如何确定imagview中的点击？

Question

我想在运行服务时单击imageview时播放音乐，也要在用户再次单击它时停止音乐 我使用了新的onClickListner，但无法正常工作，请帮帮我吗？ 并且还请帮助我如何将imageview位置设置在屏幕边缘？

任何答案都受到赞赏

public class ViewIMAGE extends Service  {

    private WindowManager windowManager;
    ImageView chatHead;
    WindowManager.LayoutParams params;



    @Override
    public void onCreate() {
        super.onCreate();

        windowManager = (WindowManager) getSystemService(WINDOW_SERVICE);

        chatHead = new ImageView(this);
        chatHead.setImageResource(R.drawable.ic_launcher_foreground);

        chatHead.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                MusicControl.getInstance(ViewIMAGE.this).playMusic();
            }
        });
        params = new WindowManager.LayoutParams(
                WindowManager.LayoutParams.WRAP_CONTENT,
                WindowManager.LayoutParams.WRAP_CONTENT,
                WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY,
                WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE,
                PixelFormat.TRANSLUCENT);

        params.gravity = Gravity.TOP | Gravity.LEFT;
        params.x = 0;
        params.y = 0;

        //this code is for dragging the chat head
        chatHead.setOnTouchListener(new View.OnTouchListener() {
            private int initialX;
            private int initialY;
            private float initialTouchX;
            private float initialTouchY;

            @Override
            public boolean onTouch(View v, MotionEvent event) {
                switch (event.getAction()) {
                    case MotionEvent.ACTION_DOWN:
                        initialX = params.x;
                        initialY = params.y;
                        initialTouchX = event.getRawX();
                        initialTouchY = event.getRawY();
                        return true;
                    case MotionEvent.ACTION_UP:
                        return true;
                    case MotionEvent.ACTION_MOVE:
                        params.x = initialX
                                + (int) (event.getRawX() - initialTouchX);
                        params.y = initialY
                                + (int) (event.getRawY() - initialTouchY);
                        windowManager.updateViewLayout(chatHead, params);
                        return true;
                }
                return false;
            }
        });
        windowManager.addView(chatHead, params);

    }

    @Override
    public void onDestroy() {
        super.onDestroy();
        if (chatHead != null)
            windowManager.removeView(chatHead);
    }

    @Override
    public IBinder onBind(Intent intent) {
        // TODO Auto-generated method stub
        return null;
    }



}

MusicControl.class在这里

public class MusicControl {

    private static MusicControl sInstance;
    private Context mContext;
    private MediaPlayer mMediaPlayer;
    public MusicControl(Context context) {
        mContext = context;
    }

    public static MusicControl getInstance(Context context) {
        if (sInstance == null) {
            sInstance = new MusicControl(context);
        }
        return sInstance;
    }

    public void playMusic() {
        mMediaPlayer = MediaPlayer.create(mContext, R.raw.themesong);
        mMediaPlayer.setLooping(true);
        float maxvolume = (float) 0.25;
        mMediaPlayer.setVolume(maxvolume,maxvolume);
        mMediaPlayer.start();
    }

    public void stopMusic() {
        if(mMediaPlayer != null) {
            mMediaPlayer.stop();
        }
    }
}