uitabbarcontroller | 易学教程

Tab bar controller inside a navigation controller, how to push new viewcontrollers to the tabcontroller?

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问题 Design requirement: Show a list of items the user can pick from After having picked an item, bring the user to a new view with a back button. The new view should contain a list of tabs at the bottom that are not present in the first screen When clicking an item in the tabs, a new screen should appear with a back button and the tabs should still be visible at the bottom. Clicking a tab should take the user back up the hierarchy to #2. Not to the first screen. I have tried following structure:

UIWebView white screen on every launch while preloading all tabs

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Before I present my issue, I want to mention that I tried looking for solutions here and here . I am creating a hybrid application which uses native UIWebView for rendering the responsive designed web application. Following is the issue description : 1. I have a UITabBarController . 2. Each of the tab has a UIWebView . 3. I have to preload all tabs. 4. I am showing a UIActivityIndicator till the content loads on the first tab. 5. White screen appears for about 8-10 seconds and then the content starts to appear. I will be happy to see this time become 2-4 seconds . Following is my

UITabBarController/UINavigationController rotation issues

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My problem is the following: I want to only allow Portrait orientation on all my ViewControllers except 1 ViewController which is supposed to allow both Portrait and landscapeLeft/Right. I have now spent almost 2 days into how to set orientation in IOS for different slides/ViewControllers. After some searching I found this thread here at stack: UITabBarController Rotation Issues in ios 6 I followed Kunani's example in that thread which I will post here to save all readers some time: Zack, I ran into this same issue. It's because you have your viewController embedded inside of a TabBar

select tableview's row from an another view

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I have made a TabViewController In that there is a view with a table and a view with an Image and some buttons. Now I want that when I press button one of the view one the row one from the another view should be selected. and when I press button two...row two from the another view should be selected .. can anyone tell me logically or with coding how to do this?? Thanks.. If you have a refernce to the second view - use answer by @Praveen. If not, you can use Notifications, like this: In View 'A': [[NSNotificationCenter defaultCenter] postNotificationName:@"selectRow" object:[NSNumber

Autorotation, UIWebView and UITabBarController

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I have the following View hierarchy: UITabBarController | UINavigationController | | | UIViewController (only supports Portrait rotation) | UINavigationController | | | UIViewController (only supports Portrait rotation) | UINavigationController | | | UIViewController (only supports Portrait rotation) | | | UIViewController (has UIWebView with movie in it) | UINavigationController | UIViewController (only supports Portrait rotation) The issue is now that when I display the UIWebView with the movie in it and the user presses "play" the fullscreen media player opens as expected. However, I am not

Programatically switching tabs using selectedViewController property

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问题 I've used search already, haven't found an answer. Trying to switch like this: [self. tabBarController.selectedViewController OptionsViewContorller]; and like this: [self.tabBarController.selectedViewController = self.tabBarController.viewControllers objectAtIndex:3]; but it doesn't work, i also tried and advice to change self.tabBarController.selectedIndex but it only changes at tab bar not a view. 回答1: This should work. self.tabBarController.selectedViewController = [self.tabBarController

MoreNavigationController images disappearing on select

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I have a UITabBarController which has been created programatically, which has 6 tabs. As such the MoreNavigationController is automatically created to take care of having more than 5 tabs. Everything looks fine when the MoreNavigationController is displayed, but when I select one of these rows to push the view controller on to the stack, the cell image (tab bar image) disappears. When I pop that view controller, the image remains hidden until the pop animation is completed, at which point the image suddenly appears again. This is fairly old code and I wouldn't do it this way these days, but

How to add a Tab Bar to an existing view controller, without XIB

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问题 I'm trying to avoid using Interface Builder as much as possible. At the moment I have the view controller created via code and change views via code as well. I now need one of the steps to send the app into a new view with a tab bar , that will allow me to change views as well. Ideally, what I'd do is tell the current view controller to add a Tab Bar to the bottom, but I'm not sure if that's doable, so I might have to swap the UIViewController with a UITabBarController? Any help will be

Reloading UICollectionView causing flickering

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I have subclassed a CollectionView and using it using to display a collection of images in different categories. For example: Most Popular, Most Viewed. I access each category/page through a TabbarController. The classes I have are: Main class - MediaList - Base class for fetching and displaying media in a collection view depending on what type of media is requested. SubClasses - MostPopular and MostViewed are both very light classes that inherit from the main class. The problem is that when I move from MostPopular to MostViewed, the collection view initially displays the last category of

How To Change Tab bar color in Xcode

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问题 How do I go about changing the tab bar color in this code? My tab bar is black. On click changes it to blue. I want to change the tow color to any other color. This code is from :application.m and there :rotatingTabBarController.m ,rotatingTabBarController.h // 1B) If this app uses tabs, create a tabbed navigation application and set the default screen for each tab // to the defaultScreenGuid in the tabs data if([self.tabs count] > 0){ [BT_debugger showIt:self:[NSString stringWithFormat:@