Please don't use sleep() on the main thread of a UI application...... If you really want to do this, I'd suggest using an ivar or a static variable to facilitate going through the operation using performSelector:withObject:afterDelay:
e.g.: static int labelLoopCounter = 10; -(IBAction)buttonPressed { if (labelLoopCounter == 10) { labelLoopCounter = 0; [self updateLabel]; } } -(void)updateLabel { if (labelLoopCounter < 10) { label.text = [stringList objectAtIndex:labelLoopCounter]; labelLoopCounter++; [self performSelector:@selector(updateLabel) withObject:nil afterDelay:1.0]; } } On Feb 21, 2010, at 7:33 AM, Michael Davey wrote: > Hi, > > I have, for a bit of fun, taken my first steps out of Mac development and > into iPhone development, and have encountered a bit of a problem. > > Basically, what I want to do is update a UILabel when a button is clicked in > the view, but I want to be able to update it in intervals with different > values. I have tried basically doing this (although this is simplified for > the purposes of demonstration) in the IBAction for the button click event: > > for (int i = 0; i < 10; ++i) { > label.text = [stringList objectAtIndex:i]; > sleep(1); > } > > What happens is that I only see the last value that is set - does anyone here > know what I should be doing to code this correctly? > > Mikey_______________________________________________ > > Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) > > Please do not post admin requests or moderator comments to the list. > Contact the moderators at cocoa-dev-admins(at)lists.apple.com > > Help/Unsubscribe/Update your Subscription: > http://lists.apple.com/mailman/options/cocoa-dev/luketheh%40apple.com > > This email sent to luket...@apple.com _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com