Integer not incrementing because of an if statement

Question

I have an Objective-C app here - and I am wishing to alter a variable (integer) each time the app runs. My code below will work, but when the integer reaches the number specified in the if statement, it no longer increments as instructed.
- (void)awakeFromNib
[NSUserDefaults init];
int numberOfTimes;
numberOfTimes = [[NSUserDefaults standardUserDefaults] integerForKey:@"used"];
++numberOfTimes;
[[NSUserDefaults standardUserDefaults] setInteger:numberOfTimes forKey:@"used"];
NSLog (@"%d", [[NSUserDefaults standardUserDefaults] integerForKey:@"used"]);
if ([[NSUserDefaults standardUserDefaults] integerForKey:@"used"]<15){
Can anyone pinpoint or think of a reason why this would be happening?
Cheers,
Ricky.

Answer 1

Hi Ricky--
I can't be sure what's happening with your code. But I can suggest an alternate way to do it that will increment forever.
The first part, in the initializer, just sets up sensible defaults when you app has never run before. Then the second part, during the awake from nib, actually reads the saved defaults, increments the integer, then saves it back.
+ (void)initialize
// Get a dictionary for my default values:
NSMutableDictionary *defaultValues = [NSMutableDictionary dictionary];
// initially let it be 0:
[defaultValues setObject:[NSNumber numberWithInt:0] forKey:@"used"];
// Register my dictionary with the defaults system:
[[NSUserDefaults standardUserDefaults] registerDefaults:defaultValues];
NSLog(@"Registered defaults: %@", defaultValues);
- (void)awakeFromNib
// get the user defaults for this app:
NSUserDefaults *userDefaults = [NSUserDefaults standardUserDefaults];
// Get the integer value:
int launchCount = [userDefaults integerForKey:@"used"];
NSLog(@"Pre-increment value: %i", launchCount);
launchCount++;
if (launchCount <= 5 )
NSLog(@"Post-increment value: %i", launchCount);
else
NSLog(@"Post-increment is over 5: %i", launchCount);
// Save it back to the defaults, so it'll show up again next launch:
[userDefaults setInteger:launchCount forKey:@"used"];
The values set in the initialization would be used if there's nothing stored on disk yet for the app. But if the app has already run once, when you get the user defaults in the awake from nib method, the defaults system is smart enough to know that the application has preferences stored on disk, so it gives those to you instead.
I also like to use more variables to store values. I probably could have gotten by with nesting more methods, but that confuses me. And I think it might provide a key to why your integer stops being incremented, but I'm not sure I can pinpoint why.
charlie