Question

I am using XCode4.2 and developing and iPhone App

I ususally save data using NSUserdefaults (mainly strings … )

I usually write the following two lines to save the data :

historyvar=[NSUserDefaults standardUserDefaults];
[historyvar setObject:boolVar forKey:@"bool"];

I am trying to save a BOOL variable but I get a red error when I do that :

Implicit converstion of'BOOL' (aka 'signed char') to 'id' is disallowed with ARC

and I get a warning (yellow error)

incompatible integer to pointer conversion sending ‘BOOL'(aka ‘signed char’) to parameters of type ‘id’

is there anything equivalent to NSUserDefaults for Bool varibles ?
thanks

Answer 1

There’s a -setBool:forKey: method of NSUserDefaults.

[[NSUserDefaults standardUserDefaults] setBool:boolValue forKey:@"bool"];

and then you’ll be able to get an actual BOOL value returned like this:

BOOL saved = [[NSUserDefaults standardUserDefaults] boolForKey:@"bool"];

This way you don’t have to mess with NSNumbers.