System.DllNotFoundException: libRuntimeCoreNet

[PetrPokorny2]

We have Xamarin android app that uses ArcGIS SDK for Xamarin

After the app is installed on the device and I try to lauch it, I get the following exception:

Xamarin caused by: android.runtime.JavaProxyThrowable: System.DllNotFoundException: libRuntimeCoreNet at (wrapper managed-to-native) RuntimeCoreNet.GeneratedWrappers.CoreArcGISRuntimeEnvironment:CoreRT_ArcGISRuntimeEnvironment_enableBreakOnException (bool,intptr&)
at RuntimeCoreNet.GeneratedWrappers.CoreArcGISRuntimeEnvironment.EnableBreakOnException (System.Boolean enable) [0x00000] in :0
at Esri.ArcGISRuntime.ArcGISRuntimeEnvironment.Initialize () [0x00035] in :0
at Esri.ArcGISRuntime.ArcGISRuntimeEnvironment.SetLicense (System.String licenseKey) [0x00009] in :0
at NeoTreks.PlowOps.Android.Activities.MainActivity.OnCreate (Android.OS.Bundle savedInstanceState) [0x0003a] in <2e8073a2350242dc8c655650b4525319>:0
at Android.App.Activity.n_OnCreate_Landroid_os_Bundle_ (System.IntPtr jnienv, System.IntPtr native__this, System.IntPtr native_savedInstanceState) [0x0000f] in <3db0c94344514ae1a2cf0f64cb1a487a>:0
at (wrapper dynamic-method) System.Object:cd243ea0-e72b-4ef1-afd9-336733c9c36a (intptr,intptr,intptr)
at md515cc6cdff08daa7d20d96887e3190398.MainActivity.n_onCreate(Native Method)
at md515cc6cdff08daa7d20d96887e3190398.MainActivity.onCreate(MainActivity.java:35)
at android.app.Activity.performCreate(Activity.java:5993)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1105)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2268)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2375)
at android.app.ActivityThread.access$900(ActivityThread.java:147)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1283)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5254)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:910)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:705)

Does anyone know what is causing this exception and how to solve it?

We are using Esri.ArcGISRuntime.Xamarin.Android, version 100.2.0

[dotMorten_esri]

This file should automatically be deployed when deploying the app. It looks like our native library is not getting deployed. Is there any chance you could share a sample that reproduces the problem? I wonder if there's some project setting that is preventing it from happening.

[DreadKnight]

I have the same problem with Xamarin Forms (v 2.5.0.280555). There're 2 ways that this error will occur (v100.2.1).

1: Normal Cross Platform Project. If I change Android MainActivity:

- Change FormsAppCompatActivity to FormsApplicationActivity (it is needed in case to show better GUI in master detail page below)

- Comment out TabLayoutResource and ToolbarResource

- Remove: Theme = "@style/MainTheme"

2: When using Master Detail Page - It run normally if the map run on the first Navigation Page (default detail page)

But if I put the map on another Detail Page and load later or on the Detail Page has a button to show map. It give the error libRuntimeCoreNet not found

The Xaml and code is from the default MasterDetaiPage and this tutorial page: ArcGIS map image layer (URL)—ArcGIS Runtime SDK for .NET Samples | ArcGIS for Developers 

Any suggestion to fix this problem?

[dotMorten_esri]

Is your device running an Android version older than Level 18?

Could you try in the Application constructor and add the following line:

    Java.Lang.JavaSystem.LoadLibrary("runtimecore");

[PetrPokorny2]

I will try to create a sample later if I will have time. In the end we solved the problem by downgrading back to version 100.1.0 which does not have this problem.

[dotMorten_esri]

PetrPokorny‌ Did you try my suggestion with the LoadLibrary call? Also could you share some details about the device you're using (device type, OS, version etc)

[PetrPokorny2]

Hi Morten - I just done the test - upgraded to  SDK 100.2.1 and I added call Java.Lang.JavaSystem.LoadLibrary("runtimecore"); to Application constructor and it works. Without the call in constructor, I get the exception mentioned above.

This is happening on real device - Xiaomi Mi2s, Android 5.0.2, we use target framework 8.0 (oreo) and minimum API level Android 5.0 (Api level 21)

I never had this problem on iOS or Android emulator.

Thank you!

Petr

[dotMorten_esri]

Thank you for confirming this resolves your issue. We'll try and have this automatically done in the next update.

I'm rather surprised this is an issue on a level 21 device, as this doesn't really match the documentation that covers this issue, and we haven't seen that issue internally either.