UIPopoverController dismiss on 'tap off' - how do I detect this event?

问题

I am using a UIPopover on my navigation bar. I have several UIBarButtonItems and the popover extends from one of these.

When the popOver is activated I changed the style of the button to UIBarButtonItemStyleDone.

However, the popOver is dismissed by tapping off the UIPopoverController as expected, but upon this I want to change the style back to UIBarButtonItemStyleBordered.

Is there a way I can detect if the UIPopOverController is closing? And therefore piggyback this for my own needs?

回答1:

Implement the -popoverControllerDidDismissPopover: method in your UIPopoverControllerDelegate and you should be able to do what you need to do in there.

- (void) popoverControllerDidDismissPopover:(UIPopoverController *) popoverController {
   //do stuff here...
}

来源：https://stackoverflow.com/questions/6212988/uipopovercontroller-dismiss-on-tap-off-how-do-i-detect-this-event