點擊Button后迅速抬起，Button上的文本不會還原，會保持為“松開結束”。這是為什么呢？

相關代碼片段：

????????@Override
	public?boolean?onTouchEvent(MotionEvent?event)?{
		int?action?=?event.getAction();
		int?x?=?(int)?event.getX();
		int?y?=?(int)?event.getY();
		switch?(action)?{
		case?MotionEvent.ACTION_DOWN:
			setBackgroundResource(R.drawable.recorder_button_recording);
			setText(R.string.button_recording);
			dialogManager.initDialog();
			break;
		case?MotionEvent.ACTION_MOVE:
			if?(currentState?==?STATE_RECORDING)?{
				if?(wantToCancel(x,?y))?{
					changeToState(STATE_CANCEL);
				}
			}?else?if?(currentState?==?STATE_CANCEL)?{
				if?(!wantToCancel(x,?y))?{
					changeToState(STATE_RECORDING);
				}
			}
			break;
		case?MotionEvent.ACTION_UP:
			if(!isLongClicked){
				reset();
				return?super.onTouchEvent(event);
			}
			if(timeLength?<?500){
				handler.sendEmptyMessage(MSG_DIALOG_TOOSHORT);
				audioManager.cancel();
				handler.sendEmptyMessageDelayed(MSG_DIALOG_DIMISS,?1500);
			}
			if?(currentState?==?STATE_RECORDING)?{
				handler.sendEmptyMessage(MSG_DIALOG_DIMISS);
				if(listener?!=?null){
					listener.onFinished(audioManager.getFilePath(),?timeLength);
				}
				audioManager.release();
			}?else?if?(currentState?==?STATE_CANCEL)?{
				handler.sendEmptyMessage(MSG_DIALOG_DIMISS);
				audioManager.cancel();
			}
			reset();
			break;
		}
		return?super.onTouchEvent(event);
	}
	
	private?void?reset()?{
		changeToState(STATE_NORMAL);
		timeLength?=?0;
		isLongClicked?=?false;
	}
	
	private?void?changeToState(int?state)?{
		if?(currentState?!=?state)?{
			switch?(state)?{
			case?STATE_NORMAL:
				currentState?=?STATE_NORMAL;
				setBackgroundResource(R.drawable.recorder_button_normal);
				setText(R.string.button_normal);
				break;
			case?STATE_RECORDING:
				currentState?=?STATE_RECORDING;
				setBackgroundResource(R.drawable.recorder_button_recording);
				setText(R.string.button_recording);
				dialogManager.showDialog(STATE_RECORDING);
				break;
			case?STATE_CANCEL:
				currentState?=?STATE_CANCEL;
				setBackgroundResource(R.drawable.recorder_button_recording);
				setText(R.string.button_cancel);
				dialogManager.showDialog(STATE_CANCEL);
				break;
			}
		}
	}