WidgetPinning.kt

 fun requestWidgetPinning(context: Context) {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            val appWidgetManager = AppWidgetManager.getInstance(context)
            val componentName = ComponentName(context, YourAppWidget::class.java)

            if (appWidgetManager.isRequestPinAppWidgetSupported) {
                val pinnedWidgetCallbackIntent = Intent(context, YourAppWidget::class.java)
                val successCallback = PendingIntent.getBroadcast(
                    context, 0,
                    pinnedWidgetCallbackIntent, 0
                )
                appWidgetManager.requestPinAppWidget(componentName, Bundle(), successCallback)
            }
        }
    }