Mida mõeldakse mõiste all first responder ja kuidas seda kasutatakse süsteemides või rakendustes?

In iOS, the concept of "first responder" refers to the object that first receives input events, such as touches, key presses, and other user interactions.

The first responder is part of the responder chain, which determines the order in which events are propagated between objects.

For example, when a user taps on a text field, it becomes the first responder and starts receiving keyboard events.

This allows managing input focus and processing events exactly by the object that is active at the moment.

To make an object the first responder, the following method is called:

textField.becomeFirstResponder()

And to relinquish this status:

textField.resignFirstResponder()

Thus, the first responder plays a key role in handling user input and interaction with the interface.