【android】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.LogFactory
100  Warning: org.apache.http.impl.conn.tsccm.AbstractConnPool: can't find referenced class org.apache.commons.logging.LogFactory
101  Warning: org.apache.http.impl.conn.tsccm.AbstractConnPool: can't find referenced class org.apache.commons.logging.LogFactory
102  Warning: org.apache.http.impl.conn.tsccm.ConnPoolByRoute: can't find referenced class org.apache.commons.logging.LogFactory
103  Warning: org.apache.http.impl.conn.tsccm.ConnPoolByRoute: can't find referenced class org.apache.commons.logging.LogFactory
104  Warning: org.apache.http.impl.conn.tsccm.RouteSpecificPool: can't find referenced class org.apache.commons.logging.LogFactory
105  Warning: org.apache.http.impl.conn.tsccm.RouteSpecificPool: can't find referenced class org.apache.commons.logging.LogFactory
106  Warning: org.apache.http.impl.conn.tsccm.ThreadSafeClientConnManager: can't find referenced class org.apache.commons.logging.LogFactory
107  Warning: org.apache.http.impl.conn.tsccm.ThreadSafeClientConnManager: can't find referenced class org.apache.commons.logging.LogFactory
108        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 will
113           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$* {   *;  }//不混淆R文件
2 -optimizationpasses 5
3 -dontusemixedcaseclassnames
4 -dontskipnonpubliclibraryclasses
5 -dontpreverify
6 -ignorewarnings
7 -verbose
8 -optimizations !code/simplification/arithmetic,!field/*,!class/merging/*
9
10 //不混淆的jar包，脚本中去掉该句
11 -libraryjars libs/jar包名称
12
13 -dontwarn//不警告,脚本中去掉该句
14 -dontskipnonpubliclibraryclassmembers
15
16 -keep public class * extends android.app.Activity
17 -keep public class * extends android.app.Application
18 -keep public class * extends android.app.Service
19 -keep public class * extends android.content.BroadcastReceiver
20 -keep public class * extends android.content.ContentProvider
21 -keep public class * extends android.app.backup.BackupAgentHelper
22 -keep public class * extends android.preference.Preference
23 -keep public class com.android.vending.licensing.ILicensingService
24
25 -keepclasseswithmembernames class * {
26     native <methods>;
27 }
28
29 -keepclasseswithmembers class * {
30     public <init>(android.content.Context, android.util.AttributeSet);
31 }
32
33 -keepclasseswithmembers class * {
34     public <init>(android.content.Context, android.util.AttributeSet, int);
35 }
36
37 -keepclassmembers class * extends android.app.Activity {
38    public void *(android.view.View);
39 }
40
41 -keepclassmembers enum * {
42     public static **[] values();
43     public static ** valueOf(java.lang.String);
44 }
45
46 -keep class * implements android.os.Parcelable {
47   public static final android.os.Parcelable$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

转自：http://www.cnphp6.com/archives/65779