iOS App extensions are not allowed to use all available public Apple API.
This Apple documentation lists some restrictions. For instance:
Because of its focused role in the system, an app extension is ineligible to participate in certain activities. An app extension cannot: ... Access the camera or microphone on an iOS device...
But in WWDC 2016 iMesages Apps is mentioned that iMessage apps, in contrast to other extension types, are allowed to access the camera though.
Conclusion:
- iOS App extensions are not allowed to use all available public Apple API
- different kind of app extensions have a different set of restrictions
Problem:
I can not find valid information regarding restrictions for each kind of extension (iMessage Extension, Photo Extansion...).
Question:
Is there a source of trustworthy information, listing the different restrictions for differnet extension types?
