AddressActivity.java

package com.mrwujay.cascade.activity;

import java.io.InputStream;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;

import com.mrwujay.cascade.R;
import com.mrwujay.cascade.R.id;
import com.mrwujay.cascade.R.layout;
import com.mrwujay.cascade.model.CityModel;
import com.mrwujay.cascade.model.DistrictModel;
import com.mrwujay.cascade.model.ProvinceModel;
import com.mrwujay.cascade.service.XmlParserHandler;

import kankan.wheel.widget.OnWheelChangedListener;
import kankan.wheel.widget.WheelView;
import kankan.wheel.widget.adapters.ArrayWheelAdapter;
import android.os.Bundle;
import android.app.Activity;
import android.content.res.AssetManager;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;

public class AddressActivity extends Activity implements OnClickListener, OnWheelChangedListener {
	private WheelView mViewProvince;
	private WheelView mViewCity;
	private WheelView mViewDistrict;
	private Button mBtnConfirm;
	
	/**
	 * ����ʡ
	 */
	protected String[] mProvinceDatas;
	/**
	 * key - ʡ value - ��
	 */
	protected Map<String, String[]> mCitisDatasMap = new HashMap<String, String[]>();
	/**
	 * key - �� values - ��
	 */
	protected Map<String, String[]> mDistrictDatasMap = new HashMap<String, String[]>();
	
	/**
	 * key - �� values - �ʱ�
	 */
	protected Map<String, String> mZipcodeDatasMap = new HashMap<String, String>(); 

	/**
	 * ��ǰʡ������
	 */
	protected String mCurrentProviceName;
	/**
	 * ��ǰ�е�����
	 */
	protected String mCurrentCityName;
	/**
	 * ��ǰ��������
	 */
	protected String mCurrentDistrictName ="";
	
	/**
	 * ��ǰ������������
	 */
	protected String mCurrentZipCode ="";
	
	/**
	 * ����ʡ������XML����
	 */
	
    protected void initProvinceDatas()
	{
		List<ProvinceModel> provinceList = null;
    	AssetManager asset = getAssets();
        try {
            InputStream input = asset.open("province_data.xml");
            // ����һ������xml�Ĺ�������
			SAXParserFactory spf = SAXParserFactory.newInstance();
			// ����xml
			SAXParser parser = spf.newSAXParser();
			XmlParserHandler handler = new XmlParserHandler();
			parser.parse(input, handler);
			input.close();
			// ��ȡ��������������
			provinceList = handler.getDataList();
			//*/ ��ʼ��Ĭ��ѡ�е�ʡ���С���
			if (provinceList!= null && !provinceList.isEmpty()) {
				mCurrentProviceName = provinceList.get(0).getName();
				List<CityModel> cityList = provinceList.get(0).getCityList();
				if (cityList!= null && !cityList.isEmpty()) {
					mCurrentCityName = cityList.get(0).getName();
					List<DistrictModel> districtList = cityList.get(0).getDistrictList();
					mCurrentDistrictName = districtList.get(0).getName();
					mCurrentZipCode = districtList.get(0).getZipcode();
				}
			}
			//*/
			mProvinceDatas = new String[provinceList.size()];
        	for (int i=0; i< provinceList.size(); i++) {
        		// ��������ʡ������
        		mProvinceDatas[i] = provinceList.get(i).getName();
        		List<CityModel> cityList = provinceList.get(i).getCityList();
        		String[] cityNames = new String[cityList.size()];
        		for (int j=0; j< cityList.size(); j++) {
        			// ����ʡ����������е�����
        			cityNames[j] = cityList.get(j).getName();
        			List<DistrictModel> districtList = cityList.get(j).getDistrictList();
        			String[] distrinctNameArray = new String[districtList.size()];
        			DistrictModel[] distrinctArray = new DistrictModel[districtList.size()];
        			for (int k=0; k<districtList.size(); k++) {
        				// ����������������/�ص�����
        				DistrictModel districtModel = new DistrictModel(districtList.get(k).getName(), districtList.get(k).getZipcode());
        				// ��/�ض��ڵ��ʱ࣬���浽mZipcodeDatasMap
        				mZipcodeDatasMap.put(districtList.get(k).getName(), districtList.get(k).getZipcode());
        				distrinctArray[k] = districtModel;
        				distrinctNameArray[k] = districtModel.getName();
        			}
        			// ��-��/�ص����ݣ����浽mDistrictDatasMap
        			mDistrictDatasMap.put(cityNames[j], distrinctNameArray);
        		}
        		// ʡ-�е����ݣ����浽mCitisDatasMap
        		mCitisDatasMap.put(provinceList.get(i).getName(), cityNames);
        	}
        } catch (Throwable e) {  
            e.printStackTrace();  
        } finally {
        	
        } 
	}

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_address);
		setUpViews();
		setUpListener();
		setUpData();
	}
	
	private void setUpViews() {
		mViewProvince = (WheelView) findViewById(R.id.id_province);
		mViewCity = (WheelView) findViewById(R.id.id_city);
		mViewDistrict = (WheelView) findViewById(R.id.id_district);
		mBtnConfirm = (Button) findViewById(R.id.btn_confirm);
	}
	
	private void setUpListener() {
    	// ���change�¼�
    	mViewProvince.addChangingListener(this);
    	// ���change�¼�
    	mViewCity.addChangingListener(this);
    	// ���change�¼�
    	mViewDistrict.addChangingListener(this);
    	// ���onclick�¼�
    	mBtnConfirm.setOnClickListener(this);
    }
	
	private void setUpData() {
		initProvinceDatas();
		mViewProvince.setViewAdapter(new ArrayWheelAdapter<String>(AddressActivity.this, mProvinceDatas));
		// ���ÿɼ���Ŀ����
		mViewProvince.setVisibleItems(7);
		mViewCity.setVisibleItems(7);
		mViewDistrict.setVisibleItems(7);
		updateCities();
		updateAreas();
	}

	@Override
	public void onChanged(WheelView wheel, int oldValue, int newValue) {
		// TODO Auto-generated method stub
		if (wheel == mViewProvince) {
			updateCities();
		} else if (wheel == mViewCity) {
			updateAreas();
		} else if (wheel == mViewDistrict) {
			mCurrentDistrictName = mDistrictDatasMap.get(mCurrentCityName)[newValue];
			mCurrentZipCode = mZipcodeDatasMap.get(mCurrentDistrictName);
		}
	}

	/**
	 * ���ݵ�ǰ���У�������WheelView����Ϣ
	 */
	private void updateAreas() {
		int pCurrent = mViewCity.getCurrentItem();
		mCurrentCityName = mCitisDatasMap.get(mCurrentProviceName)[pCurrent];
		String[] areas = mDistrictDatasMap.get(mCurrentCityName);

		if (areas == null||areas.length==0) {
			areas = new String[] { "" };
		}
		mViewDistrict.setViewAdapter(new ArrayWheelAdapter<String>(this, areas));
		mViewDistrict.setCurrentItem(0);
		mCurrentDistrictName = areas[0];
		mCurrentZipCode = mZipcodeDatasMap.get(mCurrentDistrictName);
	}

	/**
	 * ���ݵ�ǰ��ʡ��������WheelView����Ϣ
	 */
	private void updateCities() {
		int pCurrent = mViewProvince.getCurrentItem();
		mCurrentProviceName = mProvinceDatas[pCurrent];
		String[] cities = mCitisDatasMap.get(mCurrentProviceName);
		if (cities == null) {
			cities = new String[] { "" };
		}
		mViewCity.setViewAdapter(new ArrayWheelAdapter<String>(this, cities));
		mViewCity.setCurrentItem(0);
		updateAreas();
	}

	@Override
	public void onClick(View v) {
		switch (v.getId()) {
		case R.id.btn_confirm:
			showSelectedResult();
			break;
		default:
			break;
		}
	}

	private void showSelectedResult() {
		Toast.makeText(AddressActivity.this, "��ǰѡ��:"+mCurrentProviceName+","+mCurrentCityName+","
				+mCurrentDistrictName+","+mCurrentZipCode, Toast.LENGTH_SHORT).show();
	}
}