iOS中导航栏的一些知识点

// 导航栏和状态栏的背景色
navigationController?.navigationBar.barTintColor = UIColor.cyan;
// 导航栏的前景色
navigationController?.navigationBar.tintColor = UIColor.orange;
//  导航栏标题的富文本属性
navigationController?.navigationBar.titleTextAttributes = {"":""};

对所有的页面的同一个导航栏属性设置

navigationItem.leftBarButtonItem
navigationItem.leftBarButtonItems
navigationItem.rightBarButtonItem
navigationItem.rightBarButtonItems

self.navigationItem.backBarButtonItem = UIBarButtonItem(title: "你妹的返回按钮", style: UIBarButtonItemStyle.done, target: nil, action: nil);
navigationController?.pushViewController(nextVC, animated: true);

只对一个页面有效