Create widget for Locked screen in android

hi i am new in android developing. i am trying to creating a widget for locked screen but i am unable to do this. please help!!!! here i9s my code

    public class ExampleAppWidgetProvider extends AppWidgetProvider{

       @Override
       public void onUpdate(Context context, AppWidgetManager appWidgetManager,
       int[] appWidgetIds) {
          for(int i=0; i<appWidgetIds.length; i++){
          int currentWidgetId = appWidgetIds[i];
          String url = "http://www.dndinfoways.com";
          Intent intent = new Intent(Intent.ACTION_VIEW);
          intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
          intent.setData(Uri.parse(url));
          PendingIntent pending = PendingIntent.getActivity(context, 0,
          intent, 0);
          RemoteViews views = new RemoteViews(context.getPackageName(),
          R.layout.widgets);
          views.setOnClickPendingIntent(R.id.button1, pending);
          appWidgetManager.updateAppWidget(currentWidgetId,views);
          Toast.makeText(context, "widget added", Toast.LENGTH_SHORT).show();   
          }
       }    
    }