xml - youtube android api error render on android studio -

i program app android view youtube . have problem android studio. copy youtubeandroidplayerapi.jar folder libs , code in java fine , in xml has error

 rendering problems following classes not found com.google.android.youtube.player.youtubeplayerview (fix build path, create class) 

tip: try build project.

i try build project have same error. here code

<relativelayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:paddingleft="@dimen/activity_horizontal_margin" android:paddingright="@dimen/activity_horizontal_margin" android:paddingtop="@dimen/activity_vertical_margin" android:paddingbottom="@dimen/activity_vertical_margin" tools:context=".mainactivity">  <com.google.android.youtube.player.youtubeplayerview     android:id="@+id/youtube_player"     android:layout_width="match_parent"     android:layout_height="wrap_content"     android:background="#fff"     android:padding="5dp" /> 

please :d tks

i recomend adding fragment programatically in code this:

youtubeplayersupportfragment videostreamingplayerfragment = youtubeplayersupportfragment.newinstance();     videostreamingplayerfragment.initialize(mdevkey, new playerinitializedlistener());      fragmenttransaction ft = getchildfragmentmanager().begintransaction();                       ft.replace(r.id.container, videostreamingplayerfragment);     ft.commitallowingstateloss(); 

in case want use view instead of fragment add function addview:

youtubeplayerview youtubeview = new youtubeplayerview(this);         youtubeview.initialize(mdevkey, new playerinitializedlistener());         framelayout youtubecontainer = (framelayout) findviewbyid(r.id.youtubecontainer);          youtubecontainer.addview(myoutubeview); 

the activity operation must extend youtubebaseactivity