categoryList.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                String selected =((TextView)view.findViewById(R.id.txtView_Cat)).getText().toString();

                Toast toast = Toast.makeText(getApplicationContext(), selected, Toast.LENGTH_SHORT);
                toast.show();
            }
        });