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Android Application Development: Programming with the Google SDK

24 de junio de 2018 | 21:24

This practical book provides the concepts and code you need to develop software with Android, the open-source platform for cell phones and mobile devices that's generating enthusiasm across the industry. Based on the Linux operating system and developed by Google and the Open Handset Alliance, Android has the potential to unite a fragmented mobile market. Android Application Development introduces this programming environment and offers you a complete working example that demonstrates Android architectural features and APIs. with this book, you will:

Get a complete introduction to the Android programming environment, architecture and tools
Build a modular application, beginning with a core module that serves to launch modules added in subsequent chapters
Learn the concepts and architecture of a specific feature set, including views, maps, location-based services, persistent data storage, 2D and 3D graphics, media services, telephony services and messaging
Use ready-to-run example code that implements each feature
Delve into advanced topics, such as security, custom views, performance analysis and internationalization

The book is a natural complement to the existing Android documentation provided by Google. Whether you want to develop a commercial application for mobile devices, or just want to create a mobile mashup for personal use, Android Application Development demonstrates how you can design, build and test applications for the new mobile market.

Part I. Development Kit Walk-Through
1. Getting to Know Android . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
  Why Android? 3
  The Open Handset Alliance 4
  The Android Execution Environment 5
  Components of an Android Application 6
  Android Activity Lifecycle 8
  Android Service Lifecycle 10
  How This Book Fits Together 10
2. Setting Up Your Android Development Environment . . . . . . . . . . . . . . . . . . . . . . . . . 13
  Setting Up Your Development Environment 13
    Creating an Android Development Environment 14
  Hello, Android 18
    Where We’re Going 18
    Starting a New Android Application: HelloWorld 18
    Writing HelloWorld 22
    Running HelloWorld 24
3. Using the Android Development Environment for Real Applications . . . . . . . . . . . . 27
  MicroJobs: This Book’s Main Sample Application 27
  Android and Social Networking 27
  Downloading the MJAndroid Code 30
  A Brief Tour of the MJAndroid Code 30
    The Project Root Folder (MJAndroid) 30
    The Source Folder (src) 31
    The Resource Folder (res) 32
  First Steps: Building and Running the MicroJobs Application 33
    A Very Short Tour of the Android SDK/Eclipse IDE 33
    Loading and Starting the Application 35
    Digging a Little Deeper: What Can Go Wrong? 36
    Running an Application on the T-Mobile Phone 39
  Summary 41
4. Under the Covers: Startup Code and Resources in the MJAndroid Application . . . . 43
  Initialization Parameters in AndroidManifest.xml 44
  Initialization in MicroJobs.java 46
    More Initialization of MicroJobs.java 52
  Summary 56
5. Debugging Android Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
  The Tools 57
  Eclipse Java Editor 58
    Java Errors 58
    The Debugger 64
    Logcat 67
    Android Debug Bridge (adb) 71
    DDMS: Dalvik Debug Monitor Service 74
    Traceview 75
  Summary 80
6. The ApiDemos Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
  Application Setup in the Manifest File 81
  Finding the Source to an Interesting Example 83
    Custom Title Demo 83
    Linkify Demo 84
  Adding Your Own Examples to ApiDemos 84
7. Signing and Publishing Your Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
  Test Your Application 88
  Attach an End User License Agreement If Desired 89
  Create and Attach an Icon and Label 89
  Clean Up for Release 90
  Version Your Application 90
  Obtaining a Signing Certificate and API Key 90
    Getting a Signing Certificate for an Application You Are Going to Ship 91
    Getting a Signing Certificate While Debugging 93
  Signing Your Application 95
  Retesting Your Application 96
  Publishing on Android Market 96
    Signing Up As an Android Developer 96
Part II. Programming Topics
8. Persistent Data Storage: SQLite Databases and Content Providers . . . . . . . . . . . . . 101
  Databases 101
    Basic Structure of the MicroJobsDatabase Class 102
    Reading Data from the Database 107
    Modifying the Database 110
  Content Providers 114
    Introducing NotePad 116
    Content Providers 118
    Consuming a Content Provider 129
9. Location and Mapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137
  Location-Based Services 137
  Mapping 139
  The Google Maps Activity 139
  The MapView and MapActivity 140
  Working with MapViews 140
    MapView and MyLocationOverlay Initialization 141
    Pausing and Resuming a MapActivity 144
    Controlling the Map with Menu Buttons 145
    Controlling the Map with the KeyPad 147
  Location Without Maps 148
    The Manifest and Layout Files 148
    Connecting to a Location Provider and Getting Location Updates 149
    Updating the Emulated Location 152
10. Building a View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
  Android GUI Architecture 157
    The Model 157
    The View 158
    The Controller 159
    Putting It Together 159
  Assembling a Graphical Interface 161
  Wiring Up the Controller 166
    Listening to the Model 168
    Listening for Touch Events 173
    Listening for Key Events 176
    Alternative Ways to Handle Events 177
    Advanced Wiring: Focus and Threading 179
  The Menu 183
11. A Widget Bestiary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187
  Android Views 188
    TextView and EditText 188
    Button and ImageButton 191
    Adapters and AdapterViews 192
    CheckBoxes, RadioButtons, and Spinners 193
  ViewGroups 198
    Gallery and GridView 198
    ListView and ListActivity 202
    ScrollView 204
    TabHost 205
  Layouts 208
    Frame Layout 209
    LinearLayout 209
    TableLayout 213
    AbsoluteLayout 215
    RelativeLayout 216
12. Drawing 2D and 3D Graphics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 221
  Rolling Your Own Widgets 221
    Layout 222
    Canvas Drawing 226
    Drawables 237
    Bitmaps 242
  Bling 243
    Shadows, Gradients, and Filters 246
    Animation 247
    OpenGL Graphics 252
13. Inter-Process Communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 257
  Intents: Simple, Low-Overhead IPC 258
    Intent Objects Used in Inter-Process Communication 258
    Activity Objects and Navigating the User Interface Hierarchy 259
    Example: An Intent to Pick How We Say “Hello World” 259
    Getting a Result via Inter-Process Communication 262
  Remote Methods and AIDL 265
    Android Interface Definition Language 266
    Classes Underlying AIDL-Generated Interfaces 270
    Publishing an Interface 273
    Android IPC Compared with Java Native Interface (JNI) 274
    What Binder Doesn’t Do 275
    Binder and Linux 27514. Simple Phone Calls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 277  Quick and Easy Phone Calls 277
    Creating an Example Application to Run the call Method 278
    Embedding the Code Snippet in a Simple Application 279
  Exploring the Phone Code Through the Debugger 280
    Creating an Instance of an Intent 282
    Adding Data to an Instance of an Intent 283
    Initiating a Phone Call 284
  Exception Handling 284
  Android Application-Level Modularity and Telephony 285
15. Telephony State Information and Android Telephony Classes . . . . . . . . . . . . . . . . 287  Operations Offered by the android.telephony Package 287
    Package Summary 288
    Limitations on What Applications Can Do with the Phone 288
    Example: Determining the State of a Call 289
  Android Telephony Internals 291
    Inter-Process Communication and AIDL in the
    android.internal.telephony Package 291
    The android.internal.telephony Package 292
    The android.internal.telephony.gsm Package 295
    Exploring Android Telephony Internals 299
  Android and VoIP 302
Appendix: Wireless Protocols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 305





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Android Application Development: Programming with the Google SDK
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