Android代码混淆的写法总结

2019-10-22 18:14:35

字体：大中小

来源：转载

供稿：网友

Apk文件被反编译出来能被获取到里面的代码。对于这种情况，我们可以对项目代码进行混淆，随机生成难理解的类名，方法名，让代码难以阅读，加大功能被盗取的难度。混淆可以起到压缩Apk，混淆文件，预检，优化的作用。

1. 使用方式，在gradle文件中设置minifyEnabled为true即可开启混淆

buildTypes {    release {      minifyEnabled ture //是否开启代码混淆      proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'    }  }

混淆内容在proguard-android.txt文件中写。

2. 混淆设置参数

-optimizationpasses 4 代码混淆的压缩比例，值介于0-7

-dontusemixedcaseclassnames 混淆后类型都为小写

-dontskipnonpubliclibraryclasses 不去忽略非公共的库类

-dontoptimize 不优化输入的类文件

-dontpreverify 不做预校验的操作

-ignorewarnings 忽略警告

-verbose 混淆时是否记录日志

-keepattributes Annotation 保护注解

-printmapping proguardMapping.txt 生成原类名和混淆后的类名的映射文件

-optimizations !code/simplification/cast,!field/ ,!class/merging/ 指定混淆是采用的算法

3. 保持不被混淆的设置

保持实体类不混淆

-keep class 你的实体类所在的包.** { *; }

保持四大组件，Application，Fragment不混淆

-keep public class * extends android.app.Application-keep public class * extends android.app.Activity-keep public class * extends android.app.Fragment-keep public class * extends android.support.v4.app.Fragment-keep public class * extends android.app.Fragment-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.preference.Preference

保持 native 方法不被混淆

-keepclasseswithmembernames class * {   native <methods>;}

保持枚举enum类不被混淆

-keepclassmembers enum * {   public static **[] values();  public static ** valueOf(java.lang.String);}

保持 Parcelable 不被混淆

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

保持第三方包不混淆，比如这里用到微信、支付宝支付第三方

#支付宝混淆-keep class com.alipay.android.app.IAlixPay{*;}-keep class com.alipay.android.app.IAlixPay$Stub{*;}-keep class com.alipay.android.app.IRemoteServiceCallback{*;}-keep class com.alipay.android.app.IRemoteServiceCallback$Stub{*;}-keep class com.alipay.sdk.app.PayTask{ public *;}-keep class com.alipay.sdk.app.AuthTask{ public *;}#微信支付混淆-keep class com.tencent.mm.opensdk.** {*;}-keep class com.tencent.wxop.** {*;}-keep class com.tencent.mm.sdk.** {*;}

4. 完整混淆示例：

#指定代码的压缩级别-optimizationpasses 5#包名不混合大小写-dontusemixedcaseclassnames#不去忽略非公共的库类-dontskipnonpubliclibraryclasses #优化 不优化输入的类文件-dontoptimize #预校验-dontpreverify #混淆时是否记录日志-verbose#忽略警告-ignorewarning#保护注解-keepattributes *Annotation*-keep public class * extends android.app.Application-keep public class * extends android.app.Activity-keep public class * extends android.app.Fragment-keep public class * extends android.support.v4.app.Fragment-keep public class * extends android.app.Fragment-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.preference.Preference-keepclasseswithmembernames class * {  native <methods>;}-keepclassmembers class * extends android.app.Activity {  public void *(android.view.View);}-keepclassmembers enum * {  public static **[] values();  public static ** valueOf(java.lang.String);}-keep class * implements android.os.Parcelable { public static final android.os.Parcelable$Creator *;}-keepclassmembers class **.R$* {  *;}-keep class * extends android.view.View{*;}-keep class * extends android.app.Dialog{*;}-keep class * implements java.io.Serializable{*;}#butterknife-keep class butterknife.** { *; }-dontwarn butterknife.internal.**-keep class **$$ViewBinder { *; }#volley-dontwarn com.android.volley.**-keep class com.android.volley.**{*;}#fastjson-dontwarn com.alibaba.fastjson.**-keep class com.alibaba.fastjson.**{*;}#happy-dns-dontwarn com.qiniu.android.dns.**-keep class com.qiniu.android.dns.**{*;}#okhttp-dontwarn com.squareup.okhttp.**-keep class com.squareup.okhttp.**{*;}-keep class okio.**{*;}-keep class android.net.**{*;}-keep class com.android.internal.http.multipart.**{*;}-keep class org.apache.**{*;}-keep class com.qiniu.android.**{*;}-keep class android.support.annotation.**{*;}-keep class com.squareup.wire.**{*;}-keep class com.ant.liao.**{*;}#腾讯-keep class com.tencent.**{*;}-keep class u.aly.**{*;}#ImageLoader-keep class com.nostra13.universalimageloader.**{*;}#友盟-dontwarn com.umeng.**-keep class com.umeng.**{*;}#pulltorefresh-keep class com.handmark.pulltorefresh.** { *; }-keep class android.support.v4.** { *;}-keep public class * extends android.support.v4.**{ public protected *;}-keep class android.support.v7.** {*;}

自己试着用一个简单的项目加入混淆，打个包试试效果吧。

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持VEVB武林网。

注：相关教程知识阅读请移步到Android开发频道。

上一篇：Android使用Handler实现定时器与倒计时器功能

下一篇：在Android中使用Anntation来代替ENUM的方法