title: Android multiple email attachments using Intent
body: <p>I've been working on Android program to send email with an attachment (image file, audio file, etc) using Intent with <code>ACTION_SEND</code>. The program is working when email has a single attachment. I used <code>Intent.putExtra(android.content.Intent.EXTRA_STREAM, uri)</code> to attach the designated image file to the mail and it is working fine, the mail can be delivered through the Gmail. However, when I tried to have multiple images attached to the same mail by calling <code>Intent.putExtra(android.content.Intent.EXTRA_STREAM, uri)</code> multiple times, it failed to work. None of the attachment show up in the email.  </p>
  
  <p>I searched the SDK documentation and Android programming user group about email attachment but cannot find any related info. However, I've discovered that there's another intent constant <code>ACTION_SEND_MULTIPLE</code> (available since API level 4) which might meet my requirement.  Based on SDK documentation, it simply states that it deliver multiple data to someone else, it works like <code>ACTION_SEND</code>, except the data is multiple. But I still could not figure out the correct usage for this command. I tried to declare intent with <code>ACTION_SEND_MULTIPLE</code>, then  call <code>putExtra(EXTRA_STREAM, uri)</code> multiple times to attach multiple images, but I got the same erroneous result just like before, none of the attachment show up in the email.  </p>
  
  <p>Has anyone tried with <code>ACTION_SEND_MULTIPLE</code> and got it working with multiple email attachment?</p>