//Set of parameters for prepareButton method -> side buttons
        Map<Integer, String> sides = new HashMap<>();
        sides.put(R.id.ct_side, "CT");
        sides.put(R.id.tt_side, "TT");

        for (int resource : sides.keySet()) {
            prepareButton(resource, sides.get(resource));
        }
    }

    //Create button
    private void prepareButton(final int resource, final String currentSide) {
        Button button = (Button) findViewById(resource);
        button.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
                //Add chosen side to intent to send it for future use
                intent.putExtra("current side from ChooseSideActivity", currentSide);
                startActivity(intent);
            }
        });
    }