PKRevealController doesn't play well with unwind segues

[banaslee]

I had a problem on iOS 8 when the view controller chosen to start querying for a unwind action handler was a PKRevealController.

PKRevealController is unable to provide the right handler from its hierarchy and the action is left unhandled.

My solution was to override - viewControllerForUnwindSegueAction:fromViewController:withSender: like this:

- (UIViewController *)viewControllerForUnwindSegueAction:(SEL)action fromViewController:(UIViewController *)fromViewController withSender:(id)sender {
    NSArray *children = @[self.frontViewController];
    if (self.leftViewController) {
        children = [children arrayByAddingObject:self.leftViewController];
    }
    if (self.rightViewController) {
        children = [children arrayByAddingObject:self.rightViewController];
    }

    UIViewController *foundViewController;

    for (UIViewController *childViewController in children) {
        foundViewController = [childViewController viewControllerForUnwindSegueAction:action
                                                                   fromViewController:fromViewController
                                                                           withSender:sender];

        if (foundViewController) {
            break;
        }
    }

    if (!foundViewController) {
        foundViewController = [super viewControllerForUnwindSegueAction:action
                                                     fromViewController:fromViewController
                                                             withSender:sender];
    }

    return foundViewController;
}

I'm not able to do a pull request right now. I can only provide with this code for now.