How to verify android device Screen ON or OFF using adb shell command

Question

Tried to check device Screen ON or OFF using mScreenOn=true or mPowerState=SCREEN_BRIGHT_BIT. But the following commands are NOT working in latest android versions. It is returning nothing

Following commands working fine in Android - 4.3 Jelly Bean

1. using input_method dumpsys

   adb shell dumpsys input_method | grep mScreenOn

2. using power dumpsys

   adb shell dumpsys power | grep mScreenOn or

   adb shell dumpsys power | grep mPowerState

is there any other way to verify the screen OFF or ON state using adb shell command on latest android versions (Lollipop, Nougat, Oreo, Pie,..etc)

Answer 1

Recently I had same problem and found out below solution.

mInteractive value would be "true" in dumpsys input_method for display ON and "false" for display OFF.

Ex usage in shell script:

screen_info=`adb shell dumpsys input_method | grep mInteractive=true`
if [[ $screen_info == *"mInteractive"* ]]
then
    echo "Screen is ON"
     #Do something
else
    echo "Screen is OFF"
    #Do something
fi