Accessing android.provider.Settings.System values from platform code

Is there a way to access Settings.System (开发者_运维问答i.e. persistent values) from platform code?

The idea is to read in some specific values from the storage area for data defined in Settings.System (if one exists).

So I see it as something like:

Manager.java ->(add data)-> [Settings.System database] ->(pull out data)-> DataManager.cpp

Manager.java and DataManager.cpp run completely separate from one another and in different processes.

Maybe someone could explain how persistent values operate on a low level or point me in the right direction?

Cheers.

Edit: Ok, so there is a db file under data/data/com.android.providers.settings/databases/settings.db

Sorry, there is no native API, you need to use JNI.

I found a way to do this. You can find the settings database by executing the following:

   $ adb shell
   $ su
   # find data -name "settings.db" -print
   data/data/com.android.providers.settings/databases/settings.db

And then use sqlite3 to read in values at a native level.