uitabbarcontroller

问题 I am working on tabbar application. When application started, by default first tab is selected. What I want to is when I start application, tab bar should be displayed without selected tab. Like say, if i have 4 tabs then non them get selected when application get launched. By default first one get selected. I want to display some views which are not part of any of tabs. Is it possible to do ? Thanks... 回答1: Yes, this is possible. You need to create a view programmatically and add that view

问题 I create my TabBarController programatically, because I want the same Controller in every tab displaying different content. The content is fetched by an ID . I use the storyboard id the same way as one would use initWithNibName: . I do this in the AppDelegate: - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"MainStoryboard_iPhone" bundle:nil]; UITabBarController

问题 I am loading a UITabBarController inside a UINavigationController . By default the UITabBar for the UITabBarController places it at the bottom of the view. By using the default option the bar is displayed correctly at the bottom position when the app is initiated on landscape. This also makes portrait display correctly at the bottom, (but only when the app is initiated in landscape mode). If I start the app on portrait, it appears to shift downwards the height of the status bar on both

问题 I have four item in tab bar. 1> Watch. (Black Colour) 2> On Demand. (Black Colour) 3> Search. (Black Colour) 4> Settings. (My Colour) How can i change the colour of item text in tab bar to match with its icon colour. (Right now Performance is selected in the tab bar) enter image description here How can I change the color of "1,2,3" text in tabbar to match with its icon color. (Right now Performance is selected in the tab bar) I tried to set TitleTextAttributes. UITabBarItem.appearance()

问题 In my app I should use a several Tab Bar Item with one Controller. To approach this in my Second and Third Tab Bar Item Controllers I use self.tabBarController?.selectedIndex = 0 . As you can see this solution generates blink effect... It's happens every time when I choose Third Tab Bar Item. How to get rid of this blink? Any help is greatly appreciated! 来源： https://stackoverflow.com/questions/39487531/how-to-get-rid-of-blink-between-switching-tab-bar-item

问题 I am having trouble preserving my current views orientation. In the below setup, I have been able to lock the first view controller to portrait and the second viewcontroller to landscape or portrait. However, when I add a second navigation controller/rootviewcontroller to the tab controller, all of the views throughout the project will go to both landscape and portrait. This happens regardless of if I implement the same code in the first navigation controller to the second nav controller or

问题 In iOS, the TabBar property in the TabBarController is read only. How can I associate a custom item with a particular view controller? How do I access the UITabBarItems inside the tabBar? Like this CustomView *custom = [[CustomView alloc] init]; UITabBarItem *customTab = [[UITabBarItem alloc] initWithTitle:@"Custom" image:[UIImage imageNamed:@"custom.png"] tag:0]; SecondView *second = [[SecondView alloc] init]; UITabBarItem *secondTab = [[UITabBarItem alloc] initWithTitle:@"Next" image:

问题 I'm trying to display an UIImageView within a tab on an iPad. I hide the tab bar and I want the UIImageView to take up the entire screen, ie be full screen. I try resizing everything in sight and the image will not occupy the space used by the tab bar. I've tried debugging, printing the frame for each view going up the view hierarchy. Everything looks ok until it gets up to UIViewControllerWrapperView which has the smaller size. What is UIViewControllerWrapperView and how do I resize it? 回答1:

问题 I'm using Monotouch C# to write an iPhone App with a number of different screens. To keep things simple I will describe only a few screens that lead to the controller which I am having issues with. The problem I am having is that I receive this error message when I create a class which inherits from UITabBarController : Application windows are expected to have a root view controller at the end of application launch In my AppDelegate class I initialise a UIViewController and a

问题 I have a TabBar in my project and when user select item this item will disable but the color will change too! I want the color is same as other items color in TabBar I used item.isEnabled = false for disable item but this codes here won't work for this item override func viewWillAppear(_ animated: Bool) { super.viewWillAppear(animated) self.tabBar.barTintColor = UIColor.init(red: 126/255, green: 0/255, blue: 64/255, alpha: 1.0) if #available(iOS 10.0, *) { self.tabBar.unselectedItemTintColor