Can anyone solve my Android Fragment issue? [closed]

Try this

package com.example.myfragments;

import android.os.Bundle;
import android.app.Activity;
import android.app.FragmentManager;
import android.app.FragmentTransaction;
import android.content.res.Configuration;
import android.view.WindowManager;

public class MainActivity extends Activity {

   @Override
   protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);

      Configuration config = getResources().getConfiguration();

      FragmentManager fragmentManager = getFragmentManager();
      FragmentTransaction fragmentTransaction = 
      fragmentManager.beginTransaction();

      /**
      * Check the device orientation and act accordingly
      */
      if (config.orientation == Configuration.ORIENTATION_LANDSCAPE) {
         /**
         * Landscape mode of the device
         */
         LM_Fragment ls_fragment = new LM_Fragment();
         fragmentTransaction.replace(android.R.id.content, ls_fragment);
      }else{
         /**
         * Portrait mode of the device
         */
         PM_Fragment pm_fragment = new PM_Fragment();
         fragmentTransaction.replace(android.R.id.content, pm_fragment);
      }
      fragmentTransaction.commit();
   }

}

Create two fragment files LM_Fragement.java and PM_Fragment.java under com.example.mycontentprovider package.

Following is the content of LM_Fragement.java file:

package com.example.myfragments;

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


public class LM_Fragment extends Fragment{
   @Override
   public View onCreateView(LayoutInflater inflater,
      ViewGroup container, Bundle savedInstanceState) {
      /**
       * Inflate the layout for this fragment
       */
      return inflater.inflate(
      R.layout.lm_fragment, container, false);
   }
}

Following is the content of PM_Fragement.java file:

package com.example.myfragments;

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


public class PM_Fragment extends Fragment{
   @Override
   public View onCreateView(LayoutInflater inflater,
      ViewGroup container, Bundle savedInstanceState) {
      /**
       * Inflate the layout for this fragment
       */
      return inflater.inflate(
      R.layout.pm_fragment, container, false);
   }
}

Create two layout files lm_fragement.xml and pm_fragment.xml under res/layout directory.

Following is the content of lm_fragement.xml file:

<?xml version="1.0" encoding="utf-8"?>
   <LinearLayout
   xmlns:android="http://schemas.android.com/apk/res/android"
   android:orientation="vertical"
   android:layout_width="fill_parent"
   android:layout_height="fill_parent"
   android:background="#7bae16">

   <TextView
   android:layout_width="fill_parent"
   android:layout_height="wrap_content"
   android:text="@string/landscape_message"
   android:textColor="#000000"
   android:textSize="20px" />

<!-- More GUI components go here  -->

</LinearLayout>

Following is the content of pm_fragment.xml file:

<?xml version="1.0" encoding="utf-8"?>
   <LinearLayout
   xmlns:android="http://schemas.android.com/apk/res/android"
   android:orientation="horizontal"
   android:layout_width="fill_parent"
   android:layout_height="fill_parent"
   android:background="#666666">

   <TextView
   android:layout_width="fill_parent"
   android:layout_height="wrap_content"
   android:text="@string/portrait_message"
   android:textColor="#000000"
   android:textSize="20px" />

<!-- More GUI components go here  -->

</LinearLayout>

Following will be the content of res/layout/activity_main.xml file which includes your fragments:

<?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="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="horizontal">

   <fragment
   android:name="com.example.fragments"
   android:id="@+id/lm_fragment"
   android:layout_weight="1"
   android:layout_width="0dp"
   android:layout_height="match_parent" />

   <fragment
   android:name="com.example.fragments"
   android:id="@+id/pm_fragment"
   android:layout_weight="2"
   android:layout_width="0dp"
   android:layout_height="match_parent" />

</LinearLayout>

Make sure you have following content of res/values/strings.xml file:

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

    <string name="app_name">MyFragments</string>
    <string name="action_settings">Settings</string>
    <string name="hello_world">Hello world!</string>
    <string name="landscape_message">This is Landscape mode fragment
    </string>
    <string name="portrait_message">This is Portrait mode fragment
    </string>

</resources>

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