Android Question Display ON/OFF to save battery

[Cesaral]

I have an App that captures information from an external source (thru the USP port) for a long time and I need to save battery.

Is there a way to switch OFF the display (or the back light source of the display) to save battery, and by software switch it ON when needed?

 

[Quandalle]

    Dim p As Phone
 
    p.SetScreenBrightness(1.0) ' set Brightness : float value between  0.0 (min) and 1.0 (max)
    ...
    p.SetScreenBrightness(-1)  ' restore automatic Brightness

You ca also use PhoneWakeState

    Dim pw As PhoneWakeState
    pw.KeepAlive(False)