首先，我已经提到过类似的帖子，Android,javamailandproguard提到的解决方案是在proguard-project.txt中明确保留以下内容:-dontwarnjava.awt.**-dontwarnjava.beans.Beans-dontwarnjavax.security.**-keepclassjavamail.**{*;}-keepclassjavax.mail.**{*;}-keepclassjavax.activation.**{*;}-keepclasscom.sun.mail.dsn.**{*;}-keepclasscom.sun.mail.han