swift UITapGestureRecognizer 转doubleTap换个视图

Question

在我的 ViewController 中，我有 mapView - 地图。 在map中，如果用户双击，map放大。这是默认选项，我没有设置它。 我添加了 UITapGestureRecognizer，因为我使用的是单击。 但是当我双击时，单击两次。 我不想为双击编写方法，因为 mapView 理解它。 我认为 UITapGestureRecognizer 必须在单击时工作，而在双击时不起作用。 我的代码：

let tapTap = UITapGestureRecognizer(target: self, action: #selector(getObjectProperties))
tapTap.numberOfTapsRequired = 1
tapTap.delegate = self
mapView.addGestureRecognizer(tapTap)

我怎么能

Answer 1

您需要添加require(toFail:)方法。 像这样uiTapGestureRecognizer1.require(toFail:uiTapGestureRecognizer2)

这是上下文中的命令

//DOUBLE TAP
uiTapGestureRecognizer2 = UITapGestureRecognizer(target:self, action:#selector(myDoubleTapGesture(_:)) )
uiTapGestureRecognizer2.numberOfTapsRequired = 2
uiTapGestureRecognizer2.delegate = self
view.addGestureRecognizer(uiTapGestureRecognizer2)

//SINGLE TAP
uiTapGestureRecognizer1 = UITapGestureRecognizer(target:self, action:#selector(mySingleTapGesture(_:)) )
uiTapGestureRecognizer1.numberOfTapsRequired = 1
uiTapGestureRecognizer1.delegate = self
view.addGestureRecognizer(uiTapGestureRecognizer1)

//so the *first* tap of a double doesn't trigger a single
uiTapGestureRecognizer1.require(toFail:uiTapGestureRecognizer2) //<-- this is the line you need