Android Programming: The Big Nerd Ranch Guide, 2nd Edition

Networking Basics

You are going to have one class handle the networking in PhotoGallery. Create a new Java class and, since you will be connecting to Flickr, name this class FlickrFetchr.

FlickrFetchr will start off small with only two methods: getUrlBytes(String) and getUrlString(String). The getUrlBytes(String) method fetches raw data from a URL and returns it as an array of bytes. The getUrlString(String) method converts the result from getUrlBytes(String) to a String.

In FlickrFetchr.java, add implementations for getUrlBytes(String) and getUrlString(String) (Listing 23.3).

Listing 23.3  Basic networking code (FlickrFetchr.java)

p​u​b​l​i​c​ ​c​l​a​s​s​ ​F​l​i​c​k​r​F​e​t​c​h​r​ ​{​
 ​ ​ ​ ​p​u​b​l​i​c​ ​b​y​t​e​[​]​ ​g​e​t​U​r​l​B​y​t​e​s​(​S​t​r​i​n​g​ ...