Android4.1.2 Email发送邮件附件中文名乱码问题

最新推荐文章于 2019-09-25 20:34:53 发布

转载最新推荐文章于 2019-09-25 20:34:53 发布 · 4.8k 阅读

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#Android #Android开发 #Email #附件乱码

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本文介绍如何解决Android自带邮件客户端发送中文名附件时出现乱码的问题。通过修改Rfc822Output.java文件中的writeOneAttachment函数，利用MimeUtility.foldAndEncode2方法对附件名进行编码。

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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。