主要用到包含结束方法的动画方法
UIView.animateWithDuration(duration,animations: { },completion: { finished in })
手动拖入一个button控件
//
// ViewController.swift
// ChangeView
//
// Created by lifubing on 15/3/18.
// Copyright (c) 2015年 lifubing. All rights reserved.
//
import UIKit
class ViewController: UIViewController {
@IBAction func but(sender: UIButton) {
changeOrder()
}
var flag = 0//flag作为一个标志,切换view时作为判断
var viewA = UIView(frame: CGRect(x: 75,y: 150,width: 100,height: 100))//手动创建View,也可以拖控件
var viewB = UIView(frame: CGRect(x: 75,y: 175,width: 50,height: 50))
override func viewDidLoad() {
super.viewDidLoad()
viewA.backgroundColor = UIColor.blueColor()
viewA.alpha = 0.8
self.view.addSubview(viewA)
viewB.backgroundColor = UIColor.redColor()
self.view.addSubview(viewB)
// Do any additional setup after loading the view,typically from a nib.
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func changeOrder() {
if flag == 0 {//判断是不是第一次切换
UIView.animateWithDuration(1.5,animations: {
self.viewB.center = CGPointMake(self.viewB.center.x + 100,self.viewB.center.y)
},completion: {
(Bool finished) in
self.view.bringSubviewToFront(self.viewA)
UIView.animateWithDuration(1.5,animations: {
self.viewB.center = CGPointMake(self.viewB.center.x - 100,self.viewB.center.y)
})
})
flag = 1//改变标志的值
} else {
UIView.animateWithDuration(1.5,completion: {
(Bool finished) in
self.view.bringSubviewToFront(self.viewB)
UIView.animateWithDuration(1.5,self.viewB.center.y)
})
})
flag = 0//恢复标志的值
}
}
}
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