iosiphoneobjective-csettingsroot.plist

Option toggled in Settings.app not always detected in applicationDidBecomeActive

I have a Root.plist file which is used for my app's settings. It has a toggle switch with an identifier of reset_achievements_preference. In the applicationDidBecomeActive method, I have this code:

- (void)applicationDidBecomeActive:(UIApplication *)application
{
    NSLog(@"reset achievements: %i", [[NSUserDefaults standardUserDefaults] boolForKey:@"reset_achievements_preference"]);

    if ([[NSUserDefaults standardUserDefaults] boolForKey:@"reset_achievements_preference"]) {
        [[NSUserDefaults standardUserDefaults] setBool:NO forKey:@"reset_achievements_preference"];
        [[NSUserDefaults standardUserDefaults] synchronize];

        //Code to react to this change
    }
}

Sometimes it hits the NSLog and notices the object change, but sometimes it doesn't. I wonder if I'm dealing with this incorrectly?

Solution

  • Try adding:

    [[NSUserDefaults standardUserDefaults] synchronize]

    To applicationDidBecomeActive: before anything else to refresh the status of the user defaults. Thy synchronize method is called periodically by the application, but you can refresh it manually.