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.
What You Will Learn
- Learn about the Android Process and the low level concurrent and multithread constructs available on Android SDK.
- Use AsyncTask and Loader framework to load data in the background, delivering progress results in the meantime
- How to enhance UI performance and responsiveness by sending work to a Service running in the background.
- How to defer, schedule and batch work on the Android System without compromising the battery life and user experience.
- How to use the JNI interface to execute concurrent work on native code (C/C++)
- How to pull and push data from your network servers using Google GCM Platform.
- How to use the Publish/Subscribe Pattern on Android to decouple the the message consumer from the message producer.
- How to create and compose tasks with RxJava to execute complex asynchronous work in a predictable way.
- Asynchronous Programming in Android
- Performing Work with Looper, Handler, and HandlerThread
- Exploring the Asynctask
- Exploring the Loader
- Interacting with Services
- Scheduling Work with Alarmmanager
- Exploring the Jobscheduler API
- Interacting with the Network
- Asynchronous Work on the Native Layer
- Network Interactions with GCM
- Exploring Bus based Communications
- Asynchronous Programing with RxJava