The onliest case, when app can crash on Add Server screen and cause failure in ../AFHTTPClient.m:232, is passing nil from textFieldUrl while checkServerValidity. So for full confidence it is better to preset all textFields with empty strings in viewDidLoad.
The onliest case, when app can crash on Add Server screen and cause failure in ../AFHTTPClient.m:232, is passing nil from textFieldUrl while checkServerValidity. So for full confidence it is better to preset all textFields with empty strings in viewDidLoad.