public void  sendEmail(View view){

        Intent intent = new Intent(Intent.ACTION_SENDTO);

        intent.setData(Uri.parse("mailto:")); // only email apps should handle this

        //intent.putExtra(Intent.EXTRA_EMAIL, addresses);

        intent.putExtra(Intent.EXTRA_SUBJECT, "订单汇总");

        if (intent.resolveActivity(getPackageManager()) != null) {

            startActivity(intent);

        }

    }