update: 现在可以用https://github.com/shaojiankui/iOS-Categories

如下效果:

效果

头像有borderColor,而类型是CGColorRef,在IB中没有这个类型,所以无法设置,需要设置cell的背景,也无法直接设置。所以扩展了Calayer:

CALayer+UIColor.h

#  import <QuartzCore/QuartzCore.h>
#  import <UIKit/UIKit.h>
@interface CALayer (UIColor)
@property(nonatomic, assign) UIColor* borderUIColor;

//setting background for UIView 
@property(nonatomic, assign) UIColor* contentsUIImage;
@end

CALayer+UIColor.m

#  import "CALayer+UIColor.h"

@implementation CALayer (UIColor)

- (void)setBorderUIColor:(UIColor*)color {
    self.borderColor = color.CGColor;
}

- (UIColor*)borderUIColor {
    return [UIColor colorWithCGColor:self.borderColor];
}

-(void)setContentsUIImage:(UIImage*)bgImage{
    self.contents=(__bridge id)(bgImage.CGImage);
}
-(UIImage*)contentsUIImage{
    return self.contents;
}
@end

这样只需要在IB中设置:

设置背景图片 设置borderColor

特别鸣谢:http://stackoverflow.com/a/27986696/3825920