Question

I am driving myself crazy over what I am sure is a basic error but I just can’t find it. I have simple delegates and everything works except this one. I can’t see any difference from the way I normally handle things.

@interface MasterViewController () <DetailViewControllerDelegate, SettingsViewControllerDelegate>

@end

@implementation MasterViewController

....

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {

if([[segue identifier] isEqualToString:@"ShowSettings"]) {
    // here settingsViewController._delegate is 0x075...
    // why? where is this coming from?
    SettingsViewController *settingsViewController = [segue destinationViewController];
    // here settingsViewController._delegate is 0x00000 which I would expect
    [settingsViewController setDelegate:self];             
    // here settingsViewController._delegate is still 0x0000 -- why?
  }
}

Answer 1

I fixed it. That took way too long. I’ve learned my lesson. Thanks Jon for reminding me to use the debugger!

    SettingsViewController *settingsViewController = [segue destinationViewController];        
    NSArray *childViewControllers = [NSArray arrayWithArray:[settingsViewController childViewControllers]];
    [[childViewControllers objectAtIndex:0] setDelegate:self];

It works, but is this the right way to do it? [segue destinationViewController] was a UINavigationController.