Android Listview with CheckBox and a button to get the selected option.

A Listview may be single choice or Multiple Choice.

Now i am going to show you a list of Item with Checkbox, once you will select your answer by checking the checkbox and click the bottom Button it will display all the selected answer as well as Total Amount.

Screenshots:- 1) This is first screen once you run the application

Screenshots-2) Select your answer here.

Screenshots:3) Final 

Now in order to achieve plz follow foloowing steps:-

Step1) res/layout/activity_main.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <ListView
        android:id="@+id/lvMain"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1" >
    </ListView>

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:layout_marginTop="5dp"
        android:onClick="showResult"
        android:text="@string/get_answer" >
    </Button>

</LinearLayout>

Step2) res/layout/item.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="horizontal" >

    <CheckBox
        android:id="@+id/cbBox"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_vertical" >
    </CheckBox>

    <LinearLayout
        android:id="@+id/linearLayout1"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginLeft="5dp"
        android:orientation="vertical"
        android:layout_weight="1" >

        <TextView
            android:id="@+id/tvDescr"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_margin="5dp"
            android:text=""
            android:textSize="20sp" >
        </TextView>

        <TextView
            android:id="@+id/tvPrice"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="5dp"
            android:text="" >
        </TextView>
    </LinearLayout>

    <ImageView
        android:id="@+id/ivImage"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:src="@drawable/ic_launcher"
        android:layout_gravity="right"
        android:contentDescription="@string/app_name" >
    </ImageView>

</LinearLayout>

Step3) src/Product.java

package com.amit.listview;

public class Product {
    String name;
      int price;
      int image;
      boolean box;
     

      Product(String _describe, int _price, int _image, boolean _box) {
        name = _describe;
        price = _price;
        image = _image;
        box = _box;
      }
    }
Step4) src/ListAdapter.java

package com.amit.listview;

import java.util.ArrayList;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.ImageView;
import android.widget.TextView;

public class ListAdapter extends BaseAdapter {
    Context ctx;
    LayoutInflater lInflater;
    ArrayList<Product> objects;

    ListAdapter(Context context, ArrayList<Product> products) {
        ctx = context;
        objects = products;
        lInflater = (LayoutInflater) ctx
                .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    }

    @Override
    public int getCount() {
        return objects.size();
    }

    @Override
    public Object getItem(int position) {
        return objects.get(position);
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        View view = convertView;
        if (view == null) {
            view = lInflater.inflate(R.layout.item, parent, false);
        }

        Product p = getProduct(position);

        ((TextView) view.findViewById(R.id.tvDescr)).setText(p.name);
        ((TextView) view.findViewById(R.id.tvPrice)).setText(p.price + "");
        ((ImageView) view.findViewById(R.id.ivImage)).setImageResource(p.image);

        CheckBox cbBuy = (CheckBox) view.findViewById(R.id.cbBox);
        cbBuy.setOnCheckedChangeListener(myCheckChangList);
        cbBuy.setTag(position);
        cbBuy.setChecked(p.box);
        return view;
    }

    Product getProduct(int position) {
        return ((Product) getItem(position));
    }

    ArrayList<Product> getBox() {
        ArrayList<Product> box = new ArrayList<Product>();
        for (Product p : objects) {
            if (p.box)
                box.add(p);
        }
        return box;
    }

    OnCheckedChangeListener myCheckChangList = new OnCheckedChangeListener() {
        public void onCheckedChanged(CompoundButton buttonView,
                boolean isChecked) {
            getProduct((Integer) buttonView.getTag()).box = isChecked;
        }
    };
}


Step 5) Your MainActivty.java

package com.amit.listview;

import java.util.ArrayList;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.ListView;
import android.widget.Toast;

public class MainActivity extends Activity {

    ArrayList<Product> products = new ArrayList<Product>();
    ListAdapter boxAdapter;

      /** Called when the activity is first created. */
      public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        fillData();
        boxAdapter = new ListAdapter(this, products);

        ListView lvMain = (ListView) findViewById(R.id.lvMain);
        lvMain.setAdapter(boxAdapter);
      }

      void fillData() {
        for (int i = 1; i <= 20; i++) {
          products.add(new Product("Product " + i, i * 100,
              R.drawable.ic_launcher, false));
        }
      }

      public void showResult(View v) {
        String result = "Selected Product are :";
        int totalAmount=0;
        for (Product p : boxAdapter.getBox()) {
          if (p.box){
            result += "\n" + p.name;
            totalAmount+=p.price;
          }
        }
        Toast.makeText(this, result+"\n"+"Total Amount:="+totalAmount, Toast.LENGTH_LONG).show();
      }
    }

Step6) res/values/strings.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>

    <string name="app_name">ListViewWithButton</string>
    <string name="hello_world">Hello world!</string>
    <string name="menu_settings">Settings</string>
     <string name="get_answer">Click to get Selected Answer</string>

</resources>

Download full source code click ListWithButton