问题
If I wanted to ignore a touch event in UIKit on the iPhone I would simply do:
// Begin ignoring events
[[UIApplication sharedApplication] beginIgnoringInteractionEvents];
//Do my code
// Stop ignoring events
[[UIApplication sharedApplication] endIgnoringInteractionEvents];
This allows my code in between the "ignore" calls to operate without having to worry about user interaction changing any state of the application.
My question is, how can I do this if I am writing a Mac OS X app (AppKit vs. UIKit)? I basically want to "lock-out" the user during some operations (specifically, making network calls, and changing state quickly would queue up a ton of network calls that would quickly get in the way of each other).
Do I need to manage this manually with AppKit? I.e. put up a progress bar, and disable all UI Elements by hand?
回答1:
On the desktop you really don't want to do such a thing. It only works on the iPhone because there is nothing else a user might reasonably want to do with your app at the time. On the desktop there are possibilities for multiple windows etc. and anytime your app is unresponsive is considered a bug.
So more directly: No, there is nothing like this. You have to achieve the same effect with a sheet/modal panel, but most of the time should design the UI such that it's not a problem anyhow.
来源：https://stackoverflow.com/questions/1697029/ignoring-ui-events-in-appkit