Using Internet data in Android applications

"Android applications often must access data that resides on the Internet, and Internet data can be structured in several different formats. In this article, you'll see how to work with three data formats within Android applications:

"First you'll develop a Web service that converts CSV data into XML, JSON, and protocol-buffers formats. Then you'll build a sample Android application that can pull the data from the Web service in any of these formats and parse it for display to the user.

"To perform the exercise in this article, you need the latest Android SDK (see Resources) and the Android 2.2 platform. The SDK requires that you also have a Java™ Development Kit (JDK) installed; I used JDK 1.6.0_17 for this article. You don't need a physical Android device; all of the code will run on the SDK's Android emulator. This article doesn't try to teach you Android development per se, so familiarity with Android programming is recommended. However, you can probably follow along just with knowledge of the Java programming language."

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