Android Open Source - MyWeather Choose Area Activity

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Back to project page MyWeather.

License

The source code is released under:

Apache License

Java Source Code

package activity;
/*from  w w w .  j av  a 2 s . c  o  m*/
import java.util.ArrayList;
import java.util.List;
import model.City;
import model.County;
import model.Province;
import util.HttpCallbackListener;
import util.HttpUtil;
import util.Utility;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.app.ProgressDialog;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.os.Handler;
import android.preference.PreferenceManager;
import android.support.v4.widget.SwipeRefreshLayout;
import android.support.v4.widget.SwipeRefreshLayout.OnRefreshListener;
import android.text.TextUtils;
import android.view.View;
import android.view.Window;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
import com.myweather.app.R;
import db.MyWeatherDB;

public class ChooseAreaActivity extends Activity {
  
  public static final int LEVEL_PROVINCE = 0;
  public static final int LEVEL_CITY = 1;
  public static final int LEVEL_COUNTY = 2;
  
  private ProgressDialog progressDialog;
  private TextView titleText;
  private ListView listView;
  private ArrayAdapter<String> adapter;
  private MyWeatherDB myWeatherDB;
  private List<String> dataList = new ArrayList<String>();
  /**
   * Province List
   */
  private List<Province> provinceList;
  /**
   * City List
   */
  private List<City> cityList;
  /**
   * County List
   */
  private List<County> countyList;
  /**
   * selected province
   */
  private Province selectedProvince;
  /**
   * selected city
   */
  private City selectedCity;
  /**
   * selected level
   */
  private int currentLevel;
  private boolean isFromWeatherActivity;
  
  @SuppressLint("InlinedApi")
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);
    isFromWeatherActivity = getIntent().getBooleanExtra("from_weather_activity", false);
    SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
    if(prefs.getBoolean("city_selected", false) && !isFromWeatherActivity){
      Intent intent = new Intent(this, WeatherActivity.class);
      startActivity(intent);
      finish();
      return;
    }
    requestWindowFeature(Window.FEATURE_NO_TITLE);
    setContentView(R.layout.choose_area);
    final SwipeRefreshLayout swipeRefreshLayout = (SwipeRefreshLayout)findViewById(R.id.swipe_container);
    swipeRefreshLayout.setOnRefreshListener(new OnRefreshListener() {
      
      @Override
      public void onRefresh() {
        // TODO Auto-generated method stub
        new Handler().postDelayed(new Runnable() {
          
          @Override
          public void run() {
            // TODO Auto-generated method stub
            swipeRefreshLayout.setRefreshing(false);
          }
        }, 5000);
      }
    });
    swipeRefreshLayout.setColorScheme(android.R.color.holo_blue_bright, 
        android.R.color.holo_green_light, android.R.color.holo_orange_light, android.R.color.holo_red_light);
    listView = (ListView) findViewById(R.id.list_view);
    titleText = (TextView) findViewById(R.id.title_text);
    adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, dataList);
    listView.setAdapter(adapter);
    myWeatherDB = MyWeatherDB.getInstance(this);
    listView.setOnItemClickListener(new OnItemClickListener() {

      @Override
      public void onItemClick(AdapterView<?> parent, View view,
          int position, long id) {
        // TODO Auto-generated method stub
        if (currentLevel == LEVEL_PROVINCE){
          selectedProvince = provinceList.get(position);
          queryCities();
        }else if(currentLevel == LEVEL_CITY){
          selectedCity = cityList.get(position);
          queryCounties();
        }else if(currentLevel == LEVEL_COUNTY){
          String countyCode = countyList.get(position).getCountyCode();
          Intent intent = new Intent(ChooseAreaActivity.this, WeatherActivity.class);
          intent.putExtra("county_code", countyCode);
          startActivity(intent);
          finish();
        }
      }
    });
    queryProvinces();
  }
  
  /**
   * query province
   */
  private void queryProvinces(){
    provinceList = myWeatherDB.loadProvinces();
    if (provinceList.size() > 0){
      dataList.clear();
      for (Province province : provinceList){
        dataList.add(province.getProvinceName());
      }
      adapter.notifyDataSetChanged();
      listView.setSelection(0);
      titleText.setText("??");
      currentLevel = LEVEL_PROVINCE;
    }else {
      queryFromServer(null, "province");
    }
  }
  
  /**
   * query city
   */
  private void queryCities(){
    cityList = myWeatherDB.loadCities(selectedProvince.getId());
    if(cityList.size() > 0){
      dataList.clear();
      for (City city : cityList){
        dataList.add(city.getCityName());
      }
      adapter.notifyDataSetChanged();
      listView.setSelection(0);
      titleText.setText(selectedProvince.getProvinceName());
      currentLevel = LEVEL_CITY;
    } else{
      queryFromServer(selectedProvince.getProvinceCode(), "city");
    }
  }
  
  /**
   * query county
   */
  private void queryCounties(){
    countyList = myWeatherDB.loadCounties(selectedCity.getId());
    if(countyList.size() > 0){
      dataList.clear();
      for (County county : countyList){
        dataList.add(county.getCountyName());
      }
      adapter.notifyDataSetChanged();
      listView.setSelection(0);
      titleText.setText(selectedCity.getCityName());
      currentLevel = LEVEL_COUNTY;
    } else{
      queryFromServer(selectedCity.getCityCode(), "county");
    }
  }
  
  /**
   * query from server
   * @param code
   * @param type
   */
  private void queryFromServer(final String code, final String type){
    String address;
    if(!TextUtils.isEmpty(code)){
      address = "http://www.weather.com.cn/data/list3/city" + code + ".xml";
    }else{
      address = "http://www.weather.com.cn/data/list3/city.xml";
    }
    showProgressDialog();
    HttpUtil.sendHttpRequest(address, new HttpCallbackListener() {
      
      @Override
      public void onFinish(String response) {
        // TODO Auto-generated method stub
        boolean result = false;
        if("province".equals(type)){
          result = Utility.handleProvincesResponse(myWeatherDB, response);
        }else if("city".equals(type)){
          result = Utility.handleCitiesResponse(myWeatherDB, response, selectedProvince.getId());
        }else if("county".equals(type)){
          result = Utility.handleCountiesResponse(myWeatherDB, response, selectedCity.getId());
        }
        if(result){
          runOnUiThread(new Runnable() {
            public void run() {
              closeProgressDialog();
              if("province".equals(type)){
                queryProvinces();
              }else if("city".equals(type)){
                queryCities();
              }else if("county".equals(type)){
                queryCounties();
              }
            }
          });
        }
      }
      
      @Override
      public void onError(Exception e) {
        // TODO Auto-generated method stub
        runOnUiThread(new Runnable() {
          
          @Override
          public void run() {
            // TODO Auto-generated method stub
            closeProgressDialog();
            Toast.makeText(ChooseAreaActivity.this, "????", Toast.LENGTH_SHORT).show();
          }
        });
      }
    });
  }
  
  /**
   * show dialog
   */
  private void showProgressDialog(){
    if(progressDialog == null){
      progressDialog = new ProgressDialog(this);
      progressDialog.setMessage("????...");
      progressDialog.setCanceledOnTouchOutside(false);
    }
    progressDialog.show();
  }
  
  /**
   * close dialog
   */
  private void closeProgressDialog(){
    if(progressDialog != null){
      progressDialog.dismiss();
    }
  }

  @Override
  public void onBackPressed() {
    // TODO Auto-generated method stub
    if(currentLevel == LEVEL_COUNTY){
      queryCities();
    }else if(currentLevel == LEVEL_CITY){
      queryProvinces();
    }else{
      if(isFromWeatherActivity){
        Intent intent = new Intent(this, WeatherActivity.class);
        startActivity(intent);
      }
      finish();
    }
  }
  
  
}

Java Source Code List

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