Is there a way to check if Android device screen is locked via adb?

Question

I know that PowerManager and/or KeyguardManager can help me check if a device screen is locked/unlocked. Is there a way to check this via adb?

Answer 1

One adb command I'm using is:

adb shell dumpsys window

This returns a few system variables that are useful such as mAwake, mShowingLockscreen, mScreenOnEarly, mScreenOnFully.

To figure out which correspond to a locked/unlocked screen, I used adb shell dumpsys window >

tl;dr

The combination that I'm finding to be persistent is:

Device is locked AND screen is off: mAwake=false AND mShowingLockscreen=true

Device is locked AND screen is on: mAwake=true AND mShowingLockscreen=true

Device is unlocked AND screen is on: mAwake=true AND mShowingLockscreen=false