android - 在状态 0 下调用媒体播放器，错误 (-38,0) 错误

Question

我正在尝试使用从按钮调用的这段代码，但它不起作用，当我看到 LogCat 窗口时，我发现媒体播放器在状态 0 下调用，错误 (-38,0)

public void audioPlayer(String path, String fileName){

//set up MediaPlayer    
        MediaPlayer mp = new MediaPlayer();

        try {
            mp.setDataSource(HeyActivity.this, Uri.parse(path+"/"+fileName));
        } catch (IllegalArgumentException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IllegalStateException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        try {
            mp.prepare();
        } catch (IllegalStateException e) {
            // TODO Auto-generated catch block
            System.out.print("hey");
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

        mp.start();

    }

Answer 1

尝试设置OnPreparedListener并调用其中的start方法。像这样:

MediaPlayer mp = new MediaPlayer();
mp.setOnPreparedListener( new OnPreparedListener() {

    public void onPrepared(MediaPlayer mp) {
        mp.start();
    }
}; 
);