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Created attachment 22363 [details]
I added a Task.Delay(1000) to simulate a delay in launching the Forms Screen. If you remove this, there is no blank screen before loading the main forms page is loaded.
It seems to be if OnCreate is async and takes too long loading, you get a blank screen before the application loads.
If I remove "async" and run everything sync it works.
Xamarin Forms: 22.214.171.124
=== Visual Studio Enterprise 2017 for Mac ===
Version 7.0 (build 3146)
Installation UUID: 92386895-40cc-4380-bd33-d471ee0a8590
Mono 126.96.36.199 (2017-02/9667aa6) (64-bit)
GTK+ 2.24.23 (Raleigh theme)
Package version: 500000100
=== NuGet ===
=== .NET Core ===
Runtime: Not installed
SDK: Not installed
MSBuild SDKs: /Library/Frameworks/Mono.framework/Versions/4.8.1/lib/mono/msbuild/15.0/bin/Sdks
=== Xamarin.Profiler ===
Location: /Applications/Xamarin Profiler.app/Contents/MacOS/Xamarin Profiler
=== Apple Developer Tools ===
Xcode 8.2.1 (11766.1)
=== Xamarin.Android ===
Version: 188.8.131.52 (Visual Studio Enterprise)
Android SDK: /Users/mccorma/Library/Developer/Xamarin/android-sdk-macosx
Supported Android versions:
4.0.3 (API level 15)
4.1 (API level 16)
4.2 (API level 17)
4.3 (API level 18)
4.4 (API level 19)
4.4.87 (API level 20)
5.0 (API level 21)
5.1 (API level 22)
6.0 (API level 23)
7.0 (API level 24)
7.1 (API level 25)
SDK Tools Version: 26.0.2
SDK Platform Tools Version: 25.0.5
SDK Build Tools Version: 25.0.3
Java SDK: /usr
java version "1.8.0_91"
Java(TM) SE Runtime Environment (build 1.8.0_91-b14)
Java HotSpot(TM) 64-Bit Server VM (build 25.91-b14, mixed mode)
Android Designer EPL code available here:
=== Xamarin Inspector ===
=== Xamarin.Mac ===
Version: 184.108.40.206 (Visual Studio Enterprise)
=== Xamarin.iOS ===
Version: 10.10.0.33 (Visual Studio Enterprise)
Build date: 2017-05-05 18:11:38-0400
=== Build Information ===
Release ID: 700003146
Git revision: 7553fda2e327d15807298d444007896e5b975dba
Build date: 2017-05-09 12:12:36-04
Xamarin addins: c3d580752be79fc902422f1d55d1cdc2d8b98799
Build lane: monodevelop-lion-d15-2
=== Operating System ===
Mac OS X 10.11.6
Darwin 15.6.0 Darwin Kernel Version 15.6.0
Tue Apr 11 16:00:51 PDT 2017
Also occurs against the nightly build.
Can you put your delay in SplashActivity instead?
protected override async void OnResume ()
await Task.Delay(10000); // for 10 secs
I'm not sure why it's not working for MainActivity.
I went to all sync. Reported it because it was a bug.