How to add numbers from listview?

Question

Java

I have a list in which there is a textview where prices are indicated and I need to give a general price tag for all goods ... the list is taken from the database, what can be done there? I use Sugar ORM to simplify

protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_korzina);
        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);


        summa = (TextView) findViewById(R.id.zakaz);
        button = (ImageButton) findViewById(R.id.button);
        button2 = (ImageButton) findViewById(R.id.button2);
        button3 = (ImageButton) findViewById(R.id.button3);
        menu = (ImageButton) findViewById(R.id.menu);
        imageButton3 = (ImageButton) findViewById(R.id.imageButton3);
        imageButton4 = (ImageButton) findViewById(R.id.imageButton4);
        imageButton5 = (ImageButton) findViewById(R.id.imageButton5);
        imageButton6 = (ImageButton) findViewById(R.id.imageButton6);
        zaka = (Button) findViewById(R.id.zaka);
        button.setOnClickListener(this);
        button2.setOnClickListener(this);
        button3.setOnClickListener(this);
        menu.setOnClickListener(this);
        imageButton3.setOnClickListener(this);
        imageButton4.setOnClickListener(this);
        imageButton5.setOnClickListener(this);
        imageButton6.setOnClickListener(this);
        zaka.setOnClickListener(this);

        DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
        ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
                this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
        drawer.setDrawerListener(toggle);
        toggle.syncState();

        NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
        navigationView.setNavigationItemSelectedListener(this);

        ArrayList<Korz> mData = (ArrayList<Korz>) Korz.listAll(Korz.class);
        mListView = (ListView) findViewById(R.id.listView);
        mAdapter = new MyAdapater(this, R.layout.item_korz, R.layout.item_action_korz, mData);
        mListView.setAdapter(mAdapter);


    }


    @Override
    public void onBackPressed() {
        DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
        if (drawer.isDrawerOpen(GravityCompat.START)) {
            drawer.closeDrawer(GravityCompat.START);
        } else {
            super.onBackPressed();
        }
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {

        return true;
    }


    @SuppressWarnings("StatementWithEmptyBody")
    @Override
    public boolean onNavigationItemSelected(MenuItem item) {
        // Handle navigation view item clicks here.
        int id = item.getItemId();

        if (id == R.id.akcii) {
            Intent intent12 = new Intent(this, Akcii.class);
            startActivity(intent12);
            finish();


            // Handle the camera action
        } else if (id == R.id.oplata) {
            Intent intent22 = new Intent(this, Oplata.class);
            startActivity(intent22);
            finish();


        } else if (id == R.id.dostavka) {
            Intent intent32 = new Intent(this, Dostavka.class);
            startActivity(intent32);
            finish();

        } else if (id == R.id.onas) {
            Intent intent42 = new Intent(this, O_nas.class);
            startActivity(intent42);
            finish();

        } else if (id == R.id.inmoney) {
            Intent intent52 = new Intent(this, InMoney.class);
            startActivity(intent52);
            finish();

        } else if (id == R.id.zakaz) {
            Intent intent62 = new Intent(this, Zakaz.class);
            startActivity(intent62);
            finish();

        }

        DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
        drawer.closeDrawer(GravityCompat.START);
        return true;
    }

    @Override
    public void onClick(View view) {
        switch (view.getId()) {
            case R.id.button:
                Intent intent12 = new Intent(this, Cold.class);
                startActivity(intent12);
                finish();
                break;
            case R.id.button2:
                List<Point> allPoints = Point.listAll(Point.class);

                summa.setText(allPoints.toString());
                break;
            case R.id.button3:
                Intent intent2 = new Intent(this, Izbrannoe.class);
                startActivity(intent2);
                finish();
                break;
            case R.id.menu:
                Intent intent3 = new Intent(this, StartMenu.class);
                startActivity(intent3);
                finish();
                break;
            case R.id.zaka:
            Point point = new Point( "point", 12);
                point.save();

                break;
            case R.id.imageButton3:
                Korz korz = new Korz("Запеченые с сыром", 219, getResources().getIdentifier(String.valueOf(R.drawable.zapssir), "drawable", getApplicationContext().getPackageName()), "копчёный угорь, крабовая палочка , огурец, тобика красная, сливочный сыр");
                korz.save();
                Intent intent = new Intent(this, Korzina.class);
                startActivity(intent);
                finish();
                break;
            default:
                break;

        }
    }

    class MyAdapater extends SwipeLayoutAdapterKorz<Korz> {
        private List<Korz> _data;

        ArrayList objects;

        public MyAdapater(Activity context, int contentViewResourceId, int actionViewResourceId, List<Korz> objects) {
            super(context, contentViewResourceId, actionViewResourceId, objects);
            _data = objects;

        }

        //实现setContentView方法
        @Override
        public void setContentView(View contentView, int position, HorizontalScrollView parent) {
            Korz p = ((Korz) getItem(position));
            TextView pricecent = (TextView) contentView.findViewById(R.id.pricecent);
            pricecent.setText(p.price*5 + "руб");
            TextView tv1 = (TextView) contentView.findViewById(R.id.name);
            tv1.setText(p.name);
            ImageView tv3 = (ImageView) contentView.findViewById(R.id.imageView2);
            int resID = getResources().getIdentifier(String.valueOf(p.image), "drawable", getApplicationContext().getPackageName());
            tv3.setImageResource(resID);
            TextView tv2 = (TextView) contentView.findViewById(R.id.textView);
            tv2.setText(p.sostav);
        }

        //实现setActionView方法
        @Override
        public void setActionView(final View contentView, final int position, final HorizontalScrollView parent) {
            Korz p = ((Korz) getItem(position));
            final String name = p.name;
            final int price = p.price;
            final int image = getResources().getIdentifier(String.valueOf(p.image), "drawable", getPackageName());
            final String sostav = p.sostav;
            final TextView pnt = (TextView) contentView.findViewById(R.id.point);




            contentView.findViewById(R.id.action).setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    Izb contact = new Izb(name, price, image, sostav);
                    contact.save();


                    Toast.makeText(getApplicationContext(), name + " добавлено в корзину", Toast.LENGTH_SHORT).show();


                }
            });
            contentView.findViewById(R.id.plus).setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    TextView cnt=(TextView)findViewById(R.id.skolko);
                    CharSequence zz = cnt.getText(); // получем содержимое обьекта
                    int pz= new Integer(zz.toString()); // преобразовываем в число
                    pz++; // прибавляем 1
                    cnt.setText(Integer.toString(pz));
                   // получем содержимое обьекта


                }
            });
            contentView.findViewById(R.id.minus).setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    TextView cnt=(TextView)findViewById(R.id.textView); //cnt - обьект "надпись"
                    CharSequence zz = cnt.getText(); // получем содержимое обьекта
                    int pz= Integer.valueOf(zz.toString()); // преобразовываем в число
                    pz--; // прибавляем 1
                    cnt.setText(Integer.toString(pz)); // преобразовываем в строку и возвращаем в обьект "надпись"
                }
            });
        }


    }
}

here is the db class

public class Korz extends SugarRecord {
    int price;
    int image;
    String sostav;
    @Unique
    String name;


    public Korz() {
    }


    public Korz(String name, int price, int image, String sostav ) {
        this.name = name;
        this.price = price;
        this.image = image;
        this.sostav = sostav;

    }

    @Override
    public String toString() {
        return "Korz{" +
                "name='" + name + '\'' +
                ", mail='" + price + '\'' +
                ", image='" + image + '\'' +
                '}';
    }
}

Answer 1

In Adapter, make a method that calculates and returns the sum, place its call after
mListView.setAdapter(mAdapter);