'Start share, see:
'https://www.b4x.com/android/forum/threads/get-details-of-the-apps-my-app-shares-files-with.128687/
UI_activityviewcontroller.Initialize("Event_UI_activityviewcontroller", Array(wrk_bmp))
'Wait for share to complete
UI_activityviewcontroller.Show(Showlist_page, Null)
Wait For Event_UI_activityviewcontroller_Complete(wrk_success As Boolean, wrk_activitytype As String)