I am getting the following error in an android signed apk, (xamarin shared code app) and after hours of googling and testing differently things it hasn't changed....here is the error from the logcat...
11-02 00:55:16.255 4218 4218 I MonoDroid: UNHANDLED EXCEPTION:
11-02 00:55:16.258 4218 4218 I MonoDroid: System.NullReferenceException: Object reference not set to an instance of an object
11-02 00:55:16.258 4218 4218 I MonoDroid: at Xamarin.Forms.Platform.Android.FormsApplicationActivity.OnPrepareOptionsMenu (Android.Views.IMenu) <0x00020>
11-02 00:55:16.258 4218 4218 I MonoDroid: at Android.App.Activity.n_OnPrepareOptionsMenu_Landroid_view_Menu_ (intptr,intptr,intptr) <0x0005b>
11-02 00:55:16.258 4218 4218 I MonoDroid: at (wrapper dynamic-method) object.7907aeaa-f610-48ef-9c8a-45469f9f1b7f (intptr,intptr,intptr) <0x0004b>
11-02 00:55:16.285 4218 4218 W Xamarin.Insights: Warning: Unhandled exception: System.NullReferenceException: Object reference not set to an instance of an object
11-02 00:55:16.285 4218 4218 W Xamarin.Insights: at Xamarin.Forms.Platform.Android.FormsApplicationActivity.OnPrepareOptionsMenu (Android.Views.IMenu) <0x00020>
11-02 00:55:16.285 4218 4218 W Xamarin.Insights: at Android.App.Activity.n_OnPrepareOptionsMenu_Landroid_view_Menu_ (intptr,intptr,intptr) <0x0005b>
11-02 00:55:16.285 4218 4218 W Xamarin.Insights: at (wrapper dynamic-method) object.7907aeaa-f610-48ef-9c8a-45469f9f1b7f (intptr,intptr,intptr) <0x0004b>
11-02 00:55:16.329 4218 4218 W mmbeer.sommbeer: type=1400 audit(0.0:4): avc: denied { read } for name="mem" dev="debugfs" ino=34918 scontext=u:r:untrusted_app:s0 tcontext=u:object_r:debugfs:s0 tclass=file
11-02 00:55:16.329 4218 4218 W mmbeer.sommbeer: type=1400 audit(0.0:5): avc: denied { read } for name="mem" dev="debugfs" ino=34918 scontext=u:r:untrusted_app:s0 tcontext=u:object_r:debugfs:s0 tclass=file
11-02 00:55:16.619 4218 4218 W art : JNI RegisterNativeMethods: attempt to register 0 native methods for md52ce486a14f4bcd95899665e9d932190b.JavaProxyThrowable
11-02 00:55:16.734 4218 4218 I mono-stdout: SommBeer MAIN ACTIVITY EXCEPTION
11-02 00:55:16.736 4218 4218 I mono-stdout: Java.Lang.RuntimeException: Exception of type 'Java.Lang.RuntimeException' was thrown.
11-02 00:55:16.736 4218 4218 I mono-stdout: --- End of managed exception stack trace ---
11-02 00:55:16.736 4218 4218 I mono-stdout: java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
11-02 00:55:16.736 4218 4218 I mono-stdout: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)
11-02 00:55:16.736 4218 4218 I mono-stdout: Caused by: java.lang.reflect.InvocationTargetException
11-02 00:55:16.736 4218 4218 I mono-stdout: at java.lang.reflect.Method.invoke(Native Method)
11-02 00:55:16.736 4218 4218 I mono-stdout: at java.lang.reflect.Method.invoke(Method.java:372)
11-02 00:55:16.736 4218 4218 I mono-stdout: at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899)
11-02 00:55:16.736 4218 4218 I mono-stdout: ... 1 more