使用bytestream使用share-intent将excel工作表添加到电子邮件中

Question

我尝试使用以下代码在android / java中创建和发送excel表，但是我无法完成将ByteArrayDataSource添加到intent中的正确语法的代码：

    Intent sharingIntent = new Intent(android.content.Intent.ACTION_SEND);
    sharingIntent.setType("text/plain");
    sharingIntent.putExtra(android.content.Intent.EXTRA_SUBJECT, "Your excel sheet");
    sharingIntent.putExtra(android.content.Intent.EXTRA_TEXT, "Hello! I am sending the excel sheet");

    Workbook xlsFile = new HSSFWorkbook();
    CreationHelper helper = xlsFile.getCreationHelper();
    Sheet sheet1 = xlsFile.createSheet("New worksheet");

    /* fill excel sheet */

    ByteArrayOutputStream bos = new ByteArrayOutputStream();
    try {
        xlsFile.write(bos); // write excel data to a byte array
        DataSource fds = new ByteArrayDataSource(bos.toByteArray(), "application/vnd.ms-excel");
        bos.close();
        sharingIntent.putExtra(Intent.EXTRA_STREAM, ??? /* how to add the ByteArrayDataSource here?? */);
    } catch (IOException e) {
        e.printStackTrace();
    }

    startActivity(Intent.createChooser(sharingIntent, "Send via"));

如何附加excel表而不将其存储在SD卡上？

谢谢！

祝你好运， 尔根

更新

首先通过存储到SD卡完成它：

                    try {
                        File sdCard = Environment.getExternalStorageDirectory();
                        File file = new File(sdCard, "file.xls");
                        file.createNewFile();

                        FileOutputStream fo = new FileOutputStream(file);
                        ByteArrayOutputStream bos = new ByteArrayOutputStream();
                        xlsFile.write(bos);
                        fo.write(bos.toByteArray());
                        bos.close();
                        fo.flush();
                        fo.close();

                        sharingIntent.putExtra(Intent.EXTRA_STREAM, Uri.parse("file:///" + file.getPath()));
                    } catch (IOException e) {
                        e.printStackTrace();
                    }

如果有人知道某种方法而不存储它，请告诉我！谢谢！