c# - NavigationController 颜色和左键

Question

我正在尝试制作我的第一个基于表格的应用程序。但是它不会改变导航栏上标题的颜色。

我试过这段代码，但它似乎不起作用:

this.NavigationController.NavigationItem.TitleView.TintColor = UIColor.White;

我还制作了一个 LeftBarButtonItem，但是我看不到它，但是当点击它应该在的地方时，它确实做了它应该做的事..

    this.NavigationController.NavigationItem.SetHidesBackButton (true, false);
    this.NavigationController.NavigationItem.LeftBarButtonItem = new UIBarButtonItem ();
    this.NavigationController.NavigationItem.LeftBarButtonItem.Style = UIBarButtonItemStyle.Plain;
    this.NavigationController.NavigationItem.LeftBarButtonItem.TintColor = UIColor.White;
    this.NavigationController.NavigationItem.LeftBarButtonItem.Title = "Tilbage";
    this.NavigationController.NavigationItem.LeftBarButtonItem.Clicked += (object sender, EventArgs e) => 
    {
        this.PerformSegue("fromItem", this);
    };

Answer 1

要更改导航栏中标题的颜色，请查看 this answer .

对于导航栏中的自定义按钮，请查看 this answer

如果您在将 Objective-C 转换为 C# 时遇到任何问题，请发表评论。

编辑

在 ViewController 的 ViewDidLoad 中添加:

// to change the appearance of the top navigation bar title
UITextAttributes attributes = new UITextAttributes();
    // set custom text color
attributes.TextColor = UIColor.FromRGB(255, 122, 122);
attributes.Font = UIFont.BoldSystemFontOfSize(20);
attributes.TextShadowColor = UIColor.FromRGBA(255, 255, 255, 128);
attributes.TextShadowOffset = new UIOffset(2, -2);

// to add buttons to navigation bar
UIBarButtonItem[] items = new UIBarButtonItem[]
{
    new UIBarButtonItem(
        NSBundle.MainBundle.LocalizedString("Tilbage", null),
        UIBarButtonItemStyle.Bordered,
        delegate(object sender, EventArgs e) {
            // do whatever you need
        Console.WriteLine("Custom button clicked!");
    })
};

NavigationController.NavigationBar.TintColor = UIColor.FromRGBA(255, 196, 196, 255);
NavigationController.NavigationBar.TopItem.Title = NSBundle.MainBundle.LocalizedString("LocalizedHeader", null);
// change appearance
NavigationController.NavigationBar.SetTitleTextAttributes(attributes);
// add buttons
NavigationItem.LeftBarButtonItems = items;