How to pass data between viewcontrollers in tabbed applications?

Question

I have found 2 methods but am wondering if there's a better solution with xcode 5.

Tried printing a NSLog in prepareForSegue but it doesn't even get called?

What is the current best practice to pass data between viewcontrollers for tabbed applications using storyboard and with io6 support?

Use protocol / delegate, as prepareForSegue is for navigationController. — Armand DOHM, Mar 09 '14 at 09:26
check out UITabBarControllerDelegate method tabBarController:didSelectViewController: — ahmad, Mar 09 '14 at 09:28

score 0 · Accepted Answer · edited May 23 '17 at 12:14

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Have a look at this question: iPhone: How to Pass Data Between Several Viewcontrollers in a Tabbar App

Also the imho cleanest way is to use the NSNotificationcenter. It's simple: How to use NSNotificationcenter

edited May 23 '17 at 12:14

Community

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answered Mar 09 '14 at 09:27

Amandir

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I decided to go with the using AppDelegate method since data passed is minimal. – resting Mar 09 '14 at 16:42

score 0 · Answer 2 · answered Mar 09 '14 at 09:34

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singleton is a good idea. You can also do it by using AppDelegate. If your data is not huge you can store your data in AppDelegate and access those from any viewcontroller.

answered Mar 09 '14 at 09:34

Rashad

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vladicabg · Answer 3 · 2015-06-18T22:48:06.113

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I have used delegate approach from 1. I wanted to pass data between third and second view controller so I just added this into third view controller viewDidLoad to catch if user goes to third tab after the tab bar starts in the first view controller

SecondViewController *svc = [self.tabBarController.viewControllers objectAtIndex:1];
self.delegate = svc;

edited Jun 18 '15 at 22:48

answered Jun 18 '15 at 18:20

vladicabg

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How to pass data between viewcontrollers in tabbed applications?

3 Answers3