TabbedPage和Content页面未显示 [英] TabbedPage and Content pages are not showing

问题描述

尽管我有使用C#的经验，但我对Xamarin和XML还是比较陌生.我已经在xml中创建了一个选项卡式页面，它根本没有显示 Main.axml :

I am fairly new to Xamarin and XML although I have experience with C#. I have created a tabbed page in xml and it isn't displaying at all Main.axml:

<TabbedPage xmlns="http://xamarin.com/schemas/2014/forms"
            xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
            xmlns:mypages="clr-namespace:MainActivity.Pages;assembly=MainActivity"
            x:Class="MainActivity.tabPages">
  <TabbedPage.Children>

    <mypages:Home />
    <mypages:AddLocation />

  </TabbedPage.Children>
</TabbedPage>

我有2个tabbedpage子级(主页"和添加位置")，我希望主页"是默认页面，尽管TabbedPage不会显示并且应用程序为空白.

I have 2 tabbedpage children (Home and Add Location) I want the Home page to be the default page, although even the TabbedPage won't show up and the app is blank.

Home.axml

<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             x:Class="MainActivity.ActualPage" Title="Home" BackgroundColor="Green">
  <ContentPage.Content>

    <Label Text="Hi there from Page 1" TextColor="White" Font="20"
        VerticalOptions="Center" HorizontalOptions="Center" />

  </ContentPage.Content>
</ContentPage>

MainActivity.cs:

using Android.App;
using Android.Widget;
using Android.OS;

namespace Xonify
{
    [Activity(Label = "App", MainLauncher = true, Icon = "@drawable/icon")]
    public class MainActivity : Activity
    {
        protected override void OnCreate(Bundle bundle)
        {
            base.OnCreate(bundle);
            SetContentView (Resource.Layout.Main);
        }
    }
}

项目的结构

谢谢

马特

推荐答案

您的MainActivity.cs未设置为支持Xamarin Forms，它会原生加载视图.将您的MainActivity.cs更改为此:

Your MainActivity.cs isn't setup to support Xamarin Forms, its loading the view natively. Change your MainActivity.cs to this:

使用Android.App； 使用Android.Widget; 使用Android.OS；

using Android.App; using Android.Widget; using Android.OS;

namespace Xonify
{
    [Activity(Label = "App", MainLauncher = true, Theme = "@style/MainTheme", Icon = "@drawable/icon")]
    public class MainActivity : Xamarin.Forms.Platform.Android.FormsAppCompatActivity
    {
        protected override void OnCreate(Bundle bundle)
        {
            base.OnCreate(bundle);
            Forms.Init(this, bundle);
            LoadApplication(new Xonify.PCL.App()); // Change to point to your App.xaml.cs class
        }
    }
}

您还需要在资​​源">值"文件夹中创建一个名为styles.xml的文件，然后在其中添加此主题.

You will also need to create a file call styles.xml in your Resources > Values folder and add this theme in.

<?xml version="1.0" encoding="utf-8" ?>
<resources>
  <style name="MainTheme" parent="Theme.AppCompat.Light.DarkActionBar">
     <!-- You can change options in here, or change the parent style -->
  </style>
</resources>

如果要查看示例，可以查看 https://github.com/exrin/ExrinSample/blob/master/Exrin-Sample/ExrinSample.Droid/MainActivity.cs

If you want to see an example you can have a look at https://github.com/exrin/ExrinSample/blob/master/Exrin-Sample/ExrinSample.Droid/MainActivity.cs

这篇关于TabbedPage和Content页面未显示的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！