How to check if a view controller can perform a segue

To check whether the segue existed or not, I simply surrounded the call with a try-and-catch block. Please see the code example below:

@try {    [self performSegueWithIdentifier:[dictionary valueForKey:@"segue"] sender:self];}@catch (NSException *exception) {    NSLog(@"Segue not found: %@", exception);}

Hope this helps.

- (BOOL)canPerformSegueWithIdentifier:(NSString *)identifier{    NSArray *segueTemplates = [self valueForKey:@"storyboardSegueTemplates"];    NSArray *filteredArray = [segueTemplates filteredArrayUsingPredicate:[NSPredicate predicateWithFormat:@"identifier = %@", identifier]];    return filteredArray.count>0;}

_{This post has been updated for Swift 4.}

Here is a more correct Swift way to check if a segue exists:

extension UIViewController {func canPerformSegue(withIdentifier id: String) -> Bool {        guard let segues = self.value(forKey: "storyboardSegueTemplates") as? [NSObject] else { return false }        return segues.first { $0.value(forKey: "identifier") as? String == id } != nil    }    /// Performs segue with passed identifier, if self can perform it.    func performSegueIfPossible(id: String?, sender: AnyObject? = nil) {        guard let id = id, canPerformSegue(withIdentifier: id) else { return }        self.performSegue(withIdentifier: id, sender: sender)    }}// 1if canPerformSegue("test") {    performSegueIfPossible(id: "test") // or with sender: , sender: ...)}// 2performSegueIfPossible(id: "test") // or with sender: , sender: ...)