How to not obfuscate interface methods & its parameters using Proguard in Android?

Question

I have the following code:

public class MyClass {
    public void method1(Integer marks) {

    }

    private String method3(String name){

    }
    public interface interface1 {
        void method4(Integer ID);
        void method5(Integer rate, boolean status);
    }
}

I have used progaurd-rules.pro

-keepattributes Exceptions,InnerClasses,Signature,Deprecated,SourceFile,LineNumberTable,*Annotation*,EnclosingMethod

-keepparameternames

-keep public class *
-keepclassmembers public class *{
   public *;
 }
-keep public interface packageName.MyClass$interface1 { *; }

Obfuscated code as below:

public class MyClass {
    public void method1(Integer marks) {

    }

    private String a(String var1){

    }
    public interface interface1 {
        void method4(Integer var1);
        void method5(Integer var1, boolean var2);
    }
}

I want the interface methods variables (ID, rate & status) not to obfuscate. i.e as below

public interface interface1 {
    void method4(Integer ID);
    void method5(Integer rate, boolean status);
}

How can it be possible?

I am not sure if this helps you. http://stackoverflow.com/questions/30526173/obfuscate-private-fields-using-proguard?rq=1 — DrunkenMaster, Feb 10 '16 at 06:37
@ user3796318 Thank you. I am able to do this with classes & it's methods and fields. But got problem while handling Interface. I'm glad if you share any idea of keeping parameters inside interface. — Pushpa, Feb 10 '16 at 10:40
If you use -dontobfuscate? Or do you want only this particular method not obfuscated? — Jose Gonzalez, Mar 09 '17 at 18:55

score 3 · Answer 1 · answered Mar 09 '17 at 12:20

3

You could keep method's arguments by adding extra flags to -keepattributes. They look like this:

-keepattributes LocalVariableTable,LocalVariableTypeTable

Unfortunately, this keeps arguments from obfuscation not only in the interface you want, but in the entire project. Maybe that's fine for you.

If you're using a default proguard configuration shipped along with Android SDK then you could also use a special annotation to prevent some classes from obfuscation. Check it out.

answered Mar 09 '17 at 12:20

andrei_zaitcev

1,358
16
23

1

I only want to keep var names for params in functions i have defined in interfaces, the whole other part of the project should still be obfuscated as much as possible – and_dev Mar 09 '17 at 13:26

score 1 · Answer 2 · answered Apr 28 '20 at 09:44

1

public interface SSOListener {
    void sendDataToAnalytics(String event, JSONArray object);
}

// In my case JsonArray was obfuscated.


Solution :
-keep class org.json.JSONArray**, ** {
    protected <fields>;
    public <fields>;
    <methods>;
}

answered Apr 28 '20 at 09:44

Kuldip Sharma

782
1
6
8

3

Please add some explanation to your code such that others can learn from it – Nico Haase Apr 28 '20 at 11:33

score 0 · Answer 3 · answered Nov 09 '20 at 12:03

-keepattributes LocalVariableTable,LocalVariableTypeTable

The above keepattributes didn't work for me. However -keepparameternames did. I added this to the internal Proguard config that our Android Library uses. The other non keot classes still have their params obfuscated.

Note: I'm using R8 to actually obfuscate which is the default when using the Android Gradle Plugin since 3.4.0 also we are enforcing source and target compatibility to 1.8 (due to unrelated okhttp dependency)

score -1 · Answer 4 · answered Mar 04 '17 at 04:58

-1

ProGuard uses the naming convention of Java bytecode, as seen in class file names and stacktraces. Therefore:

-keep public interface com.somepackage.SomeClass$someInterface {*;}

In case if your interface is not public.

-keep interface com.somepackage.SomeClass$someInterface {*;}.

answered Mar 04 '17 at 04:58

Abhishek Aryan

19,936
8
46
65

3

Unfortunately parameter names of interface functions are not kept – and_dev Mar 06 '17 at 08:01

How to not obfuscate interface methods & its parameters using Proguard in Android?

4 Answers4

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