gistfile1.m

UIButton *fetchButton = ^(NSString *labelText, CGFloat scalar, UIButtonType type, CGPoint origin) {

  UIButton *button = [UIButton buttonWithType:type];
  UILabel  *label  = [[UILabel alloc] init];

  [label setText:labelText];
  
  CGSize buttonFrameSize = CGSizeMake([label.text sizeWithFont:label.font].width * scalar * 0.66f,
                                      [label.text sizeWithFont:label.font].height * scalar);

  [button setTitle:label.text forState:UIControlStateNormal];
  [button setTitleEdgeInsets:UIEdgeInsetsZero];
  [button setFrame:CGRectMake(origin.x - buttonFrameSize.width * 0.5,
                              origin.y - buttonFrameSize.height * 0.5,
                              buttonFrameSize.width,
                              buttonFrameSize.height)];
  return button;

}(@"Fetch Data", 2.0f, UIButtonTypeRoundedRect,
  CGPointMake(self.frame.size.width / 2, self.frame.size.height / 2));