iphone - Using the proximity sensor to do something in iOS -

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i'm trying make app when put hand on proximity sensor. looking @ the apple docs. on uidevice , can't find information on how when sensor covered. assume there method have put in code can't find it. thanks.

from link, proximitymonitoringenabled. i've ask google this, , found link : http://mobileorchard.com/new-in-iphone-30-tutorial-series-part-4-proximity-detection/

probably not one, ok.


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