how to attributes for customer UIButon - ios

Question

I have a button that I am trying to add a border to like this:
.h
#interface MyButton : UIButton
.m
#implementation MyButton
- (id)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self) {
}
self.layer.borderWidth=1.0f;
self.layer.cornerRadius = 4;
self.layer.borderColor=[[UIColor blueColor] CGColor];
return self;
}
The border is not set, what am I doing wrong?

Answer 1

UIButton is not meant to be subclassed, I recommend using a category if all you are trying to do is style buttons. Here is an example category to accomplish what you want... note that this has not been run through a compiler, but you get the idea:
UIButton+Styles.h
#import <UIKit/UIKit.h>
#interface UIButton (Styles)
-(void)styleWithBorderColor:(UIColor *)color;
#end
.m
#import "UIButton+Styles.h"
#import <QuartzCore/QuartzCore.h>
#implementation UIButton (CURStyles)
-(void)styleWithBorderColor:(UIColor *)color
{
self.layer.masksToBounds = YES;
self.layer.cornerRadius = 4.0f;
self.layer.borderWidth = 1.0f;
self.layer.borderColor = color.CGColor;
}
#end
Now when you want to style a button simply import the category and call it like so:
[myButton styleWithBorderColor:[UIColor whiteColor]];
EDIT:
Please see comments... these should be prefixed to avoid confusion with framework methods

Answer 2

Add
self.layer.masksToBounds = YES;
Also if you are creating your button via Nib or Storyboard file initWithFrame method will not be called. In such a case do not forget to place your additional code in awakeFromNib method
- (void)awakeFromNib
{
self.layer.masksToBounds = YES;
self.layer.borderWidth=1.0f;
self.layer.cornerRadius = 4;
self.layer.borderColor=[[UIColor blueColor] CGColor];
}

Answer 3

There is nothing wrong with subclassing UIButton at all.. I suggest maybe you need to set
self.backgroundColor = nil; // or [UIColor clearColor]
self.layer.backgroundColor = desiredBackgroundColor.CGColor;
The backgroundcolor in UIView covers the border on the layer, move the background color to the layer instead to put it behind (and clip it to) the border