make animation wait for 1 sec – Objective-c

Question

I'm working on a memory game with 6 UIButtons that changes background-image when they're touched. I check if two of the taped ones are the same with booleans. I have 6 different and each set to YES in each button action.

If first BOOL not is equal to second BOOL then they should change back to their original background-image. My problem is that when the second button is clicked, directly, the two buttons changes. I want the second button's image to be seen before they change. This is my code:

- (void)buttonClicked:(id)sender
{
buttonClickedBOOL = YES;

[animation stuff....]
if (randomNumberi == 0)
{
    [button setBackgroundImage:[UIImage imageNamed:@"apple.png"] forState:UIControlStateNormal];
}
else if (randomNumberi == 1)
{
    [button setBackgroundImage:[UIImage imageNamed:@"windows_logo.png"] forState:UIControlStateNormal];
}
else if (randomNumberi == 2)
{
    [button setBackgroundImage:[UIImage imageNamed:@"fujitsu.png"] forState:UIControlStateNormal];
}
[UIView commitAnimations];

[self gameCheck];
}

This is where I check the conditions:

- (void)gameCheck
{
if ((buttonClickedBOOL == YES) && (button2ClickedBOOL == YES))
{
    button.enabled = NO;
    button2.enabled = NO;
    button3.enabled = NO;
    button4.enabled = NO;
    button5.enabled = NO;
    button6.enabled = NO;

    if (randomNumberi == randomNumberi2)
    {
        NSLog(@"The same");
    }
    else
    {
        [animations stuff....]
        [button setBackgroundImage:nil forState:UIControlStateNormal];
        [UIView commitAnimations];

        [animations stuff....]
        [button2 setBackgroundImage:nil forState:UIControlStateNormal];
        [UIView commitAnimations];
    }

}

The random variables are set in viewDidLoad to int numbers 0-3 and represents which images which should be set.

Answer 1

Define your animation code in a different method and call it like this:

[self performSelector:@selector(yourAnimatingMethod) withObject:nil afterDelay:1.0];

Answer 2

From the UIView class reference.

Use the method animateWithDuration:delay:options:animations:completion:

This method takes a delay parameter. It also uses blocks for the animation and completion handler. It is very useful.