Android项目中使用javacv和javacpp的代码混淆配置

最近一个项目中涉及到了视频录制，使用到了javacv和javacpp，于是在打包混淆的时候出了问题，总是报错，错误信息如下：

02-27 13:43:53.400: E/AndroidRuntime(25640): Caused by: java.lang.UnsatisfiedLinkError: Couldn't load jniPointer: findLibrary returned null02-27 13:43:53.400: E/AndroidRuntime(25640): at java.lang.Runtime.loadLibrary(Runtime.java:365)02-27 13:43:53.400: E/AndroidRuntime(25640): at java.lang.System.loadLibrary(System.java:535)02-27 13:43:53.400: E/AndroidRuntime(25640): at com.googlecode.javacpp.Loader.loadLibrary(Unknown Source)02-27 13:43:53.400: E/AndroidRuntime(25640): at com.googlecode.javacpp.Loader.load(Unknown Source)02-27 13:43:53.400: E/AndroidRuntime(25640): at com.googlecode.javacpp.Loader.load(Unknown Source)02-27 13:43:53.400: E/AndroidRuntime(25640): at com.googlecode.javacv.cpp.avcodec$AVPacket.(Unknown Source)02-27 13:43:53.400: E/AndroidRuntime(25640): ... 12 more02-27 13:43:53.400: E/AndroidRuntime(25640): Caused by: java.lang.UnsatisfiedLinkError: Couldn't load gnustl_static: findLibrary returned null02-27 13:43:53.400: E/AndroidRuntime(25640): ... 18 more

搞了一下午，头都大了，最后终于解决了：

相关配置如下：

-libraryjars libs/javacpp.jar
-libraryjars libs/javacv.jar

-dontwarn com.googlecode.**
-keep class com.googlecode.**{*;}
-keepattributes *Annotation*
-keepattributes Exceptions,InnerClasses,Signature
-keepattributes SourceFile,LineNumberTable

刚开始没有添加：

-keepattributes Exceptions,InnerClasses,Signature
-keepattributes SourceFile,LineNumberTable

添加之后就不报错了，至于这两行的具体作用，暂时我还没有查资料。

所有的混淆配置如下：

# To enable ProGuard in your project, edit project.properties# to define the proguard.config property as described in that file.## Add project specific ProGuard rules here.# By default, the flags in this file are appended to flags specified# in ${sdk.dir}/tools/proguard/proguard-android.txt# You can edit the include path and order by changing the ProGuard# include property in project.properties.## For more details, see#   http://developer.android.com/guide/developing/tools/proguard.html# Add any project specific keep options here:# If your project uses WebView with JS, uncomment the following# and specify the fully qualified class name to the JavaScript interface# class:#-keepclassmembers class fqcn.of.javascript.interface.for.webview {#   public *;#}-optimizationpasses 5-dontusemixedcaseclassnames-dontskipnonpubliclibraryclasses-dontpreverify-verbose-optimizations !code/simplification/arithmetic,!field/*,!class/merging/*-libraryjars libs/android-async-http-1.4.4.jar-libraryjars libs/android-support-v7-recyclerview.jar-libraryjars libs/mta-sdk-1.6.2.jar-libraryjars libs/open_sdk_r4547.jar-libraryjars libs/universal-image-loader-1.9.3.jar-libraryjars libs/javacpp.jar-libraryjars libs/javacv.jar-keep public class * extends android.app.Activity-keep public class * extends android.app.Application-keep public class * extends android.app.Service-keep public class * extends android.content.BroadcastReceiver-keep public class * extends android.content.ContentProvider-keep public class com.android.vending.licensing.ILicensingService-keepclasseswithmembernames class * {    native ;}-keepclasseswithmembernames class * {    public (android.content.Context, android.util.AttributeSet);}-keepclasseswithmembernames class * {    public (android.content.Context, android.util.AttributeSet, int);}-keepclassmembers enum * {    public static **[] values();    public static ** valueOf(java.lang.String);}-keep class * implements android.os.Parcelable {  public static final android.os.Parcelable$Creator *;}-keep class com.sina.**{*;}-dontwarn com.googlecode.**-keep class com.googlecode.**{*;}-keepattributes *Annotation*-keepattributes Exceptions,InnerClasses,Signature  -keepattributes SourceFile,LineNumberTable-dontwarn android-async-http-1.4.4.jar.**-keep class android-async-http-1.4.4.jar.**{*;}

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