媒体播放器延迟启动

发布于 2024-10-16 05:36:57 字数 861 浏览 1 评论 0原文

我的媒体播放器在闲置一段时间后会延迟启动，有时还会不播放音频。

之前我使用了 setDataSource()，但这次我使用 create()。

作为参考，这是我正在使用的代码：

AssetFileDescriptor afd = _context.getResources().openRawResourceFd(this._soundResource.get(this._toBePlayed));
        mp = new MediaPlayer();
        mp.setDataSource(afd.getFileDescriptor(), afd.getStartOffset(), afd.getLength());
        afd.close();
        mp.setOnPreparedListener(new OnPreparedListener(){

            @Override
            public void onPrepared(MediaPlayer mp) {

                mp.start();
            }
        });
        mp.setOnCompletionListener(new OnCompletionListener(){

            @Override
            public void onCompletion(MediaPlayer mp) {

                mp.reset();
                mp.release();
            }
        });
        mp.prepareAsync();

原文

My media player delays its start when kept idle for some time, also some time it does not play the audio.

Earlier I used setDataSource(), but this time I am using create().

For reference this is the code I am using:

AssetFileDescriptor afd = _context.getResources().openRawResourceFd(this._soundResource.get(this._toBePlayed));
        mp = new MediaPlayer();
        mp.setDataSource(afd.getFileDescriptor(), afd.getStartOffset(), afd.getLength());
        afd.close();
        mp.setOnPreparedListener(new OnPreparedListener(){

            @Override
            public void onPrepared(MediaPlayer mp) {

                mp.start();
            }
        });
        mp.setOnCompletionListener(new OnCompletionListener(){

            @Override
            public void onCompletion(MediaPlayer mp) {

                mp.reset();
                mp.release();
            }
        });
        mp.prepareAsync();

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つ低調成傷 2024-10-23 05:36:57

我也遇到了 start() 的延迟问题。我用 mp.seekTo(0) 在 onPrepared 中修复了它，如下所示：

mp.setOnPreparedListener(new OnPreparedListener(){
    @Override
    public void onPrepared(MediaPlayer mp) {
        mp.seekTo(0);
        mp.start();
    }
});

I also had the delay problem for start(). I fixed it with mp.seekTo(0) in onPrepared like this:

mp.setOnPreparedListener(new OnPreparedListener(){
    @Override
    public void onPrepared(MediaPlayer mp) {
        mp.seekTo(0);
        mp.start();
    }
});

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江湖正好 2024-10-23 05:36:57

我使用文件输入流。您没有设置AudioStreamType。以下是我设置 MediaPlayer 的方法。

   public void setupMediaPlayer(){
    mp = new MediaPlayer();
    mp.setAudioStreamType(AudioManager.STREAM_MUSIC);

    try {
        fis = new FileInputStream(tempFilePath);
        mp.setDataSource(fis.getFD());
        mp.prepare();
        mp.setOnPreparedListener(this);
    } catch (FileNotFoundException e) {
        e.printStackTrace();
    } catch (IllegalArgumentException e) {
        e.printStackTrace();
    } catch (IllegalStateException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }
}

tempFilePath 是文件的路径。

我还在此类中实现了 setOnPreparedListener 在我看来，这使您的代码更具可读性。

还有一个很好的参考链接：MediaPlayer 状态图

I use a FileInputStream. You didn't set the AudioStreamType. Here is how I setup my MediaPlayer.

   public void setupMediaPlayer(){
    mp = new MediaPlayer();
    mp.setAudioStreamType(AudioManager.STREAM_MUSIC);

    try {
        fis = new FileInputStream(tempFilePath);
        mp.setDataSource(fis.getFD());
        mp.prepare();
        mp.setOnPreparedListener(this);
    } catch (FileNotFoundException e) {
        e.printStackTrace();
    } catch (IllegalArgumentException e) {
        e.printStackTrace();
    } catch (IllegalStateException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }
}

tempFilePath is the path to the file.

I also implement setOnPreparedListener in this class which makes your code a lot more readable in my opinion.

Also Great link to reference: MediaPlayer State Diagram

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