Question

Was reading over Android system application DEVICE_POWER permission error and How to sign Android app with system signature?

I am still unable to sign my application as a system app. I don’t know where /build/target/product/security is.

Do I pull the key off my own device to use for signing my app.

I just want my app to be able to call:

private void screenOff(){
    PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);

    long time = SystemClock.uptimeMillis() + 1000;
    pm.goToSleep(time);
}

Thanks for your answers.

Answer 1

You can only sign your application as a system app if you are building Android from source for your project. If you’re interested in a hack that will only work on your phone see:

How to sign Android app with system signature?