i want to send SMS from Android application using SMS manager

Question

I have tried sending but the SMS is automatically sent without getting known. I want to send SMS with field of To to be predefined from my code and can get

Answer 1

private void sendSMS(String phoneNumber, String message)
    {
        SmsManager sms = SmsManager.getDefault();
        sms.sendTextMessage(phoneNumber, null, message, null, null);
    }

Call this method like 

btnSendSMS.setOnClickListener(new View.OnClickListener()
        {

            public void onClick(View v)
            {
                sendSMS("5556", "Hello my friends!");

            }
        });

Add these into your manifest: