import android.content.Intent;
import android.content.SharedPreferences;
+import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.support.v4.app.Fragment;
+import android.support.v4.app.LoaderManager;
+import android.support.v4.content.CursorLoader;
+import android.support.v4.content.Loader;
+import android.support.v4.widget.SimpleCursorAdapter;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
-import android.widget.ArrayAdapter;
import android.widget.ListView;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
-import java.util.ArrayList;
+import java.util.Date;
+
+import uk.me.njae.sunshine.data.WeatherContract;
+import uk.me.njae.sunshine.data.WeatherContract.LocationEntry;
+import uk.me.njae.sunshine.data.WeatherContract.WeatherEntry;
/**
* A placeholder fragment containing a simple view.
*/
-public class ForecastFragment extends Fragment {
+public class ForecastFragment extends Fragment implements LoaderManager.LoaderCallbacks<Cursor> {
private final String LOG_TAG = ForecastFragment.class.getSimpleName();
- private ArrayAdapter<String> mForecastAdapter;
+ private SimpleCursorAdapter mForecastAdapter;
+
+ private static final int FORECAST_LOADER = 0;
+ private String mLocation;
+
+ // For the forecast view we're showing only a small subset of the stored data.
+ // Specify the columns we need.
+ private static final String[] FORECAST_COLUMNS = {
+ // In this case the id needs to be fully qualified with a table name, since
+ // the content provider joins the location & weather tables in the background
+ // (both have an _id column)
+ // On the one hand, that's annoying. On the other, you can search the weather table
+ // using the location set by the user, which is only in the Location table.
+ // So the convenience is worth it.
+ WeatherEntry.TABLE_NAME + "." + WeatherEntry._ID,
+ WeatherEntry.COLUMN_DATETEXT,
+ WeatherEntry.COLUMN_SHORT_DESC,
+ WeatherEntry.COLUMN_MAX_TEMP,
+ WeatherEntry.COLUMN_MIN_TEMP,
+ LocationEntry.COLUMN_LOCATION_SETTING
+ };
+
+ // These indices are tied to FORECAST_COLUMNS. If FORECAST_COLUMNS changes, these
+ // must change.
+ 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_LOCATION_SETTING = 5;
public ForecastFragment() {
}
return super.onOptionsItemSelected(item);
}
+ @Override
+ public void onActivityCreated(Bundle savedInstanceState) {
+ getLoaderManager().initLoader(FORECAST_LOADER, null, this);
+ super.onActivityCreated(savedInstanceState);
+ }
+
private void updateWeather() {
String location = Utility.getPreferredLocation(getActivity());
- new FetchWeatherTask(getActivity(), mForecastAdapter).execute(location);
+ new FetchWeatherTask(getActivity()).execute(location);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
-
- mForecastAdapter = new ArrayAdapter<String>(
+ // The SimpleCursorAdapter will take data from the database through the
+ // Loader and use it to populate the ListView it's attached to.
+ mForecastAdapter = new SimpleCursorAdapter(
getActivity(),
R.layout.list_item_forecast,
- R.id.list_item_forecast_textview,
- new ArrayList<String>() // weekForecast
+ null,
+ // the column names to use to fill the textviews
+ new String[]{WeatherContract.WeatherEntry.COLUMN_DATETEXT,
+ WeatherContract.WeatherEntry.COLUMN_SHORT_DESC,
+ WeatherContract.WeatherEntry.COLUMN_MAX_TEMP,
+ WeatherContract.WeatherEntry.COLUMN_MIN_TEMP
+ },
+ // the textviews to fill with the data pulled from the columns above
+ new int[]{R.id.list_item_date_textview,
+ R.id.list_item_forecast_textview,
+ R.id.list_item_high_textview,
+ R.id.list_item_low_textview
+ },
+ 0
);
View rootView = inflater.inflate(R.layout.fragment_main, container, false);
@Override
public void onItemClick(AdapterView<?> adapterView, View view, int position, long l) {
- String forecast = mForecastAdapter.getItem(position);
+ // String forecast = mForecastAdapter.getItem(position);
Intent intent = new Intent(getActivity(), DetailActivity.class)
- .putExtra(Intent.EXTRA_TEXT, forecast);
+ .putExtra(Intent.EXTRA_TEXT, "placeholder");
startActivity(intent);
}
});
updateWeather();
}
+ @Override
+ public Loader<Cursor> onCreateLoader(int id, Bundle args) {
+ // This is called when a new Loader needs to be created. This
+ // fragment only uses one loader, so we don't care about checking the id.
+
+ // To only show current and future dates, get the String representation for today,
+ // and filter the query to return weather only for dates after or including today.
+ // Only return data after today.
+ 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> loader, Cursor data) {
+ mForecastAdapter.swapCursor(data);
+ }
+ @Override
+ public void onLoaderReset(Loader<Cursor> loader) {
+ mForecastAdapter.swapCursor(null);
+ }
}
projects / Sunshine.git / blobdiff