AndroidFragmentTransaction

Android Fragment exchange (or) "Fragment Transaction" to handle sections. Android Fragment are valuable when we need to bolster different screen measure. To oversee parts we require a FragmentManager that help us to handle Android piece trasaction between sections. With Android part exchange we mean a succession of ventures to include, supplant or evacuate pieces. In the last post we demonstrated to bolster numerous screen size and introduction utilizing sections.

code for FragmentTransactin shown below.

activity_main.xml :-

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

<LinearLayout

 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" 

 android:orientation="vertical" 

 tools:context="com.fragmenttransaction.MainActivity">

<Button 

 android:layout_width="wrap_content" 

 android:layout_height="wrap_content" 

 android:text="fragA" 

 android:id="@+id/button" 

 android:layout_alignParentTop="true" 

 android:layout_centerHorizontal="true" />

<Button 

 android:layout_width="wrap_content" 

 android:layout_height="wrap_content" 

 android:text="fragB" 

 android:id="@+id/button2" 

 android:layout_below="@+id/button" 

 android:layout_centerHorizontal="true" />

<FrameLayout 

 android:layout_width="match_parent" 

 android:layout_height="match_parent" 

 android:layout_centerHorizontal="true" 

 android:id="@+id/myframe" 

 android:background="#decaca">

</FrameLayout>
</LinearLayout>

fraga.xml :-

<?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:background="#811313">

<TextView 

 android:layout_width="209dp" 

 android:layout_height="54dp" 

 android:textAppearance="?android:attr/textAppearanceLarge" 

 android:text="this fragment A" 

 android:id="@+id/textView" 

 android:layout_gravity="center_horizontal" />
</LinearLayout>

fragb.xml :-

<?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:background="#be6f6f">

<TextView 

 android:layout_width="wrap_content" 

 android:layout_height="wrap_content" 

 android:textAppearance="?android:attr/textAppearanceLarge" 

 android:text="fragment B" 

 android:id="@+id/textView2" 

 android:layout_gravity="center_horizontal" />
</LinearLayout>

MainActivity.java :-

package com.fragmenttransaction;

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

public class MainActivity extends AppCompatActivity implements

                                                   View.OnClickListener {
 Button b1,b2;
 FragmentManager fragmentManager;
 FragmentTransaction fragmentTransaction,fragmentTransaction1;


@Override 

 protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.activity_main);
 fragmentManager=getFragmentManager();
 b1=(Button)findViewById(R.id.button);
 b2=(Button)findViewById(R.id.button2);
 b1.setOnClickListener(this);
 b2.setOnClickListener(this);
 }

 @Override 

 public void onClick(View v) {
 switch (v.getId()) {
 case R.id.button:
 fragmentTransaction=fragmentManager.beginTransaction();
 fragA fragA=new fragA();
 fragmentTransaction.add(R.id.myframe,fragA);
 fragmentTransaction.commit();
 break;
 case R.id.button2:
 fragmentTransaction1=fragmentManager.beginTransaction();
 frabB frabB=new frabB();
 fragmentTransaction1.add(R.id.myframe,frabB);
 fragmentTransaction1.commit();
 break;
 }
 }
}

FragA.java :-

package com.fragmenttransaction;

import android.app.Fragment;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

/** * Created by Dell on 7/11/2016. */

public class fragA extends Fragment {
@Nullable 

@Override 

 public View onCreateView(LayoutInflater inflater, ViewGroup container, 

                                                  Bundle savedInstanceState) {

 return inflater.inflate(R.layout.fraga,container,false);
 }
}

FragB.java :-

package com.fragmenttransaction;

import android.app.Fragment;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

/** * Created by Dell on 7/11/2016. */

 public class frabB extends Fragment {
@Nullable 

@Override 

 public View onCreateView(LayoutInflater inflater, ViewGroup container,

                                                 Bundle savedInstanceState) {

 return inflater.inflate(R.layout.fragb,container,false);
 }
}

Output :-

AndroidFragmentTransaction fig:1

AndroidFragmentTransaction fig:2

AndroidFragmentTransaction fig:3