Android VideoView OnCompletionListener 不工作

Question

我正在尝试实现一个简单的 VideoView 来播放文件系统中的视频。视频加载和播放都很好。但是，我想知道视频何时结束播放，以便我可以完成() Activity 并继续下一个 Activity 。这是我的。

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/videoPlayer"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:keepScreenOn="true"
    android:orientation="vertical" >
    <VideoView
        android:id="@+id/videoView"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent" />
</LinearLayout>

Activity 如下。

    public void onCreate(Bundle savedInstanceState)
    {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.videoplayer);

    videoView = (VideoView) findViewById(R.id.videoView);
    videoView.setOnCompletionListener(new MediaPlayer.OnCompletionListener()
    {
        @Override
        public void onCompletion(MediaPlayer mp)
        {
            Intent result = new Intent();
            setResult(1, result);
            finish();
        }
    }); // video finish listener

    Intent intent = getIntent();

    // Receiving the Data
    String fileName = intent.getStringExtra("fileName");

    videoView.setVideoPath(fileName);
    videoView.setMediaController(new MediaController(this));
    videoView.requestFocus();
    videoView.start();}

我从另一个 Activity 中调用此 Activity 。这是 Activity 定义。

    <?xml version="1.0" encoding="utf-8"?>
    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:id="@+id/gallery"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:orientation="vertical"
        android:keepScreenOn="true">

        <ImageView
            android:id="@+id/imageView"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:contentDescription="@string/imageViewDescription" />
    </LinearLayout>

VideoPlayer Activity 类

public void onCreate(Bundle savedInstanceState)
{
    super.onCreate(savedInstanceState);

    requestWindowFeature(Window.FEATURE_NO_TITLE);

    getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);

    setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);

    setContentView(R.layout.imageplayer);

    imageView = (ImageView) findViewById(R.id.imageView);

    updateUI(new File("/sdcard/Test/Test.3gp");
}

public void updateUI(File file)
{
        if (file.getName().toLowerCase().endsWith(".jpg") || file.getName().toLowerCase().endsWith(".png"))
        {
            Bitmap myBitmap = BitmapFactory.decodeFile(file.getAbsolutePath());

            imageView.setImageBitmap(myBitmap);
        }
        else if (file.getName().toLowerCase().endsWith(".3gp") || file.getName().toLowerCase().endsWith(".mp4"))
        {
            //Starting a new Intent
            Intent nextScreen = new Intent(getApplicationContext(), VideoPlayer.class);

            //Sending data to another Activity
            nextScreen.putExtra("fileName", file.getAbsolutePath());

            released = false;

            startActivityForResult(nextScreen, resultCode);
        }
    }
}

public void onActivityResult(int requestCode, int resultCode, Intent data)
{
    super.onActivityResult(requestCode, resultCode, data);
}

永远不会调用 onCompletion 方法，也不会调用此 Activity 调用者中的 onActivityResult() 方法。我想知道这有什么问题。我尝试同时播放“.3gp”和“.mp4”文件，结果相同。请帮忙

Answer 1

在 onPreparedListener 中调用 videoView.start() 并使用 false 值设置 mediaplayer 对象循环。我希望这会奏效..喜欢如下:

videoView.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
                @Override
                public void onPrepared(MediaPlayer mp) {
                    mp.setLooping(false); //make sure to use this statement
                    video.start();
                    Toast.makeText(mContext,String.valueOf(vtime),Toast.LENGTH_LONG).show();
               }
     });