I want play some sound just before my app get terminated by user. I can do all the customization that I want if user press quit from app menu, but if user wants quit the app from dock like this:
I cannot play the sound file, because I have no control on this part, how to delay or control when the real termination should be happen, when the user wants to quit the app from dock?
You can implement
applicationShouldTerminate on your
AppDelegate to tell the system what should happen when a user has requested to terminate the app.
The possible return values are (https://developer.apple.com/documentation/appkit/nsapplication/terminatereply):
Note that when a user choses to quit your app, they are expecting it to quit relatively instantaneously, so you should carefully consider the UX repercussions of delaying a termination like this.