In my previous post I linked to a terrific website (Working with XML on Android) which describes how you can read and parse XML documents in Android. The code supplied by that website used polymorphism to show 4 different methods for parsing the XML data. I vowed to simplify that and share the new source [...]
One of the most powerful aspects of any mobile application for a 3G phone is that it can connect to the Internet. By connecting to the Internet the application can offer much more value to the user since it becomes an interface for a web-based component, e.g. using Twitter’s API to create a Twitter application [...]
In my quest to create a “Taxman” Android application I ran into the following problem:
I want to ask the user to enter their yearly income, after which the screen will flip and their after-tax income will be displayed in a table format for all Canadian provinces. (And for the future: all US states). The problem [...]
In this post I will show you how to use the touch screen so that you can drag your finger across the screen, and it will switch the screen for you – “iPhone style”!
For this I will be implemented OnTouchListener and overrided the method OnTouch().
To start off, we need to create an Activity with two [...]
In this post I’ll show you how to add animations when trying to switch between screens. Usually when you switch between screens it’s a direct “poof” and the new screen appears in a very un-graceful way. The SDK offers a bunch of easy-to-use animations, and I’ll show you how to use them here.
I tried doing [...]
While developing my Android apps I routinely, regularly, almost every time, without a miss, get some kind of exception. And the error you see on screen is not developer friendly, though it is very end-user friendly:
WTF? Why? What did I do wrong this time, again?
In my great expectations of Google Android coming to Canada on June 2nd, I’ve started experimenting with developing some apps for the Android platform. My first app is called “The Taxman” and will calculate the amount of tax you owe per year in your province/state – well only Canada for now.
I had trouble adjusting to [...]
