Blank/Empty screenshot

Hello,

A part of another project, we were playing around if it’s possible to take an screenshot when running some tests. We are having problems with that since all the screenshots we pull are empty/blank.

To reproduce it, it’s as simple ase using the following steps in a github action.

      - name: Test
        uses: reactiveCircus/android-emulator-runner@v2
        with:
          api-level: 29
          force-avd-creation: false
          arch: x86_64
          target: google_apis
          profile: Nexus 6
          script: adb shell screencap -p /data/local/tmp/Screenshot.png; adb pull /data/local/tmp/Screenshot.png Screenshot.png;

      - name: Upload screenshot
        if: always()
        uses: actions/upload-artifact@v3
        with:
          name: device-screenshot
          path: ./*Screenshot.png

Are we missing something? is it expected that screenshots are blank/empty when using emulators inside github actions?

[cmonfortep]

Thanks @mrk-han. We have that in our app, and on my dummy app for testing.

Let’s see if someone could bring more light here about possible issues around screenshots.

[cmonfortep]

I expect they will work as well, any reason why they shouldn’t work?

I’ve also seen people running screenshot tests on headless emulators, I don’t think that’s an issue. As a reference, this issue (https://github.com/ReactiveCircus/android-emulator-runner/issues/196) is about screenshots, and the emulator options they are using is -no-window.