This chapter will walk us through the steps needed to create a Business App that converts a value from one currency to a list of other currencies. In order to do the conversion, our App will need to download a list of currency conversion rates from the Internet.
In this chapter, we shall learn the following:
What is an XML file?
Downloading an XML file from the Internet
Parsing an XML file to extract the information that we need
Using a background thread so that we don't tie up the main user interface
Managing a pop-up menu
Managing a table view
Performing arithmetic operations using an array of values