Question

Are there any other way of displaying an object/button/whatever,for example 3 seconds than with an NSTimer?
Could I use an animation to do this?

Answer 1

You may use -performSelector:withObject:afterDelay:, though it uses a timer internally.

[theLabel performSelector:@selector(removeFromSuperview) withObject:nil afterDelay:3];

You cannot use -setHidden: with this method because 1 is not an object, but you can use NSInvocation.

NSInvocation* invoc = [NSInvocation invocationWithMethodSignature:[theLabel methodSignatureForSelector:@selector(setHidden:)]];
[invoc setTarget:theLabel];
[invoc setSelector:@selector(setHidden:)];
BOOL yes = YES;
[invoc setArgument:&yes atIndex:2];
[invoc performSelector:@selector(invoke) withObject:nil afterDelay:3];