Question

我正在尝试使用onTouchListener实现音量控制。我做得很好，但问题是音量仅增加了1步。

例如：总音量为100，步长为10、20、30、40 ..依此类推，它只会增加10 –没关系我多次滑动布局-

但是音量降低非常迅速，轻微的触摸-像香蕉一样变得零-

@Override
public boolean onTouch(View v, MotionEvent event) {
    if(event.getAction() == MotionEvent.ACTION_DOWN || event.getAction() == MotionEvent.ACTION_UP)
        Log.i(TAG, "Action :" + event.getAction() + "\t X :" + event.getRawX() + "\t Y :"+ event.getRawY());

    switch (event.getAction()) {
        case MotionEvent.ACTION_DOWN:


            downY = event.getY();

        case MotionEvent.ACTION_UP:

            downY = event.getY();

        case MotionEvent.ACTION_MOVE:


            float y2 = event.getY();

            diffY = (long) (Math.ceil(event.getY() - downY));

            //if (Math.abs(diffY) > Math.abs(diffX)) {

                if (downY < y2) {

                    //down swipe volume decrease
           //         audioManager.adjustVolume(AudioManager.ADJUST_LOWER, AudioManager.FLAG_PLAY_SOUND);
                    audioManager.setStreamVolume(AudioManager.STREAM_MUSIC, AudioManager.ADJUST_LOWER, AudioManager.FLAG_PLAY_SOUND);
                } else if (downY > y2) {

                    //up  swipe volume increase
              //      audioManager.adjustVolume(AudioManager.ADJUST_RAISE, AudioManager.FLAG_PLAY_SOUND);
                    audioManager.setStreamVolume(AudioManager.STREAM_MUSIC, AudioManager.ADJUST_RAISE, AudioManager.FLAG_PLAY_SOUND);
                }
          //  }
       }

    return true;

}

Answer 1

我修复了将setStreamVolume更改为AdjustStreamVolume的问题。

手势音量控制

1 个答案: