Check for first launch of my application

Question

How would I check if it is the first launch of of my application using NSUserDefaults and running some code for the first time my app opens?

Answer 1

This should point you in the right direction:

static NSString* const hasRunAppOnceKey = @"hasRunAppOnceKey";
NSUserDefaults* defaults = [NSUserDefaults standardUserDefaults];
if ([defaults boolForKey:hasRunAppOnceKey] == NO)
{
    // Some code you want to run on first use...
    [defaults setBool:YES forKey:hasRunAppOnceKey];
}