.github/workflows/release.yml

@@ -26,6 +26,14 @@ jobs:
         with:
           flutter-version: '3.24.1'
 
+      - uses: nttld/setup-ndk@v1
+        id: setup-ndk
+        with:
+          ndk-version: r21b
+          # r21b is 21.1.6352462, if it is not published here https://developer.android.com/ndk/downloads
+          # or here https://github.com/android/ndk/wiki/Unsupported-Downloads then you must download them and look at
+          # source.properties to determine the version
+
       - name: Check out code
         uses: actions/checkout@v3
 
@@ -104,6 +112,7 @@ jobs:
       - name: Build Android
         env:
           TOKEN: ${{ secrets.MACHINE_USER_PAT }}
+          ANDROID_NDK_HOME: ${{ steps.setup-ndk.outputs.ndk-path }}
           GOOGLE_PLAY_KEYSTORE_PASSWORD: ${{ secrets.GOOGLE_PLAY_KEYSTORE_PASSWORD }}
         run: |
           flutter build appbundle --build-number="$BUILD_NUMBER" --build-name="$BUILD_NAME"

android/app/build.gradle

@@ -28,9 +28,6 @@ android {
 
     compileSdkVersion 34
 
-    // default ndk version for AGP 8.5: https://developer.android.com/build/releases/past-releases/agp-8-5-0-release-notes
-    ndkVersion "26.1.10909125"
-
     sourceSets {
         main.java.srcDirs += 'src/main/kotlin'
     }

android/app/proguard-rules.pro

@@ -1,3 +1,11 @@
+# Flutter Wrapper - this came from guidance at https://medium.com/@swav.kulinski/flutter-and-android-obfuscation-8768ac544421
+-keep class io.flutter.app.** { *; }
+-keep class io.flutter.plugin.**  { *; }
+-keep class io.flutter.util.**  { *; }
+-keep class io.flutter.view.**  { *; }
+-keep class io.flutter.**  { *; }
+-keep class io.flutter.plugins.**  { *; }
+
 # Keep our class names for gson
 -keep class net.defined.mobile_nebula.** { *; }
 -keep class androidx.security.crypto.** { *; }

nebula/Makefile

@@ -7,7 +7,7 @@ clean:
 
 mobileNebula.aar: *.go go.sum
 	go get -d golang.org/x/mobile/cmd/gomobile
-	gomobile bind -trimpath -v --target=android -androidapi 26
+	gomobile bind -trimpath -v --target=android
 
 MobileNebula.xcframework: *.go go.sum
 	go get -d golang.org/x/mobile/cmd/gomobile