import { EventData , Observable } from '@nativescript/core/data/observable' ; import { Page } from '@nativescript/core/ui/page' ; export function navigatingTo ( args ) { let page = < Page > args . object ; page . bindingContext = new ImagesTemplateViewModel ( ) ; } export class ImagesTemplateViewModel extends Observable { public items : Array < string > = [ 'res://icon' , null , '~/resources/images/no-image.png' , null , '~/resources/images/no-image.png' , null , 'res://icon' , null ] ; constructor ( ) { super ( ) ; } }