Android4.1.2 Email发送邮件附件中文名乱码问题

http://blog.sina.com.cn/s/blog_3e4774e301018cu7.html
在Android下使用自带Email客户端在发送中文名附件时，不管是在PC机上还是在Android设备上，都会显示为乱码，在网上查了些资料，发现跟发送时传送的文件名参数有关系，具体只需要修改packages/apps/Email/emailcommon/src/com/android/emailcommon/internet/Rfc822Output.java文件，将writeOneAttachment函数中的如下内容：

    writeHeader(writer, "Content-Type",                attachment.mMimeType + ";\n name=\"" + attachment.mFileName + "\"");        writeHeader(writer, "Content-Transfer-Encoding", "base64");        // Most attachments (real files) will send Content-Disposition.  The suppression option        // is used when sending calendar invites.        if ((attachment.mFlags & Attachment.FLAG_ICS_ALTERNATIVE_PART) == 0) {            writeHeader(writer, "Content-Disposition",                    "attachment;"                    + "\n filename=\"" + attachment.mFileName + "\";"                    + "\n size=" + Long.toString(attachment.mSize));        }

修改为：

     writeHeader(writer, "Content-Type",                 attachment.mMimeType + ";\n name=\"" +                 MimeUtility.foldAndEncode2(attachment.mFileName,"Content-Type".length() + 2)                 + "\"");         writeHeader(writer, "Content-Transfer-Encoding", "base64");         // Most attachments (real files) will send Content-Disposition.  The suppression option         // is used when sending calendar invites.         if ((attachment.mFlags & Attachment.FLAG_ICS_ALTERNATIVE_PART) == 0) {             writeHeader(writer, "Content-Disposition",                     "attachment;"                     + "\n filename=\"" +                     MimeUtility.foldAndEncode2(attachment.mFileName,"Content-Disposition".length()                             + 2)                     + "\";"                     + "\n size=" + Long.toString(attachment.mSize));         }

至此即可解决该问题。

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