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单独给NavigationBar上的两个NavigationItem设置图片显得比较麻烦，下面对创建单个UIBarButtonItem的过程进行封装。
UIBarButtonItem+Extension.m
#import "UIBarButtonItem+Extension.h" @implementation UIBarButtonItem (Extension) + (UIBarButtonItem *)itemWithTarget:(id)target action:(SEL)action image:(NSString *)image highlighImage:(NSString *)highImage { // 自定义左上角按钮 UIButton *backBtn = [UIButton buttonWithType:UIButtonTypeCustom]; [backBtn addTarget:target action:action forControlEvents:UIControlEventTouchUpInside]; // 设置图片 [backBtn setBackgroundImage:[UIImage imageNamed:image] forState:UIControlStateNormal]; [backBtn setBackgroundImage:[UIImage imageNamed:highImage] forState:UIControlStateHighlighted]; // 设置尺寸 backBtn.size = backBtn.currentBackgroundImage.size; return [[UIBarButtonItem alloc] initWithCustomView:backBtn]; } @end
最终效果：
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原文地址：http://www.cnblogs.com/yongdaimi/p/5961999.html
