IOS手势 UIGestureRecognizer实践(Swift)
2024-04-17 19:54:30
一 Tap轻点
// 双指轻点(需用真机测试)let doubleFingers = UITapGestureRecognizer(target: self, action: #selector(self.doubleTap(_:)))// 点几下才触发，设置1时，就是点一下触发doubleFingers.numberOfTapsRequired = 1// 几个手指触发doubleFingers.numberOfTouchesRequired = 2// 为视图加入监听手势self.view.addGestureRecognizer(doubleFingers)// 单指轻点let singleFingers = UITapGestureRecognizer(target: self, action: #selector(self.singleTap(_:)))// 点几下才触发，设置1时，就是点一下触发singleFingers.numberOfTapsRequired = 2// 几个手指触发singleFingers.numberOfTouchesRequired = 1// 双指轻点没有触发时，才会检测次手势，以免手势被盖过singleFingers.require(toFail: doubleFingers)// 为视图加入监听手势self.view.addGestureRecognizer(singleFingers)
Long Press长按
// 长按
let longPress = UILongPressGestureRecognizer(target: self, action: #selector(ViewController.longPress(_:)))// 为视图加入监听手势self.view.addGestureRecognizer(longPress)
Swipe滑动
/**=======Swipe滑动手势========*/// 可以移动的UIViewmyUIView = UIView(frame: CGRect(x: 0, y: 0, width: 100, height: 100))myUIView.backgroundColor = .blueself.view.addSubview(myUIView)// 向上滑动let swipeLeft = UISwipeGestureRecognizer(target:self, action:#selector(ViewController.swipe(_:)))swipeLeft.direction = .leftself.view.addGestureRecognizer(swipeLeft)// 向下滑动let swipeDown = UISwipeGestureRecognizer(target:self, action:#selector(ViewController.swipe(_:)))swipeDown.direction = .downself.view.addGestureRecognizer(swipeDown)// 向右滑动let swipeRight = UISwipeGestureRecognizer(target:self, action:#selector(ViewController.swipe(_:)))swipeRight.direction = .rightself.view.addGestureRecognizer(swipeRight)
Pan拖拽
// 可以移动的UIView
anotherUIView = UIView(frame: CGRect(x: fullSize.width * 0.5, y: fullSize.height * 0.5, width: 100, height: 100))anotherUIView.backgroundColor = .orangeself.view.addSubview(anotherUIView)// 拖拽手势let pan = UIPanGestureRecognizer(target: self, action: #selector(self.pan(_:)))// 最少用几指拖拽pan.minimumNumberOfTouches = 1// 最多用几指拖拽pan.maximumNumberOfTouches = 1anotherUIView.addGestureRecognizer(pan)
完整代码：
class ViewController: UIViewController {var fullSize = UIScreen.main.bounds.sizevar myUIView: UIView!var anotherUIView: UIView!override func viewDidLoad() {super.viewDidLoad()// Do any additional setup after loading the view./**=======Tap轻点手势========*/// 双指轻点(需用真机测试)let doubleFingers = UITapGestureRecognizer(target: self, action: #selector(self.doubleTap(_:)))// 点几下才触发，设置1时，就是点一下触发doubleFingers.numberOfTapsRequired = 1// 几个手指触发doubleFingers.numberOfTouchesRequired = 2// 为视图加入监听手势self.view.addGestureRecognizer(doubleFingers)// 单指轻点let singleFingers = UITapGestureRecognizer(target: self, action: #selector(self.singleTap(_:)))// 点几下才触发，设置1时，就是点一下触发singleFingers.numberOfTapsRequired = 2// 几个手指触发singleFingers.numberOfTouchesRequired = 1// 双指轻点没有触发时，才会检测次手势，以免手势被盖过singleFingers.require(toFail: doubleFingers)// 为视图加入监听手势self.view.addGestureRecognizer(singleFingers)/**=======Tap长按手势========*/// 长按let longPress = UILongPressGestureRecognizer(target: self, action: #selector(ViewController.longPress(_:)))// 为视图加入监听手势self.view.addGestureRecognizer(longPress)/**=======Swipe滑动手势========*/// 可以移动的UIViewmyUIView = UIView(frame: CGRect(x: 0, y: 0, width: 100, height: 100))myUIView.backgroundColor = .blueself.view.addSubview(myUIView)// 向上滑动let swipeLeft = UISwipeGestureRecognizer(target:self, action:#selector(ViewController.swipe(_:)))swipeLeft.direction = .leftself.view.addGestureRecognizer(swipeLeft)// 向下滑动let swipeDown = UISwipeGestureRecognizer(target:self, action:#selector(ViewController.swipe(_:)))swipeDown.direction = .downself.view.addGestureRecognizer(swipeDown)// 向右滑动let swipeRight = UISwipeGestureRecognizer(target:self, action:#selector(ViewController.swipe(_:)))swipeRight.direction = .rightself.view.addGestureRecognizer(swipeRight)/**=======Pan 拖拽手势========*/// 可以移动的UIViewanotherUIView = UIView(frame: CGRect(x: fullSize.width * 0.5, y: fullSize.height * 0.5, width: 100, height: 100))anotherUIView.backgroundColor = .orangeself.view.addSubview(anotherUIView)// 拖拽手势let pan = UIPanGestureRecognizer(target: self, action: #selector(self.pan(_:)))// 最少用几指拖拽pan.minimumNumberOfTouches = 1// 最多用几指拖拽pan.maximumNumberOfTouches = 1anotherUIView.addGestureRecognizer(pan)}// 触发滑动手势后执行的动作@objc func swipe(_ recognizer:UISwipeGestureRecognizer) {let point = myUIView.centerif recognizer.direction == .up {print("Go up")if point.y >= 150 {myUIView.center = CGPoint(x: myUIView.center.x, y: myUIView.center.y - 100)} else {myUIView.center = CGPoint(x: myUIView.center.x, y: 50)}}else if recognizer.direction == .left {print("Go Left")if point.x >= 150 {myUIView.center = CGPoint(x: myUIView.center.x - 100, y: myUIView.center.y)} else {myUIView.center = CGPoint(x: 50, y: myUIView.center.y)}} else if recognizer.direction == .down {print("Go Down")if point.y <= fullSize.height - 150 {myUIView.center = CGPoint(x: myUIView.center.x, y: myUIView.center.y + 100)} else {myUIView.center = CGPoint(x: myUIView.center.x, y: fullSize.height - 50)}} else if recognizer.direction == .right {print("Go Right")if point.x <= fullSize.width - 150 {myUIView.center = CGPoint(x: myUIView.center.x + 100, y: myUIView.center.y)} else {myUIView.center = CGPoint(x: fullSize.width - 50, y: myUIView.center.y)}}}// 触发双指后执行的动作@objc func doubleTap(_ recognizer:UITapGestureRecognizer){print("双指点一下触发")// 取得每指的位置self.findFingersPositon(recognizer)}// 触发长按后执行的动作@objc func longPress(_ recognizer:UILongPressGestureRecognizer) {if recognizer.state == .began {print("长按开始")} else if recognizer.state == .ended {print("长按结束")}}// 触发单指轻点2下后执行的动作@objc func singleTap(_ recognizer:UITapGestureRecognizer){print("单指轻点2下")// 取得每指的位置self.findFingersPositon(recognizer)}// 触发拖拽后执行的动作@objc func pan(_ recognizer:UIPanGestureRecognizer) {// 设置UIView的新位置let point = recognizer.location(in: self.view)anotherUIView.center = point}func findFingersPositon(_ recognizer: UITapGestureRecognizer) {let number = recognizer.numberOfTouchesfor i in 0..<number {let point = recognizer.location(ofTouch: i, in: recognizer.view)print("第\(i+1)指的位置是：\(NSCoder.string(for: point))")}}}
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