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Bill Osuch - Random geek notes Android There are 9 entries for the tag Android
Android–Finding your SDK debug certificate MD5 fingerprint using Keytool
I recently upgraded to a new development machine, which means the certificate used to sign my applications during debug changed. Under most circumstances you’ll never notice a difference, but if you’re developing apps using Google’s Maps API you’ll find that your old API key no longer works with the new certificate fingerprint. Google's instructions walk you through retrieving the MD5 fingerprint of your SDK debug certificate - the certificate that you’re probably signing your apps with before publishing, ......

Posted On Thursday, October 18, 2012 9:18 AM

Review–Build Android and iOS apps in Visual Studio with Nomad
Nomad is a Visual Studio extension that allows you build apps for both Android and iOS platforms in Visual Studio using HTML5. There is no need to switch between .Net, Java and Objective-C to target different platforms - write your code once in HTML5 and build for all common mobile platforms and tablets. You have access to the native hardware functions (such as camera and GPS) through the PhoneGap library, UI libraries such as jQuery mobile allow you to create an impressive UI with minimal work. ......

Posted On Friday, June 1, 2012 12:32 PM

Android–Setting up a Kindle Fire emulator
Developing for the Kindle Fire is pretty much the same as developing for any other Android device (aside from Amazon’s long review process…). Amazon’s developer FAQ lists most everything you need to know, but I’ve stolen summarized it here: Will my app work on Kindle Fire? For your app to work on Kindle Fire, it needs to be compatible with the device's specifications. At a high level, it must be optimized for non-Google Mobile Services (GMS) Android 2.3.4 (Gingerbread) and a 7" screen with a resolution ......

Posted On Tuesday, March 13, 2012 2:08 PM

Android tutorial–Adding images to your custom multi-line ListView
In a previous post I showed how to create a custom Android ListView that was bound to an ArrayList. I've had a few people ask how to include images in the ListView, so here it is. We’ll do this by adding an ImageView to the repeating layout (each row of data) and populating it at the same time the name and other information are populated. First, start with a working version of the previous tutorial. You can download the full Eclipse file here: The first thing we're going to do ......

Posted On Friday, February 24, 2012 3:45 PM

Book Review: Kindle Fire: Out Of The Box (O’Reilly)
The Kindle Fire, like a lot of devices these days, does not come with a user manual. Kindle Fire: Out Of The Box covers the basics of setting up and using your Fire. This 76-page book is divided into 6 chapters: Get to Know Your Kindle Fire Set Up Your Fire Books, Newsstand, and Docs Music and Video Apps Web and Email The book is loaded with detailed, annotated screen shots, which makes it easy to figure out exactly what you should be seeing on your Kindle's screen. However, this comes at a price ......

Posted On Tuesday, February 21, 2012 12:15 PM

Android–Create a ListView with rounded corners
In a previous post I showed how to create a custom multi-line ListView bound to an ArrayList. Let’s make it a little more visually appealing and give each item some rounded corners. If you followed the previous how-to you wound up with something that looked like this: To put each ListView item (name, address & phone) into its own rounded-corner box, create a new file in your res/drawable directory called border.xml, and paste in the following code: <shape xmlns:android="http://schem... ......

Posted On Monday, February 6, 2012 4:26 PM

Android - Create a custom multi-line ListView bound to an ArrayList
The Android HelloListView tutorial shows how to bind a ListView to an array of string objects, but you'll probably outgrow that pretty quickly. This post will show you how to bind the ListView to an ArrayList of custom objects, as well as create a multi-line ListView. Let's say you have some sort of search functionality that returns a list of people, along with addresses and phone numbers. We're going to display that data in three formatted lines for each result, and make it clickable. First, create ......

Posted On Monday, January 31, 2011 3:33 PM

Android - passing data between Activities
(To follow along with this, you should understand the basics of starting new activities: Link ) The easiest way to pass data from one activity to another is to create your own custom bundle and pass it to your new class. First, create two new activities called Search and SearchResults (make sure you add the second one you create to the AndroidManifest.xml file!), and create xml layout files for each. Search's file should look like this: <?xml version="1.0" encoding="utf-8"?> <LinearLayout ......

Posted On Monday, January 17, 2011 3:53 PM

Switching between Activities (screens...) in Android
This tutorial will show how to quickly create an Activity, and switch to another Activity using a ListView or a page full of buttons. .Net folks can think of an Activity as a concept similar to a Form in a .Net Windows app. Each Activity you create is a new page in your app. An activity has essentially four states (blatantly stolen from the Android dev guide): If an activity in the foreground of the screen (at the top of the stack), it is active or running. If an activity has lost focus but is still ......

Posted On Wednesday, November 17, 2010 3:07 PM

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