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

ProGuard is a free Java Class file shrinker, optimizer, obfuscator, 
and preverifier. It detects and removes unused classes, fields, methods,
 and attributes. It optimizes bytecode and removes unused instructions. 
It renames the remaining classes, fields, and methods using short meaningless names. 
Finally, it preverifies the processed code for Java 6 or higher, or for Java Micro Edition.

-optimizationpasses 5

-dontusemixedcaseclassnames

-dontskipnonpubliclibraryclasses

-dontskipnonpubliclibraryclassmembers

-dontpreverify

-verbose
-printmapping proguardMapping.txt

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

-keepattributes *Annotation*,InnerClasses

-keepattributes Signature

-keepattributes SourceFile,LineNumberTable

-keep class XXXX

-keepclasseswithmembers class XXXX

#-------------------------------------------定制化区域----------------------------------------------
#---------------------------------1.实体类---------------------------------


#---------------------------------2.第三方包-------------------------------

 

#---------------------------------3.与js互相调用的类------------------------

 

#---------------------------------4.反射相关的类和方法-----------------------

 

#-------------------------------------------基本不用动区域--------------------------------------------
#---------------------------------基本指令区----------------------------------
-optimizationpasses 5
-dontskipnonpubliclibraryclassmembers
-printmapping proguardMapping.txt
-optimizations !code/simplification/cast,!field/*,!class/merging/*
-keepattributes *Annotation*,InnerClasses
-keepattributes Signature
-keepattributes SourceFile,LineNumberTable
#----------------------------------------------------------------------------

#---------------------------------默认保留区---------------------------------
-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 * extends android.view.View
-keep public class com.android.vending.licensing.ILicensingService
-keep class android.support.** {*;}

-keep public class * extends android.view.View{
  *** get*();
  void set*(***);
  public <init>(android.content.Context);
  public <init>(android.content.Context, android.util.AttributeSet);
  public <init>(android.content.Context, android.util.AttributeSet, int);
}
-keepclasseswithmembers class * {
  public <init>(android.content.Context, android.util.AttributeSet);
  public <init>(android.content.Context, android.util.AttributeSet, int);
}
-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();
}
-keep class **.R$* {
 *;
}
-keepclassmembers class * {
  void *(**On*Event);
}

#---------------------------------webview------------------------------------
-keepclassmembers class fqcn.of.javascript.interface.for.Webview {
  public *;
}
-keepclassmembers class * extends android.webkit.WebViewClient {
  public void *(android.webkit.WebView, java.lang.String, android.graphics.Bitmap);
  public boolean *(android.webkit.WebView, java.lang.String);
}
-keepclassmembers class * extends android.webkit.WebViewClient {
  public void *(android.webkit.WebView, jav.lang.String);
}
#------------------------------------------------------------------------------------

-keep class 你的实体类所在的包.* { ; }

#log4j
-libraryjars log4j-1.2.17.jar
-dontwarn org.apache.log4j.**
-keep class org.apache.log4j.** { *;}

-keep class 你的类所在的包.** { *; }

-keepclasseswithmembers class 你的类所在的包.父类$子类 { <methods>; }

-keep class 你的类所在的包.** { *; }