Android Concurrency

367 Pages·2016·10.65 MB·English

by  G. Blake Meike

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Android™ Concurrency
G. Blake Meike
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ISBN-13: 978-0-13-417743-4
ISBN-10: 0-13-417743-6
Text printed in the United States on recycled paper at RR Donnelley in
Crawfordsville, Indiana
First printing: June 2016
First printing: June 2016
Editor-in-Chief
Greg Wiegand Executive Editor
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About the Android Deep Dive Series
Zigurd Mednieks, Series Editor The Android Deep Dive Series is for
intermediate and expert developers who use Android Studio and Java, but
do not have comprehensive knowledge of Android system-level
programming or deep knowledge of Android APIs. Readers of this series
want to bolster their knowledge of fundamentally important topics.
Each book in the series stands alone and provides expertise, idioms, frameworks,
and engineering approaches. They provide in-depth information, correct patterns
and idioms, and ways of avoiding bugs and other problems. The books also take
advantage of new Android releases, and avoid deprecated parts of the APIs.
About the Series Editor
Zigurd Mednieks is a consultant to leading OEMs, enterprises, and
entrepreneurial ventures creating Android-based systems and software.
Previously he was chief architect at D2 Technologies, a voice-over-IP (VoIP)
technology provider, and a founder of OpenMSobile, an Android-compatibility
technology company. At D2 he led engineering and product definition work for
products that blended communication and social media in purpose-built
embedded systems and on the Android platform. He is lead author of
Programming Android and Enterprise Android.
This book is for my mother, Sally Ann Obermeyer Meike, who
encouraged me to be a snoot, long before David Foster Wallace
re-purposed the term
Contents at a Glance
Preface
About the Author
Acknowledgements
1 Understanding Concurrency
2 Java Concurrency
3 The Android Application Model
4 Async Tasks and Loaders
5 Looper/Handler
6 Services, Processes, and Binder IPC
7 Periodic Tasks
8 Concurrency Tools
Bibliography
Index
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Table of Contents
Preface
About the Author
Acknowledgements
1 Understanding Concurrency
Concurrency Made Hard
Concurrency in Software
Concurrency in Hardware
Concurrency Made Simple
Threads
Atomic Execution
Visibility
Summary
2 Java Concurrency
Java Threads
The Thread Class
Runnables
Synchronization
Mutexes
Common Synchronization Errors
Volatile
Wait and Notify
Wait
Notify
The Concurrency Package
Safe Publication
Executors
Futures
Summary
3 The Android Application Model
Lifecycles and Components
Process Priority
Component Lifecycles
Android Applications as Web Apps
The Android Process
Application Startup
The Android Main Thread
Summary
4 Async Tasks and Loaders
Async Task Architecture
Async Task Basics
AsyncTask Execution
AsyncTask Completion
Using AsyncTasks
AsyncTask: Considered Dangerous
Getting It Right
Loaders and Cursor Loaders
AsyncTasks: What Went Wrong
Summary
5 Looper/Handler
Introducing the Looper/Handler
Basic Looper/Handler
Delegating Execution
Some Gory Details
Handlers and Messages
Starting a Looper
The Native Looper
Scheduling and the Sync-Barrier