知道何时在Apple Watch Modal Interface Controller中单击取消按钮

Question

Is there a way to know if the cancel button is pressed by the user if the interface controller was displayed modally? Let's say you want to do something before the interface controller is dismissed.

Answer 1

The only method available is -didDeactivate . This will get called when the screen will disappear or when the app will close. Unfortunately, there is no direct way to know when the cancel button is pressed.

Answer 2

If you need to do some things when the controller will be dismissed you can also call deinit eg ;

  deinit {
    doStuff()
  }