added proguard for code obfuscation in android

android/app/build.gradle

@@ -53,13 +53,13 @@ android {
 
     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
             minifyEnabled true
             shrinkResources true
-            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
-            '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.
         }
     }
 }

android/app/proguard-rules.pro

@@ -1,77 +1,21 @@
-# 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 class io.flutter.plugin.**  { *; }
-# Keep Application / Activity if you customized them (replace with your package name)
+-keep class io.flutter.util.**  { *; }
-# -keep class com.yourcompany.yourapp.MainActivity { *; }
+-keep class io.flutter.view.**  { *; }
-# -keep class com.yourcompany.yourapp.** { *; }
+-keep class io.flutter.embedding.**  { *; }
-
+-keep class io.flutter.embedding.engine.plugins.**  { *; }
-# 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.** { *; }
-
+# Please add these rules to your existing keep rules in order to suppress warnings.
-# WorkManager (if used)
+# This is generated automatically by the Android Gradle plugin.
--keep class androidx.work.impl.background.systemjob.SystemJobService { *; }
+-dontwarn com.google.android.play.core.splitcompat.SplitCompatApplication
--keep class androidx.work.** { *; }
+-dontwarn com.google.android.play.core.splitinstall.SplitInstallException
-
+-dontwarn com.google.android.play.core.splitinstall.SplitInstallManager
-# Room/DB entities - if you use Room, keep annotations and entity classes
+-dontwarn com.google.android.play.core.splitinstall.SplitInstallManagerFactory
--keepclassmembers class * {
+-dontwarn com.google.android.play.core.splitinstall.SplitInstallRequest$Builder
-    @androidx.room.* <fields>;
+-dontwarn com.google.android.play.core.splitinstall.SplitInstallRequest
-}
+-dontwarn com.google.android.play.core.splitinstall.SplitInstallSessionState
--keep class androidx.room.** { *; }
+-dontwarn com.google.android.play.core.splitinstall.SplitInstallStateUpdatedListener
-
+-dontwarn com.google.android.play.core.tasks.OnFailureListener
-# Keep classes loaded by reflection (e.g. through Class.forName)
+-dontwarn com.google.android.play.core.tasks.OnSuccessListener
--keepclassmembers,includedescriptorclasses class * {
+-dontwarn com.google.android.play.core.tasks.Task
-    public static <fields>;
-    public <init>(...);
-}
-
-# Keep Kotlin metadata (for Kotlin reflection)
--keep class kotlin.Metadata { *; }
-
-# Keep names of classes annotated with @Keep
--keep @androidx.annotation.Keep class * { *; }
--keepclassmembers class * {
-    @androidx.annotation.Keep *;
-}
-
-# If using Gson TypeAdapterFactory via reflection
--keepclassmembers class * {
-    static ** typeAdapterFactory*(...);
-}
-
-# Don't remove debug/logging if you want (optional)
-#-keep class android.util.Log { *; }
-
-# Keep any generated plugin registrant classes if present (older projects)
--keep class io.flutter.plugins.GeneratedPluginRegistrant { *; }
-
-# (Optional) Keep parcelable implementations if those are serialized dynamically
--keep class * implements android.os.Parcelable {
-  public static final android.os.Parcelable$Creator *;
-}