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    <title>topic Re: Xamarin Forms App Crash on Android in .NET Maps SDK Questions</title>
    <link>https://community.esri.com/t5/net-maps-sdk-questions/xamarin-forms-app-crash-on-android/m-p/648777#M8090</link>
    <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;P&gt;It looks like MapView.AddView is being called, which is explicitly disallowed. &amp;nbsp;Is the source code in your app making this call? &amp;nbsp;Or is it somehow being invoked otherwise? &amp;nbsp;The call stack suggests that some component named "&lt;SPAN style="background-color: #ffffff;"&gt;com.testfairy" might be the culprit.&lt;/SPAN&gt;&lt;/P&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
    <pubDate>Mon, 15 May 2017 18:59:26 GMT</pubDate>
    <dc:creator>RichZwaap</dc:creator>
    <dc:date>2017-05-15T18:59:26Z</dc:date>
    <item>
      <title>Xamarin Forms App Crash on Android</title>
      <link>https://community.esri.com/t5/net-maps-sdk-questions/xamarin-forms-app-crash-on-android/m-p/648776#M8089</link>
      <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;P style="background-color: #ffffff; border: 0px;"&gt;I just upgraded some of the Android components on my PC, specifically installing the 7.0 and 7.1.1 SDK platforms and the latest Android SDK Tools and platforms tools. &amp;nbsp;My application still works fine when I debug directly to my Android device from Visual Studio, but when I try to deploy an APK to my device from some other means the app crashes with the following messages. &amp;nbsp;The interesting stuff is at the end and seems to be related to the Esri API.&lt;/P&gt;&lt;P style="background-color: #ffffff; border: 0px;"&gt;&amp;nbsp;&lt;/P&gt;&lt;P style="background-color: #ffffff; border: 0px;"&gt;Is there a workaround to this or do I need to revert back to my Android setup prior to the upgrades I just performed? &amp;nbsp;Any help is appreciated ...&lt;/P&gt;&lt;P style="background-color: #ffffff; border: 0px;"&gt;&lt;/P&gt;&lt;P style="background-color: #ffffff; border: 0px;"&gt;00:00 W/monodroid: Calling into managed runtime init&lt;BR /&gt;00:00 E/SELinux: [DEBUG] get_category: variable seinfo: default sensitivity: NULL, cateogry: NULL&lt;BR /&gt;00:00 W/monodroid-debug: Not starting the debugger as the timeout value has been reached; current-time: 1494685025 timeout: 1494684196&lt;BR /&gt;00:00 W/monodroid-gc: GREF GC Threshold: 46080&lt;BR /&gt;00:00 W/monodroid: Trying to load sgen from: /data/app/com.epochsg.epochfield-1/lib/arm/libmonosgen-2.0.so&lt;BR /&gt;00:00 D/ActivityThread: Added TimaKeyStore provider&lt;BR /&gt;00:00 D/TimaKeyStoreProvider: TimaSignature is unavailable&lt;BR /&gt;00:00 W/ResourceType: Failure getting entry for 0x01080ac2 (t=7 e=2754) (error -75)&lt;BR /&gt;00:00 D/SensorManager: registerListener :: 0, BMI055 Accelerometer Sensor, 200000, 0, &lt;BR /&gt;00:00 D/PhoneWindow: *FMB* isFloatingMenuEnabled return false&lt;BR /&gt;00:00 D/PhoneWindow: *FMB* isFloatingMenuEnabled mFloatingMenuBtn : null&lt;BR /&gt;00:00 I/OpenGLRenderer: HWUI protection enabled for context , &amp;amp;this =0x97c22088 ,&amp;amp;mEglDisplay = 1 , &amp;amp;mEglConfig = -1748757580 &lt;BR /&gt;00:00 D/PhoneWindow: *FMB* installDecor flags : -2139029248&lt;BR /&gt;00:00 I/OpenGLRenderer: Initialized EGL, version 1.4&lt;BR /&gt;00:00 I/: PLATFORM VERSION : JB-MR-2&lt;BR /&gt;00:00 D/PhoneWindow: *FMB* installDecor flags : 8388610&lt;BR /&gt;00:00 D/PhoneWindow: *FMB* installDecor mIsFloating : false&lt;BR /&gt;00:00 W/ResourceType: Failure getting entry for 0x01080ac2 (t=7 e=2754) (error -75)&lt;BR /&gt;00:00 D/PhoneWindow: *FMB* installDecor mIsFloating : true&lt;BR /&gt;00:00 D/OpenGLRenderer: Render dirty regions requested: true&lt;BR /&gt;00:00 D/Atlas: Validating map...&lt;BR /&gt;00:00 W/System.err: remove failed: ENOENT (No such file or directory) : /data/data/com.epochsg.epochfield/shared_prefs/com.testfairy.sdk.activities.WelcomeActivity.xml.bak&lt;BR /&gt;00:00 D/ViewRootImpl: ViewPostImeInputStage ACTION_DOWN&lt;BR /&gt;00:00 D/OpenGLRenderer: endAllStagingAnimators on 0x97eac500 (RippleDrawable) with handle 0x97c074e0&lt;BR /&gt;00:00 D/OpenGLRenderer: Enabling debug mode 0&lt;BR /&gt;00:00 D/PhoneWindow: *FMB* isFloatingMenuEnabled mFloatingMenuBtn : null&lt;BR /&gt;00:00 D/OpenGLRenderer: Get maximum texture size. GL_MAX_TEXTURE_SIZE is 8192&lt;BR /&gt;00:00 I/Timeline: Timeline: Activity_idle id: android.os.BinderProxy@1806b9b4 time:2737476&lt;BR /&gt;00:00 D/PhoneWindow: *FMB* isFloatingMenuEnabled return false&lt;BR /&gt;00:00 I/Timeline: Timeline: Activity_launch_request id:com.epochsg.epochfield time:2739600&lt;BR /&gt;00:00 E/ViewRootImpl: sendUserActionEvent() mView == null&lt;BR /&gt;00:00 W/ResourceType: Failure getting entry for 0x01080ac2 (t=7 e=2754) (error -75)&lt;BR /&gt;00:00 I/System.out: Thread-2125(ApacheHTTPLog):Reading from variable values from setDefaultValuesToVariables&lt;BR /&gt;00:00 I/System.out: Thread-2125(ApacheHTTPLog):isSBSettingEnabled false&lt;BR /&gt;00:00 I/System.out: Thread-2125(ApacheHTTPLog):SMARTBONDING_ENABLED is false&lt;BR /&gt;00:00 I/System.out: Thread-2125(ApacheHTTPLog):isShipBuild true&lt;BR /&gt;00:00 I/System.out: Thread-2125(ApacheHTTPLog):SmartBonding Enabling is false, SHIP_BUILD is true, log to file is false, DBG is false&lt;BR /&gt;00:00 I/Timeline: Timeline: Activity_launch_request id:com.epochsg.epochfield time:2739998&lt;BR /&gt;00:00 D/PhoneWindow: *FMB* installDecor mIsFloating : false&lt;BR /&gt;00:00 D/PhoneWindow: *FMB* installDecor flags : 8454402&lt;BR /&gt;00:00 D/PhoneWindow: *FMB* isFloatingMenuEnabled mFloatingMenuBtn : null&lt;BR /&gt;00:00 D/PhoneWindow: *FMB* isFloatingMenuEnabled return false&lt;BR /&gt;00:00 E/ViewSystem: ViewRootImpl #2 Surface is not valid.&lt;BR /&gt;00:00 W/ResourceType: Failure getting entry for 0x01080ac2 (t=7 e=2754) (error -75)&lt;BR /&gt;00:00 D/PhoneWindow: *FMB* installDecor flags : -2139029248&lt;BR /&gt;00:00 D/PhoneWindow: *FMB* installDecor mIsFloating : false&lt;BR /&gt;00:00 W/art: JNI RegisterNativeMethods: attempt to register 0 native methods for md5d520a45cae5c9d1f41fe05fc2c64048d.CompassCalibration&lt;BR /&gt;00:01 I/System.out: pool-1-thread-1 calls detatch()&lt;BR /&gt;00:01 W/art: JNI RegisterNativeMethods: attempt to register 0 native methods for md561e589923a13617eb075fd6f9859def2.UserInteractionHandler&lt;BR /&gt;00:02 I/art: Explicit concurrent mark sweep GC freed 14998(815KB) AllocSpace objects, 5(102KB) LOS objects, 40% free, 13MB/21MB, paused 317us total 17.907ms&lt;BR /&gt;00:02 I/mono-stdout: Binding: 'ItemTappedCommand' property not found on 'EFCloud.ViewModels.CircuitFilterToolViewModel', target property: 'EFCloud.Behaviors.EventToCommandBehavior.Command'&lt;BR /&gt;00:03 I/mono-stdout: Binding: 'Image' property not found on 'EFCloud.ViewModels.InspectionsToolViewModel', target property: 'EFCloud.Components.ToolButtonControl.Source'&lt;BR /&gt;00:03 I/mono-stdout: Binding: Xamarin.Forms.FileImageSource can not be converted to type 'System.String'&lt;BR /&gt;00:03 I/mono-stdout: Binding: 'CompleteInspectionPointEnabled' property not found on 'EFCloud.ViewModels.InspectionsToolViewModel', target property: 'EFCloud.Components.ToolButtonControl.ToolEnabled'&lt;BR /&gt;00:03 I/mono-stdout: Binding: 'ObjectId' property not found on 'EFCloud.ViewModels.InspectionsToolViewModel', target property: 'EFCloud.Components.ToolButtonControl.CommandParameter'&lt;BR /&gt;00:03 I/mono-stdout: Binding: 'ItemTappedCommand' property not found on 'EFCloud.ViewModels.DownloadToolViewModel', target property: 'EFCloud.Behaviors.EventToCommandBehavior.Command'&lt;BR /&gt;00:03 I/mono-stdout: Binding: 'Image' property not found on 'EFCloud.ViewModels.MapPageViewModel', target property: 'EFCloud.Components.ToolButtonControl.Source'&lt;BR /&gt;00:03 I/mono-stdout: Binding: Xamarin.Forms.FileImageSource can not be converted to type 'System.String'&lt;BR /&gt;00:03 I/mono-stdout: Binding: 'NewItemCount' property not found on 'EFCloud.ViewModels.MapPageViewModel', target property: 'Xamarin.Forms.Label.Text'&lt;BR /&gt;00:03 I/mono-stdout: Binding: 'Equals(false)' property not found on 'False', target property: 'Xamarin.Forms.Image.IsVisible'&lt;BR /&gt;00:04 W/art: JNI RegisterNativeMethods: attempt to register 0 native methods for md5b60ffeb829f638581ab2bb9b1a7f4f3f.Platform_DefaultRenderer&lt;BR /&gt;00:04 W/art: JNI RegisterNativeMethods: attempt to register 0 native methods for md5b60ffeb829f638581ab2bb9b1a7f4f3f.ImageRenderer&lt;BR /&gt;00:04 W/art: JNI RegisterNativeMethods: attempt to register 0 native methods for md5b60ffeb829f638581ab2bb9b1a7f4f3f.LabelRenderer&lt;BR /&gt;00:04 W/art: JNI RegisterNativeMethods: attempt to register 0 native methods for md5efbefd3c8b9b9ae4c417cc780f376496.GeoViewRenderer&lt;BR /&gt;00:04 W/art: JNI RegisterNativeMethods: attempt to register 0 native methods for md5b60ffeb829f638581ab2bb9b1a7f4f3f.FrameRenderer&lt;BR /&gt;00:04 W/ResourceType: Failure getting entry for 0x01080ac2 (t=7 e=2754) (error -75)&lt;BR /&gt;00:04 W/ResourceType: Failure getting entry for 0x01080ac2 (t=7 e=2754) (error -75)&lt;BR /&gt;00:04 D/AbsListView: Get MotionRecognitionManager&lt;BR /&gt;00:04 W/ResourceType: Failure getting entry for 0x01080ac2 (t=7 e=2754) (error -75)&lt;BR /&gt;00:04 D/AbsListView: Get MotionRecognitionManager&lt;BR /&gt;00:04 W/ResourceType: Failure getting entry for 0x01080ac2 (t=7 e=2754) (error -75)&lt;BR /&gt;00:04 W/ResourceType: Failure getting entry for 0x01080ac2 (t=7 e=2754) (error -75)&lt;BR /&gt;00:04 D/AbsListView: Get MotionRecognitionManager&lt;BR /&gt;00:04 W/ResourceType: Failure getting entry for 0x01080ac2 (t=7 e=2754) (error -75)&lt;BR /&gt;00:04 W/ResourceType: Failure getting entry for 0x01080ac2 (t=7 e=2754) (error -75)&lt;BR /&gt;00:04 D/AbsListView: Get MotionRecognitionManager&lt;BR /&gt;00:04 W/ResourceType: Failure getting entry for 0x01080ac2 (t=7 e=2754) (error -75)&lt;BR /&gt;00:04 W/art: JNI RegisterNativeMethods: attempt to register 0 native methods for md5b60ffeb829f638581ab2bb9b1a7f4f3f.ActivityIndicatorRenderer&lt;BR /&gt;00:04 I/art: Explicit concurrent mark sweep GC freed 4424(247KB) AllocSpace objects, 0(0B) LOS objects, 39% free, 14MB/23MB, paused 344us total 13.414ms&lt;BR /&gt;00:04 D/AbsListView: Get MotionRecognitionManager&lt;BR /&gt;00:04 W/ResourceType: Failure getting entry for 0x01080ac2 (t=7 e=2754) (error -75)&lt;BR /&gt;00:04 W/ResourceType: Failure getting entry for 0x01080ac2 (t=7 e=2754) (error -75)&lt;BR /&gt;00:04 W/art: JNI RegisterNativeMethods: attempt to register 0 native methods for md5b60ffeb829f638581ab2bb9b1a7f4f3f.PickerRenderer&lt;BR /&gt;00:04 D/AbsListView: Get MotionRecognitionManager&lt;BR /&gt;00:04 W/ResourceType: Failure getting entry for 0x01080ac2 (t=7 e=2754) (error -75)&lt;BR /&gt;00:04 W/ResourceType: Failure getting entry for 0x01080ac2 (t=7 e=2754) (error -75)&lt;BR /&gt;00:04 W/ResourceType: Failure getting entry for 0x01080ac2 (t=7 e=2754) (error -75)&lt;BR /&gt;00:04 W/ResourceType: Failure getting entry for 0x01080ac2 (t=7 e=2754) (error -75)&lt;BR /&gt;00:04 D/AbsListView: Get MotionRecognitionManager&lt;BR /&gt;00:04 D/AbsListView: Get MotionRecognitionManager&lt;BR /&gt;00:04 W/ResourceType: Failure getting entry for 0x01080ac2 (t=7 e=2754) (error -75)&lt;BR /&gt;00:04 W/ResourceType: Failure getting entry for 0x01080ac2 (t=7 e=2754) (error -75)&lt;BR /&gt;00:04 W/ResourceType: Failure getting entry for 0x01080ac2 (t=7 e=2754) (error -75)&lt;BR /&gt;00:04 D/AbsListView: Get MotionRecognitionManager&lt;BR /&gt;00:04 W/ResourceType: Failure getting entry for 0x01080ac2 (t=7 e=2754) (error -75)&lt;BR /&gt;00:04 W/ResourceType: Failure getting entry for 0x01080ac2 (t=7 e=2754) (error -75)&lt;BR /&gt;00:04 D/AbsListView: Get MotionRecognitionManager&lt;BR /&gt;00:04 W/ResourceType: Failure getting entry for 0x01080ac2 (t=7 e=2754) (error -75)&lt;BR /&gt;00:04 W/ResourceType: Failure getting entry for 0x01080ac2 (t=7 e=2754) (error -75)&lt;BR /&gt;00:04 D/AbsListView: Get MotionRecognitionManager&lt;BR /&gt;00:04 W/ResourceType: Failure getting entry for 0x01080ac2 (t=7 e=2754) (error -75)&lt;BR /&gt;00:04 W/ResourceType: Failure getting entry for 0x01080ac2 (t=7 e=2754) (error -75)&lt;BR /&gt;00:04 D/AbsListView: Get MotionRecognitionManager&lt;BR /&gt;00:04 W/ResourceType: Failure getting entry for 0x01080ac2 (t=7 e=2754) (error -75)&lt;BR /&gt;00:04 W/ResourceType: Failure getting entry for 0x01080ac2 (t=7 e=2754) (error -75)&lt;BR /&gt;00:04 W/ResourceType: Failure getting entry for 0x01080ac2 (t=7 e=2754) (error -75)&lt;BR /&gt;00:04 D/AbsListView: Get MotionRecognitionManager&lt;BR /&gt;00:04 W/ResourceType: Failure getting entry for 0x01080ac2 (t=7 e=2754) (error -75)&lt;BR /&gt;00:04 W/ResourceType: Failure getting entry for 0x01080ac2 (t=7 e=2754) (error -75)&lt;BR /&gt;00:04 D/AbsListView: Get MotionRecognitionManager&lt;BR /&gt;00:04 W/ResourceType: Failure getting entry for 0x01080ac2 (t=7 e=2754) (error -75)&lt;BR /&gt;00:04 D/AbsListView: Get MotionRecognitionManager&lt;BR /&gt;00:04 W/ResourceType: Failure getting entry for 0x01080ac2 (t=7 e=2754) (error -75)&lt;BR /&gt;00:04 W/ResourceType: Failure getting entry for 0x01080ac2 (t=7 e=2754) (error -75)&lt;BR /&gt;00:04 D/AbsListView: Get MotionRecognitionManager&lt;BR /&gt;00:04 W/ResourceType: Failure getting entry for 0x01080ac2 (t=7 e=2754) (error -75)&lt;BR /&gt;00:04 W/ResourceType: Failure getting entry for 0x01080ac2 (t=7 e=2754) (error -75)&lt;BR /&gt;00:04 D/AbsListView: Get MotionRecognitionManager&lt;BR /&gt;00:04 W/ResourceType: Failure getting entry for 0x01080ac2 (t=7 e=2754) (error -75)&lt;BR /&gt;00:04 D/AbsListView: Get MotionRecognitionManager&lt;BR /&gt;00:04 W/ResourceType: Failure getting entry for 0x01080ac2 (t=7 e=2754) (error -75)&lt;BR /&gt;00:04 W/ResourceType: Failure getting entry for 0x01080ac2 (t=7 e=2754) (error -75)&lt;BR /&gt;00:05 W/System.err: remove failed: ENOENT (No such file or directory) : /data/data/com.epochsg.epochfield/shared_prefs/testfairy.preferences.xml.bak&lt;BR /&gt;00:05 I/Choreographer: Skipped 84 frames! The application may be doing too much work on its main thread.&lt;BR /&gt;00:05 D/PhoneWindow: *FMB* isFloatingMenuEnabled mFloatingMenuBtn : null&lt;BR /&gt;00:05 D/PhoneWindow: *FMB* isFloatingMenuEnabled return false&lt;BR /&gt;00:05 I/mono-stdout: Binding: 'Equals(false)' property not found on 'True', target property: 'Xamarin.Forms.Image.IsVisible'&lt;BR /&gt;00:05 I/System.out: Thread-2138(ApacheHTTPLog):SMARTBONDING_ENABLED is false&lt;BR /&gt;00:05 I/System.out: Thread-2138(ApacheHTTPLog):SmartBonding Enabling is false, SHIP_BUILD is true, log to file is false, DBG is false&lt;BR /&gt;00:05 I/System.out: Thread-2138(ApacheHTTPLog):isShipBuild true&lt;BR /&gt;00:05 I/System.out: Thread-2138(ApacheHTTPLog):isSBSettingEnabled false&lt;BR /&gt;&lt;STRONG&gt;00:06 I/MonoDroid: UNHANDLED EXCEPTION:&lt;/STRONG&gt;&lt;BR /&gt;&lt;STRONG&gt;00:06 I/System.out: pool-2-thread-1 calls detatch()&lt;/STRONG&gt;&lt;BR /&gt;&lt;STRONG&gt;00:06 I/MonoDroid: at Android.Views.ViewGroup.n_AddView_Landroid_view_View_I (System.IntPtr jnienv, System.IntPtr native__this, System.IntPtr native_child, System.Int32 index) [0x00011] in &amp;lt;e990e46faeb94543b78f25dee3aed17e&amp;gt;:0 &lt;/STRONG&gt;&lt;BR /&gt;&lt;STRONG&gt;00:06 I/MonoDroid: at Esri.ArcGISRuntime.UI.Controls.MapView.AddView (Android.Views.View child, System.Int32 index) [0x00000] in &amp;lt;687a544c38e8410dbac0acfc0843ba7e&amp;gt;:0 &lt;/STRONG&gt;&lt;BR /&gt;&lt;STRONG&gt;00:06 I/MonoDroid: at Esri.ArcGISRuntime.UI.Controls.GeoView.AddView (Android.Views.View child, System.Int32 index) [0x00014] in &amp;lt;687a544c38e8410dbac0acfc0843ba7e&amp;gt;:0 &lt;/STRONG&gt;&lt;BR /&gt;&lt;STRONG&gt;00:06 I/MonoDroid: System.NotSupportedException: AddView is for internal use only&lt;/STRONG&gt;&lt;BR /&gt;&lt;STRONG&gt;00:06 I/MonoDroid: at (wrapper dynamic-method) System.Object:ec7a4659-3ab8-4d2d-930d-b041841bb258 (intptr,intptr,intptr,int)&lt;/STRONG&gt;&lt;BR /&gt;&lt;STRONG&gt;00:06 W/art: JNI RegisterNativeMethods: attempt to register 0 native methods for android.runtime.JavaProxyThrowable&lt;/STRONG&gt;&lt;BR /&gt;&lt;STRONG&gt;00:06 D/AndroidRuntime: Shutting down VM&lt;/STRONG&gt;&lt;BR /&gt;&lt;STRONG&gt;00:06 I/System.out: Thread-2142(ApacheHTTPLog):isSBSettingEnabled false&lt;/STRONG&gt;&lt;BR /&gt;&lt;STRONG&gt;00:06 I/System.out: Thread-2142(ApacheHTTPLog):SmartBonding Enabling is false, SHIP_BUILD is true, log to file is false, DBG is false&lt;/STRONG&gt;&lt;BR /&gt;&lt;STRONG&gt;00:06 I/System.out: Thread-2142(ApacheHTTPLog):SMARTBONDING_ENABLED is false&lt;/STRONG&gt;&lt;BR /&gt;&lt;STRONG&gt;00:06 I/System.out: Thread-2142(ApacheHTTPLog):isShipBuild true&lt;/STRONG&gt;&lt;BR /&gt;&lt;STRONG&gt;00:06 E/AndroidRuntime: FATAL EXCEPTION: main&lt;/STRONG&gt;&lt;BR /&gt;&lt;STRONG&gt;Process: com.epochsg.epochfield, PID: 19814&lt;/STRONG&gt;&lt;BR /&gt;&lt;STRONG&gt;java.lang.RuntimeException: java.lang.reflect.InvocationTargetException&lt;/STRONG&gt;&lt;BR /&gt;&lt;STRONG&gt; at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1194)&lt;/STRONG&gt;&lt;BR /&gt;&lt;STRONG&gt;Caused by: java.lang.reflect.InvocationTargetException&lt;/STRONG&gt;&lt;BR /&gt;&lt;STRONG&gt; at java.lang.reflect.Method.invoke(Native Method)&lt;/STRONG&gt;&lt;BR /&gt;&lt;STRONG&gt; at java.lang.reflect.Method.invoke(Method.java:372)&lt;/STRONG&gt;&lt;BR /&gt;&lt;STRONG&gt; at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1399)&lt;/STRONG&gt;&lt;BR /&gt;&lt;STRONG&gt; ... 1 more&lt;/STRONG&gt;&lt;BR /&gt;&lt;STRONG&gt;Caused by: android.runtime.JavaProxyThrowable: System.NotSupportedException: AddView is for internal use only&lt;/STRONG&gt;&lt;BR /&gt;&lt;STRONG&gt; at Esri.ArcGISRuntime.UI.Controls.GeoView.AddView (Android.Views.View child, System.Int32 index) [0x00014] in &amp;lt;687a544c38e8410dbac0acfc0843ba7e&amp;gt;:0 &lt;/STRONG&gt;&lt;BR /&gt;&lt;STRONG&gt; at Esri.ArcGISRuntime.UI.Controls.MapView.AddView (Android.Views.View child, System.Int32 index) [0x00000] in &amp;lt;687a544c38e8410dbac0acfc0843ba7e&amp;gt;:0 &lt;/STRONG&gt;&lt;BR /&gt;&lt;STRONG&gt; at Android.Views.ViewGroup.n_AddView_Landroid_view_View_I (System.IntPtr jnienv, System.IntPtr native__this, System.IntPtr native_child, System.Int32 index) [0x00011] in &amp;lt;e990e46faeb94543b78f25dee3aed17e&amp;gt;:0 &lt;/STRONG&gt;&lt;BR /&gt;&lt;STRONG&gt; at (wrapper dynamic-method) System.Object:ec7a4659-3ab8-4d2d-930d-b041841bb258 (intptr,intptr,intptr,int)&lt;/STRONG&gt;&lt;BR /&gt;&lt;STRONG&gt; at Esri.ArcGISRuntime.UI.MapView.n_addView(Native Method)&lt;/STRONG&gt;&lt;BR /&gt;&lt;STRONG&gt; at Esri.ArcGISRuntime.UI.MapView.addView(MapView.java:110)&lt;/STRONG&gt;&lt;BR /&gt; at com.testfairy.i.a(SourceFile:83)&lt;BR /&gt; at com.testfairy.i.a(SourceFile:333)&lt;BR /&gt; at com.testfairy.sdk.aa.run(SourceFile:2902)&lt;BR /&gt; at android.os.Handler.handleCallback(Handler.java:739)&lt;BR /&gt; at android.os.Handler.dispatchMessage(Handler.java:95)&lt;BR /&gt; at android.os.Looper.loop(Looper.java:145)&lt;BR /&gt; at android.app.ActivityThread.main(ActivityThread.java:6117)&lt;BR /&gt; ... 4 more&lt;BR /&gt;00:06 I/System.out: Thread-2145(ApacheHTTPLog):isShipBuild true&lt;BR /&gt;00:06 I/System.out: Thread-2145(ApacheHTTPLog):isSBSettingEnabled false&lt;BR /&gt;00:06 I/System.out: Thread-2145(ApacheHTTPLog):SMARTBONDING_ENABLED is false&lt;BR /&gt;00:06 I/System.out: Thread-2145(ApacheHTTPLog):SmartBonding Enabling is false, SHIP_BUILD is true, log to file is false, DBG is false&lt;BR /&gt;00:06 I/System.out: pool-4-thread-1 calls detatch()&lt;BR /&gt;00:07 I/System.out: Thread-2148(ApacheHTTPLog):isSBSettingEnabled false&lt;BR /&gt;00:07 I/System.out: Thread-2148(ApacheHTTPLog):SMARTBONDING_ENABLED is false&lt;BR /&gt;00:07 I/System.out: Thread-2148(ApacheHTTPLog):isShipBuild true&lt;BR /&gt;00:07 I/System.out: Thread-2148(ApacheHTTPLog):SmartBonding Enabling is false, SHIP_BUILD is true, log to file is false, DBG is false&lt;BR /&gt;00:07 I/System.out: pool-5-thread-1 calls detatch()&lt;BR /&gt;00:08 I/art: Explicit concurrent mark sweep GC freed 12538(723KB) AllocSpace objects, 1(14KB) LOS objects, 8% free, 82MB/90MB, paused 549us total 19.676ms&lt;BR /&gt;00:08 I/System.out: Thread-2156(ApacheHTTPLog):isSBSettingEnabled false&lt;BR /&gt;00:08 I/System.out: Thread-2156(ApacheHTTPLog):SMARTBONDING_ENABLED is false&lt;BR /&gt;00:08 I/System.out: Thread-2156(ApacheHTTPLog):isShipBuild true&lt;BR /&gt;00:08 I/System.out: Thread-2156(ApacheHTTPLog):SmartBonding Enabling is false, SHIP_BUILD is true, log to file is false, DBG is false&lt;BR /&gt;00:08 I/System.out: pool-6-thread-1 calls detatch()&lt;/P&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
      <pubDate>Sat, 13 May 2017 15:12:38 GMT</pubDate>
      <guid>https://community.esri.com/t5/net-maps-sdk-questions/xamarin-forms-app-crash-on-android/m-p/648776#M8089</guid>
      <dc:creator>AndyWright</dc:creator>
      <dc:date>2017-05-13T15:12:38Z</dc:date>
    </item>
    <item>
      <title>Re: Xamarin Forms App Crash on Android</title>
      <link>https://community.esri.com/t5/net-maps-sdk-questions/xamarin-forms-app-crash-on-android/m-p/648777#M8090</link>
      <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;P&gt;It looks like MapView.AddView is being called, which is explicitly disallowed. &amp;nbsp;Is the source code in your app making this call? &amp;nbsp;Or is it somehow being invoked otherwise? &amp;nbsp;The call stack suggests that some component named "&lt;SPAN style="background-color: #ffffff;"&gt;com.testfairy" might be the culprit.&lt;/SPAN&gt;&lt;/P&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
      <pubDate>Mon, 15 May 2017 18:59:26 GMT</pubDate>
      <guid>https://community.esri.com/t5/net-maps-sdk-questions/xamarin-forms-app-crash-on-android/m-p/648777#M8090</guid>
      <dc:creator>RichZwaap</dc:creator>
      <dc:date>2017-05-15T18:59:26Z</dc:date>
    </item>
    <item>
      <title>Re: Xamarin Forms App Crash on Android</title>
      <link>https://community.esri.com/t5/net-maps-sdk-questions/xamarin-forms-app-crash-on-android/m-p/648778#M8091</link>
      <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;P&gt;Hi Rich,&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;No my app is not explicitly making that call. &amp;nbsp;TestFairy is a site we use for deploying our apps to testers prior to doing a release to the app store, so it has nothing do with that either. &amp;nbsp;Even if I deploy a release build of my app directly to my Android tablet (without TestFairy in the mix) it crashes with the same error. &amp;nbsp;Oddly enough a debug build works fine.&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;There was another post on here that referenced the same error, but it doesn't look like it was ever solved. &amp;nbsp;This is a weird one ...&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;&lt;A href="https://community.esri.com/message/683700-net-runtime-sdk-100-errors-in-android-71?q=AddView"&gt;https://community.esri.com/message/683700-net-runtime-sdk-100-errors-in-android-71?q=AddView&lt;/A&gt;&amp;nbsp;&lt;/P&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
      <pubDate>Mon, 15 May 2017 19:05:44 GMT</pubDate>
      <guid>https://community.esri.com/t5/net-maps-sdk-questions/xamarin-forms-app-crash-on-android/m-p/648778#M8091</guid>
      <dc:creator>AndyWright</dc:creator>
      <dc:date>2017-05-15T19:05:44Z</dc:date>
    </item>
    <item>
      <title>Re: Xamarin Forms App Crash on Android</title>
      <link>https://community.esri.com/t5/net-maps-sdk-questions/xamarin-forms-app-crash-on-android/m-p/648779#M8092</link>
      <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;P&gt;That other post looks similar on the surface, but the call stack is quite different. &amp;nbsp;That looks like a rendering issue, whereas this appears to be due to&amp;nbsp;&lt;EM&gt;something&amp;nbsp;&lt;/EM&gt;making a call to MapView.AddView. &amp;nbsp;Aside from the stack trace making a call there, the resulting exception message, "AddView is for internal use only," is exactly as we'd expect. &amp;nbsp;It could be that the OS is invoking this for some reason, but that certainly seems odd. &amp;nbsp;We have exercised 7.0 and 7.1 devices internally, so&amp;nbsp;that suggests this might be something device-specific. &amp;nbsp;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;BLOCKQUOTE class="jive_macro_quote jive-quote jive_text_macro"&gt;&lt;P&gt;&lt;SPAN style="background-color: #ffffff;"&gt;I just upgraded some of the Android components on my PC, specifically installing the 7.0 and 7.1.1 SDK platforms and the latest Android SDK Tools and platforms tools&lt;/SPAN&gt;&lt;/P&gt;&lt;/BLOCKQUOTE&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;So deploying and running your app to this device worked previously? &amp;nbsp;With the app built in Release? &amp;nbsp;If so, did you also change the target version of your app?&lt;/P&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
      <pubDate>Mon, 15 May 2017 19:30:22 GMT</pubDate>
      <guid>https://community.esri.com/t5/net-maps-sdk-questions/xamarin-forms-app-crash-on-android/m-p/648779#M8092</guid>
      <dc:creator>RichZwaap</dc:creator>
      <dc:date>2017-05-15T19:30:22Z</dc:date>
    </item>
    <item>
      <title>Re: Xamarin Forms App Crash on Android</title>
      <link>https://community.esri.com/t5/net-maps-sdk-questions/xamarin-forms-app-crash-on-android/m-p/648780#M8093</link>
      <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;P&gt;It could be. &amp;nbsp;I'm running a Tab S SM-T800 with Android version 5.0.2 running on it. &amp;nbsp;It's about 3 years old, so it's no spring chicken but was working great until I upgraded all the Android stuff on my development PC. &amp;nbsp;The target version for my app has remained the same - Android 5.0 (API Level 21 - Lollipop). &amp;nbsp;The target framework was Android 6.0 (Marshmallow) before, and I've tried it at Use Latest Platform (Android 7.1 (Nougat)) as well and I get the same error both ways. &amp;nbsp;The Target Android version has always been Use Compile using SDK version.&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;You say you've exercised 7.0 and 7.1 devices internally. &amp;nbsp;Was that on the 100.0 build or something more recent?&lt;/P&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
      <pubDate>Mon, 15 May 2017 21:46:09 GMT</pubDate>
      <guid>https://community.esri.com/t5/net-maps-sdk-questions/xamarin-forms-app-crash-on-android/m-p/648780#M8093</guid>
      <dc:creator>AndyWright</dc:creator>
      <dc:date>2017-05-15T21:46:09Z</dc:date>
    </item>
    <item>
      <title>Re: Xamarin Forms App Crash on Android</title>
      <link>https://community.esri.com/t5/net-maps-sdk-questions/xamarin-forms-app-crash-on-android/m-p/648781#M8094</link>
      <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;P&gt;With 100.0 as well as more recent. &amp;nbsp;So whatever it is, it's not a simple matter of across-the-board OS version incompatibility.&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Could you try deploying a new app created from our project template to see whether that runs into the same issue?&lt;/P&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
      <pubDate>Tue, 16 May 2017 01:50:52 GMT</pubDate>
      <guid>https://community.esri.com/t5/net-maps-sdk-questions/xamarin-forms-app-crash-on-android/m-p/648781#M8094</guid>
      <dc:creator>RichZwaap</dc:creator>
      <dc:date>2017-05-16T01:50:52Z</dc:date>
    </item>
    <item>
      <title>Re: Xamarin Forms App Crash on Android</title>
      <link>https://community.esri.com/t5/net-maps-sdk-questions/xamarin-forms-app-crash-on-android/m-p/648782#M8095</link>
      <description>&lt;HTML&gt;&lt;HEAD&gt;&lt;/HEAD&gt;&lt;BODY&gt;&lt;P&gt;Rich,&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;I just deployed a vanilla Runtime template app up to Test Fairy and the same thing happened - crash at app launch. &amp;nbsp;I then uninstalled the app and deployed the raw APK directly to my Android device circumventing the whole Test Fairy thing and it worked fine. &amp;nbsp;So this looks like an issue specific to Test Fairy rather than something to do with the Esri API. &amp;nbsp;Not sure why it's barfing on the MapView at launch time, but at least I know who the culprit is.&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Thanks for all your suggestions Rich ...&lt;/P&gt;&lt;/BODY&gt;&lt;/HTML&gt;</description>
      <pubDate>Tue, 16 May 2017 20:12:00 GMT</pubDate>
      <guid>https://community.esri.com/t5/net-maps-sdk-questions/xamarin-forms-app-crash-on-android/m-p/648782#M8095</guid>
      <dc:creator>AndyWright</dc:creator>
      <dc:date>2017-05-16T20:12:00Z</dc:date>
    </item>
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