Question

I have a button in my app that calls a long asynchronous function that we do not want to have called multiple times concurrently. However when I start mashing the button, it always sends as many messages as taps. I want to stop the button from responding while the function is running. I currently have a flag that stops execution of the function when the function is active in another thread, and the button is set to be hidden as soon as it enters this function, but these don’t have any effect.

Thanks for any help!

Answer 1

Assuming:

1. Your button has an IBOutlet reference.
2. You have an IBAction on the button.

Then you can simply set the button’s Enabled property to NO, and re-enabled when you receive notification from your ASYNC task that its done.

-(IBAction) buttonClicked {
    [myButton setEnabled:NO];
    //Do stuff
}

-(void) notificationHandlerMethodForAsyncTaskDone:(NSNotification *)notification {
    [myButton setEnabled:YES];
    //Do stuff
}