As you all know, in android we often see a white screen between the splash screen and the first loaded app page (MainPage). I've tried to create a SplashActivity as explained here https://learn.microsoft.com/en-ca/xamarin/android/user-interface/splash-screen But it doesn't really work, even if i simulate a longer delay. So i ran several tests and this is what i found: When my MainPage has a simple xaml structure, i see no white screen When my MainPage content starts to become more complex, I see the white screen The white screen depends on the complexity of the xaml code and it doesn't matter how much code you have in the ViewModel In fact, I created a TestPage with just one label in xaml and no code in the ViewModel and i did not see the white screen I copied the xaml code from my MainPage to TestPage and still no code in the TestViewModel (so no bindings), and i did see the white screen So basically, even with no api calls, no code executing in the ViewModel, i see the white screen if the xaml contains a bunch of elements. Like I said, creating a dedicated SplashActivity did not help. Is there a solution? Thanks

How to eliminate the android white screen on startup?

Stesvis 1,041

As you all know, in android we often see a white screen between the splash screen and the first loaded app page (MainPage).
I've tried to create a SplashActivity as explained here
https://learn.microsoft.com/en-ca/xamarin/android/user-interface/splash-screen

But it doesn't really work, even if i simulate a longer delay.

So i ran several tests and this is what i found:

When my MainPage has a simple xaml structure, i see no white screen
When my MainPage content starts to become more complex, I see the white screen
The white screen depends on the complexity of the xaml code and it doesn't matter how much code you have in the ViewModel

In fact,

I created a TestPage with just one label in xaml and no code in the ViewModel and i did not see the white screen
I copied the xaml code from my MainPage to TestPage and still no code in the TestViewModel (so no bindings), and i did see the white screen

So basically, even with no api calls, no code executing in the ViewModel, i see the white screen if the xaml contains a bunch of elements.

Like I said, creating a dedicated SplashActivity did not help.
Is there a solution?

Thanks

JessieZhang-MSFT 7,706 Reputation points Microsoft Vendor

2021-03-16T06:34:47.963+00:00

if the xaml contains a bunch of elements

Hi @Stesvis , the Extensible Application Markup Language (XAML) is an XML-based language created by Microsoft as an alternative to programming code for instantiating and initializing objects, and organizing those objects in parent-child hierarchies. And the XAML information is parsed at build time to locate named objects, and again at runtime to instantiate and initialize objects, and to establish links between these objects and programming code. So, if the xaml contains a bunch of elements, this is bound to affect the loading speed of the APP page.
Stesvis 1,041 Reputation points

2021-03-16T14:38:16.7+00:00

Yes indeed, but the white screen doesn't show in iOS or when i navigate to other pages (even if they are as complex).
Is there a way to eliminate it?
JessieZhang-MSFT 7,706 Reputation points Microsoft Vendor

2021-03-17T09:06:50.933+00:00

We can optimize our code as much as possible. For this ,you can check document Improve Xamarin.Forms App Performance .