title: How to display error messages to user in AsyncTask in Android?
body: <p>I am using <code>AsyncTask</code> to get the data form a web service that I created. Now I want to display proper error messages to user like if the Internet is not available it will display toast for that similarly if server is down it will display toast for that. I want to set a string with error like "server is down" or "internet problem occured" in doInBackground() and display Toast in onPostExecute() but I want to know if my server is down that what exception is thrown? and if my server is active but during transfer internet is disconnected so what exception is thrown ?</p>