UIViewController－Swift

UIViewController类详解：

通过Nib文件初始化

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1. init(nibName nibName: String?, bundle nibBundle: NSBundle?)
2. println("nibName = \(self.nibName)")                                    //nibName
3. println("nibBundle = \(self.nibBundle)")                                //nibBundle

StoryBoard相关

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1. println("storyboard = \(self.storyboard)")                              //storyboard<pre name="code" class="objc">//在跳转之前对Segue进行判断,如果返回false则不之行这个Segue的跳转, performSegueWithIdentifier:sender:如果使用了,则这个方法无效
2. override func shouldPerformSegueWithIdentifier(identifier: String?, sender: AnyObject?) -> Bool {
3. return true
4. }
5. //跳转执行
6. override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
7. print("prepareForSegue")
8. }
9. //根据UIStoryBoarSegue的Identifier进行跳转
10. override func performSegueWithIdentifier(identifier: String?, sender: AnyObject?) {
11. super.performSegueWithIdentifier(identifier!, sender: sender)
12. }

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1. //subViewController是否能够执行Unwind Segue
2. override func canPerformUnwindSegueAction(action: Selector, fromViewController: UIViewController, withSender sender: AnyObject) -> Bool {
3. }

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1. //如果执行Unwind Segue，就返回Segue
2. override func segueForUnwindingToViewController(toViewController: UIViewController, fromViewController: UIViewController, identifier: String?) -> UIStoryboardSegue {
3. }

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1. //能够执行Segue的Controller
2. func viewControllerForUnwindSegueAction(action: Selector, fromViewController: UIViewController, withSender sender: AnyObject?) -> UIViewController? {
3. }

Unwindsegue的实现原理请参考相关文章

View相关

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1. println("view = \(view)")
2. println("view is loaded = \(isViewLoaded())")
3. title = "ViewController"<pre name="code" class="objc">//如果不是nib文件初始化而来，初始化的时候需要调用这个方法初始化view,此方法不能主动调用,是系统调用的<pre name="code" class="objc">override func loadView() {
4. super.loadView()<pre name="code" class="objc">}//view初始化以后调用

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1. override func viewDidLoad() {

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1. super.viewDidLoad()   <span style="font-family: Arial, Helvetica, sans-serif;">//view将可见的时候调用</span>
2. } <pre name="code" class="objc">override func viewWillAppear(animated: Bool) {
3. super.viewWillAppear(animated)
4. }
5. // view变得完全可见了以后执行
6. override func viewDidAppear(animated: Bool) {
7. super.viewDidAppear(animated)
8. }
9. //view被遮挡或者隐藏时调用
10. override func viewWillDisappear(animated: Bool) {
11. super.viewWillDisappear(animated)
12. }
13. //view被遮挡或者隐藏后调用
14. override func viewDidDisappear(animated: Bool) {
15. super.viewDidDisappear(animated)
16. }

模式跳转

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1. //设置模式跳转的类别,但是必须是目的Controller设置,不能是上级设置
2. //CoverVertical, FlipHorizontal, CrossDissolve, PartialCurl四种类型
3. viewController.modalTransitionStyle = .FlipHorizontal
4. //设置模式展示样式,适合于iPad上
5. viewController.modalPresentationStyle = .FullScreen
6. //如果展示不是.FullScreen, 那么设置是不是捕获statusBar的样式,适合iPad
7. viewController.modalPresentationCapturesStatusBarAppearance = true
8. //判断在模式跳转时消失是否键盘
9. viewController.disablesAutomaticKeyboardDismissal()
10. presentViewController(viewController, animated: true) { () -> Void in
11. //跳转到下个界面
12. }
13. dismissViewControllerAnimated(true , completion: { () -> Void in
14. //回复模式跳转
15. })

配置View的layout

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1. // layoutSubviews方法调用之前
2. override func viewWillLayoutSubviews() {
3. super.viewWillLayoutSubviews()
4. }
5. // layoutSubviews方法调用之后
6. override func viewDidLayoutSubviews() {
7. super.viewDidLayoutSubviews()
8. }<pre name="code" class="objc">

updateViewConstraints()

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1. //延伸的方向--set which sides of your view can be extended to cover the whole screen.
2. if self.respondsToSelector(Selector("edgesForExtendedLayout")) {
3. self.edgesForExtendedLayout = .None
4. }
5. //Scrollview滚动时处于全屏,默认YES
6. if self.respondsToSelector(Selector("automaticallyAdjustsScrollViewInsets")) {
7. self.automaticallyAdjustsScrollViewInsets = true
8. }
9. //当statusbar是透明时，是否扩展至StatusBar，默认情况下是NO，且statusbar不是透明的
10. if self.respondsToSelector(Selector("extendedLayoutIncludesOpaqueBars")) {
11. self.extendedLayoutIncludesOpaqueBars = false
12. }
13. //控制view的大小UIPopoverController用的比较的广泛
14. self.preferredContentSize = self.view.bounds.size

跳转相关

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1. isBeingPresented()                                                      //是否在展示
2. isBeingDismissed()                                                      //是否在dismiss
3. isMovingToParentViewController()
4. isMovingFromParentViewController()

旋转相关

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1. //是否需要旋转
2. override func shouldAutorotate() -> Bool {
3. return true
4. }
5. //支持的方向
6. override func supportedInterfaceOrientations() -> Int {
7. return 2
8. }
9. //优先支持的方向
10. override func preferredInterfaceOrientationForPresentation() -> UIInterfaceOrientation {
11. return .Portrait
12. }

自定义的ViewController Container

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1. //https://developer.apple.com/library/ios/featuredarticles/ViewControllerPGforiPhoneOS/CreatingCustomContainerViewControllers/CreatingCustomContainerViewControllers.html
2. //addChildVIewController:调用这个方法指明一个视图控制器作为你的子视图。
3. func addChildViewController(childController: UIViewController) {
4. }
5. //调用这个方法将一个视图控制器从你的子视图列表里移除。
6. func removeFromParentViewController() {
7. }
8. //这是一个使用一个唯一可选的视图替换另一个视图的新方法,或者移动一个子视图到前台来。通过使用这个方法,这个视图控制器的生命周期信息会被正确地发送出去        func transitionFromViewController(fromViewController: UIViewController, toViewController: UIViewController, duration: NSTimeInterval, options: UIViewAnimationOptions, animations: () -> Void, completion: ((Bool) -> Void)?) {
9. }
10. //将要移到父Controller
11. func willMoveToParentViewController(parent: UIViewController?) {
12. }
13. //已经移到父Controller
14. func didMoveToParentViewController(parent: UIViewController?) {
15. }
16. //触发子ViewController的viewWillAppear
17. func beginAppearanceTransition(isAppearing: Bool, animated: Bool) {
18. }
19. //触发childd的viewDidAppear这些方法
20. func endAppearanceTransition() {
21. }
22. //child ViewController的作为状态栏
23. func childViewControllerForStatusBarStyle() -> UIViewController? {
24. return nil;
25. }
26. //child ViewController的状态栏是否隐藏设置状态栏
27. func childViewControllerForStatusBarHidden() -> UIViewController? {
28. return nil;
29. }

恢复相关

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1. restorationIdentifier 恢复标示
2. restorationClass      恢复的类
3. override func encodeRestorableStateWithCoder(coder: NSCoder) {
4. }
5. override func decodeRestorableStateWithCoder(coder: NSCoder) {
6. }
7. applicationFinishedRestoringState() 恢复完成

获得其他的ViewController

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1. println("parentViewController=\(self.parentViewController)")            //父类Controller
2. println("presentedViewController=\(self.presentedViewController)")      //Controller模式跳转到去Controller或父容器
3. println("presentingViewController=\(self.presentingViewController)")    //Controller模式跳转来自于Controller或父容器
4. //        self.navigationController
5. //        self.tabBarController
6. //        self.presentationController
7. //        self.splitViewController
8. //        self.popoverPresentationController

StatusBar相关

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1. //如果展示不是.FullScreen, 那么设置是不是捕获statusBar的样式,适合iPad
2. viewController.modalPresentationCapturesStatusBarAppearance = true
3. //child ViewController的作为状态栏
4. func childViewControllerForStatusBarStyle() -> UIViewController? {
5. return nil;
6. }
7. //child ViewController的状态栏是否隐藏设置状态栏
8. func childViewControllerForStatusBarHidden() -> UIViewController? {
9. return nil;
10. }
11. //设置当前ViewController的StatusBar的样式
12. override func preferredStatusBarStyle() -> UIStatusBarStyle {
13. return .Default
14. }
15. //隐藏还是展示statusBar
16. override func prefersStatusBarHidden() -> Bool {
17. return true
18. }
19. //statusBar的改变动画
20. override func preferredStatusBarUpdateAnimation() -> UIStatusBarAnimation {
21. return .Fade
22. }
23. //当statusBar的状态改变后需要调用刷新
24. //    setNeedsStatusBarAppearanceUpdate()

Navigation相关

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1. override func setToolbarItems(toolbarItems: [AnyObject]?, animated: Bool) {
2. }
3. self.navigationItem
4. self.editButtonItem()
5. hidesBottomBarWhenPushed = true
6. self.toolbarItems = nil

TabBar相关

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1. self.toolbarItems

常量

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1. UIModalTransitionStyle
2. Modal Presentation Styles
3. UIViewControllerHierarchyInconsistencyException
4. UIViewControllerShowDetailTargetDidChangeNotification