如何仅使用电子邮件应用程序发送附件电子邮件？

Question

有两个要求:

• 电子邮件附件
• 在Intent选择器中,应该只有电子邮件应用程序.

我所知道/做过的事:

• Intent.ACTION_SENDTO与intent.setData(Uri.parse("mailto:"))可以确保有只在电子邮件应用程序Intent选择器,但它不会带来附件(如Gmail它将一些应用程序,但也有将忽略附着许多应用程序).

• Intent.ACTION_SEND可以发送附件的电子邮件.但是,在Intent选择器中,会有应用程序实际上不是电子邮件应用程序但可以响应Intent.ACTION_SEND.使用intent.setType("message/rfc822")可以减少这些应用程序的数量,但不是全部.

• 参考这个答案:https://stackoverflow.com/a/8550043/3952691并且几乎成功实现了我的目标.我的代码如下:

  private static void sendFeedbackWithAttachment(Context context, String subject) {
      Intent intent = new Intent(Intent.ACTION_SENDTO);
      intent.setData(Uri.parse("mailto:"));
  
      PackageManager packageManager = context.getPackageManager();
      List<ResolveInfo> resolveInfos = packageManager.queryIntentActivities(intent, 0);
      if (resolveInfos.isEmpty()) {
          Toast.makeText(context, context.getString(R.string.error_activity_not_found),
                  Toast.LENGTH_SHORT).show();
      } else {
          // ACTION_SEND may be replied by some apps that are not email apps. However,
          // ACTION_SENDTO doesn't allow us to choose attachment. As a result, we use
          // an ACTION_SENDTO intent with email data to filter email apps and then send
          // email with attachment by ACTION_SEND.
          List<LabeledIntent> intents = new ArrayList<>();
          Uri uri = getLatestLogUri();
          for (ResolveInfo info : resolveInfos) {
              Intent i = new Intent(Intent.ACTION_SEND);
              i.setPackage(info.activityInfo.packageName);
              i.setClassName(info.activityInfo.packageName, info.activityInfo.name);
              i.putExtra(Intent.EXTRA_EMAIL, new String[] { Def.Meta.FEEDBACK_EMAIL });
              i.putExtra(Intent.EXTRA_SUBJECT, subject);
              i.putExtra(Intent.EXTRA_STREAM, uri);
              intents.add(new LabeledIntent(i, info.activityInfo.packageName,
                      info.loadLabel(context.getPackageManager()), info.icon));
          }
          Intent chooser = Intent.createChooser(intents.remove(0),
                  context.getString(R.string.send_feedback_to_developer));
          chooser.putExtra(Intent.EXTRA_INITIAL_INTENTS,
                  intents.toArray(new LabeledIntent[intents.size()]));
          context.startActivity(chooser);
      }
  }
  

  但是,在某些设备上(例如,使用MIUI V5的小米2S,我不知道这是否会受到第三方ROM的影响),结果是空Intent选择器.似乎在Android 6.0之上,Intent.EXTRA_INITIAL_INTENTS有一些错误(自定义意图选择器 - 为什么在Android 6上它显示空单元格？,另外一个:https://code.google.com/p/android/issues/detail？ id = 202693).

结果,我不知道如何实现我的目标.请帮帮我,谢谢你.

Answer 1

有两种方法可以做到这一点

选项1

 Intent emailIntent = new Intent(
            android.content.Intent.ACTION_VIEW);

     
     //Option 1
    Uri data = Uri.parse("mailto:?subject=" + "blah blah subject"
            + "&body=" + "blah blah body" + "&to=" + "sendme@me.com");
    emailIntent.setData(data);

    startActivity(Intent.createChooser(emailIntent, ""));

结果

选项2

它工作正常，只是它不会过滤掉 FTP

    //Option 2
  emailIntent = new Intent(
            android.content.Intent.ACTION_SEND);
    emailIntent.setType("message/rfc822");
    final String[] toRecipients = new String[] { "sendme@me.com", "", };
    emailIntent.putExtra(android.content.Intent.EXTRA_EMAIL, toRecipients);
    emailIntent.putExtra(android.content.Intent.EXTRA_SUBJECT, "blah blah subject");
    emailIntent.putExtra(android.content.Intent.EXTRA_TEXT,
            Html.fromHtml("blah blah body"));

    startActivity(Intent.createChooser(emailIntent, ""));

结果

两种方法都有一些小缺陷，我向您展示了两种方法，现在由您选择一种。