Android 代码混淆语法

指定代码的压缩级别

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-optimizationpasses 5

包明不混合大小写

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-dontusemixedcaseclassnames

不去忽略非公共的库类

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-dontskipnonpubliclibraryclasses

优化不优化输入的类文件

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-dontoptimize

预校验

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-dontpreverify

混淆时是否记录日志

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-verbose

混淆时所采用的算法

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-optimizations !code/simplification/arithmetic,!field/*,!class/merging/*

保护注解

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-keepattributes *Annotation*

保持哪些类不被混淆

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-keep public class * extends android.app.Fragment
-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.android.vending.licensing.ILicensingService

如果有引用v4包可以添加下面这行

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-keep public class * extends android.support.v4.app.Fragment

apk 包内所有 class 的内部结构

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-dump class_files.txt

未混淆的类和成员

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-printseeds seeds.txt

列出从 apk 中删除的代码

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-printusage unused.txt

混淆前后的映射

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-printmapping mapping.txt

保持 native 方法不被混淆

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-keepclasseswithmembernames class * {
	native \<methods\>;
}

保持自定义控件类不被混淆

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

保持自定义控件类不被混淆

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

保持自定义控件类不被混淆

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-keepclassmembers class * extends android.app.Activity {
   public void *(android.view.View);
}

保持 Parcelable 不被混淆

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

保持 Serializable 不被混淆

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-keepnames class * implements java.io.Serializable

保持 Serializable 不被混淆并且enum 类也不被混淆

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-keepclassmembers class * implements java.io.Serializable {
	static final long serialVersionUID;
	private static final java.io.ObjectStreamField[]() serialPersistentFields;
	!static !transient \<fields\>;
	!private \<fields\>;
	!private \<methods\>;
	private void writeObject(java.io.ObjectOutputStream);
	private void readObject(java.io.ObjectInputStream);
	java.lang.Object writeReplace();
	java.lang.Object readResolve();
}

不混淆资源类

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-keepclassmembers class **.R$* {
	public static \<fields\>;
}
-keep class **.R$* -keep class org.apache.http.** 
-keep class android.support.v7.widget.**{*;}
-keep class android.support.design.**{*;}
-keep public class android.support.v7.widget.LinearLayoutManager

-keep public class * extends android.support.v7.widget.CardView$LayoutManager{
	public \<init\>(...);
}

support-v4

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-dontwarn android.support.v4.** 
-keep class android.support.v4.app.** { *; }
-keep interface android.support.v4.app.** { *; }

support-v7

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-dontwarn android.support.v7.** 
-keep class android.support.v7.internal.** { *; }
-keep interface android.support.v7.internal.** { *; }