Delete all keys from a NSUserDefaults dictionary iOS
If you have a look at the NSUserDefaults documentation you will see a method - (NSDictionary *) dictionaryRepresentation. Using this method on the standard user defaults, you can get a list of all keys in the user defaults. You can then use this to clear the user defaults:
- (void)resetDefaults { NSUserDefaults * defs = [NSUserDefaults standardUserDefaults]; NSDictionary * dict = [defs dictionaryRepresentation]; for (id key in dict) { [defs removeObjectForKey:key]; } [defs synchronize];}
Shortest way to do this with the same results like in Alex Nichol's top answer:
NSString *appDomain = NSBundle.mainBundle.bundleIdentifier;[[NSUserDefaults standardUserDefaults] removePersistentDomainForName:appDomain];[[NSUserDefaults standardUserDefaults] synchronize];
One-liner:
[[NSUserDefaults standardUserDefaults] removePersistentDomainForName:NSBundle.mainBundle.bundleIdentifier];