Detect when application become active

Scripting Forums AppleScriptObjC and Xcode
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#1

I have been writing an application that takes a list of documents from another application. At the moment it collects that list in the applicationWillFinishLaunching_ section.

Is it possible to detect when my application becomes active and then run my handler to get the list of documents? I would like to do this so that if the user returns to the other application and opens or closes documents, the changes are reflected in my app.

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Operating System: Mac OS X (10.8)

#2

You need to register as an observer of NSWorkspace’s shared workspace’s notification centre’s NSWorkspaceDidActivateApplicationNotification notification. the handler you register will then get a notification whenever any application becomes active.

The’s a good example project in chapter 19 of my book.

#3

Thanks Shane “ I should have looked there first!