Question

Ok, since i’m new to obj-c and have a background in windows developing, i’m searching for the counterpart of Regedit.

I’ve understand that i should use NSUserDefaults, right?

So, i have created two functions, one for setting and one for getting values. They look like this: (And yea… ignore my silly functions names) 🙂

//SET:
-(void)SetRegeditValue:(NSString*)Name:(NSString*)Value
{
    NSUserDefaults *ud = [NSUserDefaults standardUserDefaults];
    NSDictionary *dict = [NSDictionary dictionaryWithObjectsAndKeys:Value,Name, nil];
    [ud registerDefaults:dict];
}
//GET:
-(NSString*)GetRegeditValue:(NSString *)Name
{
    NSUserDefaults *prefs = [NSUserDefaults standardUserDefaults];
    NSString *get = [prefs stringForKey:Name];

    if(get)
        return get;
    else
        return @"Not found!";
}

And i use them like this:

//TO SET:
SetRegitValue:@"my_value":@"my_value_name";
//TO GET:
GetRegeditName:@"my_value_name";

I don’t know if this is the “right” way to do it, but it works.
The only thing is that when i kill the app, it does not remember these values and i get “Not found!”. Is there something i have to set so it REALLY saves these variables?

Oh, i’m building a cocoa application.

Answer 1

The registerDefaults: method is used to assign default values which get returned when you ask for an undefined key. To actually store a value, you need to use one of the set*:forKey: methods. Specifically, you should use setObject:forKey: since you are saving strings, which are objects.

- (void)SetRegeditValue:(NSString *)name :(NSString *)value {
    [[NSUserDefaults standardUserDefaults] setObject:value forKey:name];
}

I used the same argument order that your code did, but note that it does not match the example you showed, which passed the value first.