Android Open Source - Tacere Event List Widget Provider

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License

The source code is released under:

MIT License

Java Source Code

/*
 * Copyright (c) 2014 Jonathan Nelson//from w ww  . j a v a 2s  .  c o m
 * Released under the BSD license.  For details see the COPYING file.
 */

package org.ciasaboark.tacere.widget;

import android.appwidget.AppWidgetManager;
import android.appwidget.AppWidgetProvider;
import android.content.Context;
import android.content.Intent;
import android.net.Uri;
import android.widget.RemoteViews;

import org.ciasaboark.tacere.R;
import org.ciasaboark.tacere.widget.service.WidgetService;

public class EventListWidgetProvider extends AppWidgetProvider {

    @Override
    public void onUpdate(Context context, AppWidgetManager
            appWidgetManager, int[] appWidgetIds) {

        /*int[] appWidgetIds holds ids of multiple instance
         * of your widget
         * meaning you are placing more than one widgets on
         * your homescreen*/
        final int N = appWidgetIds.length;
        for (int i = 0; i < N; ++i) {
            RemoteViews remoteViews = updateWidgetListView(context,
                    appWidgetIds[i]);
            appWidgetManager.updateAppWidget(appWidgetIds[i],
                    remoteViews);
            updateWidgetListView(context, i);
        }
        super.onUpdate(context, appWidgetManager, appWidgetIds);
    }

    private RemoteViews updateWidgetListView(Context context, int appWidgetId) {

        //which layout to show on widget
        RemoteViews remoteViews = new RemoteViews(
                context.getPackageName(), R.layout.widget_event_list);

        //RemoteViews Service needed to provide adapter for ListView
        Intent svcIntent = new Intent(context, WidgetService.class);
        //passing app widget id to that RemoteViews Service
        svcIntent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId);
        //setting a unique Uri to the intent
        //don't know its purpose to me right now
        svcIntent.setData(Uri.parse(
                svcIntent.toUri(Intent.URI_INTENT_SCHEME)));
        //setting adapter to listview of the widget
        remoteViews.setRemoteAdapter(appWidgetId, R.id.widget_event_listview,
                svcIntent);
        //setting an empty view in case of no data
        remoteViews.setEmptyView(R.id.widget_event_listview, R.id.widget_event_listview);
        return remoteViews;
    }
}

Java Source Code List

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