android播放器，点击暂停，又点暂停按钮可以继续播放，要是点播放按钮从头播放了

public void mediaplay(View v) {        switch (v.getId()) {        case R.id.playbutton:            String filename = filenames.toString();            File file = new File(Environment.getExternalStorageDirectory(),                    filename);            if (file.exists()) {                path = pathload;                play(0);            } else {                path = null;                Toast.makeText(this, R.string.filenoexsit, 1).show();            }            break;        case R.id.pausebutton:            if (mediaPlayer.isPlaying()) {                mediaPlayer.pause();                pause = true;            } else {                if (pause) {                    mediaPlayer.start();                    pause = false;                }            }            break;        case R.id.resetbutton:            if (mediaPlayer.isPlaying()) {                mediaPlayer.seekTo(0);            } else {                if (path != null) {                    play(0);                }            }            break;        case R.id.stopbutton:            if (mediaPlayer.isPlaying()) {                mediaPlayer.stop();            }            break;        }    }    private void play(int position) {        try {            mediaPlayer.reset();            mediaPlayer.setDataSource(path);            mediaPlayer.setDisplay(surfaceView.getHolder());            mediaPlayer.prepare();// 缓冲            mediaPlayer.setOnPreparedListener(new PrepareListener(position));        } catch (Exception e) {            e.printStackTrace();        }    }    private final class PrepareListener implements OnPreparedListener {        private int position;        public PrepareListener(int position) {            this.position = position;        }        public void onPrepared(MediaPlayer mp) {            mediaPlayer.start();// 播放视频            if (position > 0)                mediaPlayer.seekTo(position);        }    }

case R.id.playbutton:if (pause && mediaPlayer!=null){mediaPlayer.start();pause = false;}else{String filename = filenames.toString();            File file = new File(Environment.getExternalStorageDirectory(),                    filename);            if (file.exists()) {                path = pathload;                play(0);            } else {                path = null;                Toast.makeText(this, R.string.filenoexsit, 1).show();            }}break;
------解决方案--------------------
点击播放的时候，先判断一下当前音乐的播放状态：

如果是停止状态：从头播放即可
如果是暂停状态：直接start()就行了
如果是播放状态：应该是不让点击的

一般暂停、播放是用一个按钮控制的，只需要换不同的背景图片就可以了，
看楼主的描述，应该是将播放、暂停分开处理的吧，这样在逻辑处理上会麻烦许多