iOS - 多次点击手势识别器

Question

在我的应用程序中，我必须检测单击、双击和三次点击。所以，我正在使用 UITapGestureRecognizer。我正在使用以下代码:

    UITapGestureRecognizer *oneTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleSingleTapGestureOnAnimal:)];
    oneTap.numberOfTapsRequired = 1;

    UITapGestureRecognizer *doubleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleDoubleTapGestureOnAnimal:)];
    doubleTap.numberOfTapsRequired = 2;
    [doubleTap requireGestureRecognizerToFail:oneTap];

    UITapGestureRecognizer* tripleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleTripleTapGestureOnAnimal:)];
    tripleTap.numberOfTapsRequired = 3;
    [tripleTap requireGestureRecognizerToFail:doubleTap];

    [self addGestureRecognizer:oneTap];
    [self addGestureRecognizer:doubleTap];
    [self addGestureRecognizer:tripleTap];

但问题是它总是只检测单击和双击。它根本没有检测到三次点击....有人可以指出我在检测三次点击时犯的错误吗？

Answer 1

检查一下，

[oneTap requireGestureRecognizerToFail:doubleTap];
[oneTap requireGestureRecognizerToFail:tripleTap];
[doubleTap requireGestureRecognizerToFail:tripleTap];

您已经在方法中切换了水龙头，但您没有执行上面的第二行。理想情况下，只有在双击和三次点击失败时才应检测到一次点击。并且在三次点击失败时应该检测到双击。