[英]Audio Playing But Video not Showing in VideoView Android (Black Screen in Low Internet)
我正在研究Android中的視頻流。 當我想在低互聯網速度下播放視頻視頻時,VideoView顯示黑屏並沒有出現,但音頻播放正常。 我看到這些鏈接link1和link2 。 但這些鏈接無法幫助我。 這是我的代碼快照: -
private void playvideo(String url){
final MediaController mediacontroller;
try {
mediacontroller = new MediaController(MainActivity.this);
mediacontroller.setAnchorView(videoView);
final Uri video = Uri.parse(url);
videoView.setMediaController(mediacontroller);
videoView.setVideoURI(video);
videoView.requestFocus();
videoView.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
// Close the progress bar and play the video
public void onPrepared(MediaPlayer mp) {
mp.start();
mp.setOnErrorListener(new MediaPlayer.OnErrorListener() {
@Override
public boolean onError(MediaPlayer mediaPlayer, int what, int extra) {
if (extra == MediaPlayer.MEDIA_ERROR_SERVER_DIED
|| extra == MediaPlayer.MEDIA_ERROR_MALFORMED) {
Log.e(TAG , "MEDIA_ERROR_SERVER_DIED && MEDIA_ERROR_MALFORMED");
Toast.makeText(MainActivity.this , "Server Died or Malformed" , Toast.LENGTH_LONG).show();
return true;
} else if (extra == MediaPlayer.MEDIA_ERROR_IO) {
Log.e(TAG , "MediaPlayer.MEDIA_ERROR_IO");
Toast.makeText(MainActivity.this , "Media Error IO" , Toast.LENGTH_LONG).show();
return true;
}else if (extra == MediaPlayer.MEDIA_ERROR_UNKNOWN){
Log.e(TAG , ".MEDIA_ERROR_UNKNOWN");
Toast.makeText(MainActivity.this , "MEDIA ERROR UNKNOWN" , Toast.LENGTH_LONG).show();
return true;
}
return false;
}
});
mp.setOnBufferingUpdateListener(new MediaPlayer.OnBufferingUpdateListener() {
@Override
public void onBufferingUpdate(MediaPlayer mediaPlayer, int percentage) {
Log.e(TAG , "onBufferingUpdate :- " + percentage);
}
});
progressBar.setVisibility(View.GONE);
videoView.start();
}
});
} catch (Exception e) {
Log.e("Error", e.getMessage());
progressBar.setVisibility(View.GONE);
Toast.makeText(getApplicationContext() ,"URL is Wrong Test with other URL" , Toast.LENGTH_LONG).show();
e.printStackTrace();
}
}
因為音頻和視頻都是不同的流,所以在低互聯網上它能以某種方式下載音頻流而不是視頻流,是嗎? 所以在這種情況下,可以向用戶顯示一條消息,如“你有低互聯網再試一次”而不播放音頻?
謝謝
嘗試使用Exoplayer,它是Android的MediaPlayer API的替代品,用於在本地和通過Internet播放音頻和視頻。
我建議你使用SurfaceView。
surfaceView = (SurfavceView) findView.....;
holder = surfaceView.getHolder();
holder.addCallback(this); // implement SurfaceHolder.Callback methods
然后在surfaceCreated方法中:
mediaPlayer.setDisplay(holder);
mediaPlayer.setDataSource(mVideoUrl);
mediaPlayer.prepareAsync();
您也可以使用https://github.com/anthorlop/EasyExoPlayer
它使用ExoPlayer for Android SDK> = 16和MediaPlayer for Android <16。
我希望這個對你有用。
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