Question

i want to make my game loading image last longer(Default.png), how?

Answer 1

What you can do is, in your application did finish launching method you can use NSThread to sleep for time interval of 2 sec.

Like this

-(void)applicationDidFinishLaunching
{
     [NSThread sleepForTimeInterval:2.0f];
}

But if you want to do some work behind the sense than you can dispatch a custom queue to get the work done using Grand Central Dispatch.

Check the apple documentation on it.