Question

I’m trying to make some sort of delay in the view controllers changing. I need to be able to hit a button for the next page but also not have it change instantly. that is, somehow give it a timer or delay. Could someone point me in the right direction or give me a little help?

Answer 1

[self performSelector:@selector(selector) withObject:self afterDelay:delay];

can be used to delay the execution of a method. I’ve heard the sleep() function tossed around too, but it locks up the thread you’re on.

NSTimer also has a helpful convenience method:

[NSTimer scheduledTimerWithTimeInterval:2.0
    target:self
    selector:@selector(selector)
    userInfo:nil
    repeats:NO];

In particular, this timer will call the method named “selector” after 2 seconds, and not repeat itself.

EDIT: in your case, you probably want to use performSelector:withObject:afterDelay: like so:

[self.button addTarget:self action:@selector(myMethod) forControlEvents:UIControlEventTouchUpInside];

Then within myMethod, perform your delay, which looks like this:

[self performSelector:@selector(myTransition) withObject:self afterDelay:4.00];