Xamarin.ios 自定义选项卡页面颜色模式-Xamarin.Forms

有没有方法可以自定义

Xamarin.Forms.TabbedPage

对象上选项卡的颜色模式，使其不采用目标平台的默认外观

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我想更改字体颜色、背景和当前选定的选项卡颜色

Xamarin.Forms中没有内置方式，但在特定于平台的项目中，这非常容易做到。e、 g.通过在iOS上使用UIAppearance，我建议使用自定义渲染器

以下是iOS的一个示例：

[assembly: ExportRenderer(typeof(TabbedPage), typeof(TabbedPageRenderer))]
namespace MyApp.iOS
{
    public class TabbedPageRenderer : TabbedRenderer
    {
        protected override void OnElementChanged(VisualElementChangedEventArgs e)
        {
            base.OnElementChanged(e);

            TabBar.TintColor = UIColor.White;
            TabBar.BarTintColor = UIColor.Black;
            TabBar.BackgroundColor = UIColor.Gray;
        }
    }
}

在Xamarin.iOS项目中刚刚通过这个课程

对于Xamarin.Android，您还可以使用自定义渲染器来完成相同的任务。定制渲染器的Android实现看起来与iOS版本不同。

派对迟到了

现在，您可以如下更改选项卡式页面背景颜色

BarBackgroundColor=颜色。黑色

下面的链接可能会帮助你更多

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我可以通过以下操作在Android中实现这一点：

将当前.MainPage强制转换为选项卡页-这将允许您设置属性

((TabbedPage)Current.MainPage).BarBackgroundColor = Color.FromHex(settings.AppSecondaryColour);

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您应该能够以相同的方式更改其他属性。我还没有在IOS中测试过它。

在选项卡式页面中，为了更改xamarin表单中的标题颜色，而不是android native中的标题颜色

选项卡式页面代码：

 class MainPage : TabbedPage
    {
        LoginManager app;

        public MainPage(LoginManager ilm)
        {

            app = ilm;
            Title = "Infrastructure";
            Icon = "server.png";            


            this.BarTextColor = Color.White;
            this.BarBackgroundColor = Color.Blue;


            Children.Add(new AssetsView());
            Children.Add(new ServiceView());

            ToolbarItem tbi = new ToolbarItem() {
                Text = "Logout",
                Order = ToolbarItemOrder.Secondary,
                Priority = 0,       



            };

AssetView代码：

 public AssetView()
        {
            Title = "Assets";           



           this.BackgroundColor = Color.FromHex("D3D3D3");

            list = new AssetsList();

            searchbar = new SearchBar()
            {

                Placeholder = "Search",
                TextColor = Color.Black,
                BackgroundColor = Color.White,
                CancelButtonColor = Color.Black,
                PlaceholderColor = Color.Black


            };

  public class ServiceView : ContentPage
    {

        ServiceList list;
        SearchBar searchbar;


        public ServiceView()
        {
            Title = "Services";
            this.BackgroundColor = Color.FromHex("D3D3D3");

            list = new ServiceList();

            searchbar = new SearchBar()
            {
                Placeholder = "Search",
                TextColor = Color.Black,
                BackgroundColor = Color.White,
                CancelButtonColor = Color.Black,
                PlaceholderColor = Color.Black
            };

ServiceView代码：

 public AssetView()
        {
            Title = "Assets";           



           this.BackgroundColor = Color.FromHex("D3D3D3");

            list = new AssetsList();

            searchbar = new SearchBar()
            {

                Placeholder = "Search",
                TextColor = Color.Black,
                BackgroundColor = Color.White,
                CancelButtonColor = Color.Black,
                PlaceholderColor = Color.Black


            };

  public class ServiceView : ContentPage
    {

        ServiceList list;
        SearchBar searchbar;


        public ServiceView()
        {
            Title = "Services";
            this.BackgroundColor = Color.FromHex("D3D3D3");

            list = new ServiceList();

            searchbar = new SearchBar()
            {
                Placeholder = "Search",
                TextColor = Color.Black,
                BackgroundColor = Color.White,
                CancelButtonColor = Color.Black,
                PlaceholderColor = Color.Black
            };

---

您可以这样做：

<TabbedPage xmlns="http://xamarin.com/schemas/2014/forms"
            xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
            xmlns:d="http://xamarin.com/schemas/2014/forms/design"
            xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
            mc:Ignorable="d"
            xmlns:views="clr-namespace:SilCoyLuhn.Views"
            x:Class="SilCoyLuhn.Views.MainPage"
            BarBackgroundColor="{StaticResource Primary}"
            BarTextColor="{StaticResource LightTextColor}">

    <TabbedPage.Resources>
        <ResourceDictionary>
            <Color x:Key="Primary">#9DD69F</Color>
            <Color x:Key="Accent">#E1F4E0</Color>
            <Color x:Key="LightTextColor">#999999</Color>
        </ResourceDictionary>
        </TabbedPage.Resources>
</TabbedPage>

#9DD69F
#E1F4E0
#999999

---

在

中，我将静态资源定义为

BarBackgroundColor

和

BarTextColor

如何为Android实现这一点？