Using an AVD caching on Github Action

.github/workflows/Build.yaml

@@ -191,15 +191,44 @@ jobs:
         with:
           cache-encryption-key: ${{ secrets.GRADLE_ENCRYPTION_KEY }}
 
+      - name: AVD cache
+        uses: actions/cache@v4
+        id: avd-cache
+        with:
+          path: |
+            ~/.android/avd/*
+            ~/.android/adb*
+          key: avd-${{ matrix.api-level }}
+
+      # Take a snapshot if it doesn't have a cache.
+      - name: create AVD and generate snapshot for caching
+        if: steps.avd-cache.outputs.cache-hit != 'true'
+        uses: reactivecircus/android-emulator-runner@v2
+        with:
+          api-level: ${{ matrix.api-level }}
+          avd-name: test-${{ matrix.api-level }}
+          force-avd-creation: false
+          arch: x86_64
+          disk-size: 6000M
+          heap-size: 600M
+          emulator-options: -no-window -gpu swiftshader_indirect -noaudio -no-boot-anim -camera-back none
+          disable-animations: false
+          script: echo "Generated AVD snapshot for caching."
+
       - name: Build projects and run instrumentation tests
         uses: reactivecircus/android-emulator-runner@v2
         with:
           api-level: ${{ matrix.api-level }}
+          avd-name: test-${{ matrix.api-level }}
           arch: x86_64
+          force-avd-creation: false
           disable-animations: true
           disk-size: 6000M
           heap-size: 600M
-          script: ./gradlew connectedDemoDebugAndroidTest --daemon
+          # && killall -INT crashpad_handler || true
+          # came from https://github.com/ReactiveCircus/android-emulator-runner/issues/385#issuecomment-2492035091
+          script: |
+            /usr/local/lib/android/sdk/platform-tools/adb -s emulator-5554 shell pm list packages -u | grep com.google.samples.apps.nowinandroid* | cut -d':' -f2 | tr '\r' ' ' | xargs -r -n1 -t adb uninstall; ./gradlew connectedDemoDebugAndroidTest --daemon && killall -INT crashpad_handler || true
 
       - name: Run local tests (including Roborazzi) for the combined coverage report (only API 30)
         if: matrix.api-level == 30