Re: Defaults not stored
Re: Defaults not stored
- Subject: Re: Defaults not stored
- From: Stephane Sudre <email@hidden>
- Date: Thu, 04 Apr 2013 10:18:03 +0200
On Thu, Apr 4, 2013 at 5:56 AM, Steve Mills <email@hidden> wrote:
> My screensaver follows examples I've seen as far as creating its defaults in its initWithFrame method:
>
> ScreenSaverDefaults* defaults = [ScreenSaverDefaults defaultsForModuleWithName:MyModuleName];
>
> // Register our default values:
> fileMan = [[NSFileManager alloc] init];
>
> NSURL* defaultURL = [NSURL URLWithString:@"/Applications"];
> NSArray* pictFolders = [fileMan URLsForDirectory:NSPicturesDirectory inDomains:NSUserDomainMask];
>
> if(pictFolders != nil && [pictFolders count] > 0)
> defaultURL = [[pictFolders objectAtIndex:0] filePathURL];
>
> [defaults registerDefaults:[NSDictionary dictionaryWithObjectsAndKeys:
> defaultURL, kImageFolderPathPrefKey,
> [NSNumber numberWithInteger:NSOnState], kUsePolaroidBorderPrefKey,
> nil]];
>
> Then later in my startAnimation method I grab that value, but it's nil:
>
> ScreenSaverDefaults* defaults = [ScreenSaverDefaults defaultsForModuleWithName:MyModuleName];
> NSURL* url = [defaults URLForKey:kImageFolderPathPrefKey];
>
> I tried calling [defaults synchronize] after registerDefaults, but that didn't help. I also tried creating a mutable dictionary and adding the url and integer via setObject:forKey:. No matter which method I use to create the defaults, I can definitely *see* the url in the defaults object, but it comes out nil when I ask for URLForKey. If I actually go through the System Preferences window and set my screen saver's prefs from there, then the url comes out as a valid value.
>
> What am I doing wrong?
AFAIK, you can't save a NSURL instance in the defaults/preferences of
an application using a NSDictionary or NSArray that contain a NSURL
object. You have to use the setURL: forKey: for it work.
Personally, I've given up thinking about using NSURL in defaults for a
screen saver and just use a NSString with the absolute path.
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