Setup the android emulator on Azure Devops Pipelines

android-emulator-setup.yml

# NOTE: must be run on a MacOS Agent!

steps:
  - script: |
      # Install AVD files
      yes | $ANDROID_HOME/tools/bin/sdkmanager --install 'system-images;android-29;default;x86_64'
      yes | $ANDROID_HOME/tools/bin/sdkmanager --licenses

      # Create emulator
      echo "no" | $ANDROID_HOME/tools/bin/avdmanager create avd -n Pixel_API_29_AOSP -d pixel --package 'system-images;android-29;default;x86_64' --force
      $ANDROID_HOME/emulator/emulator -list-avds

      emulator_config=~/.android/avd/Pixel_API_29_AOSP.avd/config.ini

      # The following madness is to support empty OR populated config.ini files,
      # the state of which is dependant on the version of the emulator used (which we don't control),
      # so let's be defensive to be safe.

      # Replace existing config (NOTE we're on MacOS so sed works differently!)
      sed -i .bak 's/hw.lcd.density=.*/hw.lcd.density=420/' "$emulator_config"
      sed -i .bak 's/hw.lcd.height=.*/hw.lcd.height=1920/' "$emulator_config"
      sed -i .bak 's/hw.lcd.width=.*/hw.lcd.width=1080/' "$emulator_config"

      # Or, add new config
      if ! grep -q "hw.lcd.density" "$emulator_config"; then
        echo "hw.lcd.density=420" >> "$emulator_config"
      fi
      if ! grep -q "hw.lcd.height" "$emulator_config"; then
        echo "hw.lcd.height=1920" >> "$emulator_config"
      fi
      if ! grep -q "hw.lcd.width" "$emulator_config"; then
        echo "hw.lcd.width=1080" >> "$emulator_config"
      fi

      echo "Emulator settings ($emulator_config)"
      cat "$emulator_config"
    displayName: Create Android emulator

  - script: |
      echo "Starting emulator and waiting for boot to complete..."
      nohup $ANDROID_HOME/emulator/emulator -avd Pixel_API_29_AOSP -no-snapshot -no-window -no-audio -no-boot-anim -camera-back none -camera-front none -qemu -m 2048 > /dev/null 2>&1 &
      $ANDROID_HOME/platform-tools/adb wait-for-device shell 'while [[ -z $(getprop sys.boot_completed | tr -d '\r') ]]; do sleep 1; done; input keyevent 82'
      echo "Emulator has finished booting"
      $ANDROID_HOME/platform-tools/adb devices
    displayName: Start Android emulator