VideoView视频播放

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Uri uri = Uri.parse(url); //网络视频

mVideoView = (VideoView) findViewById(R.id.videoView);

mVideoView.setMediaController(new MediaController(this)); //设置控制器，系统自带的控制器

mVideoView.setVideoURI(uri); //设置视频源

mVideoView.start();

mVideoView.requestFocus();
//Call this to try to give focus to a specific view or to one of its descendants.

//称这个是试图把焦点集中在明确的view或者其子类中，请求焦点

mVideoView.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
            @Override
            public void onCompletion(MediaPlayer mp) {
                // TODO Auto-generated method stub
            Toast.makeText(getApplicationContext(), "视频播放结束了", 1).show();
            }
        });
//Register a callback to be invoked when the end of a media file has been reached during playback.
//登记回调以便在media文件达到播放结束的时候调用。播放完成后调用，即监听播放完成

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