Asynchronous Android Programming - Second Edition电子书

Asynchronous Android Programming Second Edition

Table of Contents

Asynchronous Android Programming Second Edition

Credits

About the Author

About the Reviewer

www.PacktPub.com

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Preface

What this book covers

What you need for this book

Who this book is for

Conventions

Reader feedback

Customer support

Downloading the example code

Errata

Piracy

Questions

1. Asynchronous Programming in Android

Android software stack

Dalvik runtime

ART runtime

Memory sharing and Zygote

Android process model

Process ranks

Process sandboxing

Android thread model

The main thread

The Application Not Responding (ANR) dialog

Maintaining responsiveness

Concurrency in Android

Correctness issues in concurrent programs

Liveness issues in concurrent programs

Thread coordination

Concurrent package constructs

Executor framework

Android primary building blocks

Activity concurrent issues

Manipulating the user interface

Service concurrent issues

Started services issues

Bound services issues

Service in a separate process

Broadcast receiver concurrent issues

Android concurrency constructs

Summary

2. Performing Work with Looper, Handler, and HandlerThread

Understanding Looper

Understanding Handler

Sending work to a Looper

Scheduling work with post

Using Handler to defer work

Leaking implicit references

Leaking explicit references

Updating the UI with Handler

Canceling a pending Runnable

Scheduling work with send

Cancelling pending messages

Composition versus inheritance

Multithreading with Handler and ThreadHandler

Looper message dispatching debugging

Sending messages versus posting runnables

Applications of Handler and HandlerThread

Summary

3. Exploring the AsyncTask

Introducing AsyncTask

Declaring AsyncTask types

Executing AsyncTasks

Providing indeterministic progress feedback

Providing deterministic progress feedback

Canceling an AsyncTask

AsyncTask Execution State

Handling exceptions

Controlling the level of concurrency

Common AsyncTask issues

Fragmentation issues

Memory leaks

Activity lifecycle issues

Handling lifecycle issues with early cancellation

Handling lifecycle issues with retained headless fragments

Applications of AsyncTask

Summary

4. Exploring the Loader

Introducing Loaders

Loader API

Loader

Loader Manager

LoaderManager.LoaderCallbacks

Loader lifecycle

Loading data with Loader

Building responsive apps with AsyncTaskLoader

Building responsive apps with CursorLoader

Combining Loaders

Applications of Loader

Summary

5. Interacting with Services

Introducing Service

Started service

Building responsive apps with IntentService

Handling results

Posting results with PendingIntent

Posting results as system notifications

Applications of IntentService

HTTP uploads with IntentService

Reporting progress

Bound Service

Communicating with a Local Service

Broadcasting results with intents

Detecting unhandled broadcasts

Applications of Services

Summary

6. Scheduling Work with AlarmManager

Introducing AlarmManager

Scheduling alarms with AlarmManager

Setting alarms in recent Android versions

Testing your alarms in Doze Mode

Setting a Window alarm

Debugging AlarmManager alarms

Canceling alarms

Scheduling repeating alarms

Scheduling an alarm clock

Handling alarms

Handling alarms with Activities

Handling alarms with BroadcastReceiver

Working with BroadcastReceiver

Asynchronous work with goAsync

Handling alarms with Services

Staying awake with WakeLocks

Resetting alarms after a system reboot

Applications of AlarmManager

Summary

7. Exploring the JobScheduler API

Introduction to JobScheduler

Setting running criteria

Scheduling a job

Implementing the JobService

Listing pending jobs

Canceling a job

Scheduling a periodic job

Applications of the JobScheduler

Summary

8. Interacting with the Network

Introducing Android HTTP clients

AndroidHttpClient

HttpURLConnection

Performing HTTP requests asynchronously

Retrieving a text response

Interacting with JSON web APIs

Converting Java objects to JSON

Interacting with XML web APIs

Converting Java objects to XML

Converting XML to Java objects

Customizing HTTP timeouts

Communicating securely over SSL sessions

Summary

9. Asynchronous Work on the Native Layer

Introduction to JNI

Android NDK (Native Development Kit)

Calling C functions from Java code

Calling C++ functions from native code

Accessing Java objects from native code

Executing native background work on Java threads

Executing asynchronous work on a native thread

Attaching and detaching native threads from JVM

JNI references explained

Interacting with UI from native threads

Starting the native threads

Stopping the native threads

Handling Java exceptions in the native layer

Interacting with a Java monitor from native code

Wrapping native data objects

Summary

10. Network Interactions with GCM

Introduction to GCM

Setting up and configuring GCM for your application

Registering the GCM Receiver

Setting up a registration service

InstanceID listener

Receiving downstream messages

Receiving messages from topic

Sending upstream messages

GcmListenerService delivery callbacks

Executing tasks with GCM Network Manager

Building a one shot task

Summary

11. Exploring Bus-based Communications

Introduction to bus-based communication

EventBus library

Defining events

Submitting events

Registering sbscribers

Thread mode

Posting sticking events

Removing sticky events

Summary

12. Asynchronous Programing with RxJava

Introduction to RxJava

Cold versus Hot Observable

RxJava setup

Creating Observables

Transforming Observables

Understanding Schedulers

Performing IO operations with Schedulers

Canceling subscriptions

Composing Observables

Monitoring the event stream

Combining Observables

Observing UI Events with RxJava

Working with Subjects

Summary

Index