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dexter foo
8,233 PointsresignFirstResponder()
In the project file downloads, i noticed there is func called resignFirstResponder() in the IBAction loginButtonPressed under the LoginViewController. Pasan didn't write this function in his video nor did he address the use of it. May i know whats its purpose in the IBAction func loginButtonPressed?
1 Answer
Stepan Ulyanin
11,318 PointsApple reference: Notifies the receiver that it has been asked to relinquish its status as first responder in its window.
Lets say you a making an app where you have a login screen implemented, the user taps on Log In button and it takes him to another view controller with some text fields (username, password) and then the user will HAVE TO tap the username field to open the keyboard, which is very uncomfortable for the user to make an extra tap
BUT you could make the username textfield to be the first responder meaning that once the user is taken to the log in screen the text field will open keyboard automatically as the first object to respond on the screen. Apple reference says: A responder object only becomes the first responder if the current responder can resign first-responder status (canResignFirstResponder) and the new responder can become first responder. That is why there is such thing like resignFirstResponder(), hope it helps