NativeScript/tests/app/pages/page17.ts

import * as observable from "tns-core-modules/data/observable";
import * as action from "tns-core-modules/ui/action-bar";

import * as pages from "tns-core-modules/ui/page";

var currentPage: pages.Page;
// Event handler for Page "loaded" event attached in main-page.xml
export function pageLoaded(args: observable.EventData) {
    // Get the event sender
    var page = <pages.Page>args.object;
    currentPage = page;
    var textItem = new action.ActionItem();
    textItem.text = "from loaded";
    textItem.on("tap", () => {
        console.log("item added in page.loaded tapped!!!");
    });
    page.actionBar.actionItems.addItem(textItem);
}

export function optionTap(args) {
    console.log("item added form XML tapped!!!");
}
var i = 0;
export function buttonTap(args: observable.EventData) {
    currentPage.actionBar.title = "hi " + i++;

    if (currentPage.actionBar.android) {
        if (i % 3 === 0) {
            currentPage.actionBar.android.icon = "res://ic_test";
        }
        else if (i % 3 === 1) {
            currentPage.actionBar.android.icon = "~/assets/test-icon.png";
        }
        else if (i % 3 === 2) {
            currentPage.actionBar.android.icon = undefined;
        }
    }
}