how to save bool value in KeychainItemWrapper

Question

I want to store bool value in KeychainItemWrapper, how to store ?

I have tried this code, but it gives me error.

 [keychain setObject:YES forKey:(__bridge BOOL)kSecAttrIsInvisible];

what's the error are you getting? – Retro Mar 31 '15 at 13:14 — Retro, Mar 31 '15 at 13:14

rckoenes · Accepted Answer · 2015-03-31T13:23:08.257

6

The BOOL is a primitive type and the setObject:forKey: only excepts classes that derive from NSObject.

So use NSNumber it has a special method for it + numberWithBool::

[keychain setObject:[NSNumber numberWithBool:YES] forKey:@"someKey"];

And if you need to bool again:

 NSNumber *value = [keychain objectForKey:@"someKey"];
 BOOL boolValue = [value boolValue];

edited Mar 31 '15 at 13:23

answered Mar 31 '15 at 13:18

rckoenes

Retro · Answer 2 · 2015-03-31T13:30:44.633

0

Also you can use Shorthand like

[keychain setObject:@(YES) forKey:(__bridge BOOL)kSecAttrIsInvisible];

edited Mar 31 '15 at 13:30

answered Mar 31 '15 at 13:24

Retro

1

Shorthand are called Literals and are not a feature of Objective-C 2.0 but [Clang 3.7](http://clang.llvm.org/docs/ObjectiveCLiterals.html) and used in LLVM 4.0 – rckoenes Mar 31 '15 at 13:26

2 Answers2