今天遇到个问题，想在didFinishLaunchingWithOptions方法里获取storyBoard的rootViewController。...最后执行didFinishLaunchingWithOptions 由此发现didFinishLaunchingWithOptions之前已经Storyboard已经准备好了，UIApplication的rootViewController...跟踪一下找到了rootViewController ，获取如下： - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions...UITabBarController * tabBar = (UITabBarController *)application.delegate.window.rootViewController
问题描述 笔者在App登录后，切换RootViewController时，发现window上盖着一层看不见的View。如图所示： ? 然后看了window的层级，如图所示： ?...view never removed from window - (void)setRootViewController:(UIViewController *)rootViewController...{ //remove old rootViewController's sub views for (UIView* subView in self.rootViewController.view.subviews...[self.rootViewController.view removeFromSuperview]; //set new rootViewController [super setRootViewController...修改后的代码如下： class MPWindow: UIWindow { override var rootViewController: UIViewController?
rootViewController as?...rootViewController as?...popToRootViewController(animated: false) rootViewController?....rootViewController as?...rootViewController as?
mainScreen].bounds]; self.window.backgroundColor = [UIColor whiteColor]; HomeViewController *rootViewController...]; UINavigationController *rootNavi = [[UINavigationController alloc]initWithRootViewController:rootViewController...]; self.window.rootViewController = rootNavi; [self.window makeKeyAndVisible]; return
1 实现思路 通过最底层的ViewController依次向上寻找，直到找到最顶层的ViewController，也就是从UIApplication的keyWindow的rootViewController...= [UIApplication sharedApplication].keyWindow.rootViewController; UIViewController *currentVC...= [self getCurrentVCFrom:rootViewController]; return currentVC; } - (UIViewController *)getCurrentVCFrom...= [UIApplication sharedApplication].keyWindow.rootViewController; UIViewController *controller = [self...getCurrentVCFrom:rootViewController]; return controller; } //getCurrentVCFrom参考上文两种方法
注意点：rootViewController属性 目前只有UIWindow有rootViewController这个属性，不要跟UINavigationController里面的根视图概念混淆。...比如，为设置rootViewController代码： self.window.rootViewController = customTabBarVC;//AppDelegate.m里面 3)....UINavigationController对象的rootViewController为UIViewController对象。...初始化其rootViewController的方法为： - (instancetype)initWithRootViewController:(UIViewController *)rootViewController...获取keyWindow(它并不一定是当前最上层显示的window)的rootViewController 可以通过如下方法找到当前UIWindow的rootViewController，前提是当keyWindow
self.window = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds]; UIViewController *rootViewController...= [UIViewController new]; // 设置窗口根控制器 rootViewController.view = rootView; self.window.rootViewController...= rootViewController; // 显示主窗口 [self.window makeKeyAndVisible]; return YES; } 加载控件方法
MainViewController; let navi = UINavigationController(rootViewController: mainViewController)...rootViewController = navi; }else{ let loginViewController = UIStoryboard(name: "Main", bundle...rootViewController = loginViewController; } } 如上述例子所示 登陆页面是不受UINavigationController管理，而主页面是受UINavigationController...管理的，只需要在didFinishLaunchingWithOptions方法中设置rootViewController对应的Controller就行了
self.window = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds]; UIViewController *rootViewController...= [UIViewController new]; rootViewController.view = rootView; self.window.rootViewController...= rootViewController; [self.window makeKeyAndVisible];
else { return } //创建window self.window = UIWindow(windowScene: windowScene) //设置window的rootViewController...rootViewController = ViewController() self.window?....-> Bool { //创建window self.window = UIWindow(frame: UIScreen.main.bounds) //设置window的rootViewController...rootViewController = ViewController() self.window?.makeKeyAndVisible() return true } 4.
= Brand_VC() var vc4 = Shoping_VC() var vc5 = Personal_VC() var nvc1:UINavigationController = LBNvc(rootViewController...: vc1) var nvc2:UINavigationController = LBNvc(rootViewController: vc2) var nvc3:UINavigationController...= LBNvc(rootViewController: vc3) var nvc4:UINavigationController = LBNvc(rootViewController: vc4) var...nvc5:UINavigationController = LBNvc(rootViewController: vc5) let tabbar1 = UITabBarItem(title: "首页",
- (void) TEST_HOOK_TWICE { [self changeOrginalSelectorName:@"hookedMethod" inClass:@"RootViewController...swizzle_hookedMethod1" isClassMethod:NO]; [self changeOrginalSelectorName:@"hookedMethod" inClass:@"RootViewController...hook 之前的样子 然后我们执行代码 //第一步：交换A中的方法和系统方法 [self changeOrginalSelectorName:@"hookedMethod" inClass:@"RootViewController...swizzle_hookedMethod1" isClassMethod:NO]; //第二步：交换B中的方法和系统方法 [self changeOrginalSelectorName:@"hookedMethod" inClass:@"RootViewController
rootViewController?....rootViewController?....rootViewController?....rootViewController?....rootViewController?.
rootViewController = mainController; }else{ let loginViewController = UIStoryboard(name: "Main",...LoginViewController; let navi = UINavigationController(rootViewController: loginViewController);...rootViewController = navi; } UINavigationController控制 //push新页面 self.navigationController?.
UIResponder { RootViewController...numberOfSamples: 0 ]; [eaglView setMultipleTouchEnabled:YES]; // Use RootViewController...manage CCEAGLView viewController = [[RootViewController alloc] initWithNibName:nil bundle:nil];
//销毁 root UIWindow *oldWindow=[UIApplication sharedApplication].keyWindow; oldWindow.rootViewController...IPHONE_OS_VERSION_MAX_ALLOWED >= __IPHONE_3_2 UIModalTransitionStylePartialCurl, //类似翻页的卷曲 @param rootViewController... @param newWindow https://github.com/codeRiding...CRProject/Classes/Expand/Tool/CRChangeVC.m */ + (void)restoreRootViewController:(UIViewController *)rootViewController...= rootViewController; [newWindow switchWithRootViewController:rootViewController
sleepForTimeInterval:2.0]; userGuideViewController = [[UserGuideViewController alloc] init]; self.window.rootViewController...sleepForTimeInterval:2.0]; getPicViewController = [[GetPicViewController alloc] init]; self.window.rootViewController
rootViewController = anotherView 然后mainViewController在storyboard里面设置为NavagationViewController的rootviewcontroller
isKindOfClass:[UIViewController class]]) { result = nextResponder; } else { result = window.rootViewController...nextResponder isKindOfClass:[UIViewController class]]) { juheVC = nextResponder; } else { juheVC = window.rootViewController
SceneDelegate.swift中会看到这样的代码： //创建window let window = UIWindow(windowScene: windowScene) //设置window的rootViewController...window.rootViewController = UIHostingController(rootView: ContentView()) self.window = window window.makeKeyAndVisible...() 在设置window的rootViewController时，初始化了ContentView，UI 界面就可以显示出来 这段代码应该很熟悉，在UIKit纯代码构建 iOS 程序中，会经常在 AppDelegate...中写上类似的代码，不同的就是rootViewController为UIHostingController类型的，UIHostingController是UIViewController的子类，主要负责接受一个
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