Swift之手势总结

时间:2022-10-03 12:23:14

手势个人笔记,代码简单,不过多赘述。

建立手势只需三步

  • 建立和设置手势识别器实例,设置target,action,指定一些属性
  • 附加识别器到视图
  • 实现action方法

1、首先还是创建一个view

@IBOutlet var view1: UIView!

2、实现手势绑定

//-----------------------手势---------------------------
/**点击手势*/
func tapGestureDemo() {
//建立手势识别器
let gesture = UITapGestureRecognizer(target: self, action: "viewTap:")
//附加识别器到视图
self.view1.addGestureRecognizer(gesture)
} /**缩放手势*/
func pinchGestureDemo() {
//建立手势识别器
let gesture = UIPinchGestureRecognizer(target: self, action: "viewPinch:")
//附加识别器到视图
self.view1.addGestureRecognizer(gesture)
} /**旋转手势*/
func rotationGestureDemo() {
//建立手势识别器
let gesture = UIRotationGestureRecognizer(target: self, action: "viewRotation:")
//附加识别器到视图
self.view1.addGestureRecognizer(gesture)
} /**滑动手势*/
func swipeGestureDemo() {
//建立手势识别器
let gesture = UISwipeGestureRecognizer(target: self, action: "viewSwipe:")
//附加识别器到视图
self.view1.addGestureRecognizer(gesture)
} /**平移手势*/
func panGestureDemo() {
//建立手势识别器
let gesture = UIPanGestureRecognizer(target: self, action: "viewPan:")
//附加识别器到视图
self.view1.addGestureRecognizer(gesture)
} /**长按手势*/
func LongPressGestureDemo() {
//建立手势识别器
let gesture = UILongPressGestureRecognizer(target: self, action: "viewLongPress:")
//附加识别器到视图
self.view1.addGestureRecognizer(gesture)
} /**自定义手势*/
func custonGestureDemo() {
//建立手势识别器
let gesture = CustomGestureRecognizer(target: self, action: "viewCustom:")
//附加识别器到视图
self.view1.addGestureRecognizer(gesture)
} //-----------------------手势action事件---------------------------
/**点击事件*/
@IBAction func viewTap(sender: UITapGestureRecognizer) {
print("clicked...")
} /**缩放事件*/
func viewPinch(sender: UIPinchGestureRecognizer) {
print("pinch...")
let _width = view1.bounds.width
let _height = view1.bounds.height
view1.bounds.size = CGSize(width: _width * sender.scale, height: _height * sender.scale)
} /**旋转事件*/
func viewRotation(sender: UIRotationGestureRecognizer) {
view1.transform = CGAffineTransformMakeRotation(sender.rotation)
} /**滑动事件*/
var offsetX: CGFloat = 0
func viewSwipe(sender: UISwipeGestureRecognizer) {
if sender.direction == UISwipeGestureRecognizerDirection.Right {
//每次向右平移20
offsetX += 20
view1.transform = CGAffineTransformMakeTranslation(offsetX, 0)
}
} /**平移事件*/
func viewPan(sender: UIPanGestureRecognizer) {
let _transX = sender.translationInView(view1).x
let _transY = sender.translationInView(view1).y view1.transform = CGAffineTransformMakeTranslation(_transX, _transY)
} /**长按事件*/
func viewLongPress(sender: UILongPressGestureRecognizer) {
print("long pressed....")
} func viewCustom(sender: CustomGestureRecognizer) {
print("custom gesture...")
}

3、最后自定义手势,很简单一个例子,可*扩展

  • 新建一个CustomGestureRecognizer自定义手势类,继承自UIGestureRecognizer
  • 切记,引入UIGestureRecognizerSubclass
  • 开始实现类容,下面代码实现从左上角滑动到右下角实例
import UIKit
import UIKit.UIGestureRecognizerSubclass class CustomGestureRecognizer: UIGestureRecognizer {
var leftTop = false
var rightDown = false override init(target: AnyObject?, action: Selector) {
super.init(target: target, action: action)
} override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent) { } override func touchesMoved(touches: Set<UITouch>, withEvent event: UIEvent) {
let myTouch = touches.first! as UITouch
let myLocation = myTouch.locationInView(self.view)
if myLocation.x < 10 && myLocation.y < 10 {
leftTop = true
} if (myLocation.x + 10) > self.view?.bounds.width && (myLocation.y + 10) > self.view?.bounds.height {
rightDown = true
} if leftTop && rightDown {
self.state = UIGestureRecognizerState.Ended
} } override func touchesEnded(touches: Set<UITouch>, withEvent event: UIEvent) {
self.reset()
}
}
文/疯狂的米老鼠(简书作者)
原文链接:http://www.jianshu.com/p/6ef6603d035d
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