Question

这是使用MediaPlayer的正确方法吗？

public class MainActivity extends AppCompatActivity{


        MediaPlayer sound1, sound2, sound3, sound4;

        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);


            //Sound MediaPlayers
            sound1= MediaPlayer.create(this, R.raw.sound1);
            sound2= MediaPlayer.create(this, R.raw.sound2);
            sound3= MediaPlayer.create(this, R.raw.sound3);
            sound4= MediaPlayer.create(this, R.raw.sound4);

        }


    //sound onClick's 
    public void sound1(View view){
        sound1.start();
    }
    public void sound2(View view){
        sound2.start();
    }
    public void sound3(View view){
        sound3.start();
    }
    public void sound4(View view){
        sound4.start();
    }

}

我必须清理MediaPlayer，但我不知道如何做到这一点。我知道我必须使用sound1.release()，但如果我写的话，它不起作用：

public void sound1(View view){
            sound1.start();
            sound1.release();
        }

请举个例子。

Answer 1

这应该为你工作。

public class MainActivity extends AppCompatActivity{


    MediaPlayer mediaPlayer;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }


    //sound onClick's 
    public void sound1(View view){
        cleanUpMediaPlayer();
        mediaPlayer = MediaPlayer.create(this, R.raw.sound1);
        mediaPlayer.start();
    }

    public void sound2(View view){
        cleanUpMediaPlayer();
        mediaPlayer = MediaPlayer.create(this, R.raw.sound2);
        mediaPlayer.start();
    }

    public void sound3(View view){
        cleanUpMediaPlayer();
        mediaPlayer = MediaPlayer.create(this, R.raw.sound3);
        mediaPlayer.start();
    }

    public void sound4(View view){
        cleanUpMediaPlayer();
        mediaPlayer = MediaPlayer.create(this, R.raw.sound4);
        mediaPlayer.start();
    }

    public void cleanUpMediaPlayer(){
        if(mediaPlayer != null) {
            if(mediaPlayer.isPlaying()) {
                mediaPlayer.stop();
            }
            mediaPlayer.release();
        }
    }

}

如何在使用后清理MediaPlayer？

1 个答案: