import { EventData } from 'tns-core-modules/data/observable'; import { Page } from 'tns-core-modules/ui/page'; import { Button } from "tns-core-modules/ui/button"; import { Label } from "tns-core-modules/ui/label"; import { StackLayout } from "tns-core-modules/ui/layouts/stack-layout"; import { GridLayout } from "tns-core-modules/ui/layouts/grid-layout"; export function toggle(args: EventData) { const page = ((args.object).page); const getElementById = id => { return page.getViewById(id); } const toggleBtn =