Android Open Source - meteoapp Meteoapp Activity

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License

The source code is released under:

MIT License

Java Source Code

package pl.sznapka.meteoapp;
//from  www  . j a  v a  2  s  .c  o  m
import java.util.ArrayList;
import java.util.HashMap;

import pl.sznapka.meteo.fetcher.CityFetcher;
import pl.sznapka.meteo.fetcher.FetcherException;
import pl.sznapka.meteo.fetcher.StateFetcher;
import pl.sznapka.meteo.http.HttpClient;
import pl.sznapka.meteo.valueobject.City;
import pl.sznapka.meteo.valueobject.Forecast;
import pl.sznapka.meteo.valueobject.State;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.ProgressDialog;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.ArrayAdapter;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.Spinner;

public class MeteoappActivity extends Activity {

  public ArrayList<State> states;
  public HashMap<String, ArrayList<City>> cities;
  public ArrayList<Integer> checkboxes;
  CacheManager cache;
  ChoosenForecast choosenForecast;
  boolean onCreateCalled = false;
  
  /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.form);
        
        cache = new CacheManager(getCacheDir());
        cities = (HashMap<String, ArrayList<City>>) cache.loadFromCache("cities");
        if (null == cities) {
          cities = new HashMap<String, ArrayList<City>>();
        }
        initStateSpinner();

        attachCheckboxListeners();
        findViewById(R.id.buttonShowMeteo).setOnClickListener(
            new ShowMeteoButtonListener());
        
        choosenForecast = (ChoosenForecast) cache.loadFromCache("forecast");
        if (choosenForecast != null) {
          Intent intent = new Intent(this, ForecastActivity.class);
      Bundle bundle = new Bundle();
      bundle.putSerializable("choosenForecast", choosenForecast);
         intent.putExtras(bundle);
      startActivity(intent);
        }
        onCreateCalled = true;
    }
    
    protected void initStateSpinner() {
      
         ((Spinner)findViewById(R.id.city)).setEnabled(false);
         
         ArrayList<String> items = new ArrayList<String>();
         items.add("Wybierz wojewdztwo");
         states = (new StateFetcher()).fetch();
         for (State state : states) {
       items.add(state.name);
      }
         
         Spinner statesSpinner = (Spinner)findViewById(R.id.state);
         ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
             android.R.layout.simple_spinner_item, items);
         statesSpinner.setAdapter(adapter);
         statesSpinner.setOnItemSelectedListener(new StatesSpinnerListener());
    }

    @Override
    protected void onResume() {
      System.out.println("on resume, oncratecalled: " + onCreateCalled);
      if (!onCreateCalled && choosenForecast != null) {
        System.out.println("Choosen forecast for city " + choosenForecast.forecast.city.name + " state " + choosenForecast.forecast.city.state.name);
        Spinner statesSpinner = (Spinner)findViewById(R.id.state);
        
        statesSpinner.setSelection(
            ((ArrayAdapter<String>) statesSpinner.getAdapter()).getPosition(choosenForecast.forecast.city.state.name));
        setSelectedTypes(choosenForecast.types);
      }
      onCreateCalled = false;
      super.onResume();
    }

  /**
     * Attaches checkboxes listener
     */
    protected void attachCheckboxListeners() {
      
      checkboxes = new ArrayList<Integer>();
      checkboxes.add(R.id.checkBoxTemperature);
      checkboxes.add(R.id.checkBoxRain);
      checkboxes.add(R.id.checkBoxPressure);
      checkboxes.add(R.id.checkBoxWind);
      checkboxes.add(R.id.checkBoxVisibility);
      checkboxes.add(R.id.checkBoxClouds);
      for (Integer id : checkboxes) {
      CheckBox checkbox = (CheckBox)findViewById(id);
      checkbox.setOnCheckedChangeListener(new ChecboxListener());
    }
    }
    
    protected void setButtonEnabledIfAllCriteriaSatisfied(boolean initial) {
    
      boolean allCriteriaSatisfied = initial;
    if (!initial) {
      for (Integer id : checkboxes) {
        CheckBox checkbox = (CheckBox)findViewById(id);
        if (checkbox.isChecked()) {
          allCriteriaSatisfied = true;
          break;
        }
      }
    }
    Spinner city = (Spinner)findViewById(R.id.city);
    allCriteriaSatisfied = allCriteriaSatisfied & (city.getSelectedItemPosition()
        != Spinner.INVALID_POSITION);
    findViewById(R.id.buttonShowMeteo).setEnabled(allCriteriaSatisfied);      
    }

  private class ChecboxListener implements OnCheckedChangeListener {

    @Override
    public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {

      setButtonEnabledIfAllCriteriaSatisfied(isChecked);
    }
  }
    
  private class StatesSpinnerListener implements OnItemSelectedListener {
      
      State state;
      
    @Override
    public void onItemSelected(AdapterView<?> parent, View view, int pos, long id) {

      if (pos > 0) {
        state = states.get(pos - 1);
        System.out.println("Selected state: " + state.name);
            ((Spinner)findViewById(R.id.city)).setEnabled(false);
        new FetchCitiesTask(choosenForecast).execute(state);
      }
    }

    @Override
    public void onNothingSelected(AdapterView<?> arg0) {
    }
  }

  private class ShowMeteoButtonListener implements OnClickListener {

    @Override
    public void onClick(View button) {
      
      Spinner citiesSpinner = (Spinner) findViewById(R.id.city);
      if (citiesSpinner.isEnabled()) {
        State state = states.get(((Spinner)findViewById(R.id.state)).getSelectedItemPosition() - 1);
        ArrayList<City> citiesInState = cities.get(state.name);
        City city = citiesInState.get(citiesSpinner.getSelectedItemPosition());
        new FetchForecastTask(MeteoappActivity.this, getSelectedTypes(), cache).execute(city);
      } else {
        findViewById(R.id.buttonShowMeteo).setEnabled(false);
      }
    }
  }
  
  protected ArrayList<String> getSelectedTypes() {
    
    ArrayList<String> types = new ArrayList<String>();
    if (((CheckBox)findViewById(R.id.checkBoxTemperature)).isChecked()) {
      types.add(Forecast.TEMPERATURE);
    }
    if (((CheckBox)findViewById(R.id.checkBoxRain)).isChecked()) {
      types.add(Forecast.RAIN);
    }
    if (((CheckBox)findViewById(R.id.checkBoxPressure)).isChecked()) {
      types.add(Forecast.PRESSURE);
    }
    if (((CheckBox)findViewById(R.id.checkBoxWind)).isChecked()) {
      types.add(Forecast.WIND);
    }
    if (((CheckBox)findViewById(R.id.checkBoxVisibility)).isChecked()) {
      types.add(Forecast.VISIBILITY);
    }
    if (((CheckBox)findViewById(R.id.checkBoxClouds)).isChecked()) {
      types.add(Forecast.CLOUDS);
    }
    
    return types;
  }
  
  protected void setSelectedTypes(ArrayList<String> types) {
    
    if (types.contains(Forecast.TEMPERATURE)) {
      ((CheckBox)findViewById(R.id.checkBoxTemperature)).setChecked(true);
    }
    if (types.contains(Forecast.RAIN)) {
      ((CheckBox)findViewById(R.id.checkBoxRain)).setChecked(true);
    }
    if (types.contains(Forecast.PRESSURE)) {
      ((CheckBox)findViewById(R.id.checkBoxPressure)).setChecked(true);
    }
    if (types.contains(Forecast.WIND)) {
      ((CheckBox)findViewById(R.id.checkBoxWind)).setChecked(true);
    }
    if (types.contains(Forecast.VISIBILITY)) {
      ((CheckBox)findViewById(R.id.checkBoxVisibility)).setChecked(true);
    }
    if (types.contains(Forecast.CLOUDS)) {
      ((CheckBox)findViewById(R.id.checkBoxClouds)).setChecked(true);
    }
  }
  
  private class FetchCitiesTask extends AsyncTask<State, Void, ArrayList<City>> {

    protected ProgressDialog progressDialog;
    protected FetcherException exception;
    protected ChoosenForecast choosenForecast;
    
    public FetchCitiesTask(ChoosenForecast choosenForecast) {
      
      this.choosenForecast = choosenForecast;
    }
    
    @Override
    protected ArrayList<City> doInBackground(State... states) {

      State state = states[0];
      try {
        if (!cities.containsKey(state.name)) {
          CityFetcher fetcher = new CityFetcher(state, new HttpClient());
          cities.put(state.name, fetcher.fetch());
          cache.storeObjectInCache("cities", cities);
        }
        return cities.get(state.name);
      } catch (FetcherException e) {
        System.out.println("Exception: " + e.getMessage());
        exception = e;
      }
      return null;
    }
    
    protected void onPreExecute() {

      super.onPreExecute();
      progressDialog = new ProgressDialog(MeteoappActivity.this);
      progressDialog.setTitle("Pobieram");
      progressDialog.setMessage("Prosz? czeka?, pobieranie listy miast");
      progressDialog.show();
    }
    
    protected void onPostExecute(ArrayList<City> cities) {

      if (exception == null) {
            ArrayList<String> items = new ArrayList<String>();
            for (City city : cities) {
          items.add(city.name);
        }
            Spinner citiesSpinner = (Spinner)findViewById(R.id.city);
            ArrayAdapter<String> adapter = new ArrayAdapter<String>(MeteoappActivity.this,
                android.R.layout.simple_spinner_item, items);
            citiesSpinner.setAdapter(adapter);
            ((Spinner)findViewById(R.id.city)).setEnabled(true);
            setButtonEnabledIfAllCriteriaSatisfied(false);
            
            if (choosenForecast != null && choosenForecast.forecast.city.state.symbol.equals(cities.get(0).state.symbol)) {
            citiesSpinner.setSelection(items.indexOf(choosenForecast.forecast.city.name));
            }
      } else {
        new ExceptionHandler(MeteoappActivity.this, exception).handle();
      }
          progressDialog.dismiss();
    }
  }
}

Java Source Code List

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