fixed demo

.gitignore

@@ -5,9 +5,9 @@
 demo/app/*.js
 !demo/karma.conf.js
 !demo/app/tests/*.js
-demo/*.d.ts
 !demo/references.d.ts
 demo/lib
 demo/platforms
 demo/node_modules
+demo/hooks
 node_modules

demo/app/app.ts

@@ -0,0 +1,2 @@
+import * as application from 'application';
+application.start({ moduleName: "main-page" });

demo/app/main-page.ts

@@ -0,0 +1,16 @@
+import * as observable from 'data/observable';
+import * as pages from 'ui/page';
+import {HelloWorldModel} from './main-view-model';
+import { EventData } from 'data/observable';
+import { Page } from 'ui/page';
+import { isAndroid, device } from "platform";
+import { Color } from "color";
+import { android } from "application";
+// Event handler for Page 'loaded' event attached in main-page.xml
+export function pageLoaded(args: observable.EventData) {
+    // Get the event sender
+    let page = <pages.Page>args.object;
+    page.bindingContext = new HelloWorldModel(page);
+
+}
+

demo/app/main-view-model.ts

@@ -0,0 +1,21 @@
+import {Observable} from 'data/observable';
+import {AndroidIosSwitch} from 'nativescript-android-iosswitch';
+import { Page } from 'ui/page';
+export class HelloWorldModel extends Observable {
+
+  public message: string;
+  private npb: AndroidIosSwitch;
+  constructor(mainPage: Page) {
+    super();
+    // this.npb = new NumberProgressBar();
+    this.npb = <AndroidIosSwitch>mainPage.getViewById('sb');
+
+  }
+     public onTrue() {
+        this.npb.toggleSwitch(true);
+    }
+  public onFalse() {
+        this.npb.setChecked(false);
+    }
+}
+