objective c - Creating a Button to Make Buttons -

i have setup create ui button when button clicked. seemed straightforward @ first, until decided create own ui button class. of works, except fact button not show on screen. have few ideas on might causing it, helpful have pair of eyes @ code.

custombutton.m

- (id)initwithframe:(cgrect)frame   //this function provided {     self = [super initwithframe:frame];     if (self) {         //this stuff wrote, wrong.         uibutton* button = [uibutton buttonwithtype:uibuttontyperoundedrect];         button.frame = cgrectmake(1,2,100,50);         [button settitle:@"test!" forstate:uicontrolstatenormal];         }    return self;     nslog(@"worked?"); //this log outputted! however, if put before "return self", doesn't work. i'm guessing problem "return self" not being caught.   } 

view.m

-(ibaction)createdrawer:(id)sender {     custombutton* newbutton = [custombutton alloc];      [newbutton initwithframe:newbutton.frame];      [self.containerview addsubview:newbutton];     nslog(@"asdasdadads"); //this gets executed, when button clicked     } 

line 3 of view.m gives warning "expression result unused." i'm guessing has "return self" not being used initwithframe?

yes, does, , because of class clusters, should really assigning return value of init instance:

custombutton *newbutton = [[custombutton alloc] initwithframe:f]; 

also, conventionally class names begin capital letter. name class custombutton.

edit: problem in initwithframe: method, don't set properties on self on instance (button). obviously, won't affect state of self.