Android 灰熟和前进

因此，我们已经到了Android游戏开发的最后阶段，是时候对Proguard进行一些模糊处理了

我们的游戏使用Greystripe广告，在编译针对API7的调试版本时，一切正常

但在编译发布版本（过程中添加了Proguard）时，会出现大量警告：

Warning: com.greystripe.sdk.DeviceInfo: can't find referenced class android.webkit.JavascriptInterface
Warning: com.greystripe.sdk.DeviceInfo: can't find referenced class android.webkit.JavascriptInterface
Warning: com.greystripe.sdk.DeviceInfo: can't find referenced class android.webkit.JavascriptInterface
Warning: com.greystripe.sdk.DeviceInfo: can't find referenced class android.webkit.JavascriptInterface
Warning: com.greystripe.sdk.DeviceInfo: can't find referenced class android.webkit.JavascriptInterface
Warning: com.greystripe.sdk.DeviceInfo: can't find referenced class android.webkit.JavascriptInterface
Warning: com.greystripe.sdk.DeviceInfo: can't find referenced class android.webkit.JavascriptInterface
Warning: com.greystripe.sdk.DeviceInfo: can't find referenced class android.webkit.JavascriptInterface
Warning: com.greystripe.sdk.DeviceInfo: can't find referenced class android.webkit.JavascriptInterface
Warning: com.greystripe.sdk.DeviceInfo: can't find referenced class android.webkit.JavascriptInterface
Warning: com.greystripe.sdk.DeviceInfo: can't find referenced class android.webkit.JavascriptInterface
Warning: com.greystripe.sdk.DeviceInfo: can't find referenced class android.webkit.JavascriptInterface
Warning: com.greystripe.sdk.DeviceInfo: can't find referenced class android.webkit.JavascriptInterface
Warning: com.greystripe.sdk.GSFullscreenActivity: can't find referenced class android.hardware.Camera$CameraInfo
Warning: com.greystripe.sdk.GSFullscreenActivity: can't find referenced class android.hardware.Camera$CameraInfo
Warning: com.greystripe.sdk.GSFullscreenActivity: can't find referenced method 'void getCameraInfo(int,android.hardware.Camera$CameraInfo)' in class android.hardware.Camera
Warning: com.greystripe.sdk.GSFullscreenActivity: can't find referenced method 'int getNumberOfCameras()' in class android.hardware.Camera
Warning: com.greystripe.sdk.GSFullscreenActivity: can't find referenced method 'android.hardware.Camera open(int)' in class android.hardware.Camera
Warning: com.greystripe.sdk.GSFullscreenActivity: can't find referenced method 'void setDisplayOrientation(int)' in class android.hardware.Camera
Warning: com.greystripe.sdk.GSFullscreenActivity: can't find referenced class android.hardware.Camera$CameraInfo
Warning: com.greystripe.sdk.GSFullscreenActivity: can't find referenced method 'void setLayerType(int,android.graphics.Paint)' in class com.greystripe.sdk.aa
Warning: com.greystripe.sdk.a: can't find referenced class android.webkit.JavascriptInterface
Warning: com.greystripe.sdk.a: can't find referenced class android.webkit.JavascriptInterface
Warning: com.greystripe.sdk.ah: can't find referenced class android.webkit.JavascriptInterface
Warning: com.greystripe.sdk.aj: can't find referenced class android.webkit.JavascriptInterface
Warning: com.greystripe.sdk.aj: can't find referenced class android.webkit.JavascriptInterface
Warning: com.greystripe.sdk.aj: can't find referenced class android.webkit.JavascriptInterface
Warning: com.greystripe.sdk.as: can't find referenced class android.webkit.JavascriptInterface
Warning: com.greystripe.sdk.as: can't find referenced class android.webkit.JavascriptInterface
Warning: com.greystripe.sdk.as: can't find referenced class android.webkit.JavascriptInterface
Warning: com.greystripe.sdk.as: can't find referenced class android.webkit.JavascriptInterface
Warning: com.greystripe.sdk.as: can't find referenced class android.webkit.JavascriptInterface
Warning: com.greystripe.sdk.at: can't find referenced class android.webkit.JavascriptInterface
Warning: com.greystripe.sdk.at: can't find referenced class android.webkit.JavascriptInterface
Warning: com.greystripe.sdk.bd: can't find referenced class android.webkit.JavascriptInterface
Warning: com.greystripe.sdk.be: can't find referenced class android.webkit.JavascriptInterface
Warning: com.greystripe.sdk.be: can't find referenced class android.webkit.JavascriptInterface
Warning: com.greystripe.sdk.be: can't find referenced class android.webkit.JavascriptInterface
Warning: com.greystripe.sdk.be: can't find referenced class android.webkit.JavascriptInterface
Warning: com.greystripe.sdk.be: can't find referenced class android.webkit.JavascriptInterface
Warning: com.greystripe.sdk.be: can't find referenced class android.webkit.JavascriptInterface
Warning: com.greystripe.sdk.bh: can't find referenced class android.webkit.JavascriptInterface
Warning: com.greystripe.sdk.bh: can't find referenced class android.webkit.JavascriptInterface
Warning: com.greystripe.sdk.bl: can't find referenced class android.webkit.JavascriptInterface
Warning: com.greystripe.sdk.bl: can't find referenced class android.webkit.JavascriptInterface
Warning: com.greystripe.sdk.bl: can't find referenced class android.webkit.JavascriptInterface
Warning: com.greystripe.sdk.bl: can't find referenced class android.webkit.JavascriptInterface
Warning: com.greystripe.sdk.bl: can't find referenced class android.webkit.JavascriptInterface
Warning: com.greystripe.sdk.m: can't find referenced class android.webkit.JavascriptInterface
Warning: com.greystripe.sdk.m: can't find referenced class android.webkit.JavascriptInterface
Warning: com.greystripe.sdk.m: can't find referenced class android.webkit.JavascriptInterface
Warning: com.greystripe.sdk.m: can't find referenced class android.webkit.JavascriptInterface
Warning: com.greystripe.sdk.m: can't find referenced class android.webkit.JavascriptInterface
Warning: com.greystripe.sdk.m: can't find referenced class android.webkit.JavascriptInterface
Warning: com.greystripe.sdk.m: can't find referenced class android.webkit.JavascriptInterface
Warning: com.greystripe.sdk.m: can't find referenced class android.webkit.JavascriptInterface
Warning: com.greystripe.sdk.m: can't find referenced class android.webkit.JavascriptInterface
Warning: com.greystripe.sdk.s: can't find referenced class android.webkit.JavascriptInterface
Warning: com.greystripe.sdk.s: can't find referenced class android.webkit.JavascriptInterface
Warning: com.greystripe.sdk.w: can't find referenced class android.webkit.JavascriptInterface
Warning: com.greystripe.sdk.w: can't find referenced class android.webkit.JavascriptInterface
Warning: com.greystripe.sdk.w: can't find referenced class android.webkit.JavascriptInterface
Warning: com.greystripe.sdk.w: can't find referenced class android.webkit.JavascriptInterface
Warning: com.greystripe.sdk.w: can't find referenced class android.webkit.JavascriptInterface
Warning: com.greystripe.sdk.w: can't find referenced class android.webkit.JavascriptInterface
Warning: com.greystripe.sdk.w: can't find referenced class android.webkit.JavascriptInterface
Warning: com.greystripe.sdk.w: can't find referenced class android.webkit.JavascriptInterface
Warning: com.greystripe.sdk.w: can't find referenced class android.webkit.JavascriptInterface
Warning: com.greystripe.sdk.w: can't find referenced class android.webkit.JavascriptInterface
Warning: there were 64 unresolved references to classes or interfaces.
     You may need to specify additional library jars (using '-libraryjars').
Warning: there were 5 unresolved references to program class members.
     Your input classes appear to be inconsistent.
     You may need to recompile them and try again.
     Alternatively, you may have to specify the option 
     '-dontskipnonpubliclibraryclassmembers'.

很明显，我开始尝试很多不同的

-keep class

和

-keep public class

等变体，但没有任何效果。然后我开始在谷歌上搜索，发现很多论坛帖子都有相同的问题，我尝试了人们回复的所有建议。还是没有变化

然后我查看了android.jar，发现

android.webkit.JavascriptInterface

在API 17之前没有引入，这当然是有道理的。因为我的目标是API7，所以自然没有可用的

android.webkit.JavascriptInterface

但我不想仅仅因为广告就把API17作为目标，我很确定我也不应该这样做

从逻辑上讲，我认为我应该能够只使用

-dontwarn

，但这样做会导致应用程序在加载时崩溃

我当然要确保我把

-libraryjars/path/to/libs/greystripe-android-sdk-2.3.0.jar

和

/path/to/android.jar

---

有人对此有任何线索吗？我如何在不使用greystripe sdk jar的情况下混淆我的应用程序？

ProGuard在阅读输入后立即打印这些警告，因此

-keep

选项没有帮助。您应该根据API 17进行构建，这样ProGuard就可以找到分析和处理应用程序所需的所有类。您仍然可以在AndroidManifest.xml中指定不同的目标

---

如果您使用的是标准的Ant/Eclipse/Gradle构建，那么就不应该指定

-libraryjars

，因为这些构建已经为您完成了这项工作。

虽然我现在没有时间测试它（我还有很多其他的事情要做），但我想在我记忆犹新的时候在这里编写它。然后我们再看看这是否是解决方案

需要记住的重要事项：targetSdkVersion与构建版本不同

在本例中，对于Greystripe类，它们显然是在测试某些Android类是否存在，这些Android类仅在API 17之后可用，您应该将构建目标设置为API 17。这意味着您将使用API 17中可用的类进行编译。因此，Proguard不应发出警告

但是，在AndroidManifest.xml文件中，不必将targetSdkVersion=“17”放在其中。您可以将其设置为您希望的任何目标。（尽管由于ICS和菜单按钮问题，建议始终针对API 14或更高版本）

所以，现在的最佳设置（理论上，需要稍后测试）是

build target=API17-避免Proguard警告，因为Greystripe API引用API17中的类 sdkTargetVersion>=14-因为兼容性问题。将其设置为可以测试的API版本 minTargetVersion=7（如果您的应用程序将在API7上运行）-因为根据文档，Greystripe API应该在API7上运行

那么一切都会好起来的

更多（半）相关阅读：

---

将以下内容添加到您的ProGuard文件中：

-keep class com.greystripe.*{*；}

这将删除警告并允许Greystripe SDK按预期运行

如果由于某种原因，该行无法修复它，请尝试以下操作：

-keep class com.greystripe.*{*；}

---

-keepclassmembers class com.greystripe.*{public*；}

我应该补充一点，当使用

-dontwarn

时发生的崩溃确实是greystripe类中的一个空指针异常。哇，这个人自己的回答。谢谢另一个人也推荐我把API 17作为目标，不过还有其他原因。所以这可能就是我最后要做的。不过现在，我实际上设法让它使用

-dontwarn

参数。它编译和运行时没有错误。不过，运行时日志确实显示了一个警告，当/如果以API17为目标时，这一警告是否会消失，这将是一件有趣的事情。