停止播放音频以播放其他音频

Question

在我试图完成的事情中，我还尝试过if语句，我测试过，如果mp.isplaying（）并且执行了mp.stop但没有运气。这都属于项目的主要类别。我在oncreate方法中没有任何内容

public class MainActivity extends AppCompatActivity {

MediaPlayer mp;

public void buttonTapped(View view){

    int id = view.getId();
    String ourId = "";
    ourId = view.getResources().getResourceEntryName(id);

    int resourceId = getResources().getIdentifier(ourId, "raw", getPackageName());

    mp = MediaPlayer.create(this, resourceId);
    mp.start();
    mp.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
        @Override
        public void onCompletion(MediaPlayer mp) {
            mp.release();
        }
    });
  //  Log.i("Stuff", viewId);
}
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
}

}

Answer 1

* * 中的代码应该可以解决问题。

public void buttonTapped(View view){

    int id = view.getId();
    String ourId = "";
    ourId = view.getResources().getResourceEntryName(id);

    int resourceId = getResources().getIdentifier(ourId, "raw", getPackageName());



 ***if(mp!=null){
         mp.release();
         mp=null;
         }***

    mp = MediaPlayer.create(this, resourceId);
    mp.start();
    mp.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
        @Override
        public void onCompletion(MediaPlayer mp) {
            mp.release();
        }
    });
  //  Log.i("Stuff", viewId);
}

Answer 2

在setOnCompletionListener中你释放了mp，同时添加了mp = null。

Answer 3

尝试以下代码： -

  

尝试
  {
                              MediaPlayer mp = new MediaPlayer（）;                               mp.setDataSource（birdsUrlList.get（位置）.getUrl_audio（））;
                              mp.prepare（）;
                              mp.setOnPreparedListener（new MediaPlayer.OnPreparedListener（）{
                                  @覆盖
                                  public void onPrepared（MediaPlayer mp）{
                                      mp.start（）;
                                  }
                              }）;
                              mp.setOnCompletionListener（new MediaPlayer.OnCompletionListener（）{
                                  @覆盖
                                  public void onCompletion（MediaPlayer mp）{                                         mp.stop（）
                                      mp.release（）;
                                  }
                              }）;
                              // startActivity（new Intent（Intent.ACTION_VIEW，   Uri.parse（birdsUrlList.get（位置）.getUrl_video（））））;                           } catch（例外e）{                               e.printStackTrace（）;                           }                       }