CODEWITHSUNDEEP
cocoauilabelnstextfield
ZionKing
ZionKing

Reputation: 326

NSTextfield not getting updated when called from another class

I have a runthis.h file where I have a label:

IBOutlet NSTextField *updateStatus;

Now in my runthis.m file, in a class called startTest I update this using

-(IBAction) startTest:(id)sender {
        [updateStatus setStringValue:@"Testing"];
}

Now if I create an object for the runthis class in another file testing.m and then try this:

 runthis *testSomething = [[runthis alloc] init];
[testSomething performSelectorInBackground:@selector(startTest:) withObject:nil];

But I find the UI for the label *updateStatus will never get set to "Testing" when I call it from testing.m If I call this directly from runthis.m, then the UI gets updated as expected. Any ideas why ? Thanks.

Upvotes: 0

Views: 233

Answers (1)

Francis McGrew
Francis McGrew

Reputation: 7272

Unless runthis is located in a separate nib, it's outlet won't be connected automatically, you'll have to pass it as a reference. In testing you'll have to wire up the text field, then pass it to runthis like:

[testSomething setStatusField:updateStatus];

Or you could create a reference to your testing object from your runthis object (call it a delegate) and have testing update the UI directly. That's the approach I would use.

Upvotes: 1

Related Questions