防止 ProGuard 的类成员名称混淆

我有带子类的 ClassMultiPoint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;
}
}
}

我将从解析 GSON中得到对象 oPoints的值:

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

我试着用 oPoints.message。

当我运行我的应用程序没有 proguard应用程序运行成功。 当我用 proguard运行我的应用程序时，我的应用程序崩溃了。

我认为问题是: proguard将属性 'oPoints.message'重命名为短 'a'。

我尝试保持方法和属性的名称不变，但是 proguard会重命名它:

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 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/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 android.view.View {
public <init>(android.content.Context);
public <init>(android.content.Context, android.util.AttributeSet);
public <init>(android.content.Context, android.util.AttributeSet, int);
public void set*(...);
}


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


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


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


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


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

什么是正确的方法来保持我的一个(静态)类的方法和属性的名称？

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小开

If you dont want your class members to be obfuscated then use SerializedName annotation provided by Gson. For example:

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


...


}

Moreover, make sure you do add proper proguard configuration for Gson library too. For example:

##---------------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 ----------

For more info read this.

小开
最佳答案

Thanks Waqas!

I find solution for my case:

-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 ----------

Also I don't use @SerializedName("message") in my class, aboved config work fine without serialization.

小开

I also found I need to -keepclassmembers when using Dexguard's optimise option. Without this several of my model objects failed to deserialise 

##---------------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.** { *; }
小开

If you use the @Expose annotation like I do, you can tell ProGuard to keep any field annotated with it:

# 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 *
小开

To exclude your class from obfuscation, Keep the attributes of InnerClasses, keep your class and keep the class members of the class eg.

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

For more information http://proguard.sourceforge.net/manual/examples.html

小开

There is a built-in @Keep annotation that you use, please refer this link

小开

Proguard 6.1 cannot handle interfaces with generics in a library. See the bug report here: https://sourceforge.net/p/proguard/bugs/765/

小开

You can skip obfuscation in all Request type classes

open class Request
data class Example(val name: String) : Request()

proguard-rules.pro

-keepclassmembers class * extends <your-package-name>.util.ws.Request { *; }

GL

小开

This thread has amazing answers already, however do not forget to add

-keep public class * extends java.lang.Exception

otherwise, all the crashes will be obfuscated when you see them on firebase.

See official docs here : https://firebase.google.com/docs/crashlytics/get-deobfuscated-reports?platform=android


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