Mysterious NULL Coming From NSUserDefaults

i've been enjoying nsuserdefaults when going through hillegeass book.

i've decided small app has 2 colors stores. these colors colorwell via preference pane.

have bounded values of wells backgroundwell , linewell in ib.

have appropriately named methods. know bindings ok becuase if return [nscolor whitecolor] instead of data
nsuserdefaults, they're yellow when open pane. that's ok.

pretty sure i'm getting null defaults because wells black. have no "blackcolor" in project. searched that.

doing wrong? thought nsuserdefaults pretty simple...

below getters , setters.

code:

  -(nscolor*)backgroundwell {         nslog(@"called bgwell");      nsuserdefaults* defaults = [nsuserdefaults standarduserdefaults];     nsdata* data = [defaults objectforkey:@"bgcolor"];     nscolor* newcolor = [nskeyedunarchiver unarchiveobjectwithdata:data];     nslog(@"retrieved color bg %@", newcolor);     //nslog(@"%@",[nskeyedunarchiver unarchiveobjectwithdata:data]);     return [nskeyedunarchiver unarchiveobjectwithdata:data]; } -(nscolor*)linewell {      nsuserdefaults* defaults = [nsuserdefaults standarduserdefaults];     nsdata* data = [defaults objectforkey:@"linecolor"];     return [nskeyedunarchiver unarchiveobjectwithdata:data]; }  -(void)setbackgroundwell: (nscolor*)newcolor {     nslog(@"new color %@", newcolor);     nsuserdefaults* defaults = [nsuserdefaults standarduserdefaults];     nscolor* color = [backgroundwell color];     nsdata* colordata = [nskeyedarchiver archiveddatawithrootobject:color];     [defaults setobject:colordata forkey:@"bgcolor"];     nslog(@"changing background color"); } -(void)setlinewell: (nscolor*)newcolor {     nslog(@"new color %@", newcolor);     nsuserdefaults* defaults = [nsuserdefaults standarduserdefaults];     nsdata* colordata = [nskeyedarchiver archiveddatawithrootobject:[linewell color] ];     [defaults setobject:colordata forkey:@"linecolor"];     nslog(@"changing line color");     }

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below +(void) initialize method

code:

+(void) initialize {         nsmutabledictionary* defaultvalues = [nsmutabledictionary dictionary];         nsdata* backgroundcolordata = [nskeyedarchiver archiveddatawithrootobject:[nscolor greencolor] ];     nsdata* linecolordata = [nskeyedarchiver archiveddatawithrootobject:[nscolor whitecolor] ];         [defaultvalues setobject:backgroundcolordata forkey:@"bgcolor"];     [defaultvalues setobject:linecolordata forkey:@"linecolor"];         [[nsuserdefaults standarduserdefaults] registerdefaults:defaultvalues];     nslog(@"registered defaults %@", defaultvalues);     }[/

size]

edit:
need add something: tried reading nsstring prefs , worked fine. it's due writing nsdata...

 

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