How can I set a button background color on iPhone?

Question

How can I set a custom background color of a button?

Interface Builder doesn\'t seem to have an interface to do this.

Is it only available programmatically

Answer 1

Here's a variation on @user200212's solution (http://stackoverflow.com/a/8547424). It uses the UIBezierCurve class to fill the button and draw a 1px black border around it:

UIButton+ColoredBackground.h

//  UIButton+ColoredBackground.h

#import 

@interface UIButton (ColoredBackground)

- (void)setBackgroundColor:(UIColor *)backgroundColor forState:(UIControlState)state;
+ (UIColor *) silverColor;

@end

UIButton+ColoredBackground.m

//  UIButton+ColoredBackground.m
#import "UIButton+ColoredBackground.h"
#import 

@implementation UIButton (UIButton_ColoredBackground)

- (void)setBackgroundColor:(UIColor *)backgroundColor forState:(UIControlState)state{

    CGSize gcSize = self.bounds.size;
    UIGraphicsBeginImageContext(gcSize);

    // Create a Bezier Path around the button, and fill it with the background color
    UIBezierPath *outsideEdge = [UIBezierPath bezierPathWithRoundedRect:self.bounds cornerRadius:8.0f];
    [backgroundColor setFill];
    [[UIColor blackColor] setStroke];
    outsideEdge.lineWidth = 1.0;
    [outsideEdge fill];
    [outsideEdge stroke];

    // Create the background image
    UIImage *image = UIGraphicsGetImageFromCurrentImageContext();    

    UIGraphicsEndImageContext(); 

    // Set image as button's background image for the given state
    [self setBackgroundImage:image forState:state];

    // Ensure rounded button
    self.clipsToBounds = YES;
    self.layer.cornerRadius = 8.0;
}

@end

Usage:

[myButton setBackgroundImageByColor:[UIColor greenColor] forState:UIControlStateNormal];