How to turn off Android phone programmatically?

Question

I want to make a lock screen application. When the phone is in the lock mode, it will turn off the phone while the USB is plugged for prevent other users from accessing the

Answer 1

Yes it is possible,

Using making system application(Using firmware) not download application. You can get the code for power off android device from AOSP.

Answer 2

This is what can provide you an insight of the OS you are working on , and not about developing an app that would run on any device, as you have not made OS's for them.

Just pull a branch of android , customize it according to your wish and in your mainfest remove the filters, permissions that don't allow you to do that, or add your owns. Now , you have to play with the battery if I talk of more depth.

But if you just want to trigger the click on power off then its far simpler then.

Answer 3

It is impossible with the public Android SDK.