为UIButtonBarItem创建分类

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#import "UIBarButtonItem+Extension.h"

@implementation UIBarButtonItem (Extension)

+(UIBarButtonItem *)itemWithImageName:(NSString *)ImageName highImageName:(NSString *)highImageName target:(id)target action:(SEL)action{

    UIButton *btn=[[UIButton alloc] init];

          [btn setBackgroundImage:[UIImage imageNamed:ImageName] forState:UIControlStateNormal];

          [btn setBackgroundImage:[UIImage imageNamed:highImageName] forState:UIControlStateHighlighted];

    btn.frame=CGRectMake(0, 0, btn.currentBackgroundImage.size.width, btn.currentBackgroundImage.size.height);

    [btn addTarget:target action:action forControlEvents:UIControlEventTouchUpInside];

          return [[UIBarButtonItem alloc]initWithCustomView:btn];

}

@end

为UIButtonBarItem创建分类

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原文地址：http://www.cnblogs.com/zhibin/p/4156656.html