Static and dynamic addition of fragments (differentiate between phones and tablets)

I. static Fragmentation management

1. Create a New Left fragment layout:

<?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" >
<button
Android:id= "@+id/button"
Android:layout_gravity= "Center_horizontal"
Android:layout_width= "Wrap_content"
android:layout_height= "Wrap_content"
android:text= "button"/>
</LinearLayout>

2. Create a New Right fragment layout:

 <?xml version= "1.0" encoding= "Utf-8"? 
 <linearlayout xmlns:android= "http://schemas.android.com/ Apk/res/android "
     android:orientation=" vertical "
     android:background=" #00ff00 "
     android:layout_width=" match_parent "
     android:layout_height=" Match_parent 
     <textview 
         android: Layout_width= "Wrap_content" 
         android:layout_height= "Wrap_content" 
         android:layout_gravity= "Center_horizontal" 
          android:textsize= "20sp" 
         android:text= " This was right Fragment "/> 
 </linearlayout> 
 
 3. New Leftfragment class:// Overridden the Oncreateview method 
 
  public class Leftfragment extends Fragment {

@Nullable
@Override
Public View Oncreateview (Layoutinflater inflater, @Nullable viewgroup container, @Nullable Bundle savedinstancestate) {
View view=inflater.inflate (r.layout.  Left_fragment, Container,false);
return view;
}
}

4. New Rightfragment class:

public class Rightfragment extends Fragment {
@Nullable
@Override
Public View Oncreateview (Layoutinflater inflater, @Nullable viewgroup container, @Nullable Bundle savedinstancestate) {
View view=inflater.inflate (r.layout.  Right_fragment, Container,false);
return view;
}
}

5. Modify the Activity_main.xml code:

<?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"
Android:layout_width= "Match_parent"
android:layout_height= "Match_parent"
android:orientation= "Horizontal" >
<fragment
Android:id= "@+id/left_fragment"
Android:name= "Com.example.fragmenttest.LeftFragment"
Android:layout_width= "0DP"
android:layout_height= "Match_parent"
android:layout_weight= "1"
></fragment>
<fragment
Android:id= "@+id/right_fragment"
Android:name= "Com.example.fragmenttest.RightFragment"
Android:layout_width= "0DP"
android:layout_height= "Match_parent"
android:layout_weight= "1"
></fragment>
</LinearLayout>
6. Running results

Two. adding fragments dynamically

Target: Add click function to the button on the left, dynamically change the background color of the right to yellow, the content is the this is another-fragment.

1. Create a new Right_fragment.xml file with the following code:

<?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= "#ffff00" >
<textview
Android:layout_width= "Wrap_content"
android:layout_height= "Wrap_content"
Android:layout_gravity= "Center_horizontal"
Android:textsize= "20SP"
Android:text= "This was another right fragment"/>
</LinearLayout>

2. Create a new Java class for anotherrightfragment, overriding the Oncreateview method. Code:

public class Anotherrightfragment extends fragment{

@Nullable
@Override
Public View Oncreateview (Layoutinflater inflater, @Nullable viewgroup container, @Nullable Bundle savedinstancestate) {
View view=inflater.inflate (r.layout.  Another_right_fragment, Container,false);
return view;
}
}

3. Change the code in the 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"
Android:layout_width= "Match_parent"
android:layout_height= "Match_parent"
android:orientation= "Horizontal" >
<fragment
Android:id= "@+id/left_fragment"
Android:name= "Com.example.fragmenttest.LeftFragment"
Android:layout_width= "0DP"
android:layout_height= "Match_parent"
android:layout_weight= "1"
></fragment>
<framelayout
Android:id= "@+id/right_layout"
Android:layout_width= "0DP"
android:layout_height= "Match_parent"
android:layout_weight= "1" ></FrameLayout>
</LinearLayout>

4. Modify the code in the mainactivity:

public class Mainactivity extends appcompatactivity implements view.onclicklistener{
@Override
protected void OnCreate (Bundle savedinstancestate) {
Super.oncreate (savedinstancestate);
Setcontentview (r.layout.Activity_main);
Button button= (button) Findviewbyid (r.id.Button);
Button.setonclicklistener (this);
Replacefragment (New Rightfragment ());
}
@Override
public void OnClick (View v) {
Switch (V.getid ()) {
Case R.id.Button:
Replacefragment (New Anotherrightfragment ());
Break
Default
Break
}
}
private void Replacefragment (Fragment Fragment) {
Fragmentmanager Fragmentmanager=getsupportfragmentmanager ();
Fragmenttransaction transaction=fragmentmanager.begintransaction ();
Transaction.replace (r.id.Right_layout, fragment);
Transaction.commit ();
}
}

5. Dynamic Fragmentation Management results:

Static and dynamic addition of fragments (differentiate between phones and tablets)