Question

我有一个带有两个手势识别器的UIView。两者都用两个手指识别敲击：一个用于屏幕的上半部分，另一个用于屏幕的底部。在那个UIView中，我有4个按钮覆盖整个屏幕（每个按钮是屏幕的四分之一）。

我正在使用手势识别器来检测用户何时同时按下2个按钮，我仍然想要识别按钮上的正常触摸。

我已经设置了所有内容，并且工作正常。但是，只用一根手指按下按钮上的阴影就会出现在Touch Up上，而不会出现在Touch Down上。这感觉很奇怪。我试图改变延迟，但是没有成功。

有没有办法同时拥有这两种行为？用两根手指检测触摸，但只有一根手指时有“正常行为”？否则，我可以强制按下UI按钮的状态吗？

以下是我设置手势的方法：

-(void)initGestureRecognition{
    handClapTapGestureRecognizer = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(handClapDetected:)];
    handClapTapGestureRecognizer.numberOfTouchesRequired = 2;
    handClapTapGestureRecognizer.numberOfTapsRequired = 1;
    handClapTapGestureRecognizer.cancelsTouchesInView = YES;
    [self.gestureRecognitionView addGestureRecognizer:handClapTapGestureRecognizer];
    handClapTapGestureRecognizer.delegate = self;


    jumpTapGestureRecognizer = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(jumpDetected:)];
    jumpTapGestureRecognizer.numberOfTouchesRequired = 2;
    jumpTapGestureRecognizer.numberOfTapsRequired = 1;
    jumpTapGestureRecognizer.cancelsTouchesInView = YES;
    [self.gestureRecognitionView addGestureRecognizer:jumpTapGestureRecognizer];
    jumpTapGestureRecognizer.delegate = self;
}

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer{

    return NO;
}


- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch{
    if ([gestureRecognizer isEqual:handClapTapGestureRecognizer] && [touch locationInView:self.view].y > self.view.frame.size.height/2)
        return NO;
    if ([gestureRecognizer isEqual:jumpTapGestureRecognizer] && [touch locationInView:self.view].y < self.view.frame.size.height/2)
        return NO;

    return YES;
}

我知道我的问题类似于那个问题：UIButton inside a view that has a UITapGestureRecognizer但不同的是，在我的情况下，行为是正常的，而我只是试图在Touch DOwn上的按钮上获得阴影，而不是而不是Touch Up。

由于

Answer 1

首次识别点击手势并且其位置与按钮的位置匹配时，您是否可以手动设置[button setHighlighted:YES]，然后在手势结束时设置为NO？

手势识别器的UIButton子视图

1 个答案: