Create android.yml

.github/workflows/android.yml

@@ -0,0 +1,36 @@
+name: Android CI
+
+on:
+  # Run it manually
+  workflow_dispatch:
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: set up JDK 11
+      uses: actions/setup-java@v2
+      with:
+        java-version: '11'
+        distribution: 'temurin'
+        cache: gradle
+
+    - name: Change directory
+      run: cd ./android-app
+
+    - name: Grant execute permission for gradlew
+      run: chmod +x gradlew
+
+    - name: Build with Gradle
+      run: ./gradlew build
+
+    - name: Upload the artifacts
+      uses: actions/[email protected]
+      with:
+        # Artifact name
+        name: release
+        # Destination path
+        path: ./flutter_app/build/app/outputs/apk/release/*.apk