new: add signing to android

.github/workflows/ci.yml

@@ -127,6 +127,23 @@ jobs:
         run: |
           make ${{ matrix.platform }}-libs
 
+      - name: Signing properties
+        env:
+          ANDROID_SIGNING_KEY_ALIAS: ${{ secrets.ANDROID_SIGNING_KEY_ALIAS }}
+          ANDROID_SIGNING_KEY_PASSWORD: ${{ secrets.ANDROID_SIGNING_KEY_PASSWORD }}
+          ANDROID_SIGNING_STORE_PASSWORD: ${{ secrets.ANDROID_SIGNING_STORE_PASSWORD }}
+          ANDROID_SIGNING_KEY: ${{ secrets.ANDROID_SIGNING_KEY }}
+        run: |
+          cd android
+          touch signing.properties
+          echo $ANDROID_SIGNING_KEY | base64 -d > release.keystore
+          echo "keystore.path=release.keystore" > release.properties
+          echo keystore.password="$ANDROID_SIGNING_STORE_PASSWORD" >> release.properties
+          echo key.alias="$ANDROID_SIGNING_KEY_ALIAS" >> release.properties
+          echo key.password="$ANDROID_SIGNING_KEY_PASSWORD" >> release.properties
+          cp  release.* app/ 
+          cat release.properties
+          cd ..
       - name: Release ${{ matrix.platform }}
         run: |          
           make ${{ matrix.platform }}-release

android/app/build.gradle

@@ -66,10 +66,19 @@ android {
         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
+        }
+    }
+    signingConfigs {
+        release {
+            def properties = new Properties()
+            properties.load(new FileInputStream(rootProject.file('release.properties')))
+            keyAlias properties['key.alias']
+            keyPassword properties['key.password']
+            storeFile file(properties['keystore.path'])
+            storePassword properties['keystore.password']
         }
     }
-
 
     buildFeatures {
         viewBinding true