Book Image

Android Development Tools for Eclipse

By : Khirulnizam Abd Rahman, Sanjay Shah
Book Image

Android Development Tools for Eclipse

By: Khirulnizam Abd Rahman, Sanjay Shah

Overview of this book

<p>The increase in Android's popularity with every passing day cannot be understated. This has resulted in a large programmer base willing to contribute to its success. Eclipse has a powerful IDE and has been adopted widely by programmers across the globe. The focus of ADT is to use existing familiar territory and ease development of Android applications. In this sense, ADT provides a one stop solution for Android application development.</p><p>Android Development Tools for Eclipse is a step-by-step guide that provides you with hands-on, practical, and to the point discussion and steps for using Eclipse tools for developing, debugging, and signing Android applications for distribution. It also teaches you to incorporate advertisements to monetize your applications. Every concept and its usage has been demonstrated in this book by implementing them via real world applications.</p><p></p><p>Android Development Tools for Eclipse starts with the installation of ADT, and then discusses important tools before guiding you through Android application development from scratch, demonstrating different concepts and implementation before finally helping you distribute your applications in the Android market. You will start the development of your first application, explore project structure, and add different widgets including multimedia ones.</p><p></p><p>You will learn everything about developing, debugging, testing, distributing, and monetizing your Android application using Eclipse ADT.</p>
Table of Contents (10 chapters)
9
Index

Fragment

A Fragment is an independent component that can be connected to an Activity or simply is a subactivity. Typically it defines a part of UI but can also exist with no user interface, that is, headless. An instance of fragment must exist within an activity.

Fragments ease the reuse of components for different layouts. Fragments are the way to support UI variances across different types of screens. The most popular use is for building single pane layouts for phones and multipane layouts for tablets (large screens). Fragment was introduced in Android 3.0 API 11. Fragment can also be used for supporting different layouts for portrait and landscape orientations.

A fragment stops as activity stops, and is destroyed as activity is destroyed. The OnCreateView() method is where the view UI is created via the inflate() method call. Following is the screenshot of our application in landscape orientation from our previous code:

Fragment

We will make use of fragment to define a landscape layout for our DistanceConverter...