Swift TapGestureRecognizer和UIButton
Swift TapGestureRecognizer和UIButton
提问于 2018-12-20 06:57:05
我是Swift的新手，所以对于任何类型的错误，我都很抱歉。在我的视图控制器中，我有一个视图，CanvasView，我想让用户点击一个按钮，并在点击的地方添加一个形状。我创建了一个名为ShapeSquare的uiview，我有三个具有三种不同形状的按钮。不幸的是，我不知道我错在哪里。这只是代码的一部分。如有任何建议，我们将不胜感激！
@IBOutlet weak var CanvasView: CanvasView!
override func viewDidLoad() {
super.viewDidLoad()
let tapGR = UITapGestureRecognizer(target: self, action: Selector(("didTap")))
tapGR.numberOfTapsRequired = 1
CanvasView.isUserInteractionEnabled = true
CanvasView.addGestureRecognizer(tapGR)
}
func didTap(tapGR: UITapGestureRecognizer) {
let tapPoint = tapGR.location(in: CanvasView)
let shapeView = ShapeSquare(origin: tapPoint)
CanvasView.addSubview(shapeView)
}
@IBAction func SquareShape(_ sender: UIButton) {
CanvasView.setNeedsDisplay()
}回答 1
Stack Overflow用户
发布于 2018-12-20 07:00:30
1-
let tapGR = UITapGestureRecognizer(target: self, action: #selector(didTap(_:)))2-
@objc func didTap(_ tapGR: UITapGestureRecognizer) {页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/53860311
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