Question

I want to start my UIActivityIndicator only if the action take too much time:

    - (void) continueLaunch {

        //operations
        //.....
        [activityIndic stopAnimating];

    }

    //my current method
    - (void)lauchApplication {          
        [activityIndic startAnimating];
        [self performSelector:@selector(continueLaunch) withObject:nil afterDelay:0.0f];
    }   

    //what I want to do
    - (void)lauchApplication {
         if ([self performSelector:@selector(continueLaunch) withObject:nil afterDelay:0.0f]duration > 1 second){
              [activityIndic startAnimating];
         } 
    }

How can I do that ?

Answer 1

I think the best aproach is to start the Indicator after the duration you want to wait, and if in some moment before that duration something happens, you can cancel it:

[self performSelector:@selector(startAnimation) withObject:nil afterDelay:1.0f]

And for cancel it (From Apple Doc):

To cancel a queued message, use the
cancelPreviousPerformRequestsWithTarget: or
cancelPreviousPerformRequestsWithTarget:selector:object: method.