Setting UILabel text from rootViewController

Question

I have two view controllers 1.rootviewController 2.myStatusDisplayViewController.

I have c stack call back function which returns a c string.That particular call back function calls a function in my rootviewcontroller. In my rootview controller I have reference to myStatusDispalyViewController using that reference I'm trying to update the label in myStatusDisplayviewController.

app.myStatusDisplayViewController.displayCallStatus.text =updatedCallStatus;
[app.myStatusDisplayViewController viewDidLoad];
[app.myStatusDisplayViewController viewWillAppear:YES];

Jeeva are you setting text in Dispatch.Queue.main?? actually your problem is not 100% understandable — Dheeraj D, Dec 08 '16 at 12:28
@DheerajD im completely new to objective c..so i dont know about DIspatch.queue.main.above code changes my label text but it is not getting updated in screen.but when i click some other buttons my label gets the updated string.i want to refresh my viewcontroller label without clicking my buttons.i hope u got my point.. — Jeeva, Dec 08 '16 at 12:31

Dheeraj D · Accepted Answer · 2016-12-08T12:37:55.607

0

Set your text in that block:

  dispatch_async(dispatch_get_main_queue(), ^{
     app.myStatusDisplayViewController.displayCallStatus.text =updatedCallStatus;
        });

Hope it will work.

edited Dec 08 '16 at 12:37

answered Dec 08 '16 at 12:35

Dheeraj D

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k wil give a try can u explain about dispatch_async or reference link to that method.. – Jeeva Dec 08 '16 at 12:36
Can you please let me know in which method you are setting the text? – Dheeraj D Dec 08 '16 at 12:38
https://www.raywenderlich.com/60749/grand-central-dispatch-in-depth-part-1 – Dheeraj D Dec 08 '16 at 12:39

Setting UILabel text from rootViewController

1 Answers1