Code Obfuscation #1

android/app/build.gradle

@@ -53,9 +53,13 @@ android {
 
     buildTypes {
         release {
+            signingConfig signingConfigs.debug
+            minifyEnabled true
+            shrinkResources true
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 
+            'proguard-rules.pro'
             // 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
         }
     }
 }

android/app/proguard-rules.pro

@@ -0,0 +1,77 @@
+# Keep Flutter embedding and plugin registrant (important)
+-keep class io.flutter.embedding.** { *; }
+-keep class io.flutter.plugins.** { *; }
+-keep class io.flutter.plugin.** { *; }
+-keep class io.flutter.app.** { *; }
+
+# Keep Application / Activity if you customized them (replace with your package name)
+# -keep class com.yourcompany.yourapp.MainActivity { *; }
+# -keep class com.yourcompany.yourapp.** { *; }
+
+# Keep classes referenced from AndroidManifest via reflection or lifecycle
+-keepclassmembers class * {
+    @android.webkit.JavascriptInterface <methods>;
+    public <init>(android.content.Context, ...);
+}
+
+# Keep native entry points (JNI) if any (example)
+-keepclasseswithmembernames class * {
+    native <methods>;
+}
+
+# Keep classes that use reflection heavily (OKHttp/Retrofit/Gson)
+# Retrofit/OkHttp
+-keep class okhttp3.** { *; }
+-keep interface okhttp3.** { *; }
+-keep class retrofit2.** { *; }
+-keep interface retrofit2.** { *; }
+
+# Gson (models accessed by reflection)
+-keep class com.google.gson.** { *; }
+-keepattributes Signature
+-keepattributes *Annotation*
+
+# Keep Firebase (if you use it)
+-keep class com.google.firebase.** { *; }
+-keep class com.google.android.gms.** { *; }
+
+# WorkManager (if used)
+-keep class androidx.work.impl.background.systemjob.SystemJobService { *; }
+-keep class androidx.work.** { *; }
+
+# Room/DB entities - if you use Room, keep annotations and entity classes
+-keepclassmembers class * {
+    @androidx.room.* <fields>;
+}
+-keep class androidx.room.** { *; }
+
+# Keep classes loaded by reflection (e.g. through Class.forName)
+-keepclassmembers,includedescriptorclasses class * {
+    public static <fields>;
+    public <init>(...);
+}
+
+# Keep Kotlin metadata (for Kotlin reflection)
+-keep class kotlin.Metadata { *; }
+
+# Keep names of classes annotated with @Keep
+-keep @androidx.annotation.Keep class * { *; }
+-keepclassmembers class * {
+    @androidx.annotation.Keep *;
+}
+
+# If using Gson TypeAdapterFactory via reflection
+-keepclassmembers class * {
+    static ** typeAdapterFactory*(...);
+}
+
+# Don't remove debug/logging if you want (optional)
+#-keep class android.util.Log { *; }
+
+# Keep any generated plugin registrant classes if present (older projects)
+-keep class io.flutter.plugins.GeneratedPluginRegistrant { *; }
+
+# (Optional) Keep parcelable implementations if those are serialized dynamically
+-keep class * implements android.os.Parcelable {
+  public static final android.os.Parcelable$Creator *;
+}