设置 Navigationbar 的相关属性

NavigationBar.swift

func setNavigationBarAttributes() {
         //设置NavgationBar title 字体 和 颜色
        var titleTextAttributes = Dictionary<String, Any>()
        titleTextAttributes[NSForegroundColorAttributeName] = UIColor.black
        titleTextAttributes[NSFontAttributeName] = UIFont.systemFont(ofSize: 16)
        self.navigationController?.navigationBar.titleTextAttributes = titleTextAttributes

        //设置NavgationBar的背景颜色
        self.navigationController?.navigationBar.barTintColor = UIColor.white

        //设置NavgationBar的Item的颜色
        self.navigationController?.navigationBar.tintColor = UIColor.black
}