stackoverflow15411937

package com.example.stackoverflow;

import java.util.ArrayList;
import java.util.List;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.Spinner;

public class Contact extends Activity{

    public Spinner spinner1, spinner2;
    public Button btnSubmit;

    @Override
    public void onCreate(Bundle savedInstanceState){
        super.onCreate(savedInstanceState);

        setContentView(R.layout.contact);
        findViews();
        addItemsOnSpinner1();
        addItemsOnSpinner2(0);
    }

    private void findViews(){
        spinner1 = (Spinner) findViewById(R.id.spinner1);
        spinner2 = (Spinner) findViewById(R.id.spinner2);
    }

    private void addItemsOnSpinner1() {
        List<String> list = new ArrayList<String>();

        list.add("Please Select");
        list.add("Choice 1");
        list.add("choice 2");

        ArrayAdapter<String> name = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, list);

        name.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);

        spinner1.setAdapter(name);
        spinner1.setOnItemSelectedListener(new OnItemSelectedListener(){
            @Override
            public void onItemSelected(AdapterView<?> arg0, View arg1,int arg2, long arg3) {
                if(arg2>0)
                addItemsOnSpinner2(arg2);
            }
            @Override
            public void onNothingSelected(AdapterView<?> arg0) {
                addItemsOnSpinner2(0);
            }}
        );
    }

    private void addItemsOnSpinner2(int selectedIndex) {

        int positionTop = selectedIndex;

        if(positionTop==0){
            List<String> list = new ArrayList<String>();
            list.add("Please Select");
            ArrayAdapter<String> name0 = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, list);
            name0.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
            spinner2.setAdapter(name0);
        }else if(positionTop==1){
            List<String> list1 = new ArrayList<String>();
            list1.add("Please Select");
            list1.add("item 1");
            list1.add("item 2");
            ArrayAdapter<String> name1 = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, list1);
            name1.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
            spinner2.setAdapter(name1);
        }else if(positionTop==2){
            List<String> list2 = new ArrayList<String>();
            list2.add("Please Select");
            list2.add("item 3");
            list2.add("item 4");
            ArrayAdapter<String> name2 = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, list2);
            name2.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
            spinner2.setAdapter(name2);
        }
    }

}