Authentication error: Unable to respond to any of these challenges: {} Android - 401 Unauthorized
问题 Authentication error: Unable to respond to any of these challenges: {} Android - 401 Unauthorized I have taken reference from this link Authentication Error when using HttpPost with DefaultHttpClient on Android I am working on android app in that backed in Drupal. In that I am sending data from android app to drupal website - webservice in JSON format. Now I can read JSON data from Drupal webservice and writing it in my android application. But facing problem in writing on drupal from android