Android Open Source - WineDB Wine List Fragment

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License

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

package com.selesse.android.winedb.activity;
/*from w w  w.  ja v  a 2 s. co  m*/
import android.content.Intent;
import android.database.Cursor;
import android.os.Bundle;
import android.support.v4.app.ListFragment;
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.support.v4.widget.SimpleCursorAdapter.ViewBinder;
import android.util.Log;
import android.view.View;
import android.widget.ListView;
import android.widget.RatingBar;
import android.widget.TextView;
import com.selesse.android.winedb.R;
import com.selesse.android.winedb.contentprovider.WineContentProvider;
import com.selesse.android.winedb.database.Wine;
import com.selesse.android.winedb.database.WineDatabaseHandler;
import com.selesse.android.winedb.model.SortOrder;
import com.selesse.android.winedb.model.WineColor;

public class WineListFragment extends ListFragment implements LoaderManager
        .LoaderCallbacks<Cursor> {
    public static final String TAG = WineListFragment.class.getSimpleName();
    private Cursor cursor = null;
    private SimpleCursorAdapter adapter;

    private static final String[] PROJECTION = new String[] {
            Wine.COLUMN_ID,
            Wine.COLUMN_NAME,
            Wine.COLUMN_COLOR };
    private static final int LOADER_ID = 0;

    @Override
    public void onActivityCreated(Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);

        setEmptyText(getText(R.string.empty));

        String[] from = {
                Wine.COLUMN_NAME,
                Wine.COLUMN_COUNTRY,
                Wine.COLUMN_COLOR,
                Wine.COLUMN_RATING,
                Wine.COLUMN_YEAR };
        int[] to = { R.id.name, R.id.country, R.id.wine_color, R.id.rating, R.id.year };

        adapter = new SimpleCursorAdapter(getActivity(), R.layout.rows, cursor, from, to, 0);
        adapter.setViewBinder(new ViewBinder() {

            @Override
            public boolean setViewValue(View view, Cursor cursor, int columnIndex) {
                if (view.getId() == R.id.rating) {
                    RatingBar ratingBar = (RatingBar) view;
                    ratingBar.setRating(cursor.getInt(columnIndex) / 2.0f);
                    return true;
                }
                // Some columns (i.e. year) may have -1 as a default DB value - don't show these
                else if (Wine.isNumericColumn(columnIndex)) {
                    if (cursor.getInt(columnIndex) == -1) {
                        TextView textView = (TextView) view;
                        textView.setText("");
                        return true;
                    }
                } else if (Wine.isColor(columnIndex)) {
                    TextView textView = (TextView) view;
                    textView.setText(WineColor.getLocalizedString(getActivity().getApplicationContext()
                            .getResources(), cursor.getString(columnIndex)));
                    return true;
                }
                return false;
            }

        });

        setListAdapter(adapter);

        LoaderManager.LoaderCallbacks<Cursor> callBacks = this;
        LoaderManager loaderManager = getActivity().getSupportLoaderManager();
        loaderManager.initLoader(LOADER_ID, null, callBacks);
    }

    public void sortBy(String option) {
        WineDatabaseHandler db = WineDatabaseHandler.getInstance(getActivity());
        adapter.changeCursor(db.sortBy(option, SortOrder.DESCENDING));
    }

    @Override
    public void onListItemClick(ListView l, View v, int position, long id) {
        super.onListItemClick(l, v, position, id);

        Log.i(TAG, String.format("We clicked list item, pos (%d) with id (%d)", position, id));
        Intent intent = new Intent(getActivity(), SingleWineViewActivity.class);
        intent.putExtra("position", position);
        startActivity(intent);
    }

    @Override
    public Loader<Cursor> onCreateLoader(int id, Bundle args) {
        return new CursorLoader(getActivity(), WineContentProvider.CONTENT_URI, PROJECTION, null, null,
                null);
    }

    @Override
    public void onLoadFinished(Loader<Cursor> loader, Cursor cursor) {
        switch (loader.getId()) {
            case LOADER_ID:
                adapter.swapCursor(cursor);
                break;
        }
    }

    @Override
    public void onLoaderReset(Loader<Cursor> arg0) {
        adapter.swapCursor(null);
    }
}
Java Source Code List
