selected Unit::::"+urlposi);

break;

}

}catch(Exception e){

e.printStackTrace();

}

Log.e("URL is",urlposi);

Intent prog=new Intent(MainActivity.this,ProgramDisplay.class);

prog.putExtra("urll",urlposi);

prog.putExtra("Title",programslist.getItemAtPosition(position).toString());

startActivity(prog);

}

});

JSONObject Programeslist=new JSONObject();

try {

Programeslist.put("action","get_all_links");

} catch (JSONException e) {

e.printStackTrace();

}

Allprogrames pr=new Allprogrames();

pr.execute(Programeslist.toString());

}

public class Allprogrames extends AsyncTask<String,String,String> {

String url = "http://androindian.com/apps/blog_links/api.php";

@Override

protected String doInBackground(String... params) {

jsonoBject = JsonFunction.getJsonFromUrlparam(url, params[0]);

Log.i("json", "" + jsonoBject);

return String.valueOf(jsonoBject);

}

@Override

protected void onPostExecute(String s) {

super.onPostExecute(s);

try {

JSONObject jsonObject1 = new JSONObject(s);

jsonArray = jsonObject1.getJSONArray("data");

for(int i=0;i<jsonArray.length();i++) {

JSONObject jsonObject2 = jsonArray.getJSONObject(i);

val1 = jsonObject2.getString("title");

String pro = jsonObject2.getString("url");

myprogrammes.add(val1);

}

programslist.setAdapter(listadapter);

} catch (Exception e) {

e.printStackTrace();

}

custom.xml

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

<TextView xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:padding="5dp"
    android:background="#fff"
    android:textSize="18dp"
    android:textColor="@color/colorPrimaryDark">

</TextView>

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

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

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:padding="5dp"

android:background="#fff"

android:textSize="18dp"

android:textColor="@color/colorPrimaryDark">

</TextView>

ProgamDisplay.java

package androiindian.listviewfromjson;

import android.app.AlertDialog;
import android.app.ProgressDialog;
import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.TextView;
import android.widget.Toast;

/**
 * Created by janga on 31-10-2016.
 */
public class ProgramDisplay extends AppCompatActivity {


    private WebView webview;
    private ProgressDialog progressBar;
    String weburl=null;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.display_praogram);



        Intent prog=getIntent();
        String title=prog.getStringExtra("Title");
        weburl=prog.getStringExtra("urll");


        TextView prog_text=(TextView)findViewById(R.id.dis_tv);
        prog_text.setText(title);


        webview = (WebView) findViewById(R.id.dis_web);
        webview.getSettings().setJavaScriptEnabled(true);

        final AlertDialog alertDialog = new AlertDialog.Builder(this).create();

        progressBar = ProgressDialog.show(ProgramDisplay.this, "Content Loading", "Please Wait...");

        webview.setWebViewClient(new WebViewClient() {
            public boolean shouldOverrideUrlLoading(WebView view, String url) {

                if(url.equalsIgnoreCase(weburl+"?m=1")) {
                    Log.i("web", "Processing webview url click...");
                    view.loadUrl(url);
                }
                return true;

            }

            public void onPageFinished(WebView view, String url) {
                Log.i("web", "Finished loading URL: " +url);
                if (progressBar.isShowing()) {
                    progressBar.dismiss();
                }
            }

            public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) {
                Log.e("web", "Error: " + description);
                Toast.makeText(getApplicationContext(), "Oh no! " + description, Toast.LENGTH_SHORT).show();

            }
        });
        webview.loadUrl(weburl);

    }

}

package androiindian.listviewfromjson;

import android.app.AlertDialog;

import android.app.ProgressDialog;

import android.content.Intent;

import android.os.Bundle;

import android.support.v7.app.AppCompatActivity;

import android.util.Log;

import android.webkit.WebView;

import android.webkit.WebViewClient;

import android.widget.TextView;

import android.widget.Toast;

/**

* Created by janga on 31-10-2016.

public class ProgramDisplay extends AppCompatActivity {

private WebView webview;

private ProgressDialog progressBar;

String weburl=null;

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.display_praogram);

Intent prog=getIntent();

String title=prog.getStringExtra("Title");

weburl=prog.getStringExtra("urll");

TextView prog_text=(TextView)findViewById(R.id.dis_tv);

prog_text.setText(title);

webview = (WebView) findViewById(R.id.dis_web);

webview.getSettings().setJavaScriptEnabled(true);

final AlertDialog alertDialog = new AlertDialog.Builder(this).create();

progressBar = ProgressDialog.show(ProgramDisplay.this, "Content Loading", "Please Wait...");

webview.setWebViewClient(new WebViewClient() {

public boolean shouldOverrideUrlLoading(WebView view, String url) {

if(url.equalsIgnoreCase(weburl+"?m=1")) {

Log.i("web", "Processing webview url click...");

view.loadUrl(url);

}

return true;

}

public void onPageFinished(WebView view, String url) {

Log.i("web", "Finished loading URL: " +url);

if (progressBar.isShowing()) {

progressBar.dismiss();

}

public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) {

Log.e("web", "Error: " + description);

Toast.makeText(getApplicationContext(), "Oh no! " + description, Toast.LENGTH_SHORT).show();

}

});

webview.loadUrl(weburl);

}

display_program.java

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:weightSum="10">
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical"
        android:layout_weight="1"
        android:padding="5dp">


        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:id="@+id/dis_tv"
            android:gravity="center"
            android:textColor="@color/colorAccent"
            android:textSize="20dp"/>

        <WebView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:id="@+id/dis_web">


        </WebView>
    </LinearLayout>

</LinearLayout>

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

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

android:orientation="vertical" android:layout_width="match_parent"

android:layout_height="match_parent"

android:weightSum="10">

<LinearLayout

android:layout_width="match_parent"

android:layout_height="match_parent"

android:orientation="vertical"

android:layout_weight="1"

android:padding="5dp">

<TextView

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:id="@+id/dis_tv"

android:gravity="center"

android:textColor="@color/colorAccent"

android:textSize="20dp"/>

<WebView

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:id="@+id/dis_web">

</WebView>

</LinearLayout>

JsonFunction.java

package androiindian.listviewfromjson;

import android.util.Log;

import org.json.JSONException;
import org.json.JSONObject;

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;

/**
 * Created by janga on 31-10-2016.
 */
public class JsonFunction {


    public JSONObject getJsonFromUrl(String url)
    {
        JSONObject jsonObject = null;

        try {

            URL jsonUrl=new URL(url);
            HttpURLConnection connection= (HttpURLConnection) jsonUrl.openConnection();
            InputStream is=new BufferedInputStream(connection.getInputStream());
            BufferedReader bufferedReader=new BufferedReader(new InputStreamReader(is));
            StringBuffer sb=new StringBuffer();
            String line;
            while ((line=bufferedReader.readLine())!=null)
            {
                sb.append(line+"\n");
            }
            is.close();
            Log.i("sb",sb.toString());
            jsonObject=new JSONObject(sb.toString());

        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } catch (JSONException e) {
            e.printStackTrace();
        }
        return jsonObject;
    }
    public static JSONObject getJsonFromUrlparam(String url, String para)
    {
        JSONObject jsonObject = null;

        try {

            URL jsonUrl=new URL(url);
            HttpURLConnection connection= (HttpURLConnection) jsonUrl.openConnection();

            connection.setDoOutput(true);
            connection.setDoInput(true);
            connection.setConnectTimeout(60000);
            connection.setRequestMethod("POST");
            connection.setRequestProperty("Content-Type","application/x-www-form-urlencoded");
            connection.setRequestProperty("Accept-Charset", "UTF-8");
            connection.setRequestProperty("Accept", "application/json");
            connection.setUseCaches(false);
            connection.connect();


            OutputStream mOutPut = new BufferedOutputStream(connection.getOutputStream());
            mOutPut.write(para.getBytes());
            mOutPut.flush();

            InputStream is=new BufferedInputStream(connection.getInputStream());
            BufferedReader bufferedReader=new BufferedReader(new InputStreamReader(is));
            StringBuffer sb=new StringBuffer();
            String line;
            while ((line=bufferedReader.readLine())!=null)
            {
                sb.append(line+"\n");
            }
            is.close();

            Log.i("json",sb.toString());
            jsonObject=new JSONObject(sb.toString());
            Log.i("json",""+jsonObject);
        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } catch (JSONException e) {
            e.printStackTrace();
        }
        return jsonObject;
    }
    public static String getJsonUrlparamString(String url, String para)
    {
        StringBuffer sb = null;

        try {

            URL jsonUrl=new URL(url);
            HttpURLConnection connection= (HttpURLConnection) jsonUrl.openConnection();

            connection.setDoOutput(true);
            connection.setDoInput(true);
            connection.setConnectTimeout(60000);
            connection.setRequestMethod("POST");
            connection.setRequestProperty("Content-Type","application/x-www-form-urlencoded");
            connection.setRequestProperty("Accept-Charset", "UTF-8");
            connection.setRequestProperty("Accept", "application/json");
            connection.setUseCaches(false);
            connection.connect();


            OutputStream mOutPut = new BufferedOutputStream(connection.getOutputStream());
            mOutPut.write(para.getBytes());
            mOutPut.flush();

            InputStream is=new BufferedInputStream(connection.getInputStream());
            BufferedReader bufferedReader=new BufferedReader(new InputStreamReader(is));
            sb=new StringBuffer();
            String line;
            while ((line=bufferedReader.readLine())!=null)
            {
                sb.append(line+"\n");
            }
            is.close();

            Log.i("json",sb.toString());
        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return sb.toString();
    }
}

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package androiindian.listviewfromjson;

import android.util.Log;

import org.json.JSONException;

import org.json.JSONObject;

import java.io.BufferedInputStream;

import java.io.BufferedOutputStream;

import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStream;

import java.io.InputStreamReader;

import java.io.OutputStream;

import java.net.HttpURLConnection;

import java.net.MalformedURLException;

import java.net.URL;

/**

* Created by janga on 31-10-2016.

public class JsonFunction {

public JSONObject getJsonFromUrl(String url)

{

JSONObject jsonObject = null;

try {

URL jsonUrl=new URL(url);

HttpURLConnection connection= (HttpURLConnection) jsonUrl.openConnection();

InputStream is=new BufferedInputStream(connection.getInputStream());

BufferedReader bufferedReader=new BufferedReader(new InputStreamReader(is));

StringBuffer sb=new StringBuffer();

String line;

while ((line=bufferedReader.readLine())!=null)

{

sb.append(line+"\n");

}

is.close();

Log.i("sb",sb.toString());

jsonObject=new JSONObject(sb.toString());

} catch (MalformedURLException e) {

e.printStackTrace();

} catch (IOException e) {

e.printStackTrace();

} catch (JSONException e) {

e.printStackTrace();

}

return jsonObject;

}

public static JSONObject getJsonFromUrlparam(String url, String para)

{

JSONObject jsonObject = null;

try {

URL jsonUrl=new URL(url);

HttpURLConnection connection= (HttpURLConnection) jsonUrl.openConnection();

connection.setDoOutput(true);

connection.setDoInput(true);

connection.setConnectTimeout(60000);

connection.setRequestMethod("POST");

connection.setRequestProperty("Content-Type","application/x-www-form-urlencoded");

connection.setRequestProperty("Accept-Charset", "UTF-8");

connection.setRequestProperty("Accept", "application/json");

connection.setUseCaches(false);

connection.connect();

OutputStream mOutPut = new BufferedOutputStream(connection.getOutputStream());

mOutPut.write(para.getBytes());

mOutPut.flush();

InputStream is=new BufferedInputStream(connection.getInputStream());

BufferedReader bufferedReader=new BufferedReader(new InputStreamReader(is));

StringBuffer sb=new StringBuffer();

String line;

while ((line=bufferedReader.readLine())!=null)

{

sb.append(line+"\n");

}

is.close();

Log.i("json",sb.toString());

jsonObject=new JSONObject(sb.toString());

Log.i("json",""+jsonObject);

} catch (MalformedURLException e) {

e.printStackTrace();

} catch (IOException e) {

e.printStackTrace();

} catch (JSONException e) {

e.printStackTrace();

}

return jsonObject;

}

public static String getJsonUrlparamString(String url, String para)

{

StringBuffer sb = null;

try {

URL jsonUrl=new URL(url);

HttpURLConnection connection= (HttpURLConnection) jsonUrl.openConnection();

connection.setDoOutput(true);

connection.setDoInput(true);

connection.setConnectTimeout(60000);

connection.setRequestMethod("POST");

connection.setRequestProperty("Content-Type","application/x-www-form-urlencoded");

connection.setRequestProperty("Accept-Charset", "UTF-8");

connection.setRequestProperty("Accept", "application/json");

connection.setUseCaches(false);

connection.connect();

OutputStream mOutPut = new BufferedOutputStream(connection.getOutputStream());

mOutPut.write(para.getBytes());

mOutPut.flush();

InputStream is=new BufferedInputStream(connection.getInputStream());

BufferedReader bufferedReader=new BufferedReader(new InputStreamReader(is));

sb=new StringBuffer();

String line;

while ((line=bufferedReader.readLine())!=null)

{

sb.append(line+"\n");

}

is.close();

Log.i("json",sb.toString());

} catch (MalformedURLException e) {

e.printStackTrace();

} catch (IOException e) {

e.printStackTrace();

}

return sb.toString();

}

androidmanifest.xml

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

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

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

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

</manifest>

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

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

package="androiindian.listviewfromjson">

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

<application

android:allowBackup="true"

android:icon="@mipmap/ic_launcher"

android:label="@string/app_name"

android:supportsRtl="true"

android:theme="@style/AppTheme">

<intent-filter>

</intent-filter>

</activity>

</application>

</manifest>

Output:

li1 li3 li2

APPS in Play Store

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