android - Videoview Android 崩溃

Question

我目前正在使用 eclipse 开发 Android 应用程序。但是，当我放置 videoView 后，应用程序崩溃了。我放置了 onCompletionListener，这样如果视频结束，它会自动跳转到主要 Activity 。这是我的视频 View 代码:

@Override
     public void onCreate(Bundle savedInstanceState) {
     super.onCreate(savedInstanceState);
     setContentView(R.layout.view_video);

     playVideo();
}

public void playVideo(){
         VideoView myVideoView = (VideoView)findViewById(R.id.myvideoview);
         setContentView(myVideoView);

         Uri video = Uri.parse("android.resource://" + getPackageName() + "/" + R.raw.endingvid);
         myVideoView.setVideoURI(video);
         myVideoView.setOnCompletionListener(new OnCompletionListener() {
           public void onCompletion(MediaPlayer mp) {
            jumpMain();
           }

          });
         myVideoView.start();
}

这是 xml:

<?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:layout_gravity="center_vertical|center"
   android:background="@drawable/black"
   >

    <VideoView
   android:id="@+id/myvideoview"
   android:layout_width="fill_parent"
   android:layout_height="wrap_content" />
</LinearLayout>

有人知道我的代码有什么问题吗？

Answer 1

 VideoView myVideoView = (VideoView)findViewById(R.id.myvideoview);
 setContentView(myVideoView);

在使用 setContentView 设置布局之前，无法引用 R.id.myvideoview

setContentView(R.layour.layout_with_videoview); 
VideoView myVideoView = (VideoView)findViewById(R.id.myvideoview);