In the last part of my Custom UI Tutorial, commenter Knut asked: Is there an easy way to declare the listener in XML (similar to the android:onClick=”onMyButtonClick” in the stock controls)? This is a great question, and in answering his question, I’ll go ahead and show you how to create other custom attributes you can [...]
I recently was doing some investigation into doing image blending in android, and came across the quite powerful built-in capabilities of Paint. I was wondering if it was possible to combine several grayscale images into a color image, using the grayscale images as the color channels. If you are familiar with Photoshop or other graphics-editing [...]
[This is the third part of the tutortial so far. If you haven't already, check out Part 1 and Part 2 to get up to speed on where we are. You can also grab the source code we ended up with at the end of Part 2 to follow along.]
[This is the second part in a three-part tutorial for creating an odometer widget in android. If you haven't already, check out Part 1 to get up to speed on where we are. You can also grab the source code we ended up with at the end of Part 1 to follow along.]
Introduction This series of tutorials will provide an introduction to creating custom user interface elements in Android. By the end, you will have a complete custom widget that will allow input of numbers as if on an odometer. The user will slide the digits up and down, and change the digits. This first part of [...]
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