CheckItemsWidgetConfig.java

package org.openintents.shopping.widgets;

import android.app.ListActivity;
import android.appwidget.AppWidgetManager;
import android.appwidget.AppWidgetProviderInfo;
import android.content.ComponentName;
import android.content.Intent;
import android.content.SharedPreferences;
import android.database.Cursor;
import android.os.Bundle;
import android.view.View;
import android.widget.ListView;
import android.widget.SimpleCursorAdapter;

import java.util.List;

import org.openintents.shopping.R;
import org.openintents.shopping.library.provider.ShoppingContract;
import org.openintents.shopping.library.provider.ShoppingContract.Lists;
import org.openintents.shopping.ui.PreferenceActivity;

public class CheckItemsWidgetConfig extends ListActivity {
    private final static String PREFS = "check_items_widget";
    private int mAppWidgetId = AppWidgetManager.INVALID_APPWIDGET_ID;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setResult(RESULT_CANCELED);

        Cursor cursor = managedQuery(ShoppingContract.Lists.CONTENT_URI,
                new String[]{Lists._ID, Lists.NAME}, null, null,
                PreferenceActivity.getShoppingListSortOrderFromPrefs(this));
        setListAdapter(new SimpleCursorAdapter(this,
                android.R.layout.simple_list_item_1, cursor,
                new String[]{Lists.NAME}, new int[]{android.R.id.text1}));

        Bundle extras = getIntent().getExtras();
        if (extras != null) {
            mAppWidgetId = extras.getInt(AppWidgetManager.EXTRA_APPWIDGET_ID,
                    AppWidgetManager.INVALID_APPWIDGET_ID);
        }
        if (mAppWidgetId == AppWidgetManager.INVALID_APPWIDGET_ID) {
            finish();
        }

        setTitle(R.string.widget_choose_a_list);
    }

    @Override
    protected void onListItemClick(ListView l, View v, int position, long id) {
        SharedPreferences sharedPreferences = getSharedPreferences(PREFS, 0);
        SharedPreferences.Editor sharedPreferencesEditor = sharedPreferences
                .edit();
        sharedPreferencesEditor.putLong(String.valueOf(mAppWidgetId), id);
        sharedPreferencesEditor.commit();

        Intent resultValue = new Intent();
        resultValue.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, mAppWidgetId);
        setResult(RESULT_OK, resultValue);

        updateWidgets();

        finish();
    }

    private void updateWidgets() {
        AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(this);
        int[] a = appWidgetManager.getAppWidgetIds(new ComponentName(
                getPackageName(), CheckItemsWidget.class.getName()));
        List<AppWidgetProviderInfo> b = appWidgetManager
                .getInstalledProviders();
        for (AppWidgetProviderInfo i : b) {
            if (i.provider.getPackageName().equals(getPackageName())) {
                a = appWidgetManager.getAppWidgetIds(i.provider);
                new CheckItemsWidget().onUpdate(this, appWidgetManager, a);
            }
        }
    }

}