Failed to Deploy Android Xamarin Forms Application After Adding Splash Screen

Question

For a couple days I tied to implement the splash screen on Android Xamarin Forms Application, I tied many approaches but all failed in the same way, The application before adding the splash screen is working fine, After adding the splash screen i get this error message

3>------ Deploy started: Project: NoorAlEman.Android, Configuration: Debug Any CPU ------ 3>Error: Cancelled ========== Build: 2 succeeded, 0 failed, 0 up-to-date, 0 skipped ========== ========== Deploy: 0 succeeded, 1 failed, 0 skipped ==========

sometime the application run without showing the splash screen for one time only if i delete "bin" and "obj" folder and rebuild the solution and most of other time it keeps showing the same error message. I am sure about adding all files using visual studio 2019 interface, also all files have Build Action: AndroidResource Copy to output directory: Do not copy "Also i tried to make it as copy always" Custom tools: I tried to leave it empty and other times i set to "MSBuild:UpdateGeneratedFiles" Other thing i done is to set the MainLauncher to false in the manactivity.cs and setting it to true in the splashsctivity.cs I tried these tutorials and all ended up showing the same error

(1) https://docs.microsoft.com/en-us/xamarin/android/user-interface/splash-screen

(2) https://progrunning.net/best-way-to-create-a-splash-screen-in-xamarin-forms-android-project/

(3) http://ebubekirsezer.com/en/xamarin-forms-splash-screen/?unapproved=11607&moderation-hash=67d1307ecdd13ca8e5b0acceae43d22d#comment-11607

Please do you have any suggestion that might resolve this issue. Thank you in advance M. Mazin

Answer 1

What I did was to create a new activity, say SplashActivity with the following attributes [Activity(MainLauncher = true, Theme = "@style/MainTheme.Splash", NoHistory = true)] , where the Theme would be an image, or whatever you want your splashscreen to be. Then inside you just start the main activity of your application, something like this:

protected override void OnResume()
{
    base.OnResume();
    StartActivity(new Intent(Application.Context, typeof(MainActivity)));
}

Don't forget to remove the MainLauncher attribute from the MainActivity.

Hope it helps

Answer 2

For me the only solution was: -rebuilding the project -closing and reopening VS -disconnecting and reconnecting my mobile device

I don't know where this error comes from, and it's a real pain, but this way you can at least keep testing your app until there comes an update which fixes it.