Android code obfuscation

Android code obfuscation

Add in build.grandle, where the rules are written in proguard-rules.pro, or you can customize a file to replace it, such as proguard-project.txt commonly used by eclipse

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

Add the following code to proguard-rules.pro, it can basically cover all

-optimizationpasses 5          # 指定代码的压缩级别
-dontusemixedcaseclassnames   # 是否使用大小写混合
-dontpreverify           # 混淆时是否做预校验
-verbose                # 混淆时是否记录日志

-optimizations !code/simplification/arithmetic,!field/*,!class/merging/*  # 混淆时所采用的算法

-keep public class * extends android.app.Activity      # 保持哪些类不被混淆
-keep public class * extends android.app.Application   # 保持哪些类不被混淆
-keep public class * extends android.app.Service       # 保持哪些类不被混淆
-keep public class * extends android.content.BroadcastReceiver  # 保持哪些类不被混淆
-keep public class * extends android.content.ContentProvider    # 保持哪些类不被混淆
-keep public class * extends android.app.backup.BackupAgentHelper # 保持哪些类不被混淆
-keep public class * extends android.preference.Preference        # 保持哪些类不被混淆
-keep public class com.android.vending.licensing.ILicensingService    # 保持哪些类不被混淆

-keepclasseswithmembernames class * {  # 保持 native 方法不被混淆
    native <methods>;
}
-keepclasseswithmembers class * {   # 保持自定义控件类不被混淆
    public <init>(android.content.Context, android.util.AttributeSet);
}
-keepclasseswithmembers class * {# 保持自定义控件类不被混淆
    public <init>(android.content.Context, android.util.AttributeSet, int);
}
-keepclassmembers class * extends android.app.Activity { # 保持自定义控件类不被混淆   
    public void *(android.view.View);
}
-keepclassmembers enum * {     # 保持枚举 enum 类不被混淆    
    public static **[] values();    
    public static ** valueOf(java.lang.String);
}
-keep class * implements android.os.Parcelable { # 保持 Parcelable 不被混淆  
    public static final android.os.Parcelable$Creator *;
}