Splash screen too slow in Xamarin Android

Question

I'm creating an app that shows a splash screen and then creates the main activity. I'm following this tutorial that seems pretty straight forward: https://developer.xamarin.com/guides/android/user_interface/creating_a_splash_screen/

After implementing that I can successfully see the splash but there are some times (1 out of 20) that with an S5 I see the following screen:

Followed by the (right) splash (taken from the Emulator but just to make my point):

So my guess would be that sometimes Xamarin is taking to long to load the app therefore it has a delay showing the splash. Is there any way to prevent that?

UPDATE 1 I've followed the tutorial but I've removed the sleep for this:

Insights.Initialize ("<APP_KEY>", Application.Context);
StartActivity(typeof (MainActivity));

Did you set the correct image in the splash theme and set the theme for the activity, as in the tutorial? It looks like your activity doesn't have a windowBackground image. Have you checked on other versions of Android? — dylansturg
Yes I've set everything like the tutorial and 19 in 20 it looks good is just 1 out of 20 that shows the first screen for less than a second and then shows the second one with the right layout. — Federico M. Rinaldi
Possible duplicate of Xamarin Splash screen example does not work in landscape mode on a phone. How to fix it? — matthewrdev
@FedericoM.Rinaldi ,i think you facing OOM IN bitmap handling.Goto Output window ,see log ,anyway samusing devices going to hell in few years ,i was face the same issue in my — Jagadeesh Govindaraj
@matthewrdev thanks for the reply but I'm not using the Sleep, I've updated my question — Federico M. Rinaldi

matthewrdev matthewrdev · Accepted Answer · 2015-11-19T03:06:24

The example invokes the Thread.Sleep(10000); on the UI thread... This will lock up the app and generate an ANR!

Fix it by backgrounding the sleep and then triggering the next activity:

namespace SplashScreen
{
    using System.Threading;

    using Android.App;
    using Android.OS;

    [Activity(Theme = "@style/Theme.Splash", MainLauncher = true, NoHistory = true)]
    public class SplashActivity : Activity
    {
        protected override void OnCreate(Bundle bundle)
        {
            base.OnCreate(bundle);

            Task.Run (() => {
                Thread.Sleep (10000); // Simulate a long loading process on app startup.
                RunOnUiThread (() => { 
                    StartActivity (typeof(Activity1));
                });
            });
        }
    }
}

Splash screen too slow in Xamarin Android

2 Answers