Refining the mobile application for Android

The services of a mobile application developer are required. We need to redesign the Android app. There is a mobile application for Android in Java. When you press a button, it connects to a given site, searches for the necessary information on it and displays a sentence on the screen (what information should be in the code is indicated in advance). Updating, i.e. Another connection and search for the necessary information on the site occurs every 3 minutes. You need to make sure that when there is a new connection to the site and finding boring information on it (i.e. update), a notification appears in the curtain of the phone that will say that the necessary data is downloaded. And, when you click on the notification, there should be a transition to the application with the opening of the main page.

Payment after the work.