Result of call to 'becomeFirstResponder()' is unused UITextField inside UITableView

Question

I'm trying to put cursor in first UITextField inside UITableView and let keyboard to be displayed as wrote like that.

if (indexPath.row == 0) {
    cell.inputTextField.becomeFirstResponder()
}

But warning showing like that.

Result of call to 'becomeFirstResponder()' is unused

How to put cursor in first UITextField and let KeyBoard to be displayed?

Answer 1

I meet it when override 'becomeFirstResponder',if you want remove it,you can use @discardableResult

Answer 2

Since becomeFirstResponder() returns a Bool, you are supposed to check the return value according to warning.

If you don't need to know becomeFirstResponder was successful, you should write:

let _ = cell.inputTextField.becomeFirstResponder()