uiviewcontroller

问题 In a tab bar application, I'm adding a view to my first tabbar view by doing: [self.view addSubview:anotherView.view]; Once anotherView is done, I do: [self.view removeFromSuperview]; Which goes back to the parent but doesn't fire viewDidAppear or viewWillAppear on the parent. I can use messaging but it seems there must be a better way. Any suggestions? 回答1: When you add a subview to the first view, it's still visible, just behind the second view. Those methods don't fire because technically

问题 I have one single MainViewController which has of course it's one main UIView. I have this main view comprised of many different subviews. Some of these subviews have their very own ViewController. Lets say the MAIN view (whose delegate is primarily MainViewController) has a container which loads another UIView that uses a separate UIViewController- SecondaryViewController as the delegate for most it's actions. This container view is of course loaded in MainViewController via

问题 I am having trouble navigating my application. I have written a game scene completely in Sprite Kit (all buttons, etc. using SKNodes) with Objective-C. When the user opens the app, it presents a main menu which is built completely in Storyboard and contains a UIButton that triggers a transition to the ViewController with my game scene in it. Originally, to restart the game once the user lost I just presented a new scene like this: GameScene *newScene = [GameScene sceneWithSize:self.view

问题 I am having some trouble with dismissing a collection of UIViewController objects. I do not know of an elegant way to dismiss all loaded modal UIViewController objects at once. I make use of the "storyboard" in Xcode 4, but I do not use Segues to map the screens. I use dynamic code, like so: It all starts in MainViewController.m. I load [myMenuController] (a menu list). When the user selects an option from the menu, it then loads [myTicketController]. After some user interaction there, it

问题 I am working with a TabBarController >> NavBarController UI. One of my UIViewControllers has a UIScrollView in it with some text (UITextField) in it. Problem is, the uppermost text in the UIScrollView is covered by the NavBar. How do I fix this? I am trying to manually adjust stuff in IB with mixed results but I want a more CERTAIN solution. 回答1: The problem is that your view is too big, and it's being positioned under the nav bar. To fix, open up the .xib with your container view and/or your

问题 I have a CalendarView and I've passed the object to another UIView with a tableView in it. In my CalendarView: anotherView *anotherViewController = [[anotherView alloc] init]; NSDateFormatter *formatter = [[NSDateFormatter alloc] init]; [formatter setDateFormat:@"dd-MM-yyyy"]; NSString *dateString = [formatter stringFromDate:aDateObject]; anotherViewController.eventDate = aDateObject; anotherViewController.eventDateTitle = dateString; [formatter release]; [anotherViewController release]; I

问题 I have lost a lot of time with this weird error/bug. I have 2 ViewControllers with navigationController and I move from the first to the second with pushViewController. But when I push second viewController, it shows up and also backButton on the navigation bar shows up. But this button disappear in a very short time (about half a second). Title of the first viewC is ok and it`s also on the back button (I can catch it in the time it is shown up). Does anyone have a tip where could be the

问题 I present modal view controllers, packaged in a UINavigationController. When they first appear, the bar button items are alright. However, if I click a button and a new view controller is pushed to the UINavigationController, and then I use the back button of that view controller, and it gets popped back to the original modal view controller , the buttons do not show up , (but they work when I click them -> just can't see them) I can't seem to figure out why this occurs. Here's some code. Oh,

问题 In my app there are two view controllers. I wrote touchesmoved method in both the view controllers. But even if i touch on second view controller on simulator, the first VC touches moved method is called. // for VCOne -(void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event { NSLog(@"first view vc move method"); UIStoryboard *storyboard = self.storyboard; ThreadedView *secViewController = [storyboard instantiateViewControllerWithIdentifier:@"threaded"]; [self.view addSubview

问题 I'm trying to make a view controller that will always load the same nib. My initialization code looks like this: -(id)init { NSString* nibName; if(UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) nibName = @"XIB_iPad"; else nibName = @"XIB_iPhone"; self = [super initWithNibName:nibName bundle:nil]; if (self) { ... } return self; } - (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil { return [self init]; } The problem is that this code results in the view