Android - 每次单击按钮时从头开始播放相同的声音

Question

我用按钮和声音文件 (mp3) 创建简单的代码，现在，当我按下按钮时，声音文件正在播放，但如果我按下它几次(快速)，它只是在第一次点击时播放，直到 mp3 结束......我希望每次点击播放从一开始的声音。

public class TrafficLightsActivity extends Activity implements OnClickListener {


private ImageButton Upbutton ;
private ImageButton Downbutton ;
private ImageView Image ;

private MediaPlayer mp1 ;
private MediaPlayer mp2 ;


int counter=5 ;



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


    Upbutton = (ImageButton) findViewById (R.id.button1) ;
    Downbutton = (ImageButton) findViewById (R.id.button2) ;
    Image = (ImageView) findViewById(R.id.imageView1) ;

    mp1 = MediaPlayer.create(this, R.raw.nextsound) ;
    mp2 = MediaPlayer.create(this, R.raw.backsound) ;



    Upbutton.setOnClickListener(this) ; 
    Downbutton.setOnClickListener(this) ; }

@Override
    public void onClick(View v) {



        if (Upbutton == v){
            if (mp1.isPlaying()){
                mp1.stop() ;
            }
            counter= counter+1 ;
            System.out.println("Number of clicks is: " + counter) ;
            mp1.start();


        }   }

Answer 1

您可以调用 seekTo(0) 方法，让您从头开始重播声音而无需结束声音:

if (Upbutton == v){
        if(mp1.isPlaying())
            mp1.seekTo(0);
        mp1.start();
    }