Perform push segue after an unwind segue

Question

I am working on a camera app where the camera views are shown modally. After I am done with cropping. I perform an unwind segue to the MainPageViewController. (

Answer 1

Taking forward this answer (I only had Objective-C code)

Subclass UIStoryBoardSegue

#import 

@interface MyStoryboardSegue : UIStoryboardSegue

/**
 This block is called after completion of animations scheduled by @p self.
 */
@property (nonatomic, copy) void(^completion)();

@end

And call this completion block after completion of animations.

@implementation MyStoryboardSegue

- (void)perform {
  [super perform];
  if (self.completion != nil) {
    [self.destinationViewController.transitionCoordinator
     animateAlongsideTransition:nil
     completion:^(id context) {
       if (![context isCancelled]) {
         self.completion();
       }
     }];
  }
}

@end