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Is it possible to create an app for the mac (and iphone afterwards) that does something when it detects that the focus is on a certain object in the screen?
Meaning, the program runs in the background, and when it detects that the focus (or cursor) is on an edit box, it will run something.
Hopefully I made myself clear!
Thanks!
You can do this on the mac by using the Accessibility Framework.
Note that users will have to manually enable assistive devices and you will not be able to distribute your app on the Mac App Store due to Apple’s soon-to-be-implemented sandboxing restriction.
On iOS, you can detect focus to certain but not all elements using specialized delegate methods such as
textViewDidBeginEditing:. That said, as users use taps to navigate iOS apps most of the time, simple tap handling seems like a much better approach.