listView actions

MealListActivity.java

        listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                Button deleteMealButton = (Button) findViewById(R.id.delete_meal_button);
                if (listView.getCheckedItemCount() == 0) {
                    deleteMealButton.setVisibility(View.INVISIBLE);
                } else {
                    deleteMealButton.setVisibility(View.VISIBLE);
                }
            }
        });

        listView.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
            @Override
            public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) {
                Meal meal = adapter.getItem(position);
                final AlertDialog.Builder builder = getAlertBuilder(view, mealContract, meal);
                builder.show();
                return true;
            }
        });