发送短信

private void sendMessage(String contact, String message) {

        SmsManager smsManager = SmsManager.getDefault();

        PendingIntent sentIntent = PendingIntent.getBroadcast(this, 0, new Intent(), 0);

        if (message.length() > 70) {

            List<String> msgs = smsManager.divideMessage(message);

            for (String msg : msgs) {

                smsManager.sendTextMessage(contact, null, msg, sentIntent, null);

            }

        } else {

            smsManager.sendTextMessage(contact, null, message, sentIntent, null);

        }

        Toast.makeText(this, "短信发送完成", Toast.LENGTH_LONG).show();

    }