MediaManifest.xml

<application
       android:launchMode="singleTop"
       android:theme="@style/AppTheme">
   <activity android:name="com.example.android.mediaplayersample.MainActivity"
             android:configChanges="orientation">
       <intent-filter>
           <action android:name="android.intent.action.MAIN"/>
           <category android:name="android.intent.category.LAUNCHER"/>
       </intent-filter>
   </activity>
</application>