import { CoreTypes } from '@nativescript/core'; import * as pageModule from '@nativescript/core/ui/page'; import * as model from './myview'; export function onLoaded(args: { eventName: string; object: any }) { var page = args.object; page.bindingContext = new model.ViewModel(); } export function onOrientation(args: { eventName: string; object: any }) { var layout = args.object.parent; if (layout.orientation === CoreTypes.Orientation.vertical) { layout.orientation = CoreTypes.Orientation.horizontal; } else { layout.orientation = CoreTypes.Orientation.vertical; } }