import { fromObject } from "tns-core-modules/data/observable"; export function loaded(args) { var items = []; for (let i = 0; i < 100; i++) { items.push(fromObject({ text: "<" + i + ">", selected: !!!(i % 5) })); } args.object.bindingContext = { items: items }; } export function toggle(args) { console.log("toggle : "); let context = args.object.bindingContext; console.dir(context); context.set("selected", !context.selected); // args.object.requestLayout(); }