Xamarin Android背景上的启动画面两种颜色

如何解决Xamarin Android背景上的启动画面两种颜色

我需要显示一个初始屏幕，该屏幕将屏幕分为两种颜色，占50％。此外，当您将设备从纵向旋转到横向时，我需要保持此状态。如何实现这种布局？

肖像：

风景：

目前，我有以下代码，但是这里我有固定大小（ 440dp ），我需要一个具有百分比大小的解决方案：

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
  <item android:height="440dp" android:gravity="fill_horizontal|top">
    <color android:color="@color/yellow"/>
  </item>
  
  <item android:height="440dp" android:gravity="fill_horizontal|bottom">
    <color android:color="@color/red"/>
  </item>
</layer-list>

解决方法

您可以使用Layout来执行此操作，例如LinearLayout或AbsoluteLayout。

首先，创建新的布局名称Splash-layout.xml：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:background="#00ff00"/>
<LinearLayout
 android:layout_width="match_parent"
 android:layout_height="0dp"
 android:layout_weight="1"
 android:background="#0000ff"/>

 </LinearLayout>

然后创建splashActivity，使mainlauncher = true。

 [Activity(MainLauncher = true,Theme = "@style/Theme.AppCompat.Light.NoActionBar",NoHistory = true)]
public class SplashActivity : AppCompatActivity
{
    static readonly string TAG = "X:" + typeof (SplashActivity).Name;

    protected override void OnCreate(Bundle savedInstanceState)
    {
        base.OnCreate(savedInstanceState);
        Log.Debug(TAG,"SplashActivity.OnCreate");
        
        // Using Layout (green and blue)
        SetContentView(Resource.Layout.splash_layout);

        // Using a view,SplashView below,that draws its background (yellow and red)
        //SetContentView(new SplashView(this));

        Task startupWork = new Task(() => { SimulateStartup(); });
        startupWork.Start();
    }

    // Prevent the back button from canceling the startup process
    public override void OnBackPressed() { }

    // Simulates background work that happens behind the splash screen
    async void SimulateStartup ()
    {
        Log.Debug(TAG,"Performing some startup work that takes a bit of time.");
        await Task.Delay(8000); // Simulate a bit of startup work.
        Log.Debug(TAG,"Startup work is finished - starting MainActivity.");
        StartActivity(new Intent(Application.Context,typeof (MainActivity)));
    }
}