By Frank Ableson, Robi Sen, Chris King, Enrique Ortiz
Android in motion, 3rd version takes you some distance past "Hello Android." you will grasp the SDK, construct WebKit apps utilizing HTML five, or even discover ways to expand or exchange Android's integrated positive factors. you will discover fascinating examples on each web page as you discover cross-platform photos with RenderScript, the up to date notification approach, and the local improvement package. This e-book additionally introduces vital capsule suggestions like drag-and-drop, fragments, and the motion Bar, all new in Android three.
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Extra resources for Android in Action, 3rd Edition
Chapter 2 goes into more detail on setting up and using the development tools. The code examples in this chapter are primarily for illustrative purposes. We reference and introduce classes without necessarily naming specific Java packages. Subsequent chapters take a more rigorous approach to introducing Android-specific packages and classes. NOTE Next, we’ll look at the foundational information about why Intents are important, and then we’ll describe how Intents work. Beyond the introduction of the Intent, the remainder of this chapter describes the major elements of Android application development, leading up to and including the first complete Android application that you’ll develop.
It’s nice to have this option for troubleshooting application issues. It’s a relatively recent phenomenon to be able to touch the metal of a mobile phone in this way. For more in-depth exploration of the Linux foundations of Android, see chapter 13. Let’s apply some of what you’ve learned by building your first Android application. 8 Creating an Android application Let’s look at a simple Android application consisting of a single Activity, with one View. The Activity collects data (a street address) and creates an Intent to find this address.
We’re going to examine the requested action and, generically, the data that accompanies the requested action. An IntentFilter is a declaration of capability and interest in offering assistance to those in need. It can be generic or specific with respect to which Intents it offers to service. The action attribute of an Intent is typically a verb: for example VIEW, PICK, or EDIT. A number of built-in Intent actions are defined as members of the Intent class, but application developers can create new actions as well.
Android in Action, 3rd Edition by Frank Ableson, Robi Sen, Chris King, Enrique Ortiz