AppWidgetProvider for configurable widget, onUpdate example

WidgetProvider.java - onUpdate

@Override
public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
    WidgetEntryDao dao = new WidgetEntryDao(new DbHelper(context));

    final int N = appWidgetIds.length;

    // Perform this loop procedure for each App Widget that belongs to this provider
    for (int i = 0; i < N; i++) {
        int appWidgetId = appWidgetIds[i];

        // Finding the widget entry for the app widget id
        WidgetEntry entry = dao.findByWidgetId(appWidgetId);

        if (entry != null) {

            // creating the intent with all the information we want to pre-fill
            Intent intent = new Intent(Intent.ACTION_SEND);
            // array of destination email addresses
            intent.putExtra(Intent.EXTRA_EMAIL, entry.getTo());
            // subject (optional)
            intent.putExtra(Intent.EXTRA_SUBJECT, entry.getSubjectPrefix());
            // little bonus, we're adding some kind of signature after the (optional) message
            intent.putExtra(Intent.EXTRA_TEXT, entry.getMessagePrefix() + "\n\n\n" + context.getString(R.string.signature));
            // and setting a type that will narrow the choice of apps that handle email related stuff
            intent.setType("message/rfc822");

            // creating pending intent, the flag is REALLY importat, and so is the appWidgetId
            PendingIntent pendingIntent = PendingIntent.getActivity(context, appWidgetId, intent, PendingIntent.FLAG_UPDATE_CURRENT);

            RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.widget_layout);
            // using main layout to handle the click, so the whole widget is a button
            views.setOnClickPendingIntent(R.id.layoutWidget, pendingIntent);
            // setting the label
            views.setTextViewText(R.id.textLabel, entry.getLabel());

            // updating the widget because
            appWidgetManager.updateAppWidget(appWidgetId, views);
        }
    }
}