打开电子邮件与多个附件，同时限制选择器只电子邮件应用？ [英] Opening an email with multiple attachments, while restricting the chooser to ONLY email apps?

问题描述

什么是Android上带有多个附件的发送电子邮件，而不在选配有非电子邮件应用程序的最佳方法的？

What is the best way on Android to send an email with multiple attachments without having non-email apps in the chooser?

在发送电子邮件，我用来做这样的：

When sending emails, I used to do it like this:

final Intent sendEmailIntent = new Intent(Intent.ACTION_SEND);
sendEmailIntent.setType("message/rfc822");
sendEmailIntent.putExtra(Intent.EXTRA_EMAIL, new String[] { "[e-mail]" });
...

不幸的是，信息/ RFC822不再行之有效的从选择器，如Evernote的，驱动器，以及其他各种应用程序过滤掉不需要的应用程序。

Unfortunately, "message/rfc822" no longer works well for filtering out undesired apps from the chooser, such as Evernote, Drive, and various other apps.

最近，我发现这个变通方法，单个附件的作品：

I recently found this workaround that works for single attachments:

sendEmailIntent = new Intent(Intent.ACTION_SENDTO);
Uri data = Uri.parse("mailto:?to=[e-mail]&subject...");
sendEmailIntent.setData(data);  
...

不幸的是，这并不对多个附件工作。我试了一下，它崩溃的Gmail。 ：•

Unfortunately, this doesn't work for multiple attachments. I tried it, and it crashes Gmail. :S

推荐答案

我终于找到了一个解决方案，尽管它仅适用于冰淇淋三明治MR1以上。关键是要首先建立你的意图使用ACTION_SEND_MULTIPLE：

I finally found a solution, albeit one that only works on Ice Cream Sandwich MR1 and above. The trick is to first build your intent using ACTION_SEND_MULTIPLE:

sendEmailIntent = new Intent(Intent.ACTION_SEND_MULTIPLE);
sendEmailIntent.setType("message/rfc822");
sendEmailIntent.putExtra(Intent.EXTRA_EMAIL, new String[] { "[e-mail]" });                
sendEmailIntent.putExtra(Intent.EXTRA_SUBJECT, "Subject");
sendEmailIntent.putExtra(Intent.EXTRA_TEXT, "Body");
final ArrayList<Uri> uris = /* ... Your code to build the attachments. */
sendEmailIntent.putParcelableArrayListExtra(Intent.EXTRA_STREAM, uris);

要限制它只有电子邮件应用，添加此code：

To restrict it to email apps only, add this code:

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH_MR1) {
    sendEmailIntent.setType(null); // If we're using a selector, then clear the type to null. I don't know why this is needed, but it doesn't work without it.
    final Intent restrictIntent = new Intent(Intent.ACTION_SENDTO);
    Uri data = Uri.parse("mailto:?to=[e-mail]");
    restrictIntent.setData(data);
    sendEmailIntent.setSelector(restrictIntent);
}

当您触发此意图与startActivity（），你现在只能看到电子邮件的应用程序列表中，如果你选择Gmail中，多个附件将在那里。

When you fire this intent with startActivity(), you'll now only see email apps in the list, and if you select Gmail, the multiple attachments will be there.

我这样做有一个try / catch万一startActivity解析到任何活动，在这种情况下，我删除了选择，而且它似乎运作良好。

I do this with a try/catch in case startActivity resolves to no activities, in which case I remove the selector, and it seems to work well.

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