Execution failed for task ':app:transformClassesAndResourcesWithProguardForRelease

Question

I am trying to export apk and I want to enable Proguard but it throwing below error. I read so many answers and tried but didn\'t worked. Getting below error:

Answer 1

Close the project and Android Studio. Open the project again, rebuild the project. And then you can try to generate the APK. That's worked for me. Though wired!

Answer 2

You can try this keep class com.xyz.** { *; } -dontwarn com.xyz.**

Answer 3

add the below to your ProGuard rules

-ignorewarnings

-keep class * {
    public private *;
}

and rebuild your project.

Answer 4

try this at your proguard-rules.pro

-ignorewarnings
-keep class * {
    public private *;
}

Answer 5

buildTypes { release { shrinkResources true minifyEnabled true proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' } }

Please remove this line of code in your gradle. This worked for me.

Answer 6

Only -ignorewarnings this line solved my problem.

Also Add the following line to <ProjectRoot>/android/gradle.properties to Obfuscating Dart Code:

extra-gen-snapshot-options=--obfuscate

Please refer this and this for more information.

Also If you using Firebase Auth please add it to proguard-rules.pro file:

-keep class com.google.firebase.** { *; }

Sharing my /android/app/proguard-rules.pro file

#Flutter Wrapper
-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.**  { *; }
-ignorewarnings

Hope someone will help this