uinavigationcontroller

问题 I am importing a file from BOX. I have used box sdk V2. It's importing successfully but as it imports the screen has to navigate on a next controller. I am having crash on this NSArray *arrayOfViews = [[NSBundle mainBundle] loadNibNamed:@"CategoryOptionView" owner:nil options:nil]; and this is the error Assertion failure in void _UIPerformResizeOfTextViewForTextContainer(NSLayoutManager *, UIView *, NSTextContainer *, NSUInteger)(), /SourceCache/UIFoundation_Sim/UIFoundation-229/UIFoundation

问题 I am new to iOS. And I want to use navigation controller in my application but I have no any idea how to do it. So can any one guide me step by step for creating navigation in my application. 回答1: In appDelegate.h @property (strong, nonatomic) UINavigationController *navController; and set the delegate UINavigationControllerDelegate and synthesise object in appDelegate.m now, appDelegate.m you can set navigation controller in didFinishLaunchingWithOptions method - (BOOL)application:

问题 I am using the storyboard for my app which is using UINavigationController . I would like to add a confirmation dialog to the default back button so the user does not log out accidentally. Is there some way to do this? I have found that I cannot simply access the back button when it has be automatically created by the UINavigationController . Any ideas? 回答1: Unfortunately, you can't intercept the back button in this way. The closest facsimile is to use your own UIBarButtonItem set to the

问题 Hey everyone, I am new to iPhone development and I'm not understanding the whole UINavigationController and UITabBarController idea. Is one a substitute for the other - how do apps such as Tweetie combine both? I'd like to have my app have a persistent Tab Bar @ the bottom (which seems to be working), but also a Navigation bar at the top which can push/pop views onto the screen without removing the tab bar. How can I accomplish this? What should the hierarchy look like in IB as far as my

问题 I want to pop to the third view on the navigation stack back to the first view. I know how to pop one view at once: [self.navigationController popViewControllerAnimated:YES]; But how do I do two at once? 回答1: You can try this to Jump between the navigation controller stack as well NSMutableArray *allViewControllers = [NSMutableArray arrayWithArray:[self.navigationController viewControllers]]; for (UIViewController *aViewController in allViewControllers) { if ([aViewController isKindOfClass:

问题 I have a sequence of 4 viewControllers inside a NavigationController, each grabs a few textFields of input from the user which are stored in a NSMutableDictionary. Each of the VC's set's itself up as the delegate of the nextVC before it segues, it also passes the NSMutDict along. This works fine. What I don't understand is this: Say I have filled in the 5 textFields in VC1. Then I set myself as the delegate of VC2, pass VC2 the dictionary with the input data and segue to VC2. In VC2 I fill in

问题 Suppose I have a nav controller stack with 2 view controllers: VC2 is on top and VC1 is underneath. Is there code I can include in VC1 that will detect that VC2 has just been popped off the stack? Since I'm trying to detect the popping of VC2 from within the code for VC1 it seems that something like viewWillAppear or viewDidAppear won't work, because those methods fire every time VC1 is displayed, including when it is first pushed on the stack. EDIT: it seems I was not very clear with my

问题 I have system "NavigationViewController -> MyViewController", and I programmatically want to present MyViewController inside a third view controller. The problem is that I don't have navigation bar in MyViewController after presenting it. Can you help me? var VC1 = self.storyboard.instantiateViewControllerWithIdentifier("MyViewController") as ViewController self.presentViewController(VC1, animated:true, completion: nil) 回答1: Calling presentViewController presents the view controller modally ,

问题 Storyboard iAd Tab Bar Controller sample project 1: Download sample project for Xcode 4.2 2: Make the banner visible above the Tab Bar from every view 3: post answer 4: recieve bounty 5: make other people happy, I will tutorialize it. No place existing tutorial for this important step atm. 回答1: It's fairly simple actually. Just create a new banner view controller for each tab that will be the parent view controller for each tab in your storyboard. Then drag in a Container View object into

问题 I want to push a landscape view from within a uinaviagtioncontroller, whose initial view is in portrait... So you click a button, or tableviewcell, and the screen rotates 90° into the new view.. How would I manage that? This is similar to how the Youtube app works when transitioning from movie info screen to the actual movie. (note: i am not interested in what rotation the user is holding the device) 回答1: What appears in YouTube app when transitioning from the movie info screen to the actual