uistoryboardsegue

问题 I have problem I've been sitting with. I have a UIViewController List and a UIViewController Login . On Login I have a button "Done", also another hidden button on the same UIViewController that has a segue to List (Type: push). I gave it an identifier in the interface builder of xcode named "LoginToList". Now from another class (a class that runs while Login is the active controller) I call: [[Login sharedLogin] performSegueWithIdentifier:@"LoginToList"]; The Login class clearly has a segue

问题 I have a simple UINavigationController which pushes a UIViewController onto the stack via a custom segue. I then implemented an IBAction on the first UIViewController to perform an unwind action and I implement segueForUnwindingToViewController. Unfortunately, the segueForUnwindingToViewController is not being called (I did confirm that canPerformUnwindSegue is being called on the first VC). I have not seen any simple examples of this behavior. Can anyone please help? Thanks. Here's the code

问题 I was running my iPhone app just fine yesterday. Today I'm getting this crash: *** Terminating app due to uncaught exception 'NSGenericException', reason: 'This coder requires that replaced objects be returned from initWithCoder:' It happens when going from one view to another with storyboard segue (also tried it programmatically). The destination view controller is a UITableViewController with nothing strange. I've rolled back my code to check if anything changed that causes this crash but

问题 I know there are lots of postings about this but I have tried everything and nothing has worked. So I have tried to pass an object between two view controllers, to a DBKIngredientsViewController embedded in a navigation item. I have a push segue with the identifier "showIngredientsSegue" to the DBKIngredientsViewController. The error message I receive is: 'NSInvalidArgumentException', reason: '-[DBKIngredientsViewController topViewController]: unrecognized selector sent to instance 0x8a92450'

问题 In XCode 4.5.1 creating a storyboard app with a Navigation controller, I am having a hard time trying to set the BACK button for any view controllers that are pushed. I'm using segue's and the view controller shows as expected. However I want to change the name of the navigation bar and back button dynamically and placed this in my ViewWillAppear: self.title = @"Select Songs"; [self.backButton setTitle:@"Add"]; changes the title of the navigation bar but the back button still displays the

问题 For an iOS app, I have a story board and multiple controllers, and a segue going from controller GameClass to controller SettingsClass . The segue, in view Controller GameClass has an identifier called GameToSettings : However, when I want to call the segue from my GameClass : [self performSegueWithIdentifier: @"GameToSettings" sender: self]; I get the error message *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'Receiver (<GameClass: 0xcf0c550>) has no

问题 I have created a UIAlertView for an action which gives me 2 options. I want the user to be able to click on a button and have it perform a Segue. Here's the code I have so far: - (IBAction)switchView:(id)sender { UIAlertView *myAlert = [[UIAlertView alloc] initWithTitle:@"Please Note" message:@"Hello this is my message" delegate:self cancelButtonTitle:@"OK" otherButtonTitles:@"Option 1", @"Option 2", nil]; [myAlert show]; } - (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:

问题 In the main view of my app I have a table view and two prototype cells. I have configured the segues for each cell using the storyboard. In the view controller I override prepareForSegue to pass information on the selected cell to the destination view. The destination view isn't particularly complex and certainly doesn't require any heavy processing to load. THE PROBLEM When I tap on a cell in the main controller for the very first time, the destination view appears after a long delay, from 5

问题 I am new to iOS App Development. I have connected a tableview controller such that when I select one of the rows I get another UIViewController using didSelectRowAtIndexPath. I have a container view inside this UIViewController which displays (say for the time being) index of the row on which didSelectRowAtIndexPath was called. I want to do this using a segue, but the problem is I don't know how to get a reference to the view controller which is formed by using the container view. I know you

问题 Ok a lot of variables in the title, sorry I couldn't make it any more simpler. First, I have a custom table cell with descriptions like so now, when a user taps on the cell itself, it would go to View A, however, there is a UITapGestureRecognizer that is connected to the UIImage at the left, which is connected to a segue that goes to View B. All is fine, but I need some data that is inside the table view cell that I can pass to View B so it can do some stuff once the view is shown. override