Proguard 和安卓 :(答案

【问题标题】：Proguard and Android :(Proguard 和安卓 :(
【发布时间】：2012-01-22 09:03:43
【问题描述】：

我正在尝试在我的 Android 应用上运行 Proguard，但遇到了问题。

我正在使用 SpongyCastle jar（完整充气城堡的副本和过去的包已重命名，因此它不会与内置版本的 androids 充气城堡冲突）

运行 proguard 时，我看到以下内容

我该如何解决这个问题？将 rt.jar 添加到我的库中？

proguard 的全部意义在于压缩代码，但我不断添加 jar 来解决 proguard 抱怨找不到类的问题！我错过了什么吗？

[proguard] Warning: org.spongycastle.x509.util.LDAPStoreHelper: can't find referenced class javax.naming.directory.InitialDirContext
[proguard] Warning: org.spongycastle.x509.util.LDAPStoreHelper: can't find referenced class javax.naming.directory.InitialDirContext
[proguard] Warning: org.spongycastle.x509.util.LDAPStoreHelper: can't find referenced class javax.naming.directory.SearchControls
[proguard] Warning: org.spongycastle.x509.util.LDAPStoreHelper: can't find referenced class javax.naming.directory.SearchControls
[proguard] Warning: org.spongycastle.x509.util.LDAPStoreHelper: can't find referenced class javax.naming.directory.SearchControls
[proguard] Warning: org.spongycastle.x509.util.LDAPStoreHelper: can't find referenced class javax.naming.directory.SearchControls
[proguard] Warning: org.spongycastle.x509.util.LDAPStoreHelper: can't find referenced class javax.naming.directory.SearchControls
[proguard] Warning: org.spongycastle.x509.util.LDAPStoreHelper: can't find referenced class javax.naming.directory.DirContext
[proguard] Warning: org.spongycastle.x509.util.LDAPStoreHelper: can't find referenced class javax.naming.NamingEnumeration
[proguard] Warning: org.spongycastle.x509.util.LDAPStoreHelper: can't find referenced class javax.naming.NamingEnumeration
[proguard] Warning: org.spongycastle.x509.util.LDAPStoreHelper: can't find referenced class javax.naming.directory.SearchResult
[proguard] Warning: org.spongycastle.x509.util.LDAPStoreHelper: can't find referenced class javax.naming.directory.SearchResult
[proguard] Warning: org.spongycastle.x509.util.LDAPStoreHelper: can't find referenced class javax.naming.directory.Attributes
[proguard] Warning: org.spongycastle.x509.util.LDAPStoreHelper: can't find referenced class javax.naming.directory.Attribute
[proguard] Warning: org.spongycastle.x509.util.LDAPStoreHelper: can't find referenced class javax.naming.directory.Attribute
[proguard] Warning: org.spongycastle.x509.util.LDAPStoreHelper: can't find referenced class javax.naming.NamingEnumeration
[proguard] Warning: org.spongycastle.x509.util.LDAPStoreHelper: can't find referenced class javax.naming.directory.DirContext
[proguard] Warning: org.spongycastle.x509.util.LDAPStoreHelper: can't find referenced class javax.naming.NamingException
[proguard] Warning: org.spongycastle.x509.util.LDAPStoreHelper: can't find referenced class javax.naming.directory.DirContext
[proguard] Warning: org.spongycastle.x509.util.LDAPStoreHelper: can't find referenced class javax.naming.NamingEnumeration
[proguard] Warning: org.spongycastle.x509.util.LDAPStoreHelper: can't find referenced class javax.naming.directory.Attributes
[proguard] Warning: org.spongycastle.x509.util.LDAPStoreHelper: can't find referenced class javax.naming.directory.DirContext
[proguard] Warning: org.spongycastle.x509.util.LDAPStoreHelper: can't find referenced class javax.naming.directory.DirContext
[proguard] Warning: org.spongycastle.x509.util.LDAPStoreHelper: can't find referenced class javax.naming.directory.SearchResult
[proguard] Warning: org.spongycastle.x509.util.LDAPStoreHelper: can't find referenced class javax.naming.NamingEnumeration
[proguard] Warning: org.spongycastle.x509.util.LDAPStoreHelper: can't find referenced class javax.naming.directory.SearchControls
[proguard] Warning: org.spongycastle.x509.util.LDAPStoreHelper: can't find referenced class javax.naming.NamingEnumeration
[proguard] Warning: org.spongycastle.x509.util.LDAPStoreHelper: can't find referenced class javax.naming.NamingException
[proguard] Warning: org.spongycastle.x509.util.LDAPStoreHelper: can't find referenced class javax.naming.directory.DirContext
[proguard] Note: the configuration refers to the unknown class 'android.app.backup.BackupAgentHelper'
[proguard] Note: the configuration refers to the unknown class 'com.android.vending.licensing.ILicensingService'
[proguard] Note: there were 2 references to unknown classes.
[proguard]       You should check your configuration for typos.
[proguard] Warning: there were 57 unresolved references to classes or interfaces.
[proguard]          You may need to specify additional library jars (using '-libraryjars'),
[proguard]          or perhaps the '-dontskipnonpubliclibraryclasses' option.

UILD FAILED
:\AndroidSDK\android-sdk_r12-windows\android-sdk-windows\tools\ant\build.xml:713: Please correct the above warnings first.

更新

ANT Script

我使用android update project --path . 生成build.xml，因为该项目是前一段时间创建的，我没有进行任何更改

<?xml version="1.0" encoding="UTF-8"?>
    <project name="RootActivity" default="help">
        <loadproperties srcFile="local.properties" />
        <property file="ant.properties" />
        <loadproperties srcFile="project.properties" />
        <fail message="sdk.dir is missing. Make sure to generate local.properties using 'android update project'" unless="sdk.dir" />
        <import file="${sdk.dir}/tools/ant/build.xml" />
    </project>

【问题讨论】：

你能把你的ant脚本部分负责吗？这似乎是在 android 中导入标准 java 库的问题......
我使用了 android update project --path 。生成 build.xml，因为项目是前一段时间创建的，我没有做任何更改
有一个相关的issue #27612。

标签： android proguard obfuscation

【解决方案1】：

将以下内容 -dontwarn javax.naming.** 添加到您的 Proguard 配置中。

它们只是警告，忽略它们应该不是问题。

【讨论】：

这是官方推荐的解决方案。 Android 上缺少命名包，但显然这不会导致任何问题。
对于其他有相同问题但使用基于 gradle 的构建 (android studio) 的人 - 查看此答案：stackoverflow.com/q/18481752/1041533 并确保正确包含两个 proguard 文件！默认的和你的，里面有上面的语句

【解决方案2】：

我认为没有必要将 rt.jar 添加到您的库中。您需要确保在 proguard 脚本中正确引用它。以here 为例。第 2 节中的这一行是赚钱的人：

-libraryjars ${java.home}/lib/rt.jar

不过，如果您使用 xml 表示法作为 proguard，则该语法会发生变化。如果您发布负责的 ant 脚本部分，我可以尝试提供更多帮助。希望这会有所帮助！

【讨论】：