Android Apps for Absolute Beginners
von: Wallace Jackson
Apress, 2011
ISBN: 9781430234470
Sprache: Englisch
339 Seiten, Download: 18373 KB
Format: PDF, auch als Online-Lesen
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| Title Page | 2 | ||
| Copyright Page | 3 | ||
| Contents at a Glance | 5 | ||
| Table of Contents | 6 | ||
| About the Author | 11 | ||
| About the Technical Reviewer | 12 | ||
| Acknowledgments | 13 | ||
| Introduction | 14 | ||
| The Target: The Programming Neophyte | 14 | ||
| The Weapon: Android, the Innovative Mobile Code Environment | 14 | ||
| How This Book Is Organized | 15 | ||
| The Formula for Success | 15 | ||
| Required Software, Materials, and Equipment | 16 | ||
| Operating System and IDE | 16 | ||
| Software Development Kits | 17 | ||
| Dual Monitors | 17 | ||
| Chapter 1: Preliminary Information: Before We Get Started | 18 | ||
| Some History: What Is Android? | 19 | ||
| Advantage Android: How Can Android Benefit Me? | 20 | ||
| The Scope of This Book | 21 | ||
| What's Covered | 21 | ||
| What's Not Covered | 22 | ||
| Preparing for Liftoff: SDK Tools to Download | 22 | ||
| Java | 23 | ||
| Eclipse | 24 | ||
| Android SDK | 25 | ||
| Summary | 25 | ||
| Chapter 2: What's Next? Our Road Ahead | 27 | ||
| Your Android Development IDE | 27 | ||
| Java, XML, and How Android Works | 29 | ||
| The Android Application Framework | 30 | ||
| Screen Layout Design | 30 | ||
| User Interface Design | 31 | ||
| Graphics and Animation Design | 31 | ||
| Interactivity | 32 | ||
| Content Providers | 32 | ||
| Intents and Intent Filters | 33 | ||
| The Future of Android | 33 | ||
| Summary | 34 | ||
| Chapter 3: SeHing Up Your Android Development Environment | 35 | ||
| Installing Java, Eclipse, and Android | 35 | ||
| Java SE and JRE: Your Foundation for Application Development.. | 36 | ||
| Eclipse IDE: The Development Environment | 37 | ||
| Android SDK: The Android Tool Kit for Eclipse | 41 | ||
| Android Development Tool: Android Tools for Eclipse | 42 | ||
| The Android Environment Within Eclipse | 46 | ||
| Updating the Android SDK | 47 | ||
| Setting Up AVDs and Smartphone Connections | 49 | ||
| AVDs: Smartphone Emulators | 49 | ||
| USB Smartphone Drivers: External Devices | 51 | ||
| Developing on 64-Bit Computing Platforms | 52 | ||
| Summary | 54 | ||
| Chapter 4: Introducing the Android Software Development Platform | 56 | ||
| Understanding Java SE and the Dalvik Virtual Machine | 57 | ||
| The Directory Structure of an Android Project | 58 | ||
| Common Default Resources Folders | 59 | ||
| The Values Folder | 60 | ||
| Leveraging Android XML (Your Secret Weapon) | 61 | ||
| Screen Sizes | 62 | ||
| Desktop Clocks | 62 | ||
| Using Your Android Application Resources | 63 | ||
| Bitmap Images | 63 | ||
| Alternate Resource Folders | 64 | ||
| Launching Your Application: The AndroidManifest.xml File | 65 | ||
| Creating Your First Android Application | 66 | ||
| Launching Eclipse | 66 | ||
| Creating an Android Project | 67 | ||
| Inspecting and Editing the Application Files | 70 | ||
| Opening the MyHelloWorld Activity | 71 | ||
| Opening the UI Definition | 72 | ||
| Opening the Strings Resource File | 73 | ||
| Setting a Variable Value in strings.xml | 74 | ||
| Running the App | 75 | ||
| Adding an Application Icon | 76 | ||
| Adding Transparency | 77 | ||
| Creating the Icons | 78 | ||
| Summary | 80 | ||
| Chapter 5: Android Framework Overview | 82 | ||
| The Foundation of OOP: The Object | 83 | ||
| Some OOP Terminology | 84 | ||
| The Blueprint for an Object: The Class | 85 | ||
| Providing Structure for Your Classes: Inheritance | 90 | ||
| Defining an Interface | 91 | ||
| Bundling Classes in a Logical Way: The Package | 92 | ||
| An Overview of XML | 93 | ||
| The Anatomy of an Android Application: The APK File | 94 | ||
| Android Application Components | 95 | ||
| Android Activities: Defining the UI | 96 | ||
| Android Services: Processing in the Background | 97 | ||
| Broadcast Receivers: Announcements and Notifications | 97 | ||
| Content Providers: Data Management | 98 | ||
| Android Intent Objects: Messaging for Components | 99 | ||
| Android Manifest XML: Declaring Your Components | 100 | ||
| Summary | 102 | ||
| Chapter 6: Screen Layout Design: Views and Layouts | 104 | ||
| Android View Hierarchies | 104 | ||
| Using the View Class | 105 | ||
| Nesting Views: Using the ViewGroup Class | 105 | ||
| Defining Screen Layouts: Using XML | 107 | ||
| Setting Up for Your Screen Layout | 107 | ||
| Using Linear Layouts | 108 | ||
| Creating the LinearLayouts Project in Eclipse | 110 | ||
| Editing the main.xml File | 113 | ||
| Editing the strings.xml File | 114 | ||
| Updating main.xml File | 115 | ||
| Viewing LinearLayoutActivity.java | 116 | ||
| Running the LinearLayout App | 117 | ||
| Using Relative Layouts | 119 | ||
| Sliding Drawers: Expanding Your UI | 123 | ||
| Using Padding and Margins with Views and Layouts | 126 | ||
| Setting Padding in Views | 127 | ||
| Setting Margins in ViewGroups | 127 | ||
| Summary | 127 | ||
| Chapter 7: UI Design: Buttons, Menus, and Dialogs | 129 | ||
| Using Common UI Elements | 129 | ||
| Adding an Image Button to Your Layout | 130 | ||
| Defining Multistate Image Button Graphics in XML | 130 | ||
| Creating the UI Image Button Project in Eclipse | 131 | ||
| Creating the button1.xml File | 133 | ||
| Editing the main.xml File | 137 | ||
| Replacing the Default Background | 138 | ||
| Adding a Text to Your Layout | 140 | ||
| Adding an Image | 141 | ||
| Using Menus in Android | 143 | ||
| Creating the Menu Structure with XML | 144 | ||
| Defining Menu Item Strings | 145 | ||
| Inflating the Menu Structure via Java | 148 | ||
| Running the Application in the Android Emulator | 150 | ||
| Making the Menu Work | 150 | ||
| Adding Dialogs | 154 | ||
| Using Custom Dialog Subclasses | 154 | ||
| Displaying an Alert Dialog | 154 | ||
| Summary | 159 | ||
| Chapter 8: An Introduction to Graphics Resources in Android | 160 | ||
| Introducing the Drawables | 161 | ||
| Implementing Images | 161 | ||
| Core Drawable Subclasses | 162 | ||
| Using Bitmap Images in Android | 162 | ||
| PNG Images | 163 | ||
| JPEG and GIF Images | 164 | ||
| Creating Animation in Android | 164 | ||
| Frame-based or Cel 2D Animation | 164 | ||
| Controlling Frame-based Animation via Java | 168 | ||
| Running the Frame-based Animation App in the Emulator | 172 | ||
| Tween Animation in Android | 173 | ||
| Creating the text_animation.xml File | 174 | ||
| Controlling Tween Animation via Java | 177 | ||
| Using Transitions | 179 | ||
| Creating 9-Patch Custom Scalable Images | 183 | ||
| Playing Video in Your Android Apps | 189 | ||
| Adding a VideoView Object | 189 | ||
| Adding the Java for Video | 191 | ||
| Summary | 194 | ||
| Chapter 9: Adding Interactivity: Handling UI Events | 195 | ||
| An Overview of UI Events in Android | 195 | ||
| Listening for and Handling Events | 195 | ||
| Handling UI Events via the View Class | 196 | ||
| Event Callback Methods | 196 | ||
| Handling onClick Events | 197 | ||
| Implementing an onClick Listener for a UI Element.. | 198 | ||
| Adding an on Click Listener to an Activity in Android | 199 | ||
| Creating the Event Handling Examples Project in Eclipse | 199 | ||
| Editing the HandlerExamples.java File | 200 | ||
| Editing the main.xml File | 204 | ||
| Updating HandlerExamples.java | 205 | ||
| Running the Event Handling Examples App in the Emulator | 206 | ||
| Android Touchscreen Events: onTouch | 207 | ||
| Touchscreen's Right-Click Equivalent: onLongClick | 207 | ||
| Keyboard Event Listeners: onKeyUp and onKeyDown | 210 | ||
| Adding the XML for Keyboard Events | 211 | ||
| Adding the Java for Keyboard Events | 211 | ||
| Context Menus in Android: onCreateContextMenu | 214 | ||
| Adding the XML for Context Menus | 214 | ||
| Adding the Java for Context Menus | 216 | ||
| Controlling the Focus in Android | 221 | ||
| Adding the XML for Focus Control | 222 | ||
| Adding the Java for Focus Control | 226 | ||
| Setting Focus Availability | 228 | ||
| Summary | 228 | ||
| Chapter 10: Understanding Content Providers | 229 | ||
| An Overview of Android Content Providers | 229 | ||
| Databases and Database Management Systems | 230 | ||
| Android Built-in Content Providers | 231 | ||
| Contacts Database Contact Providers | 232 | ||
| Android MediaStore Content Providers | 234 | ||
| Defining a Content Provider | 234 | ||
| Creating the Content Providers Example Project in Eclipse | 235 | ||
| Defining Security Permissions | 236 | ||
| Adding Data to the Contacts Database | 240 | ||
| Working with a Database | 243 | ||
| Querying a Content Provider: Accessing the Content | 243 | ||
| Appending to a Content Provider: Adding New Content | 249 | ||
| Modifying Content Provider Data: Updating the Content | 255 | ||
| Removing Content Provider Data: Deleting Content | 260 | ||
| Summary | 265 | ||
| Chapter 11: Understanding Intents and Intent Filters | 267 | ||
| What Is an Intent? | 267 | ||
| Android Intent Messaging via Intent Objects | 268 | ||
| Intent Resolution: Implicit Intents & Explicit Intents | 271 | ||
| Explicit Intents | 271 | ||
| Implicit Intents | 272 | ||
| Using Intents with Activities | 273 | ||
| Writing the Digital Clock Activity | 278 | ||
| Wiring up the Application | 281 | ||
| Sending Intents | 283 | ||
| Android Services: Data Processing in its own Class | 286 | ||
| Using Intents with Services | 286 | ||
| Creating a Service | 289 | ||
| Implementing Our MediaPlayer Functions | 293 | ||
| Wiring the Buttons to the Service | 294 | ||
| Running the Application | 295 | ||
| Using Intents with Broadcast Receivers | 296 | ||
| Creating the Timer User Interface via XML | 297 | ||
| Creating a Timer Broadcast Receiver | 298 | ||
| Configuring the AndroidManifest.xml file |
300 | ||
| Implementing our Intent | 301 | ||
| Running the Timer Application via the Android 1.5 Emulator | 306 | ||
| Summary | 307 | ||
| Chapter 12: The Future | 308 | ||
| Widgets: Creating Your Own Widgets in Android | 308 | ||
| Location-Based Services in Android | 310 | ||
| Google Maps in Android | 311 | ||
| Google Search in Android | 314 | ||
| Data Storage in Android | 315 | ||
| Shared Preferences | 315 | ||
| Internal Memory | 316 | ||
| External Memory | 316 | ||
| Using SaUte | 317 | ||
| Device Administration: Security for IT Deployments | 317 | ||
| Using the Android Camera Class to control a Camera | 318 | ||
| 3D Graphics: Using OpenGL ES 1.x in Android | 318 | ||
| FaceDetector | 319 | ||
| Sound Pool | 319 | ||
| MediaRecorder | 320 | ||
| Summary | 321 | ||
| Index | 322 |