Book Image

Learning Android Application Development

By : Raimon Ràfols Montane, Laurence Dawson
Book Image

Learning Android Application Development

By: Raimon Ràfols Montane, Laurence Dawson

Overview of this book

The mobile app market is huge. But where do you start? And how you can deliver something that takes Google Play by storm? This guide is the perfect route into Android app development – while it’s easy for new apps to sink without a trace, we’ll give you the best chance of success with practical and actionable guidance that will unlock your creativity and help you put the principles of Android development into practice. From the fundamentals and getting your project started to publishing your app to a huge market of potential customers, follow this guide to become a confident, creative and reliable mobile developer. Get to grips with new components in Android 7 such as RecyclerView, and find out how to take advantage of automated testing, and, of course, much, much more. What are you waiting for? There’s never been a better time – or a better way – to get into Android app development.
Table of Contents (16 chapters)
Learning Android Application Development
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface

ListView and ListActivity


As described in Google's documentation (http://developer.android.com/guide/topics/ui/layout/listview.html), a ListView element is a view group that displays a list of items and enables scrolling if the items do not fit the size of the ListView element. In this section, we will build a simple ListView element—introducing adapters briefly (we will cover them in more depth in the next section) but we will not spend much time on the ListView element, as we will favor the use of the newer RecyclerView element instead in later sections. Using RecyclerView over ListView is highly recommended as it is more flexible and does not leave performance improvements optional. ListActivity is like a normal activity, but with only one single element on it: ListView.

ListView

Let's begin, first of all, with the ListView element. Adding ListView is straightforward; just add it to an existing layout or view group and it will appear in the preview view, as shown in the following screenshot...