问题
Is it possible to access information like the alarm clock time and change it from a different application on the iPhone. And if its possible to do it, can it be approved by the app store to sell it?
回答1:
You can certainly do it—the CFPreferences API would probably be the right approach—but you definitely wouldn't get allowed into the App Store. If you're looking to make an alarm-clock application, check out the Scheduling Local Notifications docs.
来源：https://stackoverflow.com/questions/3445293/is-it-possible-to-change-set-the-alarm-clock-from-a-different-application-on-the