关于android代码混淆

有关于android代码混淆，网上的文章很多，我这里要说的是网上找不到的内容。

大家在项目中一般都会打印日志，可以记录代码哪个类的哪一行出了什么问题。但是代码混淆之后，你会发现，原本会显示的那一行代码，例如com.example.data.userinfo.getname 会变成com.example.data.a.a。 是不是很头疼，这样的维护日志如果发给你，怎么看问题出在哪里了。

笔者最近就遇到了这种头疼的问题，经过查看谷歌官网之后，发现谷歌早就想到了，而且已经给我们做好了相关的工作，呵呵。 再次感叹谷歌的强大！

不说废话了，省得有些人又要喊，问题解决了，还卖关子，不给具体的过程，其实很简单，如下：

工程经过签名和代码混淆之后，Eclipse会在工程的根目录下生成proguard\mapping.txt，这个文件就是每个类混淆之前和混淆之后的对照表。例如上面的例子，就会在文件中生成这样一行 

com.example.data.userinfo -> com.example.data.a:

大家只需要在这个文件里面ctrl f就好了。

      下面讲讲gson类如何跳过混淆，

     在相关配置文件(不知道如何混淆代码的，请自行百度)中增加

-keep class * implements java.io.Serializable{*; }

-dontwarn com.google.gson.**
-keep class com.google.gson.**{*; }

  然后所有的jsondata类都实现Serializable接口即可。笔者亲测，可用 下面贴上proguard-android.txt文件，以供参考

 # This is a configuration file for ProGuard.
# http://proguard.sourceforge.net/index.html#manual/usage.html


-dontusemixedcaseclassnames
-dontskipnonpubliclibraryclasses
-verbose


# Optimization is turned off by default. Dex does not like code run
# through the ProGuard optimize and preverify steps (and performs some
# of these optimizations on its own).
-dontoptimize
-dontpreverify
# Note that if you want to enable optimization, you cannot just
# include optimization flags in your own project configuration file;
# instead you will need to point to the
# "proguard-android-optimize.txt" file instead of this one from your
# project.properties file.


-keepattributes *Annotation*
-keep public class com.google.vending.licensing.ILicensingService
-keep public class com.android.vending.licensing.ILicensingService


# For native methods, see http://proguard.sourceforge.net/manual/examples.html#native
-keepclasseswithmembernames class * {
    native <methods>;
}


# keep setters in Views so that animations can still work.
# see http://proguard.sourceforge.net/manual/examples.html#beans
-keepclassmembers public class * extends android.view.View {
   void set*(***);
   *** get*();
}


# We want to keep methods in Activity that could be used in the XML attribute onClick
-keepclassmembers class * extends android.app.Activity {
   public void *(android.view.View);
}


# For enumeration classes, see http://proguard.sourceforge.net/manual/examples.html#enumerations
-keepclassmembers enum * {
    public static **[] values();
    public static ** valueOf(java.lang.String);
}


-keep class * implements android.os.Parcelable {
  public static final android.os.Parcelable$Creator *;
}


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


# The support library contains references to newer platform versions.
# Don't warn about those in case this app is linking against an older
# platform version.  We know about them, and they are safe.


# -keepclassmembers class * implements java.io.Serializable {
#     static final long serialVersionUID;
#     private 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();
#     public <fields>;
# }


-keep class * implements java.io.Serializable{*; }


-dontwarn android.support.**
-keep class android.support.**{*; }


-dontwarn org.apache.james.mime4j.**
-keep class org.apache.james.mime4j.**{*; }


-dontwarn android.annotation.**
-keep class android.annotation.**{*; }


-dontwarn org.apache.http.entity.mime.**
-keep class org.apache.http.entity.mime.**{*; }


-dontwarn org.achartengine.**
-keep class org.achartengine.**{*; }


-dontwarn com.stericson.**
-keep class com.stericson.**{*; }


-dontwarn com.baidu.**
-keep class com.baidu.**{*; }


-dontwarn com.google.gson.**
-keep class com.google.gson.**{*; }


-dontwarn android.**
-keep class android.**{*; }


-dontwarn com.android.**
-keep class com.android.**{*; }


-dontwarn com.google.android.**
-keep class com.google.android.**{*; }


-dontwarn javax.microedition.**
-keep class javax.microedition.**{*; }