The prepareForSegue method is called just before a segue is performed and allows you to pass variables to the new view controller that is the segue’s destination.
While the prepareForSegue for segue call hasn’t changed between iOS 5 and iOS 6 there has been a new method, shouldPerformSegueWithIdentifier, that has been introduced in iOS 6 which allows you to specify if you want the segue to be be performed or not.. It’s very useful especially for things like only displaying one popover at a time
I’ve included an example of how to to use it below:
-(void) prepareForSegue:(UIStoryboardPopoverSegue *)segue sender:(id)sender
{
if ([[segue identifier] isEqualToString:@"Next View"]) {
//The segue is to the a View Controller called NextViewController
(NextViewController *nvc = (NextViewController *) segue.destinationViewController;
//Set properties in the view controller - note the views outlets are not set yet
nvc.stringProperty1 = @"This Is Property 1";
nvc.property2 = @"This Is Property 2";
//Set self as the delegate
nvc.delegate = self;
}
}
- (BOOL)shouldPerformSegueWithIdentifier:(NSString *)identifier sender:(id)sender {
if ([identifier isEqualToString:@"Crazy View" ]) {
return NO;
}
return YES;
}
}
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