How to pass data to root controller from one of the sub controller and dismiss all the sub controllers?

Question

I have 4 view controllers lets say A, B, C, and D and all these view controllers will be pushed as A->B->C->D.

I have a Dictionary in 'D' and I need to pass this to Dictionary 'A' and I need to Dismiss all the controllers except 'A' Controller to do some action with that received data passed from 'D'.

What are the approaches to pass data between view controllers and dismiss all sub controllers as per my requirement?

read the duplicated please in all form of passing data from one viewcontroller to another and the notification one is suitable for this purspose — Yoel Jimenez del valle, Oct 23 '19 at 14:13
there are ways to do that but i guess you're using a navigation viewcontroller so you could call `self..navigationController.popToViewController` — Yoel Jimenez del valle, Oct 23 '19 at 14:58
thanks, u read well my question, this is what I am missing, and I am looking for pice of code. — RAVITEJA KADALI, Oct 23 '19 at 15:02

score 0 · Answer 1 · answered Oct 23 '19 at 14:30

In ViewController A, in ViewDidLoad create notification

[[NSNotificationCenter defaultCenter] addObserver:self
                                            selector:@selector(getDictionaryFromD:)
                                                 name:@"getDictionaryFromD" object:nil];

Next implement this method in View Controller A

-(void)getDictionaryFromD:(NSNotification*)notify {
   [[[[self view]window]rootViewController] dismissViewControllerAnimated:false completion:nil];
    NSDictionary *dict = [notify object];
}

Now in view Controller D pass dict by calling this notification like this

[[NSNotificationCenter defaultCenter] postNotificationName:@"deviceWidthChange" object:WHDict];

how about dismissing the sub-controllers – RAVITEJA KADALI Oct 23 '19 at 14:57 — RAVITEJA KADALI, Oct 23 '19 at 14:57

How to pass data to root controller from one of the sub controller and dismiss all the sub controllers?

1 Answers1