无法将多个文件附加到Android中的电子邮件中

Question

我想将多个文件附加到电子邮件中.

首先,我准备了一份清单Uri.

void prepareListOfUri()
{
    listOfUri = new ArrayList<Uri>();
    File fileTemp = new File(android.os.Environment.getExternalStorageDirectory(), "BuyNowImages");
    fileTemp.mkdirs();

    for (int i = 0; i < listOfImageView.size(); i++)
    {
        try
        {
            ByteArrayOutputStream bos = new ByteArrayOutputStream();
            Drawable drawable = listOfImageView.get(i).getDrawable();
            Bitmap bitmapPicked = ((BitmapDrawable) drawable).getBitmap();
            bitmapPicked.compress(CompressFormat.JPEG, 75, bos);
            byte[] image = bos.toByteArray();
            File file = new File(fileTemp, "buynow_product" + i + ".jpg");
            file.createNewFile();
            // write the bytes in file
            FileOutputStream fo = new FileOutputStream(file);
            fo.write(image);
            Uri uri = Uri.parse("file://" + file.getAbsolutePath());
            listOfUri.add(i, uri);
        } catch (Exception e)
        {
            // TODO: handle exception
            e.printStackTrace();
        }
    }
}

并附加和发送电子邮件

void sendMultipleAttachments()
    {
        try
        {
            Intent intentEmail = new Intent(Intent.ACTION_SEND);
            intentEmail.setType("text/plain");
            String[] recipients = new String[] { "" };

            intentEmail.putExtra(Intent.EXTRA_EMAIL, recipients);
            intentEmail.putExtra(Intent.EXTRA_SUBJECT, "subject of email");
            intentEmail.putExtra(Intent.EXTRA_TEXT, "body of email");
            intentEmail.setType("image/jpeg");
            intentEmail.putParcelableArrayListExtra(Intent.EXTRA_STREAM, listOfUri);
            startActivity(intentEmail);
        } catch (android.content.ActivityNotFoundException ex)
        {
            Toast.makeText(this, "There are no email clients installed.", Toast.LENGTH_SHORT).show();
            ex.printStackTrace();
        } catch (Exception e)
        {
            e.printStackTrace();
            Toast.makeText(this, "Exception " + e.getMessage(), Toast.LENGTH_SHORT).show();
        }
    }

我已经Uri通过单独发送每个文件检查了s 的列表.但是,通过使用上面的代码发送多个文件,我获得以下Exception.

Key android.intent.extra.STREAM expected Parcelable but value was a java.util.ArrayList.  The default value <null> was returned.

Answer 1

而不是Intent.ACTION_SEND我使用Intent.ACTION_SEND_MULTIPLE它,它的工作原理.

从开发人员文档:

活动操作:将多个数据传递给其他人.比如ACTION_SEND,除了数据是多个.