Swift手势使用

本文介绍一些常使用的iOS手势，基本上可以满足项目需求。

手势.gif

单机手势

let guesture = UITapGestureRecognizer(target: self, action: #selector(singleTap(_:)))

view.addGestureRecognizer(guesture)

func singleTap(_ tapGesture: UITapGestureRecognizer) {

}

双击手势

let doubleGuesture = UITapGestureRecognizer(target: self, action: #selector(doubleTap(_:)))

doubleGuesture.numberOfTapsRequired = 2// 点击次数

doubleGuesture.numberOfTouchesRequired = 1// 手指个数

view.addGestureRecognizer(doubleGuesture)

func doubleTap(_ tapGesture: UITapGestureRecognizer) {

}

长按手势

let longGuesture = UILongPressGestureRecognizer(target: self, action: #selector(longPress(_:)))

view.addGestureRecognizer(longGuesture)

func longPress(_ longPressGesture: UILongPressGestureRecognizer){

}

滑动手势

left：向左滑动，right：向右滑动，up：向上滑动，down：向下滑动，

let leftSwipeGesture = UISwipeGestureRecognizer(target: self, action: #selector(swipeGesture(_:)))

leftSwipeGesture.direction= .left

view.addGestureRecognizer(leftSwipeGesture)

func swipeGesture(_ swipeGesture: UISwipeGestureRecognizer) {

switch swipeGesture.direction {

  case.left, .right, .up, .down:

  print("SwipeGesture")

}}

捏合手势

let pinch = UIPinchGestureRecognizer(target: self, action: #selector(pinchGesture(_:)))

view.addGestureRecognizer(pinch)

func pinchGesture(_ pinchGesture: UIPinchGestureRecognizer) {

  print(pinchGesture.scale)// 捏合比例

  print(pinchGesture.velocity)// 捏合速度

}

旋转手势

let rotation = UIRotationGestureRecognizer(target: self, action: #selector(rotationGesture(_:)))

view.addGestureRecognizer(rotation)

func rotationGesture(_ rotationGesture: UIRotationGestureRecognizer) {

print(rotationGesture.rotation*(180/(CGFloat(Double.pi))))// 旋转的角度

}

拖动手势

@IBOutlet weak var panGestureView: UIView!

let pan = UIPanGestureRecognizer(target: self, action: #selector(panGesture(_:)))

pan.maximumNumberOfTouches=1// 一个手指拖动

panGestureView.addGestureRecognizer(pan)

func panGesture(_ panGesture: UIPanGestureRecognizer) {

let point = panGesture.location(in: panGesture.view?.superview)

panGestureView.center= point

}