Fragment With DataBinding

July 4, 2019July 5, 2019 androindian

3456 views.

Hi Viewers now a days everyone are using Data Binding in their development so this example will how to deal Fragment with Data binding.
<br />

1. Add Data Binfing in Gradle

apply plugin: 'com.android.application'

android {
    compileSdkVersion 28
    defaultConfig {
        applicationId "com.androindian.fragment"
        minSdkVersion 15
        targetSdkVersion 28
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            dataBinding.enabled=true
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'com.android.support:appcompat-v7:28.0.0'
    implementation 'com.android.support.constraint:constraint-layout:1.1.3'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:1.0.2'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
}

apply plugin: 'com.android.application'

android {

compileSdkVersion 28

defaultConfig {

applicationId "com.androindian.fragment"

minSdkVersion 15

targetSdkVersion 28

versionCode 1

versionName "1.0"

testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"

}

buildTypes {

release {

dataBinding.enabled=true

minifyEnabled false

proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'

}

dependencies {

implementation fileTree(dir: 'libs', include: ['*.jar'])

implementation 'com.android.support:appcompat-v7:28.0.0'

implementation 'com.android.support.constraint:constraint-layout:1.1.3'

testImplementation 'junit:junit:4.12'

androidTestImplementation 'com.android.support.test:runner:1.0.2'

androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'

}

Then will continue with normal program

MainActivity.java

package com.androindian.fragment;

import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

public class MainActivity extends AppCompatActivity {

    Button button;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        button=findViewById(R.id.a1);

        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                FragmentTransaction ft=
                        getSupportFragmentManager().beginTransaction();
                FirstFrag firstFrag=new FirstFrag();
                //ft.addToBackStack("firstFrag");
                ft.replace(R.id.frame,firstFrag);
                ft.commit();

            }
        });
    }
}

package com.androindian.fragment;

import android.support.v4.app.Fragment;

import android.support.v4.app.FragmentManager;

import android.support.v4.app.FragmentTransaction;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.view.View;

import android.widget.Button;

public class MainActivity extends AppCompatActivity {

Button button;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

button=findViewById(R.id.a1);

button.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v) {

FragmentTransaction ft=

getSupportFragmentManager().beginTransaction();

FirstFrag firstFrag=new FirstFrag();

//ft.addToBackStack("firstFrag");

ft.replace(R.id.frame,firstFrag);

ft.commit();

}

});

}

activity_main.xml

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

   <LinearLayout
       android:layout_width="match_parent"
       android:layout_height="wrap_content"
       android:layout_weight="1"
       android:orientation="vertical"
       android:background="@color/colorPrimaryDark">
       <TextView
           android:layout_width="match_parent"
           android:layout_height="wrap_content"
           android:text="Welcome to Activity"/>
       <Button
           android:layout_width="match_parent"
           android:layout_height="wrap_content"
           android:id="@+id/a1"
           android:text="Call f1"/>
   </LinearLayout>
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:orientation="vertical"
        android:background="@color/colorAccent">
        <FrameLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:id="@+id/frame"></FrameLayout>
    </LinearLayout>
</LinearLayout>

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

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

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

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

android:layout_width="match_parent"

android:layout_height="match_parent"

tools:context=".MainActivity"

android:orientation="vertical">

<LinearLayout

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:layout_weight="1"

android:orientation="vertical"

android:background="@color/colorPrimaryDark">

<TextView

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:text="Welcome to Activity"/>

<Button

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:id="@+id/a1"

android:text="Call f1"/>

</LinearLayout>

<LinearLayout

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:layout_weight="1"

android:orientation="vertical"

android:background="@color/colorAccent">

<FrameLayout

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:id="@+id/frame"></FrameLayout>

</LinearLayout>

FirstFrag.java

package com.androindian.fragment;

import android.databinding.DataBindingUtil;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentTransaction;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;

import com.androindian.fragment.databinding.FirstfragBinding;

public class FirstFrag extends Fragment {

        FirstfragBinding firstfragBinding;
    @Nullable
    @Override
    public View onCreateView
            (@NonNull LayoutInflater inflater,
             @Nullable ViewGroup container,
             @Nullable Bundle savedInstanceState) {
      firstfragBinding= DataBindingUtil.inflate(inflater,
              R.layout.firstfrag,null,false);



     firstfragBinding.callf.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                FragmentTransaction ft=getFragmentManager().beginTransaction();
                SecondFrag secondFrag=new SecondFrag();
                ft.replace(R.id.frame,secondFrag);
                ft.commit();
            }
        });


        return firstfragBinding.getRoot();
    }
}

package com.androindian.fragment;

import android.databinding.DataBindingUtil;

import android.os.Bundle;

import android.support.annotation.NonNull;

import android.support.annotation.Nullable;

import android.support.v4.app.Fragment;

import android.support.v4.app.FragmentTransaction;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

import android.widget.Button;

import com.androindian.fragment.databinding.FirstfragBinding;

public class FirstFrag extends Fragment {

FirstfragBinding firstfragBinding;

@Nullable

@Override

public View onCreateView

(@NonNull LayoutInflater inflater,

@Nullable ViewGroup container,

@Nullable Bundle savedInstanceState) {

firstfragBinding= DataBindingUtil.inflate(inflater,

R.layout.firstfrag,null,false);

firstfragBinding.callf.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v) {

FragmentTransaction ft=getFragmentManager().beginTransaction();

SecondFrag secondFrag=new SecondFrag();

ft.replace(R.id.frame,secondFrag);

ft.commit();

}

});

return firstfragBinding.getRoot();

}

firstfrag.xml

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

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

    <Button
        android:id="@+id/callf"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Call f2" />

    <Button
        android:id="@+id/button2"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Button" />

    <ImageView
        android:id="@+id/imageView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:srcCompat="@mipmap/ic_launcher" />
</LinearLayout>
</layout>

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

<layout

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

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

<LinearLayout

android:layout_width="match_parent"

android:layout_height="match_parent"

android:orientation="vertical">

<Button

android:id="@+id/callf"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:text="Call f2" />

<Button

android:id="@+id/button2"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:text="Button" />

<ImageView

android:id="@+id/imageView"

android:layout_width="match_parent"

android:layout_height="wrap_content"

app:srcCompat="@mipmap/ic_launcher" />

</LinearLayout>

</layout>

SecondFrag.java

package com.androindian.fragment;

import android.content.Intent;
import android.databinding.DataBindingUtil;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;

import com.androindian.fragment.databinding.SecondBinding;

public class SecondFrag extends Fragment {

    SecondBinding secondBinding;
    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        /*View view=inflater.inflate(R.layout.second,
                container,false);*/
        secondBinding= DataBindingUtil.inflate(inflater,R.layout.second,null,false);



        secondBinding.callact.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent=new Intent(getActivity(),Welcome.class);
                startActivity(intent);
            }
        });



        return secondBinding.getRoot();
    }
}

package com.androindian.fragment;

import android.content.Intent;

import android.databinding.DataBindingUtil;

import android.os.Bundle;

import android.support.annotation.NonNull;

import android.support.annotation.Nullable;

import android.support.v4.app.Fragment;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

import android.widget.Button;

import com.androindian.fragment.databinding.SecondBinding;

public class SecondFrag extends Fragment {

SecondBinding secondBinding;

@Nullable

@Override

public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {

/*View view=inflater.inflate(R.layout.second,

container,false);*/

secondBinding= DataBindingUtil.inflate(inflater,R.layout.second,null,false);

secondBinding.callact.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v) {

Intent intent=new Intent(getActivity(),Welcome.class);

startActivity(intent);

}

});

return secondBinding.getRoot();

}

second.xml

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

    <Button
        android:id="@+id/callact"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Call Activity" />
</LinearLayout>
</layout>

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

<layout

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

<LinearLayout

android:layout_width="match_parent"

android:layout_height="match_parent"

android:orientation="vertical">

<Button

android:id="@+id/callact"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:text="Call Activity" />

</LinearLayout>

</layout>

Welcome.java

package com.androindian.fragment;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;

public class Welcome extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_welcome);
    }
}

package com.androindian.fragment;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

public class Welcome extends AppCompatActivity {

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_welcome);

}

activity_welcome.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".Welcome">

</android.support.constraint.ConstraintLayout>

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

<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"

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

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

android:layout_width="match_parent"

android:layout_height="match_parent"

tools:context=".Welcome">

</android.support.constraint.ConstraintLayout>

Manifest.xml

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

    <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">
        <activity android:name=".Welcome"></activity>
        <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.fragment">

<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">

<intent-filter>

</intent-filter>

</activity>

</application>

</manifest>

Output

Fragment With DataBinding

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