在Eclipse中为Android启用ProGuard

Question

关于ProGuard for Android的新文档说,要在项目主目录的default.properties文件中添加一行.但是,在打开此文件时,我在顶部阅读:

# This file is automatically generated by Android Tools. 
# Do not modify this file -- YOUR CHANGES WILL BE ERASED! 

我错过了什么吗？

另外,有没有办法让ProGuard仅用于Eclipse的生产构建(即,在导出成品时)？

Answer 1

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Gradle上:

buildTypes {
 release {
            minifyEnabled true
            shrinkResources true
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'

            ...
  }
 }

在这里,您可以查看我不断更新的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)

您可以将其添加到default.properties.到目前为止,我一直在手动添加而没有问题.

如果添加以下行:

proguard.config=proguard.cfg

如上所述,它只会在导出已签名的应用程序时使用ProGuard(Android Tools => Export Signed Application)

如果您在Android 2.3之前使用SDK启动项目,proguard.cfg则不会创建该文件(default.properties在2.3> 旁边).

要启用它的自动创建,只需更新到Android 2.3的SDK并使用现有源(这是您当前拥有的项目的源)创建一个新项目.

自动proguard.cfg填充将被创建.

如果仍然,您想手动创建它,它应该包含:

-dontusemixedcaseclassnames
-dontskipnonpubliclibraryclasses
-dontwarn android.support.**
-verbose

-dontoptimize
-dontpreverify


-keepattributes *Annotation* 
-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.google.vending.licensing.ILicensingService
-keep public class com.android.vending.licensing.ILicensingService
-keep public class * extends android.support.v4.app.Fragment
-keep public class * extends android.app.Fragment

-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 public class * extends android.view.View {
  void set*(***);
  *** get*();
 }

-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>;
}

我想我已经回答了上面的所有问题.

更新:

逐行说明:

#Use 5 step of optimization 
#-optimizationpasses 5

#When not preverifing in a case-insensitive filing system, such as Windows. This tool will unpack your processed jars,(if using windows you should then use):
-dontusemixedcaseclassnames

#Specifies not to ignore non-public library classes. As of version 4.5, this is the default setting
-dontskipnonpubliclibraryclasses

# 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

-dontwarn android.support.**

#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/*

# 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.

#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 * extends android.app.backup.BackupAgentHelper
-keep public class * extends android.preference.Preference
-keep public class com.google.vending.licensing.ILicensingService
-keep public class com.android.vending.licensing.ILicensingService
#Compatibility library 
-keep public class * extends android.support.v4.app.Fragment
-keep public class * extends android.app.Fragment

#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.**

# 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*();
}

#To remove debug logs:
-assumenosideeffects class android.util.Log {
    public static *** d(...);
    public static *** v(...);
    public static *** w(...);
}

#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:
-keep public class * extends android.view.View {
    public <init>(android.content.Context);
}
-keep public class * extends android.view.View {
    public <init>(android.content.Context, android.util.AttributeSet);
}
-keep public class * extends android.view.View {
    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();
#}

更新2:

在最近的ADT/Proguard中使用-keepclasseswithmembers而不是-keepclasseswithmembernames

Answer 2

只是一个后续工作,因为我正在寻找相同的东西 - 这里的答案已经过时 - 最近基础proguard配置在sdk目录中 - 所以你只需要把它放到你的project.properties:

proguard.config=${sdk.dir}/tools/proguard/proguard-android.txt

如果要进行项目特定的修改,请创建一个proguard-project.txt并将该行更改为:

proguard.config=${sdk.dir}/tools/proguard/proguard-android.txt:proguard-project.txt 

Answer 3

至少从ADT 16开始,您确实可以添加该行project.properties,并将保留该行.您可以尝试更改目标SDK版本,并查看project.properties相应的更新,但添加的行仍然存在.所以,我认为警告措辞严厉; 它意味着说文件中的设置target会被项目设置覆盖,而不是反之亦然.