Causes the view (or one of its embedded text fields) to resign the first responder status.
- iOS 2.0+
- tvOS 9.0+
trueto force the first responder to resign, regardless of whether it wants to do so.
This method looks at the current view and its subview hierarchy for the text field that is currently the first responder. If it finds one, it asks that text field to resign as first responder. If the
force parameter is set to
true, the text field is never even asked; it is forced to resign.