Pass data between third and first view controller

Question

I got three view controllers, A, B and C.
A --modal--> B ---push --> C

How can I pass data from C --> A? I have tried using protocols and delegate. However my delegate method in A is never called.

You'll have to post some code or no one will be able to help you. — jszumski, Jul 16 '13 at 15:43
@jszumski: I dont have any code yet. My question is a theoretical one. How can A know about data that is created in C, if A did not instantiate view controller C? — pangelovski, Jul 16 '13 at 17:17
See my answer about using NSNotificationCenter below. Check the links for details to make sure that it will accomplish what you need done. — CaptJak, Jul 16 '13 at 18:15

score 0 · Answer 1 · edited May 23 '17 at 10:32

0

You could possibly do this by using NSNotificationCenter see this post where I had a similar problem. The question might not fully apply, but the answer holds a possible solution for you. Also read up here for more data.

edited May 23 '17 at 10:32

Community

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answered Jul 16 '13 at 16:07

CaptJak

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score 0 · Answer 2 · answered Jul 16 '13 at 16:08

0

Or you can use your AppDelegate to hold a reference for A, and than work from there on.

answered Jul 16 '13 at 16:08

Blitz

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score 0 · Answer 3 · answered Jul 16 '13 at 16:14

You can store data in session (Create singleton object) and access it whatever you wish

@interface Session : NSObject

+(Session*) session;

@property (nonatomic) id data_to_access;

@end

@implementation Session
+(Session *)session
{
    static Session *sharedSingleton;

    @synchronized(self)
    {
        if (!sharedSingleton)
            sharedSingleton = [[Session alloc] init];

        return sharedSingleton;
    }
}
@end

Pass data between third and first view controller

3 Answers3