activity_main.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="iterator.ir.a029.MainActivity"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentTop="true" android:layout_centerHorizontal="true" android:layout_marginTop="22dp" android:id="@+id/textView" android:text="@string/fragment_demo" android:textAppearance="@style/TextAppearance.AppCompat.Large" /> <RelativeLayout android:layout_width="match_parent" android:layout_height="300dp" android:layout_below="@+id/textView" android:layout_alignParentLeft="true" android:layout_alignParentStart="true" android:layout_alignLeft="@+id/textView" android:layout_alignStart="@+id/textView" android:layout_marginTop="30dp" android:id="@+id/relativeLayoutFragment"> </RelativeLayout> <Button android:text="First" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentBottom="true" android:layout_alignParentLeft="true" android:layout_alignParentStart="true" android:layout_marginLeft="36dp" android:layout_marginStart="36dp" android:layout_marginBottom="23dp" android:id="@+id/buttonFirstFragment" /> <Button android:text="Second" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignBottom="@+id/buttonFirstFragment" android:layout_alignParentRight="true" android:layout_alignParentEnd="true" android:layout_marginRight="39dp" android:layout_marginEnd="39dp" android:id="@+id/buttonSecondFragment" /> </RelativeLayout>
MainActivity.java
public class MainActivity extends AppCompatActivity { Button buttonFirst; Button buttonSecond; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); final FragmentManager fragmentManager=getSupportFragmentManager(); final FragmentTransaction fragmentTransaction=fragmentManager.beginTransaction(); FirstFragment firstFragment=new FirstFragment(); fragmentTransaction.add(R.id.relativeLayoutFragment,firstFragment); fragmentTransaction.commit(); buttonFirst= (Button) findViewById(R.id.buttonFirstFragment); buttonSecond= (Button) findViewById(R.id.buttonSecondFragment); buttonFirst.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { final FragmentManager fragmentManager=getSupportFragmentManager(); final FragmentTransaction fragmentTransaction=fragmentManager.beginTransaction(); FirstFragment firstFragment=new FirstFragment(); fragmentTransaction.replace(R.id.relativeLayoutFragment,firstFragment); fragmentTransaction.commit(); } }); buttonSecond.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { final FragmentManager fragmentManager=getSupportFragmentManager(); final FragmentTransaction fragmentTransaction=fragmentManager.beginTransaction(); SecondFragment secondFragment=new SecondFragment(); fragmentTransaction.replace(R.id.relativeLayoutFragment,secondFragment); fragmentTransaction.commit(); } }); } }
References
https://github.com/mhdr/AndroidSamples/tree/master/029