Question

I am working with the simulator, and I am doing something like this when the app starts to check if it was opened for the first time:

and then checking if that key/value is empty so that this code executes only once:

 NSUserDefaults *standardUserDefaults = [NSUserDefaults standardUserDefaults];

    if([standardUserDefaults objectForKey:@"first_time_cookie"] == nil)
    {
        [standardUserDefaults setBool:YES forKey:@"first_time_cookie"];
        [[NSUserDefaults standardUserDefaults] synchronize];
    }

but every time I run the program, it executes again. Any idea what is going wrong here?

Answer 1

a bool is not an object. This should work

if([standardUserDefaults boolForKey:@"first_time_cookie"] == NO)
{
    [standardUserDefaults setBool:YES forKey:@"first_time_cookie"];
    [[NSUserDefaults standardUserDefaults] synchronize];
}