java防止ProGuard混淆类成员名称

Question

我的类ClassMultiPoint带有子类

public class ClassMultiPoints
 {
   public String message;
   public List<ClassPoints> data;

   public class ClassPoints
    {
      public String id;
      public List<ClassPoint> points;
      public class ClassPoint
       {
         public String speed;
         public String bearing;
       }
    }
 }

我将从parseGSON中获取对象oPoints的值：

oPoints = gson.fromJson( jsonString, ClassMultiPoints.class);

我尝试使用oPoints.message

当我在没有proguard应用程序运行成功的情况下运行应用程序时。 当我用proguard运行我的应用程序时，我的应用程序崩溃

我认为问题是：proguard将我的类的属性'oPoints.message'重命名为short'a'

我尝试保持方法和属性的名称不变，但proguard重命名其名称：

proguard.cfg:

-injars      bin/classes
-injars      libs
-outjars     bin/classes-processed.jar
-dontpreverify
-repackageclasses ''
-allowaccessmodification
-optimizations !code/simplification/arithmetic
-keepattributes *Annotation*
-dontskipnonpubliclibraryclasses
-optimizationpasses 5
-printmapping map.txt
-flattenpackagehierarchy

-keep public class * extends 安卓.app.Activity
-keep public class * extends 安卓.app.Application
-keep public class * extends 安卓.app.MapActivity
-keep public class * extends 安卓.app.Service
-keep public class * extends 安卓.content.BroadcastReceiver
-keep public class * extends 安卓.content.ContentProvider

-libraryjars  libs/commons-io-2.2.jar
-libraryjars  libs/ftp4j-1.7.1.jar
-libraryjars  libs/gson-2.2.2.jar

-keep public class org.apache.commons.io.**
-keep public class it.sauronsoftware.ftp4j.**
-keep public class com.google.gson.**

-keep public class com.mypackagename.ActivityMonitor$*

-keep public class * extends 安卓.view.View {
    public <init>(安卓.content.Context);
    public <init>(安卓.content.Context, 安卓.util.AttributeSet);
    public <init>(安卓.content.Context, 安卓.util.AttributeSet, int);
    public void set*(...);
}

-keepclasseswithmembers class * {
    public <init>(安卓.content.Context, 安卓.util.AttributeSet);
}

-keepclasseswithmembers class * {
    public <init>(安卓.content.Context, 安卓.util.AttributeSet, int);
}

-keepclassmembers class * extends 安卓.content.Context {
   public void *(安卓.view.View);
   public void *(安卓.view.MenuItem);
}

-keepclassmembers class * implements 安卓.os.Parcelable {
    static 安卓.os.Parcelable$Creator CREATOR;
}

-keepclassmembers class **.R$* {
    public static <fields>;
}

保持我的one（静态）类的方法和属性名称的正确方法是什么

Answer 1

我还发现在使用Dexguard的Optimize选项时需要-keepclassmembers。没有这一点，我的几个模型对象无法反序列化

##---------------Begin: proguard configuration for Gson  ----------
# Gson uses generic type information stored in a class file when working with fields. Proguard
# removes such information by default, so configure it to keep all of it.
-keepattributes Signature

# For using GSON @Expose annotation
-keepattributes *Annotation*

# Application classes that will be serialized/deserialized over Gson, keepclassmembers
-keep class com.myapp.model.** { *; }
-keepclassmembers class com.myapp.model.** { *; }

Answer 2

如果您不希望类成员被混淆，那么使用Gson提供的SerializedName注释。例如：

public class ClassMultiPoints
{
   @SerializedName("message")
   public String message;
   @SerializedName("data")
   public List<ClassPoints> data;

   ...

}

此外，请确保您也为Gson库添加了适当的proguard配置。例如：

##---------------Begin: proguard configuration for Gson ----------
# Gson uses generic type information stored in a class file when working with
#fields. Proguard removes such information by default, so configure it to keep
#all of it.
-keepattributes Signature

# For using GSON @Expose annotation
-keepattributes *Annotation*

# Gson specific classes
-keep class sun.misc.Unsafe { *; }
#-keep class com.google.gson.stream.** { *; }

# Application classes that will be serialized/deserialized over Gson
-keep class com.google.gson.examples.android.model.** { *; }

##---------------End: proguard configuration for Gson ----------

有关更多信息，请阅读this

Answer 3

谢谢Waqas

我为我的案例找到了解决方案：

-optimizationpasses 5
-dump class_files.txt
-printseeds seeds.txt
-printusage unused.txt
-printmapping mapping.txt
-optimizations !code/simplification/arithmetic,!field/*,!class/merging*/
-allowaccessmodification
-repackageclasses ''

-keep public class * extends android.app.Activity
-keep public class * extends android.app.Application
-keep public class * extends android.app.MapActivity
-keep public class * extends android.app.Service
-keep public class * extends android.content.BroadcastReceiver
-keep public class * extends android.content.ContentProvider

-libraryjars  libs/commons-io-2.2.jar
-libraryjars  libs/gson-2.2.2.jar
-keep public class org.apache.commons.io.**
-keep public class com.google.gson.**
-keep public class com.google.gson.** {public private protected *;}

##---------------Begin: proguard configuration for Gson ----------
-keepattributes *Annotation*,Signature
-keep class com.mypackage.ActivityMonitor.ClassMultiPoints.** { *; }
-keep public class com.mypackage.ActivityMonitor$ClassMultiPoints     { public protected *; }
-keep public class com.mypackage.ActivityMonitor$ClassMultiPoints$ClassPoints { public protected *; }
-keep public class com.mypackage.ActivityMonitor$ClassMultiPoints$ClassPoints$ClassPoint { public protected *; }
# To support Enum type of class members
-keepclassmembers enum * { *; } 
##---------------End: proguard configuration for Gson ----------

另外，我不在类中使用@SerializedName("message")，上面的配置在没有序列化的情况下可以正常工作

Answer 4

您使用了一个内置的@Keep注释，请参考此link

Answer 5

如果你像我一样使用@Expose注释，你可以告诉ProGuard用它注释任何字段：

# keep anything annotated with @Expose
-keepclassmembers public class * {
    @com.google.gson.annotations.Expose *;
}
# Also keep classes that @Expose everything
-keep @com.google.gson.annotations.Expose public class *

Answer 6

要从混淆中排除类，请保留InnerClass的属性，保留类并保留类的类成员，例如

-keepattributes InnerClasses
 -keep class com.yourproject.YourClass**
 -keepclassmembers class com.yourproject.YourClass** {
    *;
 }

有关详细信息http://proguard.sourceforge.net/manual/examples.html