Android：Proguard的推薦配置是什么？

Question

我正在為Android開發應用程序並使用Proguard來混淆代碼。

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

要維護布局XML上使用的自定義組件名稱：

-keep public class custom.components.**

要刪除調試日志：

-assumenosideeffects class android.util.Log {
    public static *** d(...);
    public static *** v(...);
}

為了避免更改布局onClick上調用的方法名稱：

-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 *;
}

問題是（是）：

是否建議使用其他標簽？ 為什么和為什么？

可以對proguard.cfg文件發表評論嗎？ 我想對一些行正在做什么的評論，以便其他開發人員不懷疑我為什么添加。

同樣在proguard中，是否可以維護文件的評論標題（具有版權）？ 如果不是，或者這不是一個好的政策，我應該在哪里添加版權？

Answer 1

Android SDK（r20或更高版本）

請檢查project.properties中提到的預定義proguard.config

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

更多信息： http ： //proguard.sourceforge.net/manual/examples.html#androidapplication

在這里，您可以查看我不斷更新的proguard“默認”文件 ： https ： //medium.com/code-procedure-and-rants/android-my-standard-proguard-ffeceaf65521

---

Android SDK（r19或更低版本）

根據我的回答在Eclipse for Android for Android中啟用ProGuard我最終得到了這個通用文件。 我添加了評論以記住每行的用途。 它可能會幫助那里的人，所以這里是：

-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();
#}

Answer 2

對於使用Ant或Eclipse的標准版本 ，Android SDK（r20或更高版本）已經提供了一個合適的配置，由project.properties文件中的屬性proguard.config引用（正如Michal在他的回答中指出的那樣）。 在舊版本中，您始終必須指定自己的完整配置，因此較舊的建議（如第一個答案）可能會導致一些混淆。

對於自定義版本 ，您可以在ProGuard手冊 > 示例 > 完整的Android應用程序中找到最新推薦的配置。 Proguard發行版還包含一個示例文件examples / android.pro

值得注意的是，您可能希望在View擴展中保留注釋和設置器。

您可以在哈希字符'＃'之后添加注釋，如示例文件中廣泛使用的那樣。

Answer 3

在名為project.properties的項目文件中，設置以下值：

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

這將采用Android SDK中最新版本的Proguard設置。