it possible to Pass Data with popViewControllerAnimated?

Question

I came across an interesting problem, i have main ViewController let\'s call him MainVC with navigationController and i am doing performSegueWithIdentifier from him to Mine

Answer 1

The best way to do it is by using a delegate.

//SecVCDelegate.h

#import 

@protocol SecVSDelegate 

@optional
- (void)secVCDidDismisWithData:(NSObject*)data;
@end

//SecVC.h

#import 
#import "SecVSDelegate.h"

@interface SecVC : UIViewController

/** Returns the delegate */
@property (nonatomic, assign)   id delegate;

@end

//SecVC.M

...

- (void) dealloc
{
...
delegate = nil
...
}

When ever you popViewControllerAnimated, right after it (or before it) you do this

if(_delegate && [_delegate respondsToSelector:@selector(secVCDidDismisWithData:)])
{
[_delegate secVCDidDismisWithData:myDataObject];
}

And in the MainVC you must be certain that you implement the delegate function //MainVC.m

- (void)secVCDidDismisWithData
{
//do whatever you want with the data
}

To avoid any warnings you must tell that the MainVC class implements the delegate like this:

//MainVC.h

#import "SecVCDelegate.h"
...
@interface MainVC : UIViewController 
...
secVCInstance.delegate = self;
[self.navigationController pushViewController:secVCInstance]; 
...