在我的Androidstudio音乐播放器暂停按钮问题

Question

当我按下暂停按钮然后按下播放按钮时，歌曲从暂停位置开始播放。但是当歌曲结束然后按下播放按钮时，歌曲从暂停位置开始播放，而不是从开始播放。

在此处粘贴我的代码

 public void play(View view){
    if(mediaPlayer==null) {

        mediaPlayer = MediaPlayer.create(this, R.raw.ennasona);
        mediaPlayer.start();
    }

    else if (!mediaPlayer.isPlaying()){

        int nowMusicPosition = 0;

        if (nowMusicPosition == mediaPlayer.getDuration()){

            mediaPlayer = MediaPlayer.create(this, R.raw.ennasona);
            mediaPlayer.start();
        }
        else {
            mediaPlayer.seekTo(pauseCurrentPosition);
            mediaPlayer.start();
            nowMusicPosition = mediaPlayer.getCurrentPosition();

        }
    }
}
public void pause(View view){

    if(mediaPlayer!=null) {

        mediaPlayer.pause();

        pauseCurrentPosition = mediaPlayer.getCurrentPosition();

    }
}
public   void stop(View view){

    if (mediaPlayer!=null)

    mediaPlayer.stop();

    mediaPlayer = null;
}

Answer 1

这个条件有问题。

if (nowMusicPosition == mediaPlayer.getCurrentPosition()){

        mediaPlayer = MediaPlayer.create(this, R.raw.ennasona);

    }

这不是在执行。重新检查一下。即使您不需要重新创建媒体播放器实例，也只需使用此

mediaPlayer.start();

完成后从头开始播放。

希望对您有所帮助。

Answer 2

看看 API 我会说你做的太复杂了。您不必记住位置，因为如果您暂停播放，MediaPlayer 应该会记住位置本身。

所以只需使用 play()、pause() 就可以了。不求().

您的代码存在问题：

else if (!mediaPlayer.isPlaying()){
    // this is called nowMusicPosition, down there you've used pauseCurrentPosition
    // this always gets 0, never changes
    int nowMusicPosition = 0;
    if (nowMusicPosition == mediaPlayer.getCurrentPosition()){
         // now you're recreating the MediaPlayer. why?
        mediaPlayer = MediaPlayer.create(this, R.raw.ennasona);
        mediaPlayer.start();
    } else {
        // if video at its end gets stopped, the
        // getCurrentPosition() delivers the last
        // position in the video and you get down
        // here and you're seeking to the paused
        // position again
        mediaPlayer.seekTo(pauseCurrentPosition);
        mediaPlayer.start();
        // now you're setting nowMusicPosition, but it gets 0 again if pressing play again, see above
        nowMusicPosition = mediaPlayer.getCurrentPosition();
    }
}

在我的Androidstudio音乐播放器暂停按钮问题

In my Androidstudio music player pause button problem

java

android-studio-3.0

android-music-player