Exception when using YouTubePlayerFragment with FragmentActivity and ActionBarSherlock

Question

I am trying to implement a layout using the new YouTube Player API for Android . I currently have a simple layout:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical"> <fragment android:name="com.google.android.youtube.player.YouTubePlayerFragment" android:id="@+id/youtube_fragment" android:layout_width="match_parent" android:layout_height="wrap_content"/> <TextView android:layout_width="match_parent" android:layout_height="0dp" android:layout_weight="1" android:textAppearance="@android:style/TextAppearance.Small" android:gravity="center" android:text="Nothin"/> </LinearLayout> 

Now, in my work, I have the following:

 public class MainActivity extends FragmentActivity implements YouTubePlayer.OnInitializedListener 

I got the impression that using the fragment in my layout meant that I needed to use FragmentActivity (from android.support.v4.app.FragmentActivity). However, I get the following exception when I run this:

 java.lang.ClassCastException: com.google.android.youtube.player.YouTubePlayerFragment cannot be cast to android.support.v4.app.Fragment 

This works when I extend an Activity instead of a FragmentActivity. How can i fix this?

Answer 1

YouTubePlayerFragment inherits from android.app.Fragment, and you send it somewhere to the android.support.v4.app.Fragment file. If you want to use this class on older APIs, use YouTubePlayerSupportFragment, otherwise fix the import.