Upload android debug apk on Release

.github/workflows/gradle.yml

@@ -19,7 +19,9 @@ jobs:
   build:
     name: Gradle Checks
     runs-on: ubuntu-latest
-
+    defaults:
+          run:
+            working-directory: android
     steps:
       - uses: actions/checkout@v2
       - name: Set up JDK 1.8
@@ -33,19 +35,14 @@ jobs:
           key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle') }}
           restore-keys: ${{ runner.os }}-gradle
       - name: Style
-        run: |
-          cd android
-          ./gradlew checkStyle
+        run: ./gradlew checkStyle
       - name: Lint
-        run: |
-          cd android
-          ./gradlew lint
+        run: ./gradlew lint
       - name: Build
-        run: |
-          cd android
-          ./gradlew build
+        run: ./gradlew build
       - name: Upload
         uses: actions/upload-artifact@v2
         with:
           name: app-debug.apk
           path: android/app/build/outputs/apk/debug/app-debug.apk
+

.github/workflows/releases.yml

@@ -0,0 +1,42 @@
+on:
+  release:
+    types:
+      - published # We are using published instead of created because otherwise, it would never trigger if it was first created as a draft and then published.
+
+name: Upload Android Apk to Release
+
+jobs:
+  upload-apk-to-release:
+    name: Add Android Debug Apk to Release Assets
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: android
+    steps:
+      - uses: actions/checkout@v2
+      - name: Print Release Url
+        run: echo "${{ github.event.release.html_url }}"
+      - name: Cache Gradle packages
+        uses: actions/cache@v2
+        with:
+          path: ~/.gradle/caches
+          key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle') }}
+          restore-keys: ${{ runner.os }}-gradle
+      - name: Assemble Debug Apk
+        id: assemble_debug_apk
+        run: |
+          ./gradlew assembleDebug
+          echo "::set-output name=debug_apk_path::$(pwd)/app/build/outputs/apk/debug/app-debug.apk"
+      - name: Specify Release Asset Name using tag [${{github.event.release.tag_name}}]
+        id: make_asset_name
+        run: echo "::set-output name=asset_name::OpenBot-$(echo ${{github.event.release.tag_name}}| sed 's/[^-a-zA-Z0-9.]/_/g'| sed 's/^v//').apk"
+      - name: Upload Release Asset
+        id: upload-release-asset
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GH_TOKEN }}${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ github.event.release.upload_url }}
+          asset_path: ${{ steps.assemble_debug_apk.outputs.debug_apk_path }}
+          asset_name: ${{steps.make_asset_name.outputs.asset_name}}
+          asset_content_type: application/vnd.android.package-archive

android/README.md

@@ -6,12 +6,12 @@ Our application is derived from the [TensorFlow Lite Object Detection Android De
 
 ### Prerequisites
 
-- Setup [Android Studio](https://developer.android.com/studio/index.html)
+- [Android Studio 3.2 or later](https://developer.android.com/studio/index.html) for building and installing the apk, or otherwise download the apk from the assets of the [latest release](https://github.com/intel-isl/OpenBot/releases/latest).
 - Android device and Android development environment with minimum API 21
-- Android Studio 3.2 or later
 
 ### Building
 
+- In case you are using the apk from the assets of the [latest release](https://github.com/intel-isl/OpenBot/releases/latest), you can skip the below steps and instead just [install](https://www.lifewire.com/install-apk-on-android-4177185) it on your phone directly. Note that that apk is signed with a debug key.
 - Open Android Studio and select *Open an existing Android Studio project*.
 - Select the OpenBot/android directory and click OK.
 - Confirm Gradle Sync if neccessary.