[BUG] Crash on device android

[hphuc613]

``My app working fine on emulator, but I build apk release and install in any physical device is crash and out the app when open camera. Please help me. With error:

E/AndroidRuntime(27497): FATAL EXCEPTION: main
E/AndroidRuntime(27497): Process: com.baseproject.lumas, PID: 27497
E/AndroidRuntime(27497): java.lang.RuntimeException: java.lang.NoSuchMethodException: c.b.d.e.values []

[MTM-A]

I have the same problem too. is a solution foreseen in a short time?

[hphuc613]

I have the same problem too. is a solution foreseen in a short time?

https://stackoverflow.com/questions/54847976/java-lang-assertionerror-impossible-caused-by-java-lang-nosuchmethodexception I see solution in case it relate to proguard

[greenking19]

I have the same problem too. is a solution foreseen in a short time?

https://stackoverflow.com/questions/54847976/java-lang-assertionerror-impossible-caused-by-java-lang-nosuchmethodexception I see solution in case it relate to proguard

🤔 Hello, I don't understand this solution a bit, where is the proguard in the flutter project. I am not very familiar with andorid

[hphuc613]

I have the same problem too. is a solution foreseen in a short time?

https://stackoverflow.com/questions/54847976/java-lang-assertionerror-impossible-caused-by-java-lang-nosuchmethodexception I see solution in case it relate to proguard

🤔 Hello, I don't understand this solution a bit, where is the proguard in the flutter project. I am not very familiar with andorid

https://stackoverflow.com/questions/52428973/how-to-minify-a-flutter-app-with-proguard Please, add file proguard like solution.

[itkun2013]

me too ,debug is ok ,but release crash

[greenking19]

me too ,debug is ok ,but release crash

爱坤，我找到问题了, 再打开二维码的时候收起键盘就可以了。

[Geowan]

For those still experiencing the crash in release but debug is okay, the issue is been caused by when building a release process in gradle. The way i was able to fix is is by

1. add the following to the android/app/build.gradle

   buildTypes { release { signingConfig signingConfigs.release

       minifyEnabled true
       useProguard true
   
       proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
   
   }

   }

The on the same path create a file proguard-rules.pro and add the following in it

    #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.**  { *; }
    -keepclassmembers enum * {
       public static **[] values();
       public static ** valueOf(java.lang.String); 
    }

This was able to fix my issue

[xncz8h]

For those still experiencing the crash in release but debug is okay, the issue is been caused by when building a release process in gradle. The way i was able to fix is is by

1. add the following to the android/app/build.gradle

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

   }

The on the same path create a file proguard-rules.pro and add the following in it

    #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.**  { *; }
    -keepclassmembers enum * {
       public static **[] values();
       public static ** valueOf(java.lang.String); 
    }

This was able to fix my issue

This worked for us. However, we had to remove the line "useProguard true". This caused build errors