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Android之如何混淆代码和相关配置
昨天，客户想看一下目前项目开发到什么程度了，于是需要将项目签名打包成apk，结果打包的时候出错了，吃惊，什么情况。等成功打包以后，安装起来发现部分功能又报错了，囧，所幸最后还是解决了。在这里记录一下遇到的错误和解决方法。
1.如何混淆
将代码混淆起来，这样可以防止在apk被人反编译后而被别人直接看到源码，混淆方法很简单，当我们创建好项目时，已经自动为我们生成了混淆文件，老版的ADT生成的是proguard.cfg文件，而新版的ADT则是以proguard-project.txt替代了它。两则配置方法一致，只要在project.properties文件中引入就好。前者是将project.properties的“# proguard.config=${sdk.dir}/tools/proguard/proguard-android.txt:proguard-project.txt”的“#”去掉就可以了，后者加入一句proguard.config=proguard.cfg即可。
2.如何防止第三方jar包混淆
我使用的混淆文件是proguard.cfg。
开头提到的第一个打包失败的原因是因为引入了第三方jar包。
所报错误如下
1 Proguard returned with error code 1. See console 2 Note: there were 1465 duplicate class definitions. 3 Warning: library class android.net.http.AndroidHttpClient extends or implements program class org.apache.http.client.HttpClient 4 Warning: org.apache.http.client.protocol.RequestAddCookies: can‘t find referenced class org.apache.commons.logging.LogFactory 5 Warning: org.apache.http.client.protocol.RequestAddCookies: can‘t find referenced class org.apache.commons.logging.LogFactory 6 Warning: org.apache.http.client.protocol.RequestAuthCache: can‘t find referenced class org.apache.commons.logging.LogFactory 7 Warning: org.apache.http.client.protocol.RequestAuthCache: can‘t find referenced class org.apache.commons.logging.LogFactory 8 Warning: org.apache.http.client.protocol.RequestAuthenticationBase: can‘t find referenced class org.apache.commons.logging.LogFactory 9 Warning: org.apache.http.client.protocol.RequestAuthenticationBase: can‘t find referenced class org.apache.commons.logging.LogFactory 10 Warning: org.apache.http.client.protocol.RequestClientConnControl: can‘t find referenced class org.apache.commons.logging.LogFactory 11 Warning: org.apache.http.client.protocol.RequestClientConnControl: can‘t find referenced class org.apache.commons.logging.LogFactory 12 Warning: org.apache.http.client.protocol.ResponseAuthCache: can‘t find referenced class org.apache.commons.logging.LogFactory 13 Warning: org.apache.http.client.protocol.ResponseAuthCache: can‘t find referenced class org.apache.commons.logging.LogFactory 14 Warning: org.apache.http.client.protocol.ResponseProcessCookies: can‘t find referenced class org.apache.commons.logging.LogFactory 15 Warning: org.apache.http.client.protocol.ResponseProcessCookies: can‘t find referenced class org.apache.commons.logging.LogFactory 16 Warning: org.apache.http.impl.auth.BasicScheme: can‘t find referenced class org.apache.commons.codec.binary.Base64 17 Warning: org.apache.http.impl.auth.BasicScheme: can‘t find referenced class org.apache.commons.codec.binary.Base64 18 Warning: org.apache.http.impl.auth.GGSSchemeBase: can‘t find referenced class org.apache.commons.logging.LogFactory 19 Warning: org.apache.http.impl.auth.GGSSchemeBase: can‘t find referenced class org.apache.commons.codec.binary.Base64 20 Warning: org.apache.http.impl.auth.GGSSchemeBase: can‘t find referenced class org.apache.commons.codec.binary.Base64 21 Warning: org.apache.http.impl.auth.GGSSchemeBase: can‘t find referenced class org.ietf.jgss.GSSManager 22 Warning: org.apache.http.impl.auth.GGSSchemeBase: can‘t find referenced class org.ietf.jgss.GSSName 23 Warning: org.apache.http.impl.auth.GGSSchemeBase: can‘t find referenced class org.ietf.jgss.GSSManager 24 Warning: org.apache.http.impl.auth.GGSSchemeBase: can‘t find referenced class org.ietf.jgss.GSSName 25 Warning: org.apache.http.impl.auth.GGSSchemeBase: can‘t find referenced class org.ietf.jgss.GSSManager 26 Warning: org.apache.http.impl.auth.GGSSchemeBase: can‘t find referenced class org.ietf.jgss.GSSContext 27 Warning: org.apache.http.impl.auth.GGSSchemeBase: can‘t find referenced class org.ietf.jgss.GSSContext 28 Warning: org.apache.http.impl.auth.GGSSchemeBase: can‘t find referenced class org.ietf.jgss.GSSContext 29 Warning: org.apache.http.impl.auth.GGSSchemeBase: can‘t find referenced class org.ietf.jgss.GSSException 30 Warning: org.apache.http.impl.auth.GGSSchemeBase: can‘t find referenced class org.ietf.jgss.GSSException 31 Warning: org.apache.http.impl.auth.GGSSchemeBase: can‘t find referenced class org.ietf.jgss.GSSException 32 Warning: org.apache.http.impl.auth.GGSSchemeBase: can‘t find referenced class org.apache.commons.codec.binary.Base64 33 Warning: org.apache.http.impl.auth.GGSSchemeBase: can‘t find referenced class org.apache.commons.codec.binary.Base64 34 Warning: org.apache.http.impl.auth.GGSSchemeBase: can‘t find referenced class org.apache.commons.logging.LogFactory 35 Warning: org.apache.http.impl.auth.GGSSchemeBase: can‘t find referenced class org.ietf.jgss.GSSManager 36 Warning: org.apache.http.impl.auth.GGSSchemeBase: can‘t find referenced class org.ietf.jgss.GSSName 37 Warning: org.apache.http.impl.auth.GGSSchemeBase: can‘t find referenced class org.ietf.jgss.GSSContext 38 Warning: org.apache.http.impl.auth.GGSSchemeBase: can‘t find referenced class org.apache.commons.codec.binary.Base64 39 Warning: org.apache.http.impl.auth.GGSSchemeBase: can‘t find referenced class org.ietf.jgss.GSSManager 40 Warning: org.apache.http.impl.auth.GGSSchemeBase: can‘t find referenced class org.ietf.jgss.Oid 41 Warning: org.apache.http.impl.auth.GGSSchemeBase: can‘t find referenced class org.ietf.jgss.Oid 42 Warning: org.apache.http.impl.auth.GGSSchemeBase: can‘t find referenced class org.ietf.jgss.GSSManager 43 Warning: org.apache.http.impl.auth.GGSSchemeBase: can‘t find referenced class org.ietf.jgss.GSSName 44 Warning: org.apache.http.impl.auth.GGSSchemeBase: can‘t find referenced class org.ietf.jgss.GSSContext 45 Warning: org.apache.http.impl.auth.GGSSchemeBase: can‘t find referenced class org.ietf.jgss.GSSException 46 Warning: org.apache.http.impl.auth.KerberosScheme: can‘t find referenced class org.ietf.jgss.Oid 47 Warning: org.apache.http.impl.auth.KerberosScheme: can‘t find referenced class org.ietf.jgss.Oid 48 Warning: org.apache.http.impl.auth.KerberosScheme: can‘t find referenced class org.ietf.jgss.GSSException 49 Warning: org.apache.http.impl.auth.NTLMEngineImpl$NTLMMessage: can‘t find referenced class org.apache.commons.codec.binary.Base64 50 Warning: org.apache.http.impl.auth.NTLMEngineImpl$NTLMMessage: can‘t find referenced class org.apache.commons.codec.binary.Base64 51 Warning: org.apache.http.impl.auth.NTLMEngineImpl$NTLMMessage: can‘t find referenced class org.apache.commons.codec.binary.Base64 52 Warning: org.apache.http.impl.auth.NegotiateScheme: can‘t find referenced class org.apache.commons.logging.LogFactory 53 Warning: org.apache.http.impl.auth.NegotiateScheme: can‘t find referenced class org.ietf.jgss.Oid 54 Warning: org.apache.http.impl.auth.NegotiateScheme: can‘t find referenced class org.ietf.jgss.Oid 55 Warning: org.apache.http.impl.auth.NegotiateScheme: can‘t find referenced class org.ietf.jgss.GSSException 56 Warning: org.apache.http.impl.auth.NegotiateScheme: can‘t find referenced class org.ietf.jgss.GSSException 57 Warning: org.apache.http.impl.auth.NegotiateScheme: can‘t find referenced class org.apache.commons.logging.LogFactory 58 Warning: org.apache.http.impl.auth.NegotiateScheme: can‘t find referenced class org.ietf.jgss.GSSException 59 Warning: org.apache.http.impl.auth.NegotiateScheme: can‘t find referenced class org.ietf.jgss.Oid 60 Warning: org.apache.http.impl.auth.SPNegoScheme: can‘t find referenced class org.ietf.jgss.Oid 61 Warning: org.apache.http.impl.auth.SPNegoScheme: can‘t find referenced class org.ietf.jgss.Oid 62 Warning: org.apache.http.impl.auth.SPNegoScheme: can‘t find referenced class org.ietf.jgss.GSSException 63 Warning: org.apache.http.impl.client.AbstractAuthenticationHandler: can‘t find referenced class org.apache.commons.logging.LogFactory 64 Warning: org.apache.http.impl.client.AbstractAuthenticationHandler: can‘t find referenced class org.apache.commons.logging.LogFactory 65 Warning: org.apache.http.impl.client.AbstractHttpClient: can‘t find referenced class org.apache.commons.logging.LogFactory 66 Warning: org.apache.http.impl.client.AbstractHttpClient: can‘t find referenced class org.apache.commons.logging.LogFactory 67 Warning: org.apache.http.impl.client.AuthenticationStrategyAdaptor: can‘t find referenced class org.apache.commons.logging.LogFactory 68 Warning: org.apache.http.impl.client.AuthenticationStrategyAdaptor: can‘t find referenced class org.apache.commons.logging.LogFactory 69 Warning: org.apache.http.impl.client.AuthenticationStrategyImpl: can‘t find referenced class org.apache.commons.logging.LogFactory 70 Warning: org.apache.http.impl.client.AuthenticationStrategyImpl: can‘t find referenced class org.apache.commons.logging.LogFactory 71 Warning: org.apache.http.impl.client.AutoRetryHttpClient: can‘t find referenced class org.apache.commons.logging.LogFactory 72 Warning: org.apache.http.impl.client.AutoRetryHttpClient: can‘t find referenced class org.apache.commons.logging.LogFactory 73 Warning: org.apache.http.impl.client.DefaultRedirectHandler: can‘t find referenced class org.apache.commons.logging.LogFactory 74 Warning: org.apache.http.impl.client.DefaultRedirectHandler: can‘t find referenced class org.apache.commons.logging.LogFactory 75 Warning: org.apache.http.impl.client.DefaultRedirectStrategy: can‘t find referenced class org.apache.commons.logging.LogFactory 76 Warning: org.apache.http.impl.client.DefaultRedirectStrategy: can‘t find referenced class org.apache.commons.logging.LogFactory 77 Warning: org.apache.http.impl.client.DefaultRequestDirector: can‘t find referenced class org.apache.commons.logging.LogFactory 78 Warning: org.apache.http.impl.client.DefaultRequestDirector: can‘t find referenced class org.apache.commons.logging.LogFactory 79 Warning: org.apache.http.impl.client.HttpAuthenticator: can‘t find referenced class org.apache.commons.logging.LogFactory 80 Warning: org.apache.http.impl.client.HttpAuthenticator: can‘t find referenced class org.apache.commons.logging.LogFactory 81 Warning: org.apache.http.impl.conn.BasicClientConnectionManager: can‘t find referenced class org.apache.commons.logging.LogFactory 82 Warning: org.apache.http.impl.conn.BasicClientConnectionManager: can‘t find referenced class org.apache.commons.logging.LogFactory 83 Warning: org.apache.http.impl.conn.DefaultClientConnection: can‘t find referenced class org.apache.commons.logging.LogFactory 84 Warning: org.apache.http.impl.conn.DefaultClientConnection: can‘t find referenced class org.apache.commons.logging.LogFactory 85 Warning: org.apache.http.impl.conn.DefaultClientConnection: can‘t find referenced class org.apache.commons.logging.LogFactory 86 Warning: org.apache.http.impl.conn.DefaultClientConnectionOperator: can‘t find referenced class org.apache.commons.logging.LogFactory 87 Warning: org.apache.http.impl.conn.DefaultClientConnectionOperator: can‘t find referenced class org.apache.commons.logging.LogFactory 88 Warning: org.apache.http.impl.conn.DefaultHttpResponseParser: can‘t find referenced class org.apache.commons.logging.LogFactory 89 Warning: org.apache.http.impl.conn.DefaultHttpResponseParser: can‘t find referenced class org.apache.commons.logging.LogFactory 90 Warning: org.apache.http.impl.conn.DefaultResponseParser: can‘t find referenced class org.apache.commons.logging.LogFactory 91 Warning: org.apache.http.impl.conn.DefaultResponseParser: can‘t find referenced class org.apache.commons.logging.LogFactory 92 Warning: org.apache.http.impl.conn.IdleConnectionHandler: can‘t find referenced class org.apache.commons.logging.LogFactory 93 Warning: org.apache.http.impl.conn.IdleConnectionHandler: can‘t find referenced class org.apache.commons.logging.LogFactory 94 Warning: org.apache.http.impl.conn.InMemoryDnsResolver: can‘t find referenced class org.apache.commons.logging.LogFactory 95 Warning: org.apache.http.impl.conn.InMemoryDnsResolver: can‘t find referenced class org.apache.commons.logging.LogFactory 96 Warning: org.apache.http.impl.conn.PoolingClientConnectionManager: can‘t find referenced class org.apache.commons.logging.LogFactory 97 Warning: org.apache.http.impl.conn.PoolingClientConnectionManager: can‘t find referenced class org.apache.commons.logging.LogFactory 98 Warning: org.apache.http.impl.conn.SingleClientConnManager: can‘t find referenced class org.apache.commons.logging.LogFactory 99 Warning: org.apache.http.impl.conn.SingleClientConnManager: can‘t find referenced class org.apache.commons.logging.LogFactory100 Warning: org.apache.http.impl.conn.tsccm.AbstractConnPool: can‘t find referenced class org.apache.commons.logging.LogFactory101 Warning: org.apache.http.impl.conn.tsccm.AbstractConnPool: can‘t find referenced class org.apache.commons.logging.LogFactory102 Warning: org.apache.http.impl.conn.tsccm.ConnPoolByRoute: can‘t find referenced class org.apache.commons.logging.LogFactory103 Warning: org.apache.http.impl.conn.tsccm.ConnPoolByRoute: can‘t find referenced class org.apache.commons.logging.LogFactory104 Warning: org.apache.http.impl.conn.tsccm.RouteSpecificPool: can‘t find referenced class org.apache.commons.logging.LogFactory105 Warning: org.apache.http.impl.conn.tsccm.RouteSpecificPool: can‘t find referenced class org.apache.commons.logging.LogFactory106 Warning: org.apache.http.impl.conn.tsccm.ThreadSafeClientConnManager: can‘t find referenced class org.apache.commons.logging.LogFactory107 Warning: org.apache.http.impl.conn.tsccm.ThreadSafeClientConnManager: can‘t find referenced class org.apache.commons.logging.LogFactory108 You should check if you need to specify additional program jars.109 Warning: there were 104 unresolved references to classes or interfaces.110 You may need to specify additional library jars (using ‘-libraryjars‘).111 Warning: there were 1 instances of library classes depending on program classes.112 You must avoid such dependencies, since the program classes will113 be processed, while the library classes will remain unchanged.114 java.io.IOException: Please correct the above warnings first.115 at proguard.Initializer.execute(Initializer.java:321)116 at proguard.ProGuard.initialize(ProGuard.java:211)117 at proguard.ProGuard.execute(ProGuard.java:86)118 at proguard.ProGuard.main(ProGuard.java:492)
解决方法很简单，就是在proguard.cfg中加入句-dontwarn即可。
第二个运行时报错，我用真机调试查看了下LogCat日志输出，发现报的错误是找不到资源，而报错地方是引入第三方jar的时候，原来是混淆时将第三方jar包也混淆了,那么只要不混淆第三方jar就可以吧。
以下是我最后的proguard.cfg配置。
1 -keep class **.R$* { *; }//不混淆R文件 2 -optimizationpasses 5 3 -dontusemixedcaseclassnames 4 -dontskipnonpubliclibraryclasses 5 -dontpreverify 6 -ignorewarnings 7 -verbose 8 -optimizations !code/simplification/arithmetic,!field/*,!class/merging/* 9 10 //不混淆的jar包，脚本中去掉该句11 -libraryjars libs/jar包名称12 13 -dontwarn//不警告,脚本中去掉该句14 -dontskipnonpubliclibraryclassmembers15 16 -keep public class * extends android.app.Activity17 -keep public class * extends android.app.Application18 -keep public class * extends android.app.Service19 -keep public class * extends android.content.BroadcastReceiver20 -keep public class * extends android.content.ContentProvider21 -keep public class * extends android.app.backup.BackupAgentHelper22 -keep public class * extends android.preference.Preference23 -keep public class com.android.vending.licensing.ILicensingService24 25 -keepclasseswithmembernames class * {26 native <methods>;27 }28 29 -keepclasseswithmembers class * {30 public <init>(android.content.Context, android.util.AttributeSet);31 }32 33 -keepclasseswithmembers class * {34 public <init>(android.content.Context, android.util.AttributeSet, int);35 }36 37 -keepclassmembers class * extends android.app.Activity {38 public void *(android.view.View);39 }40 41 -keepclassmembers enum * {42 public static **[] values();43 public static ** valueOf(java.lang.String);44 }45 46 -keep class * implements android.os.Parcelable {47 public static final android.os.Parcelable$Creator *;48 }49 50 //不混淆某包中的指定内容,脚本中去掉该句51 -keep class 包名.** {*;}
至此，就ok了
Android之如何混淆代码和相关配置
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