Splash screen dispose/remove after loaded - xamarin

Question

I am launching a splash screen in my xamarin android application and what happens is the splash screen keeps appearing
on other pages as background.
Whatever I do it's there.
I have tried to "Finish" the activity,NoHistory=true but nothing ,keeps showing on other pages in the background.
Taken from
https://alexdunn.org/2017/02/07/creating-a-splash-page-for-xamarin-forms-android/
Any ideas why?
[Activity(Label = "MyApp",
Theme = "#style/MyTheme.Splash",
Icon = "#drawable/icon",
MainLauncher = true,
NoHistory = true,
ConfigurationChanges = ConfigChanges.ScreenSize | ConfigChanges.Orientation)]
public class MainActivity : global::Xamarin.Forms.Platform.Android.FormsAppCompatActivity
{
protected override void OnCreate(Bundle bundle)
{
TabLayoutResource = Resource.Layout.tabs;
ToolbarResource = Resource.Layout.toolbar;
base.OnCreate(bundle);
Xamarin.Forms.Forms.Init(this, bundle);
LoadApplication(new App(new AndroidInitializer()));
}
}
[Activity(
Theme = "#style/MyTheme.Splash",
MainLauncher = true,
NoHistory = true,
ScreenOrientation = ScreenOrientation.Portrait)]
public class SplashActivity : AppCompatActivity
{
public override void OnCreate(Bundle savedInstanceState, PersistableBundle persistentState)
{
base.OnCreate(savedInstanceState, persistentState);
}
protected override void OnResume()
{
base.OnResume();
var startUp = new Task(() =>
{
var intent = new Intent(this, typeof(MainActivity));
StartActivity(intent);
});
startUp.ContinueWith(t => Finish());
startUp.Start();
}
<style name="MyTheme.Splash" parent ="Theme.AppCompat.Light">
<item name="android:windowBackground">#drawable/splash_screen</item>
<item name="windowActionBar">false</item>
<item name="windowNoTitle">true</item>
</style>

Answer 1

This is caused by Theme = "#style/MyTheme.Splash". Both activities use the same theme.
Create a different theme for the other activities.
<style name="MyTheme.Main" parent ="Theme.AppCompat.Light">
<item name="windowActionBar">false</item>
<item name="windowNoTitle">true</item>
</style>
Change the theme in Activity:
[Activity(
Theme = "#style/MyTheme.Main",
MainLauncher = true,
NoHistory = true,
ScreenOrientation = ScreenOrientation.Portrait)]
public class SplashActivity : AppCompatActivity
{
public override void OnCreate(Bundle savedInstanceState, PersistableBundle persistentState)
{
base.OnCreate(savedInstanceState, persistentState);
}
}

Answer 2

Another solution instead of creating a new theme is to set a background color in the layout file for the parent view in every activity that isn't the SplashScreen activity.

Answer 3

Your problem is mainly caused by two activities using the same theme.
In the "MainActivity" change the theme from "#style/MyTheme.Splash" to "#style/MainTheme", this will make the main activity use the default theme.