如何使用Android R8为远程aar文件保留类名和方法名？

Question

我正在通过创建 aar 文件来编写 Android Studio 库。我将此文件安装在专用网络的 maven 存储库上。我现在正在尝试让用户只知道类名称和方法名称，在 Stackoverflow库混淆中使用 proguard的这个问题的帮助下，但没有成功。我成功地只对几个类名和构造函数名这样做，而方法名混淆为字母（a（），b（）......）。现在，当我在 build.gradle 文件中本地获取库时，一切正常

implementation(files('C:\\Users\\User\\AndroidStudioProjects\\android-app2\\app\\build\\outputs\\aar\\app-open.aar'))

但不是那样

api('xx.yyy.sdk:app:1.0.0@aar') { transitive = true }

第一个包括显示所有类及其名称和方法名，而第二个只显示几个类名和构造函数名称，正如我之前写的。

项目的 build.gradle 文件

buildscript {
     dependencies {
        classpath 'com.android.tools.build:gradle:3.4.1'
     }
}

保护文件

#
# This ProGuard configuration file illustrates how to process a program
# library, such that it remains usable as a library.
# Usage:
#     java -jar proguard.jar @library.pro
#

# Specify the input jars, output jars, and library jars.
# In this case, the input jar is the program library that we want to process.

#-injars  in.jar
#-outjars out.jar
#
#-libraryjars  <java.home>/lib/rt.jar

# Save the obfuscation mapping to a file, so we can de-obfuscate any stack
# traces later on. Keep a fixed source file attribute and all line number
# tables to get line numbers in the stack traces.
# You can comment this out if you're not interested in stack traces.

-printmapping out.map
-keepparameternames
-renamesourcefileattribute SourceFile
-keepattributes Exceptions,InnerClasses,Signature,Deprecated,SourceFile,LineNumberTable,EnclosingMethod

# Preserve all annotations.

-keepattributes *Annotation*

# Preserve all public classes, and their public and protected fields and
# methods.

-keep public class * {
    public protected *;
}

# Preserve all .class method names.

-keepclassmembernames class * {
    java.lang.Class class$(java.lang.String);
    java.lang.Class class$(java.lang.String, boolean);
}

# Preserve all native method names and the names of their classes.

-keepclasseswithmembernames class * {
    native <methods>;
}

# Preserve the special static methods that are required in all enumeration
# classes.

-keepclassmembers class * extends java.lang.Enum {
    public static **[] values();
    public static ** valueOf(java.lang.String);
}

# Explicitly preserve all serialization members. The Serializable interface
# is only a marker interface, so it wouldn't save them.
# You can comment this out if your library doesn't use serialization.
# If your code contains serializable classes that have to be backward
# compatible, please refer to the manual.

-keepclassmembers class * implements java.io.Serializable {
    static final long serialVersionUID;
    static final java.io.ObjectStreamField[] serialPersistentFields;
    private void writeObject(java.io.ObjectOutputStream);
    private void readObject(java.io.ObjectInputStream);
    java.lang.Object writeReplace();
    java.lang.Object readResolve();
}

# Your library may contain more items that need to be preserved;
# typically classes that are dynamically created using Class.forName:

# -keep public class mypackage.MyClass
# -keep public interface mypackage.MyInterface
# -keep public class * implements mypackage.MyInterface

应用程序的 build.gradle 文件

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

我该怎么做才能解决问题？先感谢您！