我看了很多教程,但有些地方不对。我有简单的 mainactivity,它的布局上有一个 VideoView。我从 youtube 下载了一个视频,.mp4 文件大小约为 10 mb。我在 youtube 上找到了一个关于 videoview 的很棒的示例,链接如下。
https://www.youtube.com/watch?v=tPeDn18FrGY&t=75s
公共(public)类 MainActivity 扩展了 AppCompatActivity {
private VideoView bgVideo;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
bgVideo=(VideoView) findViewById(R.id.bg_videoview);
Uri uri = Uri.parse("android.resource://"+getPackageName()+"/"+R.raw.bgvideo);
bgVideo.setVideoURI(uri);
bgVideo.start();
bgVideo.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
@Override
public void onPrepared(MediaPlayer mp) {
mp.setLooping(true);
}
});
}
}
我使用 genymotion 模拟器。当我运行应用程序时出现“无法播放”错误。在 android 监视器上,类似这样的事情。
06-07 03:16:28.675 2146-2146/com.sample E/MediaPlayer: Error (1,-2147483648)
06-07 03:16:28.675 2146-2146/com.sample D/VideoView: Error: 1,-2147483648
06-07 03:16:28.692 2146-2146/com.sample E/MediaPlayer: Error (1,-2147483648)
06-07 03:16:28.692 2146-2146/com.sample D/VideoView: Error: 1,-2147483648
06-07 03:16:28.709 2146-2146/com.sample E/MediaPlayer: Error (1,-2147483648)
06-07 03:16:28.709 2146-2146/com.sample D/VideoView: Error: 1,-2147483648
06-07 03:16:28.742 2146-2146/com.sample E/MediaPlayer: Error (1,-32)
06-07 03:16:28.742 2146-2146/com.sample D/VideoView: Error: 1,-32
06-07 03:16:28.758 2146-2146/com.sample E/MediaPlayer: Error (1,-38)
06-07 03:16:28.758 2146-2146/com.sample D/VideoView: Error: 1,-38
06-07 03:16:29.526 2146-2146/com.sample I/Choreographer: Skipped 44 frames! The application may be doing too much work on its main thread.
我该如何解决?
最佳答案
您可以使用 MediaPlayer
对象并在一项服务中播放。这是示例代码:
public class Mp3PlayerService extends Service implements
MediaPlayer.OnCompletionListener, MediaPlayer.OnPreparedListener, MediaPlayer.OnErrorListener, MediaPlayer.OnSeekCompleteListener {
/** Android Built-in Media Player */
public MediaPlayer player;
/** Binder for Mp3 Service */
private final IBinder iBinder = new Mp3PlayerService.BackgroundAudioServiceBinder();
@Override
public void onCreate() {
super.onCreate();
player = new MediaPlayer();
player.setOnCompletionListener(this);
player = new MediaPlayer();
try {
playSongLocal();
playSongNetwork();
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (SecurityException e) {
e.printStackTrace();
} catch (IllegalStateException e) {
e.printStackTrace();
}
}
private void playsongLocal() {
AssetFileDescriptor afd;
player.reset();
try {
LogUtils.LOGE(TAG, "playing aaa.mp3");
afd = getApplicationContext().getAssets().openFd("aaa.mp3");
player.setDataSource(afd.getFileDescriptor(),afd.getStartOffset(),afd.getLength());
player.prepareAsync();
} catch (IOException e) {
e.printStackTrace();
}
}
private void playsongNetwork() {
player.reset();
try {
player.setDataSource(networkUrlLink);
player.prepareAsync();
} catch (IOException e) {
e.printStackTrace();
}
}
@Override
public IBinder onBind(Intent intent) {
return iBinder;
}
@Override
public boolean onUnbind(Intent intent) {
return super.onUnbind(intent);
}
public void onDestroy() {
if (player.isPlaying()) {
player.stop();
}
player.release();
}
/** return itself when beeing asked */
public class BackgroundAudioServiceBinder extends Binder {
public Mp3PlayerService getService() {
return Mp3PlayerService.this;
}
}
关于java - 如何在 Android 中将 .mp4 视频作为背景视频播放?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/44406382/