val checkRadioButtonId = radioGroup.checkedRadioButtonId

            if(checkRadioButtonId != -1){
                val radioButtonChecked: RadioButton = findViewById(checkRadioButtonId)
                Toast.makeText(this, radioButtonChecked.text, Toast.LENGTH_SHORT).show()
            }
            else{
                Toast.makeText(this, "you have not choose any chose", Toast.LENGTH_SHORT).show()
            }