Busy coder guide android development pdf

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The Busy Coder’s Guide to Android Development 8.10 Mark L. Murphy [2018, En]
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Do you want current information about how to develop Android apps? This book covers the latest Android Studio version and the latest version of Android, plus all the information you need to get your apps working on older devices. And, with updates coming every couple of months via the Warescription, you will keep up to date.

Do you want comprehensive information about how to develop Android apps? This book contains over 200 chapters, covering everything from the first steps in getting an app going to advanced development techniques.

In addition to classic digital book formats (PDF, EPUB, MOBI/Kindle), this book is available as an Android app, in the form of an APK file. This app has an integrated digital book reader, showing you the same contents as you would find in the EPUB version of the book. However, it has a few features that are unique.

First, it has a very fast full-text-search index built in. You can quickly search for keywords, class names, and the like, with sub-second response time on most Android hardware. You can even use boolean search clauses (e.g., search on encryption OR decryption).

Second, it has Community Theater, where you can view appinars, or app-based training modules. These are presentations, complete with slides, videos, screencasts, source code, and more. Through Community Theater, you can view available appinars, download those of interest, and watch them when you want.

The APK edition of the book reader works on Android 4.0.3 and higher, though the Community Theater portion only works on Android 4.4 and higher.

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The Busy Coder’s Guide to Android Development

Do you want comprehensive information about how to develop Android apps? This book contains over 200 chapters, covering everything from the first steps in getting an app going to advanced development techniques. Use the search field in the nav bar to see what is inside this book and the rest of the CommonsWare library!

This book is published in PDF, EPUB, and MOBI/Kindle formats, for use in your favorite digital book reader. Or, read directly in your Web browser on the Warescription site, complete with full-text searching.

The Table of Contents

Each bullet shown below represents a chapter. Use the search field in the nav bar to search all of the CommonsWare books to see what they hold!

Key Android Concepts
Choosing Your Development Toolchain
Tutorial #1 — Installing the Tools
Android and Projects
Tutorial #2 — Creating a Stub Project
Getting Around Android Studio
Contents of Android Projects
Introducing Gradle and the Manifest
Tutorial #3 — Manifest Changes
Some Words About Resources
Icons
Tutorial #4 — Adjusting Our Resources
The Theory of Widgets
The Android User Interface
Basic Widgets
Debugging Your App
The Classic Container Classes
Other Common Widgets and Containers
Tutorial #5 — Creating a Layout
GUI Building, Continued
AdapterViews and Adapters
The WebView Widget
Defining and Using Styles
Dependencies
Tutorial #6 — Adding a Library
Introducing ConstraintLayout
RecyclerView
The Action Bar
Vector Drawables
Tutorial #7 — Setting Up the Action Bar
AndroidвЂ™s Process Model
Activities and Their Lifecycles
Tutorial #8 — Setting Up An Activity
The Tactics of Fragments
Tutorial #9 — Starting Our Fragments
Swiping with ViewPager
Tutorial #10 — Rigging Up a ViewPager
Resource Sets and Configurations
Material Design Basics
Dealing with Threads
Requesting Permissions
Assets, Files, and Data Parsing
Tutorial #11 — Adding Simple Content
Tutorial #12 — Displaying the Book
Using Preferences
Tutorial #13 — Using Some Preferences
SQLite Databases
Tutorial #14 — Saving Notes
Internet Access
Intents, Intent Filters
Broadcasts and Broadcast Receivers
Tutorial #15 — Sharing Your Notes
Services and the Command Pattern
Tutorial #16 — Updating the Book
Tutorial #17 — Supporting Large Screens
Backwards Compatibility Strategies and Tactics
System Services
Google Play Services
Getting Help
Working with Library Modules
Gradle and Tasks
Gradle Build Variants
Manifest Merger Rules
Signing Your App
Distribution
Writing a Gradle Plugin
Code Generation
Advanced Gradle for Android Tips
Testing with JUnit4
Testing with Espresso
Testing with UI Automator
Measuring Test Coverage
Unit Testing
MonkeyRunner and the Test Monkey
Java 8 Lambda Expressions
Rx Basics
Notifications
Advanced Notifications
Multi-Window Support
Advanced ConstraintLayout
GridLayout
Dialogs and DialogFragments
Advanced ListViews
Action Modes
Other Advanced Action Bar Techniques
Toolbar
AppCompat: The Official Action Bar Backport
The Android Design Support Library
Advanced RecyclerView
Advanced Uses of WebView
The Input Method Framework
Fonts and Text
Rich Text
Animators
Legacy Animations
Custom Drawables
Mapping with Maps V2
Crafting Your Own Views
Advanced Preferences
Custom Dialogs and Preferences
Progress Indicators
More Fun with Pagers
Focus Management and Accessibility
Miscellaneous UI Tricks
Event Bus Alternatives
Tasks
The Assist API (вЂњNow On TapвЂќ)
The Autofill API
The Data Binding Framework
Drag and Drop
Keyboard and Mouse Input
Viewing PDFs
Home Screen App Widgets
Adapter-Based App Widgets
Publishing Slices
Hosting Slices
Advanced Permissions
Restricted Profiles and UserManager
Device Authentication
Keys and the Keystore
Miscellaneous Security Techniques
Content Provider Theory
Content Provider Implementation Patterns
The Loader Framework
The ContactsContract and CallLog Providers
The CalendarContract Provider
The MediaStore Provider
Consuming Documents
Providing Documents
Encrypted Storage
Packaging and Distributing Data
Advanced Database Techniques
Data Backup
SSL
NetCipher
Miscellaneous Network Topics
Audio Playback
Audio Recording
Video Playback
Using the Camera via 3rd-Party Apps
Working Directly with the Camera
Media Routes
Supporting External Displays
Google Cast and Chromecast
The вЂњTen-Foot UIвЂќ
Putting the TVs All Together: Decktastic
Creating a MediaRouteProvider
The Media Projection APIs
AlarmManager and the Scheduled Service Pattern
PowerManager and WakeLocks
JobScheduler
Accessing Location-Based Services
The Fused Location Provider
Working with the Clipboard
Telephony
Working With SMS
NFC
Device Administration
Basic Use of Sensors
Printing and Document Generation
Basic Bluetooth RFCOMM
Dealing with Different Hardware
Writing and Using Parcelables
Responding to URLs
App Shortcuts
PackageManager Tricks
Remote Services and the Binding Pattern
Advanced Manifest Tips
Miscellaneous Integration Tips
Android Studio Editors and Dialogs
Advanced Emulator Capabilities
Lint and the Support Annotations
Inspecting Layouts
Screenshots and Screencasts
ADB Tips and Tricks
Stetho
Issues with Speed
Finding CPU Bottlenecks
Focus On: NDK
Improving CPU Performance in Java
Finding and Eliminating Jank
Issues with Bandwidth
Focus On: TrafficStats
Measuring Bandwidth Consumption
Being Smarter About Bandwidth
Issues with Application Heap
Finding Memory Leaks
Issues with System RAM
Issues with Battery Life
Power Measurement Options
Sources of Power Drain
Addressing Application Size Issues
Crash Reporting Using ACRA
In-App Diagnostics
Anti-Patterns
Widget Catalog: AdapterViewFlipper
Widget Catalog: CalendarView
Widget Catalog: DatePicker
Widget Catalog: ExpandableListView
Widget Catalog: SeekBar
Widget Catalog: SlidingPaneLayout
Widget Catalog: StackView
Widget Catalog: TabHost and TabWidget
Widget Catalog: TimePicker
Widget Catalog: ViewFlipper
Device Catalog: Chrome and Chrome OS
Device Catalog: BlackBerry
Device Catalog: Android TV
Device Catalog: Amazon Fire TV and Fire TV Stick
Device Catalog: Samsung DeX
Appendix A: CWAC Libraries
Appendix B: Android 8.0
Appendix C: Android 9.0
Appendix D: Community Theater and the Appinars

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What’s New

Updated coverage for Android 9.0
Added a new chapter on hosting and rendering slices
Added a new section on using ListAdapter (the new one) with RecyclerView
Adds material on Chrome OS tablets, Chromeboxes, and the Samsung DeX Pad

Details

FINAL Version
4,298 pages
Supports Android 9.0 and Android Studio 3.1
Source code
Errata
Four-to-Free Guarantee

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Источник

The Busy Coder’s Guide To Android Development (Final Version)

Iyanla Vanzant, Mark L. Murphy

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Summary of The Busy Coder’s Guide To Android Development (Final Version)

The Busy Coder’s Guide to Android Development by Mark L. Murphy

The Busy Coder’s Guide to Android Development by Mark L. Murphy Copyright © 2008-2019 CommonsWare, LLC. All Rights Reserved. Printed in the United States of America. Printing History: February 2019 FINAL Version ISBN: 978-0-9816780-0-9 The CommonsWare name and logo, “Busy Coder’s Guide”, and related trade dress are trademarks of CommonsWare, LLC. All other trademarks referenced in this book are trademarks of their respective frms. The publisher and author(s) assume no responsibility for errors or omissions or for damages resulting from the use of the information contained herein.

Table of Contents Headings formatted in bold-italic have changed since the last version. • Preface ◦ Welcome to the Book! . xliii ◦ First-Generation Book . xliii ◦ The Book’s Structure . xliv ◦ The Trails . xlv ◦ About the Updates . l ◦ About the APK Edition . l ◦ Source Code and Its License . li ◦ Creative Commons and the Four-to-Free (42F) Guarantee . li ◦ Acknowledgments . lii • Key Android Concepts ◦ Android Applications . 1 ◦ Android Devices . 6 ◦ Don’t Be Scared . 10 • Choosing Your Development Toolchain ◦ Android Studio . 11 ◦ Eclipse . 11 ◦ IntelliJ IDEA . 12 ◦ Command-Line Builds via Gradle . 12 ◦ Yet Other Alternatives . 12 ◦ IDEs… And This Book . 13 ◦ What We Are Not Covering . 13 • Tutorial #1 — Installing the Tools ◦ But First, Some Notes About Android’s Emulator . 15 ◦ Step #1: Checking Your Hardware . 16 ◦ Step #2: Setting Up Java and 32-Bit Linux Support . 17 ◦ Step #3: Install Android Studio . 18 ◦ Step #4: Install the SDKs and Add-Ons . 19 ◦ In Our Next Episode… . 27 • Android and Projects ◦ Projects and Android Studio . 29 • Tutorial #2 — Creating a Stub Project ◦ About Our Tutorial Project . 37 ◦ About the Rest of the Tutorials . 38 ◦ About Our Tools . 38 i

◦ Step #1: Importing the Project . 38 ◦ Step #2: Get Ready for the x86 Emulator . 43 ◦ Step #3: Set Up the AVD . 44 ◦ Step #4: Set Up the Device . 51 ◦ Step #5: Running the Project . 56 ◦ In Our Next Episode… . 58 • Getting Around Android Studio ◦ Navigating The Project Explorer . 59 ◦ Running Projects . 62 ◦ Viewing Output . 63 ◦ Accessing Android Tools . 65 ◦ Android Studio and Release Channels . 66 ◦ Visit the Trails! . 68 • Contents of Android Projects ◦ What You Get, In General . 69 ◦ More About the Directory Structure . 72 ◦ What You Get Out Of It . 74 • Introducing Gradle and the Manifest ◦ Gradle: The Big Questions . 75 ◦ Obtaining Gradle . 77 ◦ Versions of Gradle and the Android Gradle Plugin . 79 ◦ Gradle Environment Variables . 80 ◦ Examining the Gradle Files . 80 ◦ Introducing the Manifest . 83 ◦ Things In Common Between the Manifest and Gradle . 84 ◦ Other Gradle Items of Note . 86 ◦ Where’s the GUI? . 87 ◦ The Rest of the Manifest . 87 ◦ Learning More About Gradle . 89 ◦ Visit the Trails! . 90 • Tutorial #3 — Manifest Changes ◦ Some Notes About Relative Paths . 91 ◦ Step #1: Supporting Screens . 91 ◦ Step #2: Blocking Backups . 92 ◦ Step #3: Ignoring Lint . 92 ◦ In Our Next Episode… . 94 • Some Words About Resources ◦ String Theory . 95 ◦ Got the Picture? . 102 ◦ Dimensions . 105 ◦ The Resource That Shall Not Be Named… Yet . 107 ii

• Icons ◦ App Icons… And Everything Else . 109 ◦ Creating an App Icon with the Asset Studio . 110 ◦ Creating Other Icons with the Asset Studio . 116 • Tutorial #4 — Adjusting Our Resources ◦ Step #1: Changing the Name . 117 ◦ Step #2: Changing the Icon . 118 ◦ Step #3: Running the Result . 123 ◦ In Our Next Episode… . 123 • The Theory of Widgets ◦ What Are Widgets? . 125 ◦ Size, Margins, and Padding . 127 ◦ What Are Containers? . 127 ◦ The Absolute Positioning Anti-Pattern . 128 ◦ The Theme of This Section: Themes . 129 • The Android User Interface ◦ The Activity . 135 ◦ Dissecting the Activity . 136 ◦ Using XML-Based Layouts . 137 • Basic Widgets ◦ Common Concepts . 141 ◦ Introducing the Graphical Layout Editor . 144 ◦ And Now, Some Notes About the Book’s Sample Projects . 153 ◦ Assigning Labels . 154 ◦ A Commanding Button . 159 ◦ Fleeting Images . 162 ◦ Fields of Green. Or Other Colors. . 168 ◦ More Common Concepts . 171 ◦ Visit the Trails! . 174 • Debugging Your App ◦ Get Thee To a Stack Trace . 176 ◦ The Case of the Confounding Class Cast . 177 ◦ Point Break . 178 • The Classic Container Classes ◦ Introducing the Sampler App . 179 ◦ RTL and Your Layouts . 180 ◦ LinearLayout and the Box Model . 181 ◦ All Things Are Relative . 207 ◦ Tabula Rasa . 217 ◦ Hey, What About ConstraintLayout? . 223 ◦ Turning Back to RTL . 224 iii

• Other Common Widgets and Containers ◦ Just a Box to Check . 227 ◦ Don’t Like Checkboxes? How About Toggles or Switches? . 231 ◦ Turn the Radio Up . 235 ◦ Scrollwork . 238 ◦ Making Progress with ProgressBars . 242 ◦ Framing the Scene . 242 ◦ Visit the Trails! . 243 • Tutorial #5 — Creating a Layout ◦ Step #1: Creating a New Layout Resource . 245 ◦ Step #2: Defning the UI . 246 ◦ In Our Next Episode… . 250 • GUI Building, Continued ◦ Making Your Selection . 252 ◦ Including Includes . 252 ◦ Preview of Coming Attractions . 254 • AdapterViews and Adapters ◦ Adapting to the Circumstances . 256 ◦ Lists of Naughty and Nice . 257 ◦ Clicks versus Selections . 260 ◦ Spin Control . 263 ◦ Grid Your Lions (Or Something Like That…) . 267 ◦ Fields: Now With 35% Less Typing! . 272 ◦ Customizing the Adapter . 277 ◦ Visit the Trails! . 285 • The WebView Widget ◦ Role of WebView . 287 ◦ Daddy, Where Do WebViews Come From? . 288 ◦ Adding the Widget . 288 ◦ Loading Content Via a URL . 289 ◦ Links and Redirects . 291 ◦ Supporting JavaScript . 291 ◦ Alternatives for Loading Content . 292 ◦ Listening for Events . 293 ◦ Addressing the Link/Redirect Behavior . 296 ◦ Opting Out of Google Monitoring . 298 ◦ Visit the Trails! . 299 • Defning and Using Styles ◦ Styles: DIY DRY . 301 ◦ Elements of Style . 303 ◦ Themes: Would a Style By Any Other Name… . 306 iv

◦ What Happens If You Have No Theme . 306 ◦ Android Studio’s Theme Editor . 307 • Dependencies ◦ What’s a Dependency? . 313 ◦ Dependency Scopes . 314 ◦ Depending on a Local JAR . 315 ◦ What’s an Artifact? . 316 ◦ Artifacts and Repositories . 316 ◦ Major Library Families from Google . 316 ◦ Requesting Dependencies . 317 ◦ The Android Support Library . 320 • Tutorial #6 — Adding a Library ◦ Step #1: Getting Rid of Existing Cruft . 325 ◦ Step #2: Requesting New Dependencies . 326 ◦ In Our Next Episode… . 328 • Introducing ConstraintLayout ◦ Why Another Container? . 329 ◦ Comparing with the Classics . 331 ◦ Getting ConstraintLayout . 331 ◦ Using Widgets and Containers from Libraries . 332 ◦ Using a ConstraintLayout . 332 ◦ Converting Existing Layouts . 346 ◦ Visit the Trails! . 348 • RecyclerView ◦ AdapterView and its Discontents . 349 ◦ Enter RecyclerView . 350 ◦ A Trivial List . 351 ◦ Divider Options . 359 ◦ Handling Click Events . 366 ◦ Visit the Trails! . 373 • The Action Bar ◦ Bar Hopping . 375 ◦ Yet Another History Lesson . 382 ◦ Your Action Bar Options . 382 ◦ Setting the Target . 384 ◦ Defning the Resource . 386 ◦ Applying the Resource . 388 ◦ Responding to Events . 388 ◦ The Rest of the Sample Activity . 389 ◦ MENU Key, We Hardly Knew Ye . 396 ◦ Action Bars, Live in Living Color! . 397 v

◦ Visit the Trails! . 407 • Vector Drawables ◦ Getting the Artwork . 409 ◦ VectorDrawableCompat . 414 • Tutorial #7 — Setting Up the Action Bar ◦ Step #1: Adding Some Icons . 421 ◦ Step #2: Defning Some Options . 423 ◦ Step #3: Loading and Responding to Our Options . 426 ◦ Step #4: Supporting Older Devices . 427 ◦ Step #5: Trying It Out . 429 ◦ In Our Next Episode… . 430 • Android’s Process Model ◦ When Processes Are Created . 431 ◦ BACK, HOME, and Your Process . 432 ◦ Termination . 433 ◦ Foreground Means “I Love You” . 434 ◦ You and Your Heap . 434 • Activities and Their Lifecycles ◦ Creating Your Second (and Third and…) Activity . 436 ◦ Warning! Contains Explicit Intents! . 440 ◦ Using Implicit Intents . 442 ◦ Extra! Extra! . 448 ◦ Pondering Parcelable . 450 ◦ Asynchronicity and Results . 451 ◦ Schroedinger’s Activity . 451 ◦ Life, Death, and Your Activity . 452 ◦ When Activities Die . 454 ◦ Walking Through the Lifecycle . 455 ◦ Recycling Activities . 458 ◦ Application: Transcending the Activity . 459 ◦ The Case of the Invisible Activity . 460 • Tutorial #8 — Setting Up An Activity ◦ Step #1: Creating the Stub Activity Class and Manifest Entry . 463 ◦ Step #2: Launching Our Activity . 465 ◦ In Our Next Episode… . 466 • The Tactics of Fragments ◦ The Six Questions . 467 ◦ Where You Get Your Fragments From . 470 ◦ Your First Fragment . 471 ◦ The Fragment Lifecycle Methods . 475 ◦ Your First Dynamic Fragment . 477 vi

◦ Fragments and the Action Bar . 480 • Tutorial #9 — Starting Our Fragments ◦ Step #1: Create a SimpleContentFragment . 483 ◦ Step #2: Examining SimpleContentFragment . 485 ◦ In Our Next Episode… . 486 • Swiping with ViewPager ◦ Pieces of a Pager . 487 ◦ Paging Fragments . 488 ◦ Paging Other Stuf . 493 ◦ Indicators . 494 ◦ Revisiting the Containers Sampler . 497 • Tutorial #10 — Rigging Up a ViewPager ◦ Step #1: Add a ViewPager to the Layout . 505 ◦ Step #2: Creating a ContentsAdapter . 506 ◦ Step #3: Setting Up the ViewPager . 507 ◦ In Our Next Episode… . 510 • Resource Sets and Confgurations ◦ What’s a Confguration? And How Do They Change? . 511 ◦ Confgurations and Resource Sets . 512 ◦ Screen Size and Orientation . 513 ◦ Coping with Complexity . 516 ◦ Choosing The Right Resource . 517 ◦ API-Versioned Resources . 521 ◦ Default Change Behavior . 523 ◦ State Saving Scenarios . 525 ◦ Your Options for Confguration Changes . 526 ◦ Blocking Rotations . 540 ◦ And Now, a Word From the Android Project View . 541 ◦ Confguration Challenges . 543 • Material Design Basics ◦ Your App, in Technicolor! . 549 • Dealing with Threads ◦ The Main Application Thread . 555 ◦ Getting to the Background . 557 ◦ Asyncing Feeling . 557 ◦ Alternatives to AsyncTask . 567 ◦ And Now, The Caveats . 569 ◦ Event Buses . 569 ◦ Visit the Trails! . 578 • Requesting Permissions ◦ Frequently-Asked Questions About Permissions . 580 vii

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