LockWidgetProvider.kt

open class LockWidgetProvider : AppWidgetProvider() {

    override fun onUpdate(context: Context, appWidgetManager: AppWidgetManager, appWidgetIds: IntArray) {
        for (id in appWidgetIds) {
            appWidgetManager.updateAppWidget(id, createLockRemoteViews(context, AppCache.lockState))
        }
    }

    override fun onReceive(context: Context, intent: Intent) {
        super.onReceive(context, intent)

        LockWidgetJobService.handleAction(context, intent.action)
    }

    override fun onEnabled(context: Context) {
        super.onEnabled(context)

        LockWidgetJobService.handleAction(context, ACTION_REFRESH)
    }

    companion object {

        const val ACTION_TOGGLE = "${BuildConfig.APPLICATION_ID}.ACTION_TOGGLE"
        const val ACTION_REFRESH = "${BuildConfig.APPLICATION_ID}.ACTION_REFRESH"

        private fun createPendingIntent(context: Context, action: String): PendingIntent {
            val intent = Intent(context, LockWidgetProvider::class.java)
            intent.action = action
            intent.data = Uri.parse(intent.toUri(Intent.URI_INTENT_SCHEME))

            return PendingIntent.getBroadcast(context, 0, intent,
                    PendingIntent.FLAG_UPDATE_CURRENT)
        }

        ...
    }

}