swift pop实现动感按钮动画

//
//  MyButton.swift
//  PopInstall
//
//  Created by su on 15/12/11.
//  Copyright © 2015年 tian. All rights reserved.
//

import UIKit

class MyButton: UIButton {
    override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
        super.touchesBegan(touches, withEvent: event)
        //缩放动画
        var scale = self.pop_animationForKey("scale") as? POPSpringAnimation
        if scale != nil {
            scale?.toValue = NSValue(CGPoint: CGPointMake(0.8, 0.8))
        } else {
            scale = POPSpringAnimation(propertyNamed: kPOPViewScaleXY)
            scale?.toValue = NSValue(CGPoint: CGPointMake(0.8, 0.8))
            scale?.springBounciness = 20
            scale?.springSpeed = 18
            self.pop_addAnimation(scale, forKey: "scale")
        }
       
        //旋转动画  旋转是layer层动画
        var rotate = self.layer.pop_animationForKey("ratate") as? POPSpringAnimation
        if rotate != nil {
            rotate?.toValue = M_PI / 6
           
        } else {
            rotate = POPSpringAnimation(propertyNamed: kPOPLayerRotation)
            rotate?.toValue = M_PI / 6
            rotate?.springBounciness = 20
            rotate?.springSpeed = 18
            self.layer.pop_addAnimation(rotate, forKey: "ratate")

        }

    }

    override func touchesEnded(touches: Set<UITouch>, withEvent event: UIEvent?) {
        super.touchesEnded(touches, withEvent: event)

        //缩放动画

        var scale = self.pop_animationForKey("scale") as? POPSpringAnimation
        if scale != nil {
            scale?.toValue = NSValue(CGPoint: CGPointMake(1, 1))
        } else {
            scale = POPSpringAnimation(propertyNamed: kPOPViewScaleXY)
            scale?.toValue = NSValue(CGPoint: CGPointMake(1, 1))
            scale?.springBounciness = 20
            scale?.springSpeed = 18
            self.pop_addAnimation(scale, forKey: "scale")
        }

        //旋转动画  旋转是layer层动画

        var rotate = self.layer.pop_animationForKey("ratate") as? POPSpringAnimation
        if rotate != nil {
            rotate?.toValue = 0

        } else {

            rotate = POPSpringAnimation(propertyNamed: kPOPLayerRotation)
            rotate?.toValue = 0
            rotate?.springBounciness = 20
            rotate?.springSpeed = 18
            self.layer.pop_addAnimation(rotate, forKey: "ratate")

        }

    }

}