UINavigationItem

如何修改导航栏的内容


导航栏的内容由栈顶控制器的navigationItem属性决定

UINavigationItem有以下属性影响着导航栏的内容
左上角的返回按钮
@property(nonatomic,retain) UIBarButtonItem *backBarButtonItem;
中间的标题视图
@property(nonatomic,retain) UIView          *titleView;
中间的标题文字
@property(nonatomic,copy)   NSString        *title;
左上角的视图
@property(nonatomic,retain) UIBarButtonItem *leftBarButtonItem;
UIBarButtonItem *rightBarButtonItem  右上角的视图
@property(nonatomic,retain) UIBarButtonItem *rightBarButtonItem;

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