一、问题
在使用eclipse对apk进行签名打包是，console界面出现下面的异常信息，导致打包失败：
[2014-07-15 23:57:43 - MozMeet] Warning: com.squareup.picasso.OkHttpDownloader: can't find referenced class com.squareup.okhttp.OkHttpClient [2014-07-15 23:57:43 - MozMeet] Warning: com.squareup.picasso.OkHttpDownloader: can't find referenced class com.squareup.okhttp.OkHttpClient [2014-07-15 23:57:43 - MozMeet] Warning: com.squareup.picasso.OkHttpDownloader: can't find referenced class com.squareup.okhttp.OkUrlFactory [2014-07-15 23:57:43 - MozMeet] Warning: com.squareup.picasso.OkHttpDownloader: can't find referenced class com.squareup.okhttp.Cache [2014-07-15 23:57:43 - MozMeet] Warning: com.squareup.picasso.OkHttpDownloader: can't find referenced class com.squareup.okhttp.Cache [2014-07-15 23:57:43 - MozMeet] Warning: com.squareup.picasso.OkHttpDownloader: can't find referenced class com.squareup.okhttp.OkHttpClient [2014-07-15 23:57:43 - MozMeet] Warning: com.squareup.picasso.OkHttpDownloader: can't find referenced class com.squareup.okhttp.OkUrlFactory [2014-07-15 23:57:43 - MozMeet] Warning: com.squareup.picasso.OkHttpDownloader: can't find referenced class com.squareup.okhttp.OkUrlFactory [2014-07-15 23:57:43 - MozMeet] Warning: com.squareup.picasso.OkHttpDownloader: can't find referenced class com.squareup.okhttp.OkUrlFactory [2014-07-15 23:57:43 - MozMeet] Warning: com.squareup.picasso.OkHttpDownloader: can't find referenced class com.squareup.okhttp.OkUrlFactory [2014-07-15 23:57:43 - MozMeet] Warning: com.squareup.picasso.OkHttpDownloader: can't find referenced class com.squareup.okhttp.OkHttpClient [2014-07-15 23:57:43 - MozMeet] Warning: com.squareup.picasso.OkHttpDownloader: can't find referenced class com.squareup.okhttp.OkHttpClient [2014-07-15 23:57:43 - MozMeet] Warning: com.squareup.picasso.OkHttpDownloader: can't find referenced class com.squareup.okhttp.OkHttpClient [2014-07-15 23:57:43 - MozMeet] You should check if you need to specify additional program jars. [2014-07-15 23:57:43 - MozMeet] Warning: there were 95 unresolved references to classes or interfaces. [2014-07-15 23:57:43 - MozMeet] You may need to specify additional library jars (using '-libraryjars'). [2014-07-15 23:57:43 - MozMeet] Error: Please correct the above warnings first.二、原因：取消注释proguard.config=${sdk.dir}/tools/proguard/proguard-android.txt:proguard-project.txt这行，使用混淆打包时出现的。
三、解决办法：
在proguard-project.txt混淆配置中，增加下面的代码：
-keepattributes SourceFile,LineNumberTable
-keep class com.parse.*{ *; }
-dontwarn com.parse.**
-dontwarn com.squareup.picasso.**
-keepclasseswithmembernames class * {
native <methods>;
}
原文：http://blog.csdn.net/z18789231876/article/details/41206933