Sign apk with fixed key

Author: wangwillian0

.github/workflows/ubuntu.yml

@@ -22,6 +22,10 @@ jobs:
         run: |
           rustup target add aarch64-linux-android armv7-linux-androideabi x86_64-linux-android i686-linux-android
           cargo install cargo-ndk
+      - name: Setup Keystore
+        run: |
+          echo $ANDROID_KEYSTORE | base64 --decode > ./android/app/key.jks
+          echo $ANDROID_KEY_PROPERTIES | base64 --decode > ./android/key.properties
       - name: Build for Android
         env:
           SDK_REGISTRY_TOKEN: ${{ secrets.MAP_SDK_SECRET_KEY }}

android/app/build.gradle

@@ -1,3 +1,7 @@
+def keystorePropertiesFile = rootProject.file("key.properties")
+def keystoreProperties = new Properties()
+keystoreProperties.load(new FileInputStream(keystorePropertiesFile))
+
 def localProperties = new Properties()
 def localPropertiesFile = rootProject.file('local.properties')
 if (localPropertiesFile.exists()) {
@@ -50,11 +54,18 @@ android {
         versionName flutterVersionName
     }
 
+    signingConfigs {
+        release {
+            storeFile file(keystoreProperties['storeFile'])
+            storePassword keystoreProperties['storePassword']
+            keyAlias keystoreProperties['keyAlias']
+            keyPassword keystoreProperties['keyPassword']
+        }
+    }
+
     buildTypes {
         release {
-            // TODO: Add your own signing config for the release build.
-            // Signing with the debug keys for now, so `flutter run --release` works.
-            signingConfig signingConfigs.debug
+            signingConfig signingConfigs.release
         }
     }
 }