//必須要設置navigationBar的prefersLargeTitles屬性為YES才能夠顯示出大標題self.navigationController.navigationBar.prefersLargeTitles = YES;//樣式是navigationItem的枚舉 有三種typedef NS_ENUM(NSInteger, UINavigationItemLargeTitleDisplayMode) { /// 自動模式依賴上一個 item 的特性UINavigationItemLargeTitleDisplayModeAutomatic,/// 針對當前 item 總是啟用大標題特性UINavigationItemLargeTitleDisplayModeAlways,/// Never UINavigationItemLargeTitleDisplayModeNever,}self.navigationController.navigationItem.largeTitleDisplayMode = UINavigationItemLargeTitleDisplayModeAlways; //為大標題添加富文本屬性 [self.navigationController.navigationBar setLargeTitleTextAttributes:[NSDictionary dictionaryWithObjectsAndKeys:[UIColor redColor],NSForegroundColorAttributeName,[UIFont systemFontOfSize:20.f],NSFontAttributeName,nil]];