Android: tostni kechiktirish

Qanday qilib tostni kechiktira olaman? 15-60 sekund kabi? Mana mening kodim:

btnSend.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
                String phoneNo = editTextRecipient.getText().toString();
                String message = editTextNewMessage.getText().toString(); 
                boolean split = false;

                if (phoneNo.length()>0 && message.length()>0)   
                    Toast.makeText(getBaseContext(), 
                            "Message sent!", 
                            Toast.LENGTH_SHORT).show();
                  //sendSMS(phoneNo, message, split);  
                else
                    Toast.makeText(getBaseContext(), 
                        "Please enter both phone number and message.", 
                        Toast.LENGTH_SHORT).show();
            }
        });        
    }

Kechikishni qanday amalga oshirishim kerak?