swift - 动画学习

//
//  ViewController.swift
//  MapAnimation
//
//  Created by su on 15/12/10.
//  Copyright © 2015年 tian. All rights reserved.
//

import UIKit

class ViewController: UIViewController {
   
    var appBackGround:UIImageView!
    var mapView: UIImageView!
    var mapShowing:Bool = false
   
    override func viewDidLoad() {
        super.viewDidLoad()
        self.view.backgroundColor = UIColor.blackColor()
        //构建第一视图
        appBackGround = UIImageView(frame: CGRectMake(0, 64, self.view.frame.size.width,458))
        appBackGround.image = UIImage(named: "app-bg")
        self.view.addSubview(appBackGround)
       
        //构建地图视图
        mapView = UIImageView(frame: CGRectMake(0, 132, self.view.frame.size.width,458))
        mapView.image = UIImage(named: "map-arrow")
        mapView.alpha = 0
        CGAffineTransformScale(mapView.transform, 1.1, 1.1)
        self.view.addSubview(mapView)
       
        //构建执行动画的button
        let right = UIBarButtonItem(image: UIImage(named: "map-icon"), style: UIBarButtonItemStyle.Plain, target: self, action: "right")
        self.navigationItem.rightBarButtonItem = right
       
       
    }
    func right() {
        //显示地图的阻尼值是16 隐藏地图的阻尼值24
        let damplingStiffness:CGFloat = 8.0
        let daplingStiffnessOut:CGFloat = 12
       
        if mapShowing {
            mapShowing = false
            //隐藏地图
            UIView.animateWithDuration(0.1, delay: 0, options: UIViewAnimationOptions.CurveEaseInOut, animations: { () -> Void in
                self.appBackGround.alpha = 1
                }, completion: nil)
           
            let jnw缩放 = JNWSpringAnimation(keyPath: "transform.scale")
            jnw缩放.damping = damplingStiffness
            jnw缩放.stiffness = damplingStiffness
            jnw缩放.mass = 1
            //将尺寸从0.9 还原成1
            jnw缩放.fromValue = 0.9
            jnw缩放.toValue = 1
            appBackGround.layer.addAnimation(jnw缩放, forKey: jnw缩放.keyPath)
            appBackGround.transform = CGAffineTransformScale(CGAffineTransformIdentity, 1.0, 1.0)
           
            //地图视图的动画代码
           
            UIView.animateWithDuration(0.1, delay: 0, options: UIViewAnimationOptions.CurveEaseInOut, animations: { () -> Void in
                self.mapView.alpha = 0
                }, completion: nil)
           
            let jnw地图缩放 = JNWSpringAnimation(keyPath: "transform.scale")
            jnw地图缩放.damping = daplingStiffnessOut
            jnw地图缩放.stiffness = daplingStiffnessOut
            jnw地图缩放.mass = 1
            jnw地图缩放.fromValue = 1.1
            jnw地图缩放.toValue = 1
            self.mapView.layer.addAnimation(jnw地图缩放, forKey: jnw地图缩放.keyPath)
            self.mapView.transform = CGAffineTransformScale(CGAffineTransformIdentity, 1, 1)
            //位移jnw对象
            let jnw地图下移 = JNWSpringAnimation(keyPath: "transform.translation.y")
            jnw地图下移.damping = daplingStiffnessOut
            jnw地图下移.stiffness = daplingStiffnessOut
            jnw地图下移.mass = 1
            jnw地图下移.fromValue = 0
            jnw地图下移.toValue = 30
            self.mapView.layer.addAnimation(jnw地图下移, forKey: jnw地图下移.keyPath)
            self.mapView.transform = CGAffineTransformTranslate(self.mapView.transform, 0, 0)
           
           
        } else {
            //显示地图
            mapShowing = true
            //第一视图的动画代码
            UIView.animateWithDuration(0.1, delay: 0, options: UIViewAnimationOptions.CurveEaseInOut, animations: { () -> Void in
                self.appBackGround.alpha = 0.3
                }, completion: nil)
            let scale = JNWSpringAnimation(keyPath: "transform.scale")
            scale.damping = damplingStiffness
            scale.stiffness = damplingStiffness
            scale.mass = 1
            //初始值取得当前背景的缩放值
            scale.fromValue = 1
            scale.toValue = 0.9
            self.appBackGround.layer.addAnimation(scale, forKey: scale.keyPath)
            self.appBackGround.transform = CGAffineTransformScale(CGAffineTransformIdentity, 0.9, 0.9)
 
           
            //地图动画代码
            UIView.animateWithDuration(0.1, delay: 0, options: UIViewAnimationOptions.CurveEaseInOut, animations: { () -> Void in
                self.mapView.alpha = 1
                }, completion: nil)
            //利用jnw框架组合两个动画
            let mapScale = JNWSpringAnimation(keyPath: "transform.scale")
            mapScale.damping = daplingStiffnessOut
            mapScale.stiffness = daplingStiffnessOut
            mapScale.mass = 1
            mapScale.fromValue = 1
            mapScale.toValue = 1.1
            self.mapView.layer.addAnimation(mapScale, forKey: mapScale.keyPath)
            self.mapView.transform = CGAffineTransformScale(CGAffineTransformIdentity, 1.1, 1.1)
            //位移动画
            let mapTranslate = JNWSpringAnimation(keyPath: "transform.translation.y")
            mapTranslate.damping = daplingStiffnessOut
            mapTranslate.stiffness = daplingStiffnessOut
            mapTranslate.mass = 1
            mapTranslate.fromValue = 30
            mapTranslate.toValue = 0
            self.mapView.layer.addAnimation(mapTranslate, forKey: mapTranslate.keyPath)
            self.mapView.transform = CGAffineTransformTranslate(self.mapView.transform, 0, 0)
           
           
        }
    }

override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

}