Added GitHub action for automatic release build

.github/workflows/build-and-release.yml

@@ -0,0 +1,81 @@
+name: Build and Release
+
+on:
+  push:
+    tags:
+      - "v*"
+
+jobs:
+  apk:
+    name: Generate APK
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Setup JDK
+        uses: actions/setup-java@v3
+        with:
+          distribution: adopt
+          java-version: 11
+
+      - name: Make Gradle wrapper executable
+        run: chmod +x ./gradlew
+
+      - name: Validate Gradle wrapper
+        uses: gradle/wrapper-validation-action@v1
+
+      - name: Build debug APK
+        uses: gradle/gradle-build-action@v2
+        with:
+          arguments: assembleDebug
+        env:
+          STORE_PASSWORD: ${{ secrets.STORE_PASSWORD }}
+          KEY_ALIAS: ${{ secrets.KEY_ALIAS }}
+          KEY_PASSWORD: ${{ secrets.KEY_PASSWORD }}
+
+      - name: Extract keystore to disk
+        run: 'echo "${{ secrets.STORE_FILE }}" | base64 -d > ./release.keystore'
+        shell: bash
+
+      - name: Build release APK
+        uses: gradle/gradle-build-action@v2
+        with:
+          arguments: assembleRelease
+        env:
+          STORE_PASSWORD: ${{ secrets.STORE_PASSWORD }}
+          KEY_ALIAS: ${{ secrets.KEY_ALIAS }}
+          KEY_PASSWORD: ${{ secrets.KEY_PASSWORD }}
+
+      - name: Remove keystore from disk
+        run: rm ./release.keystore
+
+      - name: Upload debug APK
+        uses: actions/upload-artifact@v3
+        with:
+          name: apk-debug
+          path: app/build/outputs/apk/debug/app-debug.apk
+
+      - name: Upload release APK
+        uses: actions/upload-artifact@v3
+        with:
+          name: apk
+          path: app/build/outputs/apk/release/app-release.apk
+
+  release:
+    name: Release APK
+    needs: apk
+    runs-on: ubuntu-latest
+    steps:
+      - name: Download APK from build
+        uses: actions/download-artifact@v1
+        with:
+          name: apk
+
+      - name: Upload Release APK
+        uses: softprops/action-gh-release@v1
+        with:
+          files: apk/*
+          prerelease: ${{ contains(github.ref_name, '-') }}
+          fail_on_unmatched_files: true
+          generate_release_notes: true

.gitignore

@@ -1,6 +1,8 @@
 *.iml
 .gradle
+/keystore.properties
 /local.properties
+/release.keystore
 /.idea/caches
 /.idea/libraries
 /.idea/modules.xml

app/build.gradle

@@ -3,7 +3,27 @@ plugins {
     id 'org.jetbrains.kotlin.android'
 }
 
+def keystoreProperties = new Properties()
+if (System.getenv('CI') != null) {
+    keystoreProperties.setProperty('build.storePassword', System.getenv('STORE_PASSWORD'))
+    keystoreProperties.setProperty('build.keyAlias', System.getenv('KEY_ALIAS'))
+    keystoreProperties.setProperty('build.keyPassword', System.getenv('KEY_PASSWORD'))
+}
+
+def keystorePropertiesFile = rootProject.file('keystore.properties')
+if (keystorePropertiesFile.exists()) {
+    keystoreProperties.load(new FileInputStream(keystorePropertiesFile))
+}
+
 android {
+    signingConfigs {
+        release {
+            storeFile file('../release.keystore')
+            storePassword keystoreProperties['build.storePassword']
+            keyAlias keystoreProperties['build.keyAlias']
+            keyPassword keystoreProperties['build.keyPassword']
+        }
+    }
     compileSdk 32
 
     defaultConfig {
@@ -18,6 +38,10 @@ android {
         release {
             minifyEnabled false
             proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+            signingConfig signingConfigs.release
+        }
+        debug {
+            signingConfig signingConfigs.debug
         }
     }
     compileOptions {