ListViewAppWidgetProvider.kt

class ListViewAppWidgetProvider : HomeWidgetProvider() {
    override fun onUpdate(
        context: Context,
        appWidgetManager: AppWidgetManager,
        appWidgetIds: IntArray,
        widgetData: SharedPreferences
    ) {
      // Attempts to get the data from shared preferences
        val data = HomeWidgetPlugin.getData(context).getString("NEWS_ARTICLES_DATA","")
        appWidgetIds.forEach { id ->
            var views: RemoteViews?
            if(data!!.isNotEmpty()) {
                views = createListView(context, id, data)
            } else {
                views = RemoteViews(context.packageName,R.layout.listview_widget_loader)
                // initiate work request if no data is found
                initiateWorkRequest(context, id)
            }

            appWidgetManager.updateAppWidget(id, views)
        }
    }

    private fun initiateWorkRequest(context: Context, id: Int) {
        val workRequest: WorkRequest = OneTimeWorkRequest.Builder(UpdateWidgetWorker::class.java).setInputData(
            Data.Builder().putInt("widgetId", id).build()
        ).build()
        WorkManager.getInstance(context).enqueue(workRequest)
    }
}