我正在为Android开发应用程序并使用Proguard来混淆代码。
目前我正在使用ProGuard配置：
-optimizationpasses 5
-dontusemixedcaseclassnames
-dontskipnonpubliclibraryclasses
-dontpreverify
-verbose
-optimizations !code/simplification/arithmetic,!field/*,!class/merging/*
-keep public class * extends android.app.Activity
-keep public class * extends android.app.Application
-keep public class * extends android.app.Service
-keep public class * extends android.content.BroadcastReceiver
-keep public class * extends android.content.ContentProvider
-keep public class com.android.vending.licensing.ILicensingService
要维护布局XML上使用的自定义组件名称：
-keep public class custom.components.**
要删除调试日志：
-assumenosideeffects class android.util.Log {
public static *** d(...);
public static *** v(...);
}
为了避免更改布局onClick上调用的方法名称：
-keepclassmembers class * {
public void onClickButton1(android.view.View);
public void onClickButton2(android.view.View);
public void onClickButton3(android.view.View);
}
-keepclasseswithmembernames class * {
native <methods>;
}
-keepclasseswithmembernames class * {
public <init>(android.content.Context, android.util.AttributeSet);
}
-keepclasseswithmembernames class * {
public <init>(android.content.Context, android.util.AttributeSet, int);
}
-keepclassmembers enum * {
public static **[] values();
public static ** valueOf(java.lang.String);
}
-keep class * implements android.os.Parcelable {
public static final android.os.Parcelable$Creator *;
}
问题是（是）：
是否建议使用其他标签？为什么和为什么？
可以对proguard.cfg文件发表评论吗？我想对一些行正在做什么的评论，以便其他开发人员不怀疑我为什么添加。
同样在proguard中，是否可以维护文件的评论标题（具有版权）？如果不是，或者这不是一个好的政策，我应该在哪里添加版权？
Android SDK（r20或更高版本）
请检查project.properties中提到的预定义proguard.config
proguard.config=${sdk.dir}/tools/proguard/proguard-android.txt
更多信息：http://proguard.sourceforge.net/manual/examples.html#androidapplication
在这里，您可以检查我不断更新的proguard“默认”文件：https://medium.com/code-procedure-and-rants/android-my-standard-proguard-ffeceaf65521
Android SDK（r19或更低版本）
基于我的回答Enabling ProGuard in Eclipse for Android我最终得到了这个通用文件。我添加了评论以记住每行的用途。它可能会帮助那里的人，所以这里是：
-optimizationpasses 5
#When not preverifing in a case-insensitive filing system, such as Windows. Because this tool unpacks your processed jars, you should then use:
-dontusemixedcaseclassnames
#Specifies not to ignore non-public library classes. As of version 4.5, this is the default setting
-dontskipnonpubliclibraryclasses
#Preverification is irrelevant for the dex compiler and the Dalvik VM, so we can switch it off with the -dontpreverify option.
-dontpreverify
#Specifies to write out some more information during processing. If the program terminates with an exception, this option will print out the entire stack trace, instead of just the exception message.
-verbose
#The -optimizations option disables some arithmetic simplifications that Dalvik 1.0 and 1.5 can't handle. Note that the Dalvik VM also can't handle aggressive overloading (of static fields).
#To understand or change this check http://proguard.sourceforge.net/index.html#/manual/optimizations.html
-optimizations !code/simplification/arithmetic,!field/*,!class/merging/*
#To repackage classes on a single package
#-repackageclasses ''
#Uncomment if using annotations to keep them.
#-keepattributes *Annotation*
#Keep classes that are referenced on the AndroidManifest
-keep public class * extends android.app.Activity
-keep public class * extends android.app.Application
-keep public class * extends android.app.Service
-keep public class * extends android.content.BroadcastReceiver
-keep public class * extends android.content.ContentProvider
-keep public class com.android.vending.licensing.ILicensingService
#To remove debug logs:
-assumenosideeffects class android.util.Log {
public static *** d(...);
public static *** v(...);
}
#To avoid changing names of methods invoked on layout's onClick.
# Uncomment and add specific method names if using onClick on layouts
#-keepclassmembers class * {
# public void onClickButton(android.view.View);
#}
#Maintain java native methods
-keepclasseswithmembernames class * {
native <methods>;
}
#To maintain custom components names that are used on layouts XML.
#Uncomment if having any problem with the approach below
#-keep public class custom.components.package.and.name.**
#To maintain custom components names that are used on layouts XML:
-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);
}
#Maintain enums
-keepclassmembers enum * {
public static **[] values();
public static ** valueOf(java.lang.String);
}
#To keep parcelable classes (to serialize - deserialize objects to sent through Intents)
-keep class * implements android.os.Parcelable {
public static final android.os.Parcelable$Creator *;
}
#Keep the R
-keepclassmembers class **.R$* {
public static <fields>;
}
###### ADDITIONAL OPTIONS NOT USED NORMALLY
#To keep callback calls. Uncomment if using any
#http://proguard.sourceforge.net/index.html#/manual/examples.html#callback
#-keep class mypackage.MyCallbackClass {
# void myCallbackMethod(java.lang.String);
#}
#Uncomment if using Serializable
#-keepclassmembers class * implements java.io.Serializable {
# 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();
#}
对于使用Ant或Eclipse的标准版本，Android SDK（r20或更高版本）已经提供了一个合适的配置，由project.properties文件中的属性proguard.config引用（正如Michal在他的回答中指出的那样）。在旧版本中，您始终必须指定自己的完整配置，因此较旧的建议（如第一个答案）可能会导致一些混淆。
对于自定义构建，您可以在ProGuard manual> Examples> A complete Android application中找到最新推荐的配置。 Proguard distribution还包含一个示例文件examples / android.pro
值得注意的是，您可能希望在View扩展中保留注释和设置器。
您可以在哈希字符'＃'之后添加注释，如示例文件中广泛使用的那样。
在名为project.properties的项目文件中，设置以下值：
proguard.config=${sdk.dir}/tools/proguard/proguard-android.txt
这将采用Android SDK中最新版本的Proguard设置。