uitabbarcontroller

问题 I have a UITabBarController with three tab bar items. The tab bar items has view controllers of the type UINavigationController . Each navigation controller has UIViewController as the top view controller. Each view controller on the top of the navigation controller stack has its own flow. When the user swipes at the edge of the screen to trigger interactivePopGestureRecognizer , and upon the popping out the view controller from the stack, the tab bar items becomes not interact-able. Any idea

问题 I have a UITabBarController with three tab bar items. The tab bar items has view controllers of the type UINavigationController . Each navigation controller has UIViewController as the top view controller. Each view controller on the top of the navigation controller stack has its own flow. When the user swipes at the edge of the screen to trigger interactivePopGestureRecognizer , and upon the popping out the view controller from the stack, the tab bar items becomes not interact-able. Any idea

问题 I have used Storyboard to set up my UITabBarController and its corresponding ViewControllers . Whenever a tab is deselected, it is gray, when it is selected it has a green tint. I would like one of these UITabBarItems to always look the same: i.e. it always has the green tint regardless of whether it is selected or deselected. In addition, the icon image I am using for this UITabBarItem already has the green look that I want. This is important because I have tried using this method in the

问题 I have created 5 Tabs in my application. In Tab1 i have UITableView . On didSelectRowAtIndexPath i am navigating to another UIView in which I am showing my all 5 Tabs. And I also play song in that navigated view. Now when I click Back button in navigation and i again go to my original view, i am able to call viewWillDisappear (as expected and normal situation). But when I click directly another tab then viewWillDisappear is not called in the navigated View. Why this Happens?? I have just

问题 My application uses locations data and presents it both as a table and in a map. It starts with a Tab Bar Controller, each of it's views is a Navigation Controller (one for the table view, one for the map, etc...). I want to share a UIManagedObject in order to use the same Managed Object Context so if the user updates at the table view, the data also gets updated for the map, so there is no need to update twice. Originally i thought of subclassing the Tab Bar Controller and adding a

问题 I really can't figure this out. When I click a link to open Safari from within my app, browse through the webpage, then return to my app, I can open and browse two tabBarItems in my UITabBar . But, when I try to select the one atIndex: 0 , I get an EXEC_BAD_ACCESS and the following :(. Can anyone help me figure out how to make this not happen? I currently don't have any code that executes in will or didEnterBackground or Foreground . None. So the problem must be in the UIViewController for

问题 I really can't figure this out. When I click a link to open Safari from within my app, browse through the webpage, then return to my app, I can open and browse two tabBarItems in my UITabBar . But, when I try to select the one atIndex: 0 , I get an EXEC_BAD_ACCESS and the following :(. Can anyone help me figure out how to make this not happen? I currently don't have any code that executes in will or didEnterBackground or Foreground . None. So the problem must be in the UIViewController for

问题 I've been trying to add a gradient to the UITabBar in my app. After a few failed attempts I followed the steps from this question and the. gradient now works, but the UITabBarItems are invisible (although they all work). How can I make sure that both the gradient and the UIITabBarItems are visible? class GradientTabBarController: UITabBarController { let layerGradient = CAGradientLayer() override func viewDidLoad() { super.viewDidLoad() print("custom tabbar loaded") layerGradient.colors =

问题 I have an UITabBarController which presents in one tab a table of chats. If the user clicks on one row, a view controller will be displayed that presents the latest messages. Now I am introducing Push notifications. The desired behavior would be to automatically go to the chat room if the user opens up the Push notification. Although there's plenty information available on how to handle these use cases, I do not succeed in implementing it. Here's my code so far: func application(_ application

问题 i have the following situation: I got a TabBarController with some tabs(ViewControllers). When i am in one of these ViewControllers, i tap a button and i want to segue to a NavigationController AND still see the tabbar... Here is what i did: I created a new ViewController(DetailViewController) I embedded this new ViewController(DetailViewController) in a NavigationController I created a segue(Show) from the "viewcontroller which is embedded in the tabbarcontroller" to the "new