Android system setting change possible in Inventor?

Hey all, I was wondering: Is it possible to create an app that interacts with android settings directly? Say a toggle switch to turn on and off Alarm, Vibration etc.

Also, can the app be made to run in the background and only use the GUI sometimes, say to change a setting?

Sorry, App Inventor apps can not run 'in the background.'    Impossible.  Ai programming is event driven, you can not have multiple processing threads.

Interacts with Android Settings?   You can use AI with an ActivityStarter to invoke the Setting screens, change parameters directly...no and as a security feature, other compilers can not change many Android Settings directly.