System.NotSupportedException: Could not activate JNI Handle 0x7fca1a7480 (key_handle 0x2ad6405) of Java type 'Esri/ArcGISRuntime/UI/MapView' as managed type 'Esri.ArcGISRuntime.UI.MapView'.

[NadirHussain]

my mobile is in debug mode.how to solve this on mobile device.

System.NotSupportedException: Could not activate JNI Handle 0x7fca1a7480 (key_handle 0x2ad6405) of Java type 'Esri/ArcGISRuntime/UI/MapView' as managed type 'Esri.ArcGISRuntime.UI.MapView'.

how 

[dotMorten_esri]

If any of you are experiencing this issue on a device running Android v4.2 or older (API level 17 or below), try adding the following line of code to the Application's constructor:

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