iOS ChildViewController使用示例
storyboard截图:
ViewController代码:
// // ViewController.swift // TestAddChildViewController // // Created by Fran on 16/2/18. // Copyright © 2016年 kimree. All rights reserved. // import UIKit class ViewController: UIViewController { @IBOutlet weak var scrollMenu: UIScrollView! let colorArray = [UIColor.whiteColor(), UIColor.redColor(), UIColor.grayColor(), UIColor.yellowColor(), UIColor.blueColor()] var buttonVCMapping: [UIButton: UIViewController] = [:] var currentVC: UIViewController! override func viewDidLoad() { super.viewDidLoad() // Do any additional setup after loading the view, typically from a nib. // 如果不加这个 有navigationController的时候 scrollView的contentOffset会自动去变化适应 self.automaticallyAdjustsScrollViewInsets = false scrollMenu.backgroundColor = UIColor.redColor() self.navigationController?.navigationBar.backgroundColor = UIColor.redColor() addScrollMenuButtons() } override func didReceiveMemoryWarning() { super.didReceiveMemoryWarning() // Dispose of any resources that can be recreated. } override func viewDidAppear(animated: Bool) { super.viewDidAppear(animated) } // 添加scrollView上面的button func addScrollMenuButtons(){ // scrollMenu height = 50 已知 for var i = 0; i < 5; i++ { let button = UIButton(type: UIButtonType.Custom) button.setTitle("button\(i)", forState: UIControlState.Normal) button.frame = CGRectMake(CGFloat(i * 100) + 10, 5, 90, 40) scrollMenu.addSubview(button) // 记录button与对应要显示的viewcontroller之间的映射 addButtonVCMapping(button, index: i) // button点击事件 button.addTarget(self, action: "menuButtonClick:", forControlEvents: UIControlEvents.TouchUpInside) } scrollMenu.contentSize = CGSizeMake(CGFloat(5 * 100) + 10, 49) } // button and viewcontroller mapping func addButtonVCMapping(button: UIButton, index: Int){ let vc = UIViewController() vc.view.frame = CGRectMake(0, 64 + 50, UIScreen.mainScreen().bounds.width, UIScreen.mainScreen().bounds.height - 64 - 50) vc.view.backgroundColor = colorArray[index] buttonVCMapping[button] = vc self.addChildViewController(vc) // 设置初始时显示哪一个childViewController if index == 0{ self.view.addSubview(vc.view) currentVC = vc } } // 点击scrollView上的button, 切换对应的childViewController func menuButtonClick(button: UIButton){ let toVC = buttonVCMapping[button] if toVC != nil && toVC != currentVC{ // 切换界面显示的childViewController self.transitionFromViewController(currentVC, toViewController: toVC!, duration: 0.5, options: UIViewAnimationOptions.TransitionCrossDissolve, animations: nil, completion: { (finished: Bool) -> Void in if finished{ toVC!.didMoveToParentViewController(self) self.currentVC.willMoveToParentViewController(nil) self.currentVC = toVC } }) } } }
运行效果如下:
初始,默认使用button0的childViewController
button0
button1
button2
button3
button4