在某些设备上使用SENDTO发送带附件的电子邮件不起作用

Question

起初你会想到"等等,这个问题是重复的!".继续阅读.

我正在尝试使用Intent ACTION_SENDTO(使用电子邮件URI作为数据),以便只有电子邮件应用程序响应.

(使用ACTION_SEND启动标准"SEND"选择器而没有数据URI意味着非电子邮件应用程序(如Google Drive)也会响应).

我的问题是附件适用ACTION_SEND于所有设备,但是 - 当ACTION_SENDTO只使用某些设备正确附加文件时.Nexus 7可以使用,但三星Galaxy Tab和Acer Iconia 没有.

您可以在下面看到不同的方法:

    String email    = getActivity().getResources().getString(R.string.supportEmail);
    String subject  = getActivity().getResources().getString(R.string.sFeedback);
    subject         = String.format(subject, 
                      getActivity().getResources().getString(R.string.productName));
    String content  = getActivity().getResources().getString(R.string.whatFeedbackWouldYouLikeToProvide) + "\n\n" + 
                      mMessage.getText().toString();
    File toSend     = new File(outfile);

    if(toSend.exists()) {
        Log.e("Feedback", "File path: " + toSend.getAbsolutePath());

        Intent emailIntent = new Intent(android.content.Intent.ACTION_SENDTO);
        emailIntent.setData(Uri.parse("mailto:" +email));
        emailIntent.putExtra(android.content.Intent.EXTRA_STREAM,   Uri.fromFile(toSend));
        emailIntent.putExtra(android.content.Intent.EXTRA_SUBJECT,  subject);               
        emailIntent.putExtra(android.content.Intent.EXTRA_TEXT,     content);  

    /*  Intent emailIntent = new Intent(Intent.ACTION_SEND);
        emailIntent.setType("message/rfc822");
        emailIntent.putExtra(Intent.EXTRA_EMAIL  , new String[]{email});
        emailIntent.putExtra(Intent.EXTRA_SUBJECT, subject);
        emailIntent.putExtra(Intent.EXTRA_TEXT   , content);
        emailIntent.putExtra(Intent.EXTRA_STREAM , Uri.fromFile(toSend)); */

        try {
            startActivity(emailIntent);
        } catch (ActivityNotFoundException anfe) {
            Toast.makeText(getActivity(), getResources().getString(R.string.pleaseInstallAnEmailClientInOrderToSendUsFeedback), 8000).show();
        }
    }

您可以看到文件路径似乎不是问题,我在一些报告中添加了报告:

三星给予:

04-11 11:40:09.953: E/Feedback(6286): File path: /storage/sdcard0/logs.zip

Nexus给予:

04-11 11:38:59.249: E/Feedback(12702): File path: /storage/emulated/0/logs.zip

(两者都基于getExternalStorageDirectory()确保跨应用程序访问).

有人知道为什么会有区别吗？

Answer 1

我想出的唯一解决方案是以下方案.它是我在寻找完整答案时找到的其他一些东西的混合物.以下内容仅显示电子邮件应用,并允许包含附件.最重要的部分在这里找到:https://stackoverflow.com/a/8550043/4927659

ArrayList<Uri> uris = new ArrayList<>();
uris.add(Uri.parse("file://" + filepath)); 
//filepath is something like that: /mnt/sdcard/DCIM/DSC0001.JPG
Intent emailIntent = new Intent(Intent.ACTION_SENDTO, Uri.fromParts(
                "mailto", "example@gmail.com", null));
        emailIntent.putExtra(Intent.EXTRA_SUBJECT, "Mail subject");
        List<ResolveInfo> resolveInfos = getPackageManager().queryIntentActivities(emailIntent, 0);
        List<LabeledIntent> intents = new ArrayList<>();
        for (ResolveInfo info : resolveInfos) {
            Intent intent = new Intent(Intent.ACTION_SEND_MULTIPLE);
            intent.setComponent(new ComponentName(info.activityInfo.packageName, info.activityInfo.name));
            intent.putExtra(Intent.EXTRA_EMAIL, new String[]{"example@gmail.com"});
            intent.putExtra(Intent.EXTRA_SUBJECT, "Mail subject");
            intent.putParcelableArrayListExtra(Intent.EXTRA_STREAM, uris); //ArrayList<Uri> of attachment Uri's
            intents.add(new LabeledIntent(intent, info.activityInfo.packageName, info.loadLabel(getPackageManager()), info.icon));
        }
        Intent chooser = Intent.createChooser(intents.remove(intents.size() - 1), "Send email with attachments...");
        chooser.putExtra(Intent.EXTRA_INITIAL_INTENTS, intents.toArray(new LabeledIntent[intents.size()]));
        startActivity(chooser);

Answer 2

尝试通过 ACTION_SENDTO 解决活动，但实际上是通过 ACTION_SEND 发送。

Intent intent = new Intent(Intent.ACTION_SENDTO, Uri.fromParts(
                    "mailto", "", null));
            intent.putExtra(Intent.EXTRA_SUBJECT, title);
            intent.putExtra(Intent.EXTRA_TEXT, text);
            intent.putExtra(Intent.EXTRA_STREAM, getSnapshotUri(snapshot, context, event));

            List<ResolveInfo> resolveInfos = context.getPackageManager().queryIntentActivities(intent, 0);
            if (resolveInfos.size() == 0) {
                new AlertDialog.Builder(context)
                        .setMessage(R.string.no_mail_app)
                        .setPositiveButton(R.string.ok, null)
                        .show();
            } else {
                String packageName = resolveInfos.get(0).activityInfo.packageName;
                String name = resolveInfos.get(0).activityInfo.name;

                intent.setAction(Intent.ACTION_SEND);
                intent.setComponent(new ComponentName(packageName, name));

                context.startActivity(intent);
            }