iOS UIView#addSubview and threading

[Runnable]

Hi @all,

i just wanted to add a subview to my main window from another thread.
like so:

AppDelegate.m
...
UpdateThread *t = [[UpdateThread alloc]init];
[t setWindow:window];
[t start];
...

UpdateThread#main
...
UILabel *l = [[UILabel alloc]initWithFrame:...];
//label's setup
[window addSubview:label];
...

Now i have the problem, that it does not work, there's no label visible after the thread terminates.
If i run the main's code in the Application's thread that calls applicationDidFinishLaunching it works properly.

can anyone please help me ?

 

[caveman_uk]

AFAIK you should do UI updates on the main thread.

 

[PhoneyDeveloper]

You can't access UI code from a second thread like this. You can use performSelectorOnMainThread from your secondary thread to make the update occur on the main thread.

 

[Runnable]

yeah, thank u PhoneyDeveloper,
that's the way it works