Android Open Source - SunshineApp Forecast Fragment

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Back to project page SunshineApp.
License

The source code is released under:
Apache License
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Java Source Code

package sunshine.ferdyrodriguez.com.sunshine;
/*from  w  ww  .java2s  . c  o  m*/
import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.LoaderManager.LoaderCallbacks;
import android.support.v4.content.CursorLoader;
import android.support.v4.content.Loader;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ListView;
import android.widget.TextView;

import java.util.Date;

import sunshine.ferdyrodriguez.com.sunshine.data.WeatherContract;
import sunshine.ferdyrodriguez.com.sunshine.data.WeatherContract.WeatherEntry;



/**
 * A simple {@link Fragment} subclass.
 * Activities that contain this fragment must implement the
 * {@link 'ForecastFragment. OnFragmentInteractionListener} interface
 * to handle interaction events.
 * Use the {@link ForecastFragment # newInstance} factory method to
 * create an instance of this fragment.
 *
 */
public class ForecastFragment extends Fragment implements LoaderCallbacks<Cursor> {

    private String mLocation;
    private static final int FORECAST_LOADER = 0;

    public static final String[] FORECAST_COLUMNS = {
            WeatherContract.WeatherEntry.TABLE_NAME + "." + WeatherContract.WeatherEntry._ID,
            WeatherContract.WeatherEntry.COLUMN_DATETEXT,
            WeatherContract.WeatherEntry.COLUMN_SHORT_DESC,
            WeatherContract.WeatherEntry.COLUMN_MAX_TEMP,
            WeatherContract.WeatherEntry.COLUMN_MIN_TEMP,
            WeatherContract.LocationEntry.COLUMN_LOC_SETTING,
            WeatherContract.WeatherEntry.COLUMN_WEATHER_ID
    };

    public static final int COL_WEATHER_ID = 0;
    public static final int COL_WEATHER_DATE = 1;
    public static final int COL_WEATHER_DESC = 2;
    public static final int COL_WEATHER_MAX_TEMP = 3;
    public static final int COL_WEATHER_MIN_TEMP = 4;
    public static final int COL_LOC_SETTING = 5;
    public static final int COL_WEATHER_CONDITION_ID = 6;

    private ForecastAdapter mForecastAdapter;

    public ForecastFragment(){

    }

    @Override
    public void onActivityCreated(Bundle savedInstanceState) {
        getLoaderManager().initLoader(FORECAST_LOADER, null, this);
        super.onActivityCreated(savedInstanceState);
    }

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

    @Override
    public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
        inflater.inflate(R.menu.forecastfragment, menu);
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {

        int id = item.getItemId();
        if (id == R.id.action_refresh){
            updateWeather();
            return true;
        }
        return super.onOptionsItemSelected(item);
    }


    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        mForecastAdapter = new ForecastAdapter(getActivity(), null, 0);

        View rootView = inflater.inflate(R.layout.fragment_main, container, false);
        ListView listView = (ListView)rootView.findViewById(R.id.listview_forecast);
        listView.setAdapter(mForecastAdapter);
        listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {

            @Override
            public void onItemClick(AdapterView<?> adapterView, View view, int position, long l) {
                Cursor cursor = mForecastAdapter.getCursor();
                if (cursor != null && cursor.moveToPosition(position)) {
                    Intent intent = new Intent(getActivity(), DetailActivity.class)
                            .putExtra(DetailActivity.DATE_KEY, cursor.getString(COL_WEATHER_DATE));
                    startActivity(intent);
                }
            }
        });

        return rootView;
    }

    @Override
    public void onResume() {
        super.onResume();
        if (mLocation != null && !mLocation.equals(Utility.getPreferredLocation(getActivity()))) {
            getLoaderManager().restartLoader(FORECAST_LOADER, null, this);
        }
    }

    @Override
    public void onStart() {
        super.onStart();
    }

    private void updateWeather() {
        String location = Utility.getPreferredLocation(getActivity());
        new FetchWeatherTask(getActivity()).execute(location);
    }

    @Override
    public Loader<Cursor> onCreateLoader(int i, Bundle bundle) {
        String startDate = WeatherContract.getDbDateString(new Date());

        // Sort order:  Ascending, by date.
        String sortOrder = WeatherEntry.COLUMN_DATETEXT + " ASC";

        mLocation = Utility.getPreferredLocation(getActivity());
        Uri weatherForLocationUri = WeatherEntry.buildWeatherLocationWithStartDate(
                mLocation, startDate);

        // Now create and return a CursorLoader that will take care of
        // creating a Cursor for the data being displayed.
        return new CursorLoader(
                getActivity(),
                weatherForLocationUri,
                FORECAST_COLUMNS,
                null,
                null,
                sortOrder
        );
    }

    @Override
    public void onLoadFinished(Loader<Cursor> cursorLoader, Cursor data) {
        mForecastAdapter.swapCursor(data);
    }

    @Override
    public void onLoaderReset(Loader<Cursor> cursorLoader) {
        mForecastAdapter.swapCursor(null);
    }
}
Java Source Code List
