Component uniform obfuscation scheme

Open the confusion

buildTypes {
    release {
        minifyEnabled true. }}Copy the code

Component configuration

Difference between consumerProguardFiles and proguardFiles:

• The ProGuard configured on consumerProguardFiles will enter the AAR, while the ProGuard configured on proguardFiles will not
• The proguardFiles configuration only applies to the library code. It takes effect when the aar is compiled and published. When the library relies on the APP module as a module, The ProGuard configured by consumerProguardFiles will be appended to the App module’s ProGuard configuration

The component obfuscation rules are written in the proguard-rules.pro file

Ask the component owner to write specific obfuscation rules

android {
    ...
    defaultConfig {
        ...
        consumerProguardFiles "consumer-rules.pro"
    }
    
    buildTypes {
        release {
            minifyEnabled true
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'}}}Copy the code

Common commands

For more usage, see the official website

[hold command] [class] {[member]}Copy the code

“Class” represents a class-related qualification, and it will eventually locate some classes that meet that qualification. Its contents can be used:

• Concrete classes
• Access modifier (public, protected, private)
• Wildcard *, which matches characters of any length without the package name separator (.)
• Wildcard ** that matches any character length and contains the package name separator (.)
• Extends, which specifies the base class of a class
• Implement, matches a class that implements an interface
• $, inner class

“Member” represents a qualification related to a class member, and it will eventually locate some class member that meets that qualification. Its contents can be used:

• 
  matches all constructors
  
• 
  matches all member variables
  
• 
  Matches all methods
  
• Wildcard *, which matches characters of any length without the package name separator (.)
• Wildcard ** that matches any character length and contains the package name separator (.)
• The wildcard character is ***, which matches any parameter type
• … To match any type parameter of any length. Such as void test (…). We can match any void test(String a) or void test(int a, String b) method.
• Access modifier (public, protected, private)

General configuration

Generally written in the main project

# -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- basic instruction area -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- # code confusion, compression ratio between 0 ~ 7, the default is 5, - OptimizationPasses 5 # does not use case blending when blending Blend to class called lowercase - dontusemixedcaseclassnames # specified not to ignore the public library classes - dontskipnonpubliclibraryclasses # specified not to ignore the class members of the public library - dontskipnonpubliclibraryclassmembers # after this sentence can confuse our project # generate mapping file contains the name of the class - > confusion after the mapping relationship between the name of the class - verbose # don't do check in advance, Preverify is one of the four steps in ProGuard. Android doesn't require preverify, and removing it will speed up confusion. -dontpreverify -printmapping proguardmapping. TXT # keep annotations without obfuscation -keepattributes *Annotation*,InnerClasses # avoid obfuscation of generics - keepattributes Signature # when they throw an exception code line number - keepattributes SourceFile, LineNumberTable # specified confusion is to use an algorithm, # Optimizations is an algorithm recommended by Google and is not subject to change -optimizations! code/simplification/cast,! field/*,! class/merging/* # ---------------------------------------------------------------------------- # -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- the default reserves -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 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.app.View -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 * extends java.lang.Throwable {*; } -keep public class * extends java.lang.Exception {*; } -keep class android.support.** {*; } # -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- don't optimize Parcelable implementation class -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- keep class implements android.os.Parcelable {*; } # -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- don't optimize the serialization implementation class -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- keep class implements java.io.Serializable { *; } -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(); }Copy the code

The sample

• Do not confuse a class

-keep public class com.kotlin.Test {*; }Copy the code

• Do not confuse all classes of a package

-keep public class com.kotlin. * *{*; }Copy the code

• Do not confuse subclasses of a class

-keep public class * extends com.kotlin.Test {*; }Copy the code

• Do not confuse the inner classes of a class

-keep class com.kotlin.Test$* {*; }Copy the code

• Do not confuse the implementation class of an interface

-keep public class * implements com.kotlin.Callback {*; }Copy the code

• Do not confuse the constructor of a class

-keepclassmembers class com.kotlin.Test {
    public <init> (); }Copy the code

• Do not confuse specific methods of a class

-keepclassmembers class com.kotlin.Test {
    public void test(java.lang.String);
}
Copy the code