Sign In Start Free Trial
Account

Add to playlist

Create a Playlist

Modal Close icon
You need to login to use this feature.
  • Book Overview & Buying Asynchronous Android Programming
  • Table Of Contents Toc
  • Feedback & Rating feedback
Asynchronous Android Programming

Asynchronous Android Programming

By : Vasconcelos, Liles
5 (3)
close
close
Asynchronous Android Programming

Asynchronous Android Programming

5 (3)
By: Vasconcelos, Liles

Overview of this book

Asynchronous programming has acquired immense importance in Android programming, especially when we want to make use of the number of independent processing units (cores) available on the most recent Android devices. With this guide in your hands you’ll be able to bring the power of Asynchronous programming to your own projects, and make your Android apps more powerful than ever before! To start with, we will discuss the details of the Android Process model and the Java Low Level Concurrent Framework, delivered by Android SDK. We will also guide you through the high-level Android-specific constructs available on the SDK: Handler, AsyncTask, and Loader. Next, we will discuss the creation of IntentServices, Bound Services and External Services, which can run in the background even when the user is not interacting with it. You will also discover AlarmManager and JobScheduler APIs, which are used to schedule and defer work without sacrificing the battery life. In a more advanced phase, you will create background tasks that are able to execute CPU-intensive tasks in a native code-making use of the Android NDK. You will be then guided through the process of interacting with remote services asynchronously using the HTTP protocol or Google GCM Platform. Using the EventBus library, we will also show how to use the Publish-Subscribe software pattern to simplify communication between the different Android application components by decoupling the event producer from event consumer. Finally, we will introduce RxJava, a popular asynchronous Java framework used to compose work in a concise and reactive way. Asynchronous Android will help you to build well-behaved applications with smooth responsive user interfaces that delight the users with speedy results and data that’s always fresh.
Table of Contents (14 chapters)
close
close
2
2. Performing Work with Looper, Handler, and HandlerThread
13
Index

Chapter 4. Exploring the Loader

In the previous chapter we familiarized ourselves with the simplest and high level, Android-specific, asynchronous construct; the android.os.AsyncTask. The AsyncTask is a lean construct used to create background work that offers a simple interface to publish results and send progress to the main thread. In this chapter we are going to move our focus to android.content.Loader, a high level Android-specific pattern used to load content asynchronously from content providers or data sources over a worker thread with content change capabilities and component lifecycle awareness.

In this chapter we will cover the the following topics:

  • Introducing loaders
  • Loader API
  • Loader lifecycle
  • Loading data with Loader
  • Building responsive apps with AsyncTaskLoader
  • Building responsive apps with CursorLoader
  • Combining loaders
  • Applications of loaders

Unlock full access

Continue reading for free

A Packt free trial gives you instant online access to our library of over 7000 practical eBooks and videos, constantly updated with the latest in tech
bookmark search playlist download font-size

Change the font size

margin-width

Change margin width

day-mode

Change background colour

Close icon Search
Country selected

Close icon Your notes and bookmarks

Delete Bookmark

Modal Close icon
Are you sure you want to delete it?
Cancel
Yes, Delete

Confirmation

Modal Close icon
claim successful

Buy this book with your credits?

Modal Close icon
Are you sure you want to buy this book with one of your credits?
Close
YES, BUY