uinavigationcontroller | 易学教程

Where should I set UINavigationController's delegate property?

阅读更多关于 Where should I set UINavigationController's delegate property?

问题 I'm working with some custom controller transitions, which make use of UINavigationController's delegate property. If I set it in viewDidLoad() , self.navigationController?.delegate gets deallocated at some point after the push. Setting it in viewWillAppear() works, but I'm wondering why that property gets deallocated in the first place, and where people typically set this property. // The first time you push, it will work correctly, and the delegate function below is called. After you pop

搭建App主流框架_纯代码搭建(OC)

阅读更多关于搭建App主流框架_纯代码搭建(OC)

转载自：http://my.oschina.net/hejunbinlan/blog/529778?fromerr=EmSuX7PR 搭建主流框架界面源码地址在文章末尾达成效果效果图注：本文部分图标及效果图来自[IT江湖] https://github.com/itjhDev/itjh 导读我们玩iPhone应用的时候，有没发现大部分的应用都是上图差不多的结构，下面的TabBar控制器可以切换子控制器，上面又有Navigation导航条我们本文主要是讨论主体框架的搭建，数据暂时没有添加分析做项目的基本流程 1.搭建项目主框架（1）先搭建tabBarController（下面有一条）（2）再搭建NavigationController（上面有一条，并且每个子控制器的不一样） 2.思考开发方式（1）storyboard搭建（界面很少的时候使用）（2）纯代码搭建（界面超过5个的时候使用，易于管理，商业项目中，一般都使用这种方式）从0开始搭建主流框架（纯代码） 1.准备工作环境部署 Snip20150904_11.png 2.初步搭建基本界面第一步设计目录（根据模块化+MVC思想，创建基本文件目录与文件）模块化思想创建目录路径（一般先在真实路径下创建，再拖到项目中）自定义TabBarController Snip20150904_4.png 第二步上代码

SwiftUI : how to access UINavigationController from NavigationView

阅读更多关于 SwiftUI : how to access UINavigationController from NavigationView

问题 I am developing an app using SwiftUI. The app is based around a NavigationView . I am using a third-part framework that provides UIKit components and the framework has not been updated to support SwiftUI yet. One framework method is expecting a parameter of type UINavigationController How can I supply this framework the NavigationControlle r created by SwiftUI ? Or how can I create a UINavigationController that will replace SwiftUI's default ? I read https://developer.apple.com/tutorials

viewDidLoad called twice, using navigation controller

阅读更多关于 viewDidLoad called twice, using navigation controller

问题 My ViewDidLoad method on a ViewController is called twice, but only in a particular scenario. There are two view controllers which I need to present, one if user isn't logged in and the second if the user is logged in. I am using storyboard and have set a navigation controller as initial view controller in it. In my AppDelegate didFinishLaunchingWithOptions method I have populated ViewControllers array with the desired controller as below let storyboard = UIStoryboard(name: "Main", bundle:

UINavigationController 导航控制器 IOS7适配导航栏不透明

阅读更多关于 UINavigationController 导航控制器 IOS7适配导航栏不透明

导航控制器使用了导航堆栈。根视图控制器(Settings)在堆栈最底层，以此类推。可以理解为一本书，一页一页的。这样就控制了试图控制器 self.title = @"Settings"; // 改变标题 //其实这是一个区域 self.navigationItem.titleView = 这是一个View 那就好办了，我们可以添加button imageView UISegmentedControl选项卡 //视图控制器 ViewController1* vc = [[ViewController1 alloc] init]; //导航控制器 UINavigationController* nc = [[UINavigationController alloc] initWithRootViewController:vc]; self.window.rootViewController = nc; ViewController2* vc2 = [[ViewController2 alloc] init]; //进入第二个页面 [self.navigationController pushViewController:vc2 animated:YES]; //返回上一个页面 [self.navigationController popViewControllerAnimated

获取最顶层的ViewController

阅读更多关于获取最顶层的ViewController

// 获取最顶层的ViewController [self getCurrentVC1]; //获取当前屏幕显示的viewcontroller - (UIViewController *)getCurrentVC1 { UIViewController *rootViewController = [self getViewControllerWindow].rootViewController; UIViewController *currentVC = [self getCurrentVCFrom:rootViewController]; return currentVC; } //获取RootViewController所在的window - (UIWindow*)getViewControllerWindow{ UIWindow *window = [UIApplication sharedApplication].delegate.window; if (window.windowLevel != UIWindowLevelNormal) { NSArray *windows = [UIApplication sharedApplication].windows; for (UIWindow *target in windows) { if (target

How to perform kCATransitionPush animation without any transparency / fade effects [duplicate]

阅读更多关于 How to perform kCATransitionPush animation without any transparency / fade effects [duplicate]

问题 This question already has answers here : Closed 7 years ago . Possible Duplicate: iPhone CATransition adds a fade to the start and end of any animation? I'm trying to duplicate the "slide up from the bottom" animation that [UIViewController presentModalViewController:animated:] performs but without calling it because I don't want a modal view. The below core animation code comes very close but appears to be changing transparency values of the views during it. At the start of the animation you

iOS Swift: How to recreate a Photos App UICollectionView Layout

阅读更多关于 iOS Swift: How to recreate a Photos App UICollectionView Layout

问题 I am wondering for quiet a while now how to create the iOS Photos App layout. How can I make it so it looks like zooming in to a collection while at the same time the navigation bar shows a back button? Is it a new view controller which gets pushed onto a UINavigationController? And if so, how exactly do they manage to match the tiles while expanding. Is there maybe even a 3rd party library which lets me easily recreate such a layout? Hope you can help me to understand the concept of how this

How do I hid the UITabBarView when loading some view?

阅读更多关于 How do I hid the UITabBarView when loading some view?

问题 I'm developing an iPhone app, where I have a UITabBarController that has a UINavigationController for each TabBarItem. I want, after some level of navigation, to hide the TabBar, and to replace it with a full screen view, just like the iPod application, the TabBar hides when you reach the media player, and returns when you get back to the playlist or whatever. Any help or thoughts is highly appreciated 回答1: Set the new viewController's hidesBottomBarWhenPushed: -property. That will hide the

NavigationController Back Skip View

阅读更多关于 NavigationController Back Skip View

问题 First off, I am aware of this question being asked in a forward manner, but in this case I am asking for a backwards manner in which the Navigation Controller is already designed. With that being said... I have a UINavigationController with three views: Table , Get , and Avail in that order that was created in IB. When going forward, I want to go from Table to Get to Avail , but when I hit the "Back" button on Avail I want to skip over Get and go directly back to Table . Is this possible? If