Book Image

Mastering Android Application Development

By : Antonio Pachon
Book Image

Mastering Android Application Development

By: Antonio Pachon

Overview of this book

There are millions of Android apps out there for people to download – how do you make sure yours has the edge? It’s not always about innovation and ideas – the most successful apps are those that are able to satisfy customer demands – they’re the ones that look the best, the fastest, and the easiest and most intuitive to use. This book shows you how to create Android applications that do precisely that – it has been designed help you consider and answer those questions throughout the development process, so you can create applications that stand out against the crowd. Learn how to create exemplary UIs that contribute to a satisfying user experience through the lens of Material Design, and explore how to harness the range of features within the Android SDK to help you. Dive deeper into complex programming concepts and discover how to leverage concurrency and navigate memory management and image handling. You’ll also find further guidance on testing and debugging so you can guarantee that your application is reliable and robust for users. Beyond this you’ll find out how to extend your app and add greater functionality, including notifications, location services, adverts and app billing (essential if you want to properly monetize your creation!). To make sure you have confidence at every stage in the process, the book also shows you how to release your app to the Play store – to make sure your maximising your efforts to create a popular Android application!
Table of Contents (19 chapters)
Mastering Android Application Development
About the Author
About the Reviewers

Chapter 7. Image Handling and Memory Management

In this chapter, we will take a look at how to show images downloaded from a URL. We will discuss how to do this using the Android native SDK as well as the commonly used third-party libraries. We will consider key concepts and features such as download, compression, cache systems, and storage in memory or disk.

We will also discuss what a nine patch is and how to create it, and we will speak about the different size and density folder for drawables by introducing vector drawables.

The final section will be focused on memory management. Identifying memory leaks in our app is a critical task, which usually happens while working with images. We will take a look at the common mistakes that can lead to these leaks as well as general tips on how to prevent them.

  • Displaying images from the network

    • The traditional way

    • Volley ImageDownloader

    • Picasso

  • Images

    • Vector drawables

    • Animated vector drawables

    • Nine patch

  • Memory management

    • Detecting and locating leaks

  • Preventing...