Launching the Xamarin.Forms Android app takes 10 seconds

Question

Launching the Xamarin.Forms Android app takes 10 seconds

My Android application (created using Xamarin.Forms) takes about 10 seconds to start (both in debug mode and in Release mode) on a real device (Asus Zenfone 2). The splash screen is displayed for 8 seconds. Here is my journal where "extrony" is my application name. This assembly takes a very long time. Any help?

Android startup log

EDIT 1: It actually takes 10 seconds (I mentioned 8 by mistake, but now updated)

EDIT 2: On the emulator (I use the Android emulator for Visual Studio), the application starts faster, that is, within 4 seconds. However, on my real device (Asus Zenfone2), the time it takes is 10 seconds. Here is another thing that I see on the debug output when debugging on a real device (it does not appear if you are debugging the emulator), and loading these assemblies, ALONE takes ~ 6 seconds.

Android application is debugging.
Loaded assembly: /storage/emulated/0/Android/data/com.abdullah.extrony/files/.__override__/extrony.Droid.dll
Loaded assembly: /storage/emulated/0/Android/data/com.abdullah.extrony/files/.__override__/Acr.Support.Android.dll [External]
Loaded assembly: /storage/emulated/0/Android/data/com.abdullah.extrony/files/.__override__/Acr.UserDialogs.dll [External]
Loaded assembly: /storage/emulated/0/Android/data/com.abdullah.extrony/files/.__override__/Acr.UserDialogs.Interface.dll [External]
Loaded assembly: /storage/emulated/0/Android/data/com.abdullah.extrony/files/.__override__/AndHUD.dll [External]
Loaded assembly: /storage/emulated/0/Android/data/com.abdullah.extrony/files/.__override__/CarouselView.FormsPlugin.Abstractions.dll [External]
Loaded assembly: /storage/emulated/0/Android/data/com.abdullah.extrony/files/.__override__/CarouselView.FormsPlugin.Android.dll [External]
Loaded assembly: /storage/emulated/0/Android/data/com.abdullah.extrony/files/.__override__/FFImageLoading.dll [External]
Loaded assembly: /storage/emulated/0/Android/data/com.abdullah.extrony/files/.__override__/FFImageLoading.Forms.dll [External]
Loaded assembly: /storage/emulated/0/Android/data/com.abdullah.extrony/files/.__override__/FFImageLoading.Forms.Droid.dll [External]
Loaded assembly: /storage/emulated/0/Android/data/com.abdullah.extrony/files/.__override__/FFImageLoading.Platform.dll [External]
Loaded assembly: /storage/emulated/0/Android/data/com.abdullah.extrony/files/.__override__/FormsViewGroup.dll [External]
Loaded assembly: /storage/emulated/0/Android/data/com.abdullah.extrony/files/.__override__/HtmlAgilityPack.dll [External]
Loaded assembly: /storage/emulated/0/Android/data/com.abdullah.extrony/files/.__override__/Microsoft.Azure.Mobile.Analytics.Android.Bindings.dll [External]
Loaded assembly: /storage/emulated/0/Android/data/com.abdullah.extrony/files/.__override__/Microsoft.Azure.Mobile.Analytics.dll [External]
Loaded assembly: /storage/emulated/0/Android/data/com.abdullah.extrony/files/.__override__/Microsoft.Azure.Mobile.Android.Bindings.dll [External]
Loaded assembly: /storage/emulated/0/Android/data/com.abdullah.extrony/files/.__override__/Microsoft.Azure.Mobile.Crashes.Android.Bindings.dll [External]
Loaded assembly: /storage/emulated/0/Android/data/com.abdullah.extrony/files/.__override__/Microsoft.Azure.Mobile.Crashes.dll [External]
Loaded assembly: /storage/emulated/0/Android/data/com.abdullah.extrony/files/.__override__/Microsoft.Azure.Mobile.dll [External]
Loaded assembly: /storage/emulated/0/Android/data/com.abdullah.extrony/files/.__override__/Microsoft.Data.Sqlite.dll [External]
Loaded assembly: /storage/emulated/0/Android/data/com.abdullah.extrony/files/.__override__/Microsoft.EntityFrameworkCore.dll [External]
Loaded assembly: /storage/emulated/0/Android/data/com.abdullah.extrony/files/.__override__/Microsoft.EntityFrameworkCore.Relational.dll [External]
Loaded assembly: /storage/emulated/0/Android/data/com.abdullah.extrony/files/.__override__/Microsoft.EntityFrameworkCore.Sqlite.dll [External]
Loaded assembly: /storage/emulated/0/Android/data/com.abdullah.extrony/files/.__override__/Microsoft.Extensions.Caching.Abstractions.dll [External]
Loaded assembly: /storage/emulated/0/Android/data/com.abdullah.extrony/files/.__override__/Microsoft.Extensions.Caching.Memory.dll [External]
Loaded assembly: /storage/emulated/0/Android/data/com.abdullah.extrony/files/.__override__/Microsoft.Extensions.DependencyInjection.Abstractions.dll [External]
Loaded assembly: /storage/emulated/0/Android/data/com.abdullah.extrony/files/.__override__/Microsoft.Extensions.DependencyInjection.dll [External]
Loaded assembly: /storage/emulated/0/Android/data/com.abdullah.extrony/files/.__override__/Microsoft.Extensions.Logging.Abstractions.dll [External]
Loaded assembly: /storage/emulated/0/Android/data/com.abdullah.extrony/files/.__override__/Microsoft.Extensions.Logging.dll [External]
Loaded assembly: /storage/emulated/0/Android/data/com.abdullah.extrony/files/.__override__/Microsoft.Extensions.Options.dll [External]
Loaded assembly: /storage/emulated/0/Android/data/com.abdullah.extrony/files/.__override__/Microsoft.Extensions.Primitives.dll [External]
Loaded assembly: /storage/emulated/0/Android/data/com.abdullah.extrony/files/.__override__/ModernHttpClient.dll [External]
Loaded assembly: /storage/emulated/0/Android/data/com.abdullah.extrony/files/.__override__/Newtonsoft.Json.dll [External]
Loaded assembly: /storage/emulated/0/Android/data/com.abdullah.extrony/files/.__override__/OkHttp.dll [External]
Loaded assembly: /storage/emulated/0/Android/data/com.abdullah.extrony/files/.__override__/Plugin.Connectivity.Abstractions.dll [External]
Loaded assembly: /storage/emulated/0/Android/data/com.abdullah.extrony/files/.__override__/Plugin.Connectivity.dll [External]
Loaded assembly: /storage/emulated/0/Android/data/com.abdullah.extrony/files/.__override__/Plugin.CurrentActivity.dll [External]
Loaded assembly: /storage/emulated/0/Android/data/com.abdullah.extrony/files/.__override__/Plugin.Settings.Abstractions.dll [External]
Loaded assembly: /storage/emulated/0/Android/data/com.abdullah.extrony/files/.__override__/Plugin.Settings.dll [External]
Loaded assembly: /storage/emulated/0/Android/data/com.abdullah.extrony/files/.__override__/Plugin.Share.Abstractions.dll [External]
Loaded assembly: /storage/emulated/0/Android/data/com.abdullah.extrony/files/.__override__/Plugin.Share.dll [External]
Loaded assembly: /storage/emulated/0/Android/data/com.abdullah.extrony/files/.__override__/Remotion.Linq.dll [External]
Loaded assembly: /storage/emulated/0/Android/data/com.abdullah.extrony/files/.__override__/SgmlReaderDll.dll [External]
Loaded assembly: /storage/emulated/0/Android/data/com.abdullah.extrony/files/.__override__/Splat.dll [External]
Loaded assembly: /storage/emulated/0/Android/data/com.abdullah.extrony/files/.__override__/System.Collections.Immutable.dll [External]
Loaded assembly: /storage/emulated/0/Android/data/com.abdullah.extrony/files/.__override__/System.Diagnostics.DiagnosticSource.dll [External]
Loaded assembly: /storage/emulated/0/Android/data/com.abdullah.extrony/files/.__override__/System.Interactive.Async.dll [External]
Loaded assembly: /storage/emulated/0/Android/data/com.abdullah.extrony/files/.__override__/System.Runtime.CompilerServices.Unsafe.dll [External]
Loaded assembly: /storage/emulated/0/Android/data/com.abdullah.extrony/files/.__override__/Xamarin.Android.Support.Animated.Vector.Drawable.dll [External]
Loaded assembly: /storage/emulated/0/Android/data/com.abdullah.extrony/files/.__override__/Xamarin.Android.Support.CustomTabs.dll [External]
Loaded assembly: /storage/emulated/0/Android/data/com.abdullah.extrony/files/.__override__/Xamarin.Android.Support.Design.dll [External]
Loaded assembly: /storage/emulated/0/Android/data/com.abdullah.extrony/files/.__override__/Xamarin.Android.Support.v4.dll [External]
Loaded assembly: /storage/emulated/0/Android/data/com.abdullah.extrony/files/.__override__/Xamarin.Android.Support.v7.AppCompat.dll [External]
Loaded assembly: /storage/emulated/0/Android/data/com.abdullah.extrony/files/.__override__/Xamarin.Android.Support.v7.CardView.dll [External]
Loaded assembly: /storage/emulated/0/Android/data/com.abdullah.extrony/files/.__override__/Xamarin.Android.Support.v7.MediaRouter.dll [External]
Loaded assembly: /storage/emulated/0/Android/data/com.abdullah.extrony/files/.__override__/Xamarin.Android.Support.v7.RecyclerView.dll [External]
Loaded assembly: /storage/emulated/0/Android/data/com.abdullah.extrony/files/.__override__/Xamarin.Android.Support.Vector.Drawable.dll [External]
Loaded assembly: /storage/emulated/0/Android/data/com.abdullah.extrony/files/.__override__/Xamarin.Forms.Core.dll [External]
Loaded assembly: /storage/emulated/0/Android/data/com.abdullah.extrony/files/.__override__/Xamarin.Forms.Platform.Android.dll [External]
Loaded assembly: /storage/emulated/0/Android/data/com.abdullah.extrony/files/.__override__/Xamarin.Forms.Platform.dll [External]
Loaded assembly: /storage/emulated/0/Android/data/com.abdullah.extrony/files/.__override__/Xamarin.Forms.Xaml.dll [External]
Loaded assembly: /storage/emulated/0/Android/data/com.abdullah.extrony/files/.__override__/extrony.dll
Loaded assembly: /storage/emulated/0/Android/data/com.abdullah.extrony/files/.__override__/extrony.Data.dll
Loaded assembly: Mono.Android.dll [External]
Loaded assembly: Java.Interop.dll [External]
Loaded assembly: System.Runtime.dll [External]
Loaded assembly: System.Collections.Concurrent.dll [External]
Loaded assembly: System.Reflection.dll [External]
Loaded assembly: System.Threading.dll [External]
Loaded assembly: System.Diagnostics.Debug.dll [External]
Loaded assembly: System.dll [External]
Loaded assembly: System.Runtime.InteropServices.dll [External]
Loaded assembly: System.Collections.dll [External]
Loaded assembly: System.Linq.dll [External]
Loaded assembly: System.Core.dll [External]
Loaded assembly: System.Reflection.Extensions.dll [External]
Loaded assembly: MonoDroidConstructors [External]
Loaded assembly: System.ObjectModel.dll [External]
Loaded assembly: System.Threading.Tasks.dll [External]
Loaded assembly: System.Xml.ReaderWriter.dll [External]
Loaded assembly: System.Xml.dll [External]
Loaded assembly: System.IO.dll [External]
Loaded assembly: System.Runtime.Extensions.dll [External]
Loaded assembly: System.Linq.Expressions.dll [External]
Loaded assembly: System.Resources.ResourceManager.dll [External]
Loaded assembly: System.Globalization.dll [External]
Loaded assembly: System.Dynamic.Runtime.dll [External]
Loaded assembly: System.ComponentModel.dll [External]
Thread started: <Thread Pool> #2
Thread started: <Thread Pool> #3
Thread started: <Thread Pool> #4
Thread started: <Thread Pool> #5
Loaded assembly: System.Linq.Queryable.dll [External]
Loaded assembly: Anonymously Hosted DynamicMethods Assembly [External]
Loaded assembly: System.Data.Common.dll [External]
Loaded assembly: System.Data.dll [External]
Thread started: <Thread Pool> #6
Loaded assembly: System.Diagnostics.Tracing.dll [External]
Loaded assembly: System.ComponentModel.Annotations.dll [External]
Loaded assembly: System.ComponentModel.DataAnnotations.dll [External]

EDIT 3: Tested on different devices for each sentence received through comments. These are the results (from release build)

~ 8 to 10 seconds on Samsung Galaxy OnNXT
~ 6-7 seconds on Xiaomi Mi Max Prime
~ 4-5 seconds in a note of Redmi 3
~ 9.5 seconds on Asus Zenfone2

4: , , "context.Migrate() SingleOrDefault()" (EFCore) 9 . , ~ 3 .

5: db init (, ), Xamarin.Forms() 3 , , init . , , , Ebore db init . - ?

 protected override void OnResume()
    {
        base.OnResume();

        System.Threading.Tasks.Task.Run(() =>
        {
            App.DbFolder = System.Environment.GetFolderPath(System.Environment.SpecialFolder.Personal);
            App.InitializeDb();
        });

        StartActivity(typeof(MainActivity));

    }

?

+4

xamarin xamarin.forms

My Helper 01 . '17 2:46

2

Adam Pedley · Answer 1 · 2017-04-01T09:37:12+0000

4.5 , .

04-01 07:53:15.443 D/Mono    ( 1742): [0x9ac5e930] hill climbing, change max number of threads 2
04-01 07:53:15.445 W/art     ( 1742): JNI RegisterNativeMethods: attempt to register 0 native methods for md54ada4fbe4a5955f6151fa282d30cfc48.SelfDisposingBitmapDrawable
Resolved pending breakpoint at 'CleanUpReceiver.cs:16,1' to void extrony.Droid.Receivers.CleanUpReceiver.OnReceive (Android.Content.Context context, Android.Content.Intent intent) [0x00000].
04-01 07:53:20.059 D/Mono    ( 1742): DllImport searching in: '/system/lib/libsqlite.so' ('/system/lib/libsqlite.so').
04-01 07:53:20.059 D/Mono    ( 1742): Searching for 'sqlite3_column_count'.

, - , , App.xaml.cs. , EF Core.

, , App.xaml.cs , .

StopWatch , . stackoverflow, .

System.Diagnostics.Stopwatch s = new System.Diagnostics.Stopwatch();
s.Start();

// Code in here

s.Stop();
System.Diagnostics.Debug.WriteLine($"Elapsed Time: {s.ElapsedMilliseconds.ToString("N0")}");

G.Mich · Answer 2 · 2017-04-03T08:30:29+0000

, , , . Android.

http://www.c-sharpcorner.com/UploadFile/oussamaalrifai/xamarin-forms-android-workaround-for-splash-screen-with-lo/

Launching the Xamarin.Forms Android app takes 10 seconds

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