Demo:
1) Activity:
 
package
com.venky.fragmentdemo;
import
android.annotation.SuppressLint;
import
android.app.Activity;
import
android.app.Fragment;
import
android.os.Bundle;
import
android.view.LayoutInflater;
import
android.view.View;
import
android.view.ViewGroup;
public class MainActivity extends Activity {
      @Override
      protected void onCreate(Bundle
savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
      }
      @SuppressLint("NewApi")
      public static class MyFragment extends Fragment {
            @Override
            public View
onCreateView(LayoutInflater inflater, ViewGroup container,
                        Bundle
savedInstanceState) {
                  // TODO
Auto-generated method stub
                  View view =
inflater.inflate(R.layout.fragment_style, container,
                              false);
                  return view;
            }
      }
}
2) main.xml:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/LinearLayout1"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context=".MainActivity"
>
    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:layout_marginBottom="10dp"
        android:layout_marginTop="10dp"
        android:text="Fragment Demo"
        android:textSize="25dp"
/>
    <fragment
        android:id="@+id/fragment1"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        class="com.venky.fragmentdemo.MainActivity$MyFragment"
/>
</LinearLayout>
3) fragment_xml: 
<?xml version="1.0"
encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#5F04B4"
    android:orientation="vertical"
>
    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:layout_marginTop="20dp"
        android:text="This is
Fragment Area"
        android:textColor="#ffffff"
        android:textSize="25dp"
/>
</LinearLayout>
4) Download this Project Click Here 

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