问题
Hi I implemented an NSPopover in one of my apps, but the popover will not close. I'm guessing that it should close once I click something else, but its not. I know that there's a close popover action but that only works for a different button. How can I make it look to see that the popover is open and when it is open to close the popover when I press the same button?
回答1:
I solved the problem!
- First go ahead and click your .xib file.
- Where you see the first responder box and files owner - click on the popover.
- On the sidebar go to the attributes center
- Change the behavior from Application-Defined to Transient and it should work!
That should make the popover disappear once someone has clicked outside the popover.
Another way to close the popover is to have a separate button.
Just add another NSButton and then link it to the popover on the sidebar and set it to Received actions -> perform close:
来源：https://stackoverflow.com/questions/7294976/how-to-make-action-to-close-nspopover