9780321741233

Want to get started building applications for Android, the worldrs"s hottest, fast-growing mobile platform? Already building Android applications and want to get better at it? This book brings together all the expert guidanceand codeyours"ll need! Completely up-to-date to reflect the newest and most widely used Android SDKs,The Android Developerrs"s Cookbookis the essential resource for developers building apps for any Android device, from phones to tablets. Proven, modular recipes take you from the absolute basics to advanced location-based services, security techniques, and performance optimization. Yours"ll learn how to write apps from scratch, ensure interoperability, choose the best solutions for common problems, and avoid development pitfalls. Coverage includes: Implementing threads, services, receivers, and other background tasks Providing user alerts Organizing user interface layouts and views Managing user-initiated events such as touches and gestures Recording and playing audio and video Using hardware APIs available on Android devices Interacting with other devices via SMS, web browsing, and social networking Storing data efficiently with SQLite and its alternatives Accessing location data via GPS Using location-related services such as the Google Maps API Building faster applications with native code Providing backup and restore with the Android Backup Manager Testing and debugging apps throughout the development cycle Turn toThe Android Developerrs"s Cookbookfor proven, expert answersand the code you need to implement them. Itrs"s all you need to jumpstart any Android project, and create high-value, feature-rich apps that sell!

James Steele was doing post-doctoral work in physics at MIT when he decided to join a startup in Silicon Valley. Fifteen years later and he continues to innovate, bringing research projects to production in both the consumer and mobile market. He actively presents and participates in various Silicon Valley new technology groups.

Nelson To has more than ten applications of his own in the Android Market. He also has worked on enterprise Android applications for Think Computer, Inc. (PayPhone),AOL (AIM), Stanford University (Education App), and Logitech (Google TV). He also assists in organizing the SiliconValley Android Meetup Community and teaches Android classes both in the Bay Area and China.

1 Overview of Android 1

The Evolution of Android 1

The Dichotomy of Android 2

Devices Running Android 2

HTC Models 6

Motorola Models 6

Samsung Models 6

Tablets 7

Other Devices 7

Hardware Differences on Android Devices 8

Screens 8

User Input Methods 9

Sensors 9

Features of Android 10

Multiprocess and App Widgets 11

Touch, Gestures, and Multitouch 11

Hard and Soft Keyboards 11

Android Development 11

How to Use the Recipes in This Book 12

Designing Applications Well 12

Maintaining Forward Compatibility 13

Robustness 13

Software Development Kit 14

Installing and Upgrading 14

Software Features and API Level 15

Emulator and Android Device Debug 16

Using the Android Debug Bridge 18

Signing and Publishing 18

Android Market 19

End-User License Agreement 19

Improving App Visibility 19

Differentiating an App 20

Charging for an App 20

Managing Reviews and Updates 21

Alternatives to the Android Market 22

2 Application Basics: Activities and Intents 23

Android Application Overview 23

Recipe: Creating a Project and an Activity 24

Directory Structure of Project and Autogenerated

Content 26

Android Package and Manifest File 28

Renaming Parts of an Application 30

Activity Lifecycle 30

Recipe: Utilizing Other Lifecycle Functions 31

Recipe: Forcing Single Task Mode 33

Recipe: Forcing Screen Orientation 34

Recipe: Saving and Restoring Activity Information 34

Multiple Activities 35

Recipe: Using Buttons and TextView 36

Recipe: Launching Another Activity from an Event 37

Recipe: Launching an Activity for a Result Using Speech to Text 41

Recipe: Implementing a List of Choices 43

Recipe: Using Implicit Intents for Creating an Activity 44

Recipe: Passing Primitive Data Types Between Activities 46

3 Threads, Services, Receivers, and Alerts 51

Threads 51

Recipe: Launching a Secondary Thread 51

Recipe: Creating a Runnable Activity 55

Recipe: Setting a Thread’s Priority 57

Recipe: Canceling a Thread 57

Recipe: Sharing a Thread Between Two

Applications 58

Messages Between Threads: Handlers 58

Recipe: Scheduling a Runnable Task from the Main Thread 59

Recipe: Using a Countdown Timer 61

Recipe: Handling a Time-Consuming Initialization 62

Services 64

Recipe: Creating a Self-Contained Service 65

Adding a Broadcast Receiver 69

Recipe: Starting a Service When the Camera Button Is

Pressed 70

App Widgets 72

Recipe: Creating an App Widget 72

Alerts 74

Recipe: Using Toast to Show a Brief Message on the

Screen 74

Recipe: Using an Alert Dialog Box 75

Recipe: Showing Notification in Status Bar 76

4 User Interface Layout 79

Resource Directories and General Attributes 79

Recipe: Specifying Alternate Resources 81

Views and ViewGroups 82

Recipe: Building Layouts in the Eclipse Editor 83

Recipe: Controlling the Width and Height of UI

Elements 86

Recipe: Setting Relative Layout and Layout ID 89

Recipe: Declaring a Layout Programmatically 90

Recipe: Updating a Layout from a Separate

Thread 92

Text Manipulation 94

Recipe: Setting and Changing Text Attributes 95

Recipe: Providing Text Entry 98

Recipe: Creating a Form 100

Other Widgets: From Buttons to Seek Bars 101

Recipe: Using Image Buttons in a Table Layout 102

Recipe: Using Check Boxes and Toggle Buttons 105

Recipe: Using Radio Buttons 108

Recipe: Creating a Drop-Down Menu 110

Recipe: Using a Progress Bar 112

Recipe: Using a SeekBar 114

5 User Interface Events 117

Event Handlers and Event Listeners 117

Recipe: Intercepting a Physical Key Press 117

Recipe: Building Menus 121

Recipe: Defining Menus in XML 126

Recipe: Utilizing the SEARCH Key 127

Recipe: Reacting to Touch Events 128

Recipe: Listening for Fling Gestures 130

Recipe: Using Multitouch 133

Advanced User Interface Libraries 136

Recipe: Using Gestures 136

Recipe: Drawing 3D Images 140

6 Multimedia Techniques 147

Images 148

Recipe: Loading an Image for Manipulation 148

Audio 154

Recipe: Choosing and Playing Back Audio Files 154

Recipe: Recording Audio Files 157

Recipe: Manipulating Raw Audio 158

Recipe: Using Sound Resources Efficiently 163

Recipe: Adding Media and Updating Paths 165

Video 165

7 Hardware Interface 169

Camera 169

Recipe: Customizing the Camera 170

Other Sensors 175

Recipe: Getting a Device’s Rotational Attitude 176

Recipe: Using the Temperature and Light Sensor 179

Telephony 180

Recipe: Utilizing the Telephony Manager 181

Recipe: Listening for Phone States 183

Recipe: Dialing a Phone Number 185

Bluetooth 185

Recipe: Turning on Bluetooth 186

Recipe: Discovering Bluetooth Devices 187

Recipe: Pairing with Bonded Bluetooth Devices 188

Recipe: Opening a Bluetooth Socket 188

Recipe: Using Device Vibration 191

Recipe: Accessing the Wireless Network 191

8 Networking 195

Using SMS 195

Recipe: Autosend an SMS Based on a Received

SMS 197

Using Web Content 204

Recipe: Customizing a Web Browser 204

Recipe: Using an HTTP GET 204

Recipe: Using HTTP POST 209

Social Networking 210

Recipe: Integrating with Twitter 210

9 Data Storage Methods 221

Shared Preferences 221

Recipe: Creating and Retrieving Shared

Preferences 222

Recipe: Using the Preferences Framework 222

Recipe: Changing the UI Based on Stored Data 225

Recipe: Adding a EULA 228

SQLite Database 232

Recipe: Creating a Separate Database Package 232

Recipe: Using a Separate Database Package 236

Recipe: Creating a Personal Diary 239

Content Provider 243

Recipe: Creating a Custom Content Provider 244

File Saving and Loading 249

10 Location-Based Services 251

Location Basics 251

Recipe: Retrieving Last Location 253

Recipe: Updating Location Upon Change 254

Recipe: Listing All Enabled Providers 256

Recipe: Translating a Location to Address (Reverse Geocoding) 258

Recipe: Translating an Address to Location (Geocoding) 261

Using Google Maps 263

Recipe: Adding Google Maps to an Application 265

Recipe: Adding Markers on a Map 267

Recipe: Adding Views to a Map 271

Recipe: Marking the Device’s Current Location on a

Map 274

Recipe: Setting up a Proximity Alert 274

11 Advanced Android Development 277

Android Custom View 277

Recipe: Customizing a Button 277

Android Native Components 283

Recipe: Developing a Native Component 284

Android Security 287

Recipe: Declaring and Enforcing Permissions 288

Android Inter-Process Communication 288

Recipe: Implementing a Remote Procedure Call 289

Android Backup Manager 294

Recipe: Creating a Backup of Runtime Data 294

Recipe: Backing Up Files to the Cloud 296

Recipe: Triggering Backup and Restore 296

Android Animation 298

Recipe: Creating an Animation 299

12 Debugging 303

Eclipse Built-in Debug Tools 303

Recipe: Specifying a Run Configuration 303

Recipe: Using the DDMS 304

Recipe: Debugging Through Breakpoints 306

Android SDK Debug Tools 307

Recipe: Using the Android Debug Bridge 307

Recipe: Using LogCat 307

Recipe: Using the Hierarchy Viewer 309

Recipe: Using TraceView 311

Android System Debug Tools 313

Recipe: Setting up GDB Debugging 315

TOC, 9780321741233, 9/25/2010

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The Android Developer's Cookbook Building Applications with the Android SDK: Building Applications with the Android SDK

The Android Developer's Cookbook Building Applications with the Android SDK: Building Applications with the Android SDK

0321741234

Summary

Author Biography

Table of Contents

Supplemental Materials