Updating the navigation system
So far we have created one root component, three components for the wire-frames, and one component for navigation system. Now it is the right time to take hard coded values out of the root template and replace them with actual routes. We are going to put the Android router module in charge of updating the view based on the selected menu item.
Before changing anything, click on any link in the navigation bar and notice the "loading..." message. The current <a href="#">
in each menu item, refreshes the whole page and completely reloads index.html
every time. This is not ideal. The goal is to update a specific area of the index page with the view of a component associated with the menu item.
Note
Applications that update only a specific part of a screen are called SPA (Single Page Application) and they are very efficient in terms of reducing loading time. All page contents will be loaded and cached once and later requesting any page will be done in the background...