Does both ContentProvider and ContentResolver application need to be in memory to communicate?

Question

Does both ContentProvider and ContentResolver application need to be in memory to communicate?

Two applications are different and using permission to read and write.

Answer 1

Yes. However, if an app makes a request using a ContentResolver, and the provider's app is not running, Android will start up a process for that app to create the provider, to be able to respond to the request. So, by the time the communication completes, both processes will be running.