Android Wireless Application Development Volume I

Android Essentials
Addison Wesley (Verlag)
  • 3. Auflage
  • |
  • erschienen am 22. Februar 2012
  • |
  • 535 Seiten
E-Book | ePUB mit Adobe-DRM | Systemvoraussetzungen
978-0-13-290969-3 (ISBN)
Android Wireless Application Development has earned a reputation as the most useful real-world guide to building robust, commercial-grade Android apps. Now, authors Lauren Darcey and Shane Conder have systematically revised and updated this guide for the latest Android SDK 4.0. To accommodate their extensive new coverage, they've split the book into two volumes. Volume I focuses on Android essentials, including setting up your development environment, understanding the application lifecycle, designing effective user interfaces, developing for diverse devices, and optimizing your mobile app development process--from design through publishing. Every chapter has been thoroughly updated for the newest APIs, tools, utilities, and hardware. All sample code has been overhauled and tested on leading devices from multiple companies, and many new examples have been added. Drawing on decades of in-the-trenches experience as professional mobile developers, Darcey and Conder provide valuable new best practices--including powerful techniques for constructing more portable apps. This new edition contains full chapters on Android manifest files, content providers, effective app design, and testing; an all-new chapter on tackling compatibility issues; coverage of today's most valuable new Android tools and utilities; and even more exclusive tips and tricks. An indispensable resource for every Android development team member.

3. Auflage
  • Englisch
  • USA
  • Windows
  • 21,31 MB
978-0-13-290969-3 (9780132909693)
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Lauren Darcey is responsible for the technical leadership and direction of a small software company specializing in mobile technologies, including Android, iOS, Blackberry, Palm Pre, BREW, and J2ME and consulting services. With more than two decades of experience in professional software production, Lauren is a recognized authority in application architecture and the development of commercial-grade mobile applications. Lauren received a B.S. in Computer Science from the University of California, Santa Cruz.

She spends her copious free time traveling the world with her geeky mobile-minded husband and is an avid nature photographer. Her work has been published in books and newspapers around the world. In South Africa, she dove with 4-meter-long great white sharks and got stuck between a herd of rampaging hippopotami and an irritated bull elephant. She's been attacked by monkeys in Japan, gotten stuck in a ravine with two hungry lions in Kenya, gotten thirsty in Egypt, narrowly avoided a coup d'etat in Thailand, geocached her way through the Swiss Alps, drank her way through the beer halls of Germany, slept in the crumbling castles of Europe, and gotten her tongue stuck to an iceberg in Iceland (while being watched by a herd of suspicious wild reindeer).

Shane Conder has extensive development experience and has focused his attention on mobile and embedded development for the past decade. He has designed and developed many commercial applications for Android, iOS, BREW, Blackberry, J2ME, Palm, and Windows Mobile--some of which have been installed on millions of phones worldwide. Shane has written extensively about the mobile industry and evaluated mobile development platforms on his tech blogs and is well-known within the blogosphere. Shane received a B.S. in Computer Science from the University of California.

A self-admitted gadget freak, Shane always has the latest smartphone, tablet, or other mobile device. He can often be found fiddling with the latest technologies, such as cloud services and mobile platforms, and other exciting, state-of-the-art technologies that activate the creative part of his brain. He also enjoys traveling the world with his geeky wife, even if she did make him dive with 4-meter-long great white sharks and almost get eaten by a lion in Kenya. He admits that he has to take at least two phones with him when backpacking--even though there is no coverage--and that he snickered and whipped out his Android phone to take a picture when Laurie got her tongue stuck to that iceberg in Iceland, and that he is catching on that he should be writing his own bio.

Darcey and Conder coauthored Sams Teach Yourself Android Application Development in 24 Hours.

Introduction 1

Who Should Read This Book 1

Key Questions Answered in This Volume 2

How These Books Are Structured 2

An Overview of Changes in This Edition 4

Development Environment Used in This Book 5

Supplementary Materials Available 6

Where to Find More Information 6

Conventions Used in This Book 7

Contacting the Authors 8


Chapter 1 Introducing Android 11

A Brief History of Mobile Software Development 11

Way Back When 11

"The Brick" 13

Wireless Application Protocol (WAP) 15

Proprietary Mobile Platforms 17

The Open Handset Alliance 19

Google Goes Wireless 19

Forming the Open Handset Alliance 19

Manufacturers: Designing Android Devices 20

Mobile Operators: Delivering the Android Experience 21

Apps Drive Device Sales: Developing Android Applications 22

Taking Advantage of All Android Has to Offer 22

The Android Marketplace: Where We're at Now 22

Android Platform Differences 23

Android: A Next-Generation Platform 24

Free and Open Source 25

Familiar and Inexpensive Development Tools 25

Reasonable Learning Curve for Developers 26

Enabling Development of Powerful Applications 26

Rich, Secure Application Integration 26

No Costly Obstacles to Publication 27

A "Free Market" for Applications 27

A Growing Platform 28

The Android Platform 29

Android's Underlying Architecture 29

Security and Permissions 31

Developing Android Applications 32

Summary 35

References and More Information 35

Chapter 2 Setting Up Your Android Development Environment 37

Configuring Your Development Environment 37

Configuring Your Operating System for Device Debugging 39

Configuring Your Android Hardware for Debugging 39

Upgrading the Android SDK 41

Problems with the Android Software Development Kit 41

Exploring the Android SDK 42

Understanding the Android SDK License Agreement 42

Reading the Android SDK Documentation 43

Exploring the Core Android Application Framework 43

Exploring the Core Android Tools 46

Exploring the Android Sample Applications 50

Summary 52

References and More Information 52

Chapter 3 Writing Your First Android Application 53

Testing Your Development Environment 53

Adding the Snake Project to Your Eclipse Workspace 54

Creating an Android Virtual Device (AVD) for Your Snake Project 56

Creating a Launch Configuration for Your Snake Project 58

Running the Snake Application in the Android Emulator 59

Building Your First Android Application 62

Creating and Configuring a New Android Project 62

Core Files and Directories of the Android Application 65

Creating an AVD for Your Project 65

Creating a Launch Configuration for Your Project 66

Running Your Android Application in the Emulator 67

Debugging Your Android Application in the Emulator 69

Adding Logging Support to Your Android Application 73

Adding Some Media Support to Your Application 74

Debugging Your Application on the Hardware 78

Summary 80

References and More Information 81

Chapter 4 Mastering the Android Development Tools 83

Using the Android Documentation 83

Leveraging the Android Emulator 85

Viewing Application Log Data with LogCat 86

Debugging Applications with DDMS 87

Using Android Debug Bridge (ADB) 87

Using the Resource Editors and UI Designer 88

Using the Android Hierarchy Viewer 91

Launching the Hierarchy Viewer 92

Working in Layout View Mode 92

Optimizing Your User Interface 94

Working in Pixel Perfect Mode 94

Working with Nine-Patch Stretchable Graphics 95

Working with Other Android Tools 98

Summary 99

References and More Information 100


Chapter 5 Understanding the Anatomy of an Android Application 103

Mastering Important Android Terminology 103

Using the Application Context 104

Retrieving the Application Context 104

Using the Application Context 104

Performing Application Tasks with Activities 106

The Lifecycle of an Android Activity 106

Organizing Activity Components with Fragments 111

Managing Activity Transitions with Intents 113

Transitioning Between Activities with Intents 113

Organizing Application Navigation with Activities and Intents 115

Working with Services 116

Receiving and Broadcasting Intents 117

Summary 117

References and More Information 118

Chapter 6 Defining Your Application Using the Android Manifest File 119

Configuring Android Applications Using the Android Manifest File 119

Editing the Android Manifest File 120

Managing Your Application's Identity 124

Versioning Your Application 125

Setting the Application Name and Icon 125

Enforcing Application System Requirements 125

Targeting Specific SDK Versions 126

Enforcing Application Platform Requirements 129

Working with External Libraries 130

Other Application Configuration Settings and Filters 131

Registering Activities in the Android Manifest 131

Designating a Primary Entry Point Activity for Your Application Using an Intent Filter 132

Configuring Other Intent Filters 132

Registering Other Application Components 133

Working with Permissions 133

Registering Permissions Your Application Requires 133

Registering Permissions Your Application Enforces 134

Exploring Other Manifest File Settings 135

Summary 136

References and More Information 136

Chapter 7 Managing Application Resources 137

What Are Resources? 137

Storing Application Resources 137

Resource Value Types 138

Accessing Resources Programmatically 142

Setting Simple Resource Values Using Eclipse 143

Working with Different Types of Resources 146

Working with String Resources 146

Using String Resources as Format Strings 147

Working with String Arrays 149

Working with Boolean Resources 149

Working with Integer Resources 150

Working with Colors 151

Working with Dimensions 152

Working with Simple Drawables 153

Working with Images 154

Working with Animation 156

Working with Menus 158

Working with XML Files 159

Working with Raw Files 160

References to Resources 161

Working with Layouts 162

Referencing System Resources 167

Summary 168

References and More Information 168


Chapter 8 Exploring User Interface Screen Elements 171

Introducing Android Views and Layouts 171

Introducing the Android View 171

Introducing the Android Controls 171

Introducing the Android Layout 172

Displaying Text to Users with TextView 173

Configuring Layout and Sizing 173

Creating Contextual Links in Text 174

Retrieving Data from Users with EditText 176

Retrieving Text Input Using EditText Controls 176

Constraining User Input with Input Filters 178

Helping the User with Autocompletion 179

Giving Users Choices Using Spinner Controls 181

Allowing Simple User Selections with Buttons, Check Boxes, Switches, and Radio Groups 183

Using Basic Buttons 184

Using CheckBox and ToggleButton Controls 186

Using RadioGroup and RadioButton 187

Retrieving Dates and Times from Users 190

Using Indicators to Display Data to Users 191

Indicating Progress with ProgressBar 192

Adjusting Progress with SeekBar 194

Displaying Rating Data with RatingBar 194

Showing Time Passage with the Chronometer 195

Displaying the Time 196

Summary 197

References and More Information 198

Chapter 9 Designing User Interfaces with Layouts 199

Creating User Interfaces in Android 199

Creating Layouts Using XML Resources 199

Creating Layouts Programmatically 201

Organizing Your User Interface 203

Using ViewGroup Subclasses for Layout Design 204

Using ViewGroup Subclasses as View Containers 204

Using Built-in Layout Classes 205

Using FrameLayout 207

Using LinearLayout 209

Using RelativeLayout 211

Using TableLayout 214

Using GridLayout 216

Using Multiple Layouts on a Screen 220

Using Container Control Classes 220

Using Data-Driven Containers 221

Organizing Screens with Tabs 226

Adding Scrolling Support 229

Exploring Other View Containers 230

Summary 231

References and More Information 231

Chapter 10 Working with Fragments 233

Understanding Fragments 233

Understanding the Fragment Lifecycle 234

Working with Special Types of Fragments 237

Designing Fragment-Based Applications 238

Using the Android Support Package 247

Adding Fragment Support to Legacy Applications 247

Using Fragments in New Applications Targeting Older Platforms 248

Linking the Android Support Package to Your Project 248

Summary 249

References and More Information 250

Chapter 11 Working with Dialogs 251

Choosing Your Dialog Implementation 251

Exploring the Different Types of Dialogs 252

Working with Dialogs: The Legacy Method 253

Tracing the Lifecycle of a Dialog 254

Working with Custom Dialogs 256

Working with Dialogs: The Fragment Method 257

Summary 260

References and More Information 260


Chapter 12 Using Android Preferences 263

Working with Application Preferences 263

Determining When Preferences Are Appropriate 263

Storing Different Types of Preference Values 264

Creating Private Preferences for Use by a Single Activity 264

Creating Shared Preferences for Use by Multiple Activities 265

Searching and Reading Preferences 265

Adding, Updating, and Deleting Preferences 266

Reacting to Preference Changes 267

Finding Preferences Data on the Android File System 267

Creating Manageable User Preferences 268

Creating a Preference Resource File 269

Using the PreferenceActivity Class 270

Summary 273

References and More Information 273

Chapter 13 Working with Files and Directories 275

Working with Application Data on the Device 275

Practicing Good File Management 276

Understanding Android File Permissions 277

Working with Files and Directories 277

Exploring with the Android Application Directories 278

Working with Other Directories and Files on the Android File System 282

Summary 284

References and More Information 284

Chapter 14 Using Content Providers 285

Exploring Android's Content Providers 285

Using the MediaStore Content Provider 286

Using the CallLog Content Provider 288

Using the Browser Content Provider 289

Using the CalendarContract Content Provider 291

Using the UserDictionary Content Provider 291

Using the VoicemailContract Content Provider 291

Using the Settings Content Provider 292

Using the Contacts Content Providers 292

Modifying Content Providers Data 297

Adding Records 297

Updating Records 298

Deleting Records 298

Using Third-Party Content Providers 299

Summary 300

References and More Information 300

Chapter 15 Designing Compatible Applications 301

Maximizing Application Compatibility 301

Designing User Interfaces for Compatibility 303

Working with Fragments 305

Leveraging the Android Support Package 305

Supporting Specific Screen Types 305

Working with Nine-Patch Stretchable Graphics 306

Using the Working Square Principle 306

Providing Alternative Application Resources 308

Understanding How Resources Are Resolved 308

Organizing Alternative Resources with Qualifiers 309

Providing Resources for Different Orientations 316

Using Alternative Resources Programmatically 316

Organizing Application Resources Efficiently 316

Targeting Tablets, TVs, and Other New Devices 318

Targeting Tablet Devices 318

Targeting Google TV Devices 319

Summary 321

References and More Information 321


Chapter 16 The Android Software Development Process 325

An Overview of the Mobile Development Process 325

Choosing a Software Methodology 326

Understanding the Dangers of Waterfall Approaches 326

Understanding the Value of Iteration 327

Gathering Application Requirements 327

Determining Project Requirements 327

Developing Use Cases for Mobile Applications 329

Incorporating Third-Party Requirements 330

Managing a Device Database 330

Assessing Project Risks 333

Identifying Target Devices 333

Acquiring Target Devices 335

Determining the Feasibility of Application Requirements 336

Understanding Quality Assurance Risks 336

Writing Essential Project Documentation 337

Developing Test Plans for Quality Assurance Purposes 338

Providing Documentation Required by Third Parties 338

Providing Documentation for Maintenance and Porting 338

Leveraging Configuration Management Systems 339

Choosing a Source Control System 339

Implementing an Application Version System That Works 339

Designing Mobile Applications 340

Understanding Mobile Device Limitations 340

Exploring Common Mobile Application Architectures 340

Designing for Extensibility and Maintenance 341

Designing for Application Interoperability 342

Developing Mobile Applications 342

Testing Mobile Applications 343

Deploying Mobile Applications 343

Determining Target Markets 344

Supporting and Maintaining Mobile Applications 344

Track and Address Crashes Reported by Users 345

Testing Firmware Upgrades 345

Maintaining Adequate Application Documentation 345

Managing Live Server Changes 345

Identifying Low-Risk Porting Opportunities 345

Summary 346

References and More Information 346

Chapter 17 Designing and Developing Bulletproof Android Applications 347

Best Practices in Designing Bulletproof Mobile Applications 347

Meeting Mobile Users' Demands 348

Designing User Interfaces for Mobile Devices 348

Designing Stable and Responsive Mobile Applications 349

Designing Secure Mobile Applications 351

Designing Mobile Applications for Maximum Profit 351

Leveraging Third-Party Quality Standards 352

Designing Mobile Applications for Ease of Maintenance and Upgrades 353

Leveraging Android Tools for Application Design 354

Avoiding Silly Mistakes in Android Application Design 355

Best Practices in Developing Bulletproof Mobile Applications 355

Designing a Development Process That Works for Mobile Development 356

Testing the Feasibility of Your Application Early and Often 356

Using Coding Standards, Reviews, and Unit Tests to Improve Code Quality 357

Handling Defects Occurring on a Single Device 359

Leveraging Android Tools for Development 360

Avoiding Silly Mistakes in Android Application Development 360

Summary 361

References and More Information 361

Chapter 18 Testing Android Applications 363

Best Practices in Testing Mobile Applications 363

Designing a Mobile Application Defect Tracking System 363

Managing the Testing Environment 365

Maximizing Testing Coverage 367

Leveraging Android Tools for Android Application Testing 374

Avoiding Silly Mistakes in Android Application Testing 375

Summary 376

References and More Information 376

Chapter 19 Publishing Your Android Application 377

Choosing the Right Distribution Model 377

Protecting Your Intellectual Property 378

Billing the User 379

Packaging Your Application for Publication 380

Preparing Your Code for Packaging 380

Packing and Signing Your Application 382

Testing the Release Version of Your Application Package 384

Distributing Your Application 385

Publishing on the Android Market 385

Signing Up for a Developer Account on the Android Market 385

Uploading Your Application to the Android Market 387

Uploading Application Marketing Assets 388

Configuring Application Listing Details 388

Configuring Application Publishing Options 390

Configuring Application Contact and Consent Information 390

Publishing Your Application on the Android Market 392

Managing Your Application on the Android Market 392

Publishing Using Other Alternatives 393

Self-Publishing Your Application 394

Summary 395

References and More Information 395


Appendix A The Android Emulator Quick-Start Guide 399

Simulating Reality: The Emulator's Purpose 399

Working with Android Virtual Devices (AVDs) 401

Using the Android Virtual Device Manager 402

Creating an AVD 403

Launching the Emulator with a Specific AVD 407

Maintaining Emulator Performance 407

Configuring Emulator Startup Options 408

Launching an Emulator to Run an Application 408

Launching an Emulator from the Android Virtual Device Manager 410

Configuring the GPS Location of the Emulator 411

Calling Between Two Emulator Instances 413

Messaging between Two Emulator Instances 415

Interacting with the Emulator through the Console 416

Using the Console to Simulate Incoming Calls 416

Using the Console to Simulate SMS Messages 416

Using the Console to Send GPS Coordinates 418

Using the Console to Monitor Network Status 418

Using the Console to Manipulate Power Settings 418

Using Other Console Commands 419

Enjoying the Emulator 419

Understanding Emulator Limitations 420

References and More Information 421

Appendix B The Android DDMS Quick-Start Guide 423

Using DDMS with Eclipse and as a Standalone Application 423

Getting Up to Speed Using Key Features of DDMS 424

Working with Processes, Threads, and the Heap 425

Attaching a Debugger to an Android Application 425

Stopping a Process 426

Monitoring Thread Activity of an Android Application 426

Monitoring Heap Activity 427

Prompting Garbage Collection 428

Creating and Using an HPROF File 429

Using the Allocation Tracker 430

Working with the File Explorer 430

Browsing the File System of an Emulator or Device 432

Copying Files from the Emulator or Device 432

Copying Files to the Emulator or Device 433

Deleting Files on the Emulator or Device 433

Working with the Emulator Control 434

Simulating Incoming Voice Calls 434

Simulating Incoming SMS Messages 434

Sending a Location Fix 435

Taking Screen Captures of the Emulator and Device Screens 435

Working with Application Logging 436

Appendix C Eclipse IDE Tips and Tricks 439

Organizing Your Eclipse Workspace 439

Integrating with Source Control Services 439

Repositioning Tabs within Perspectives 440

Maximizing Windows 440

Minimizing Windows 440

Viewing Windows, Side by Side 440

Viewing Two Sections of the Same File 441

Closing Unwanted Tabs 441

Keeping Windows Under Control 441

Creating Custom Log Filters 441

Searching Your Project 442

Organizing Eclipse Tasks 442

Writing Code in Java 443

Using Autocomplete 443

Creating New Classes and Methods 443

Organizing Imports 443

Formatting Code 444

Renaming Almost Anything 444

Refactoring Code 444

Reorganizing Code 446

Using QuickFix 446

Providing Javadoc-Style Documentation 446

Resolving Mysterious Build Errors 447

Index 449

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