a0041 apress beginning android tablet programming nov 201 morebook vn 5726

Beginning Android Tablet Programming Starting with Android Honeycomb for Tablets „ „ „ Robbie Matthews... Beginning Android Tablet Programming: Starting with Android Honeyco

Beginning Android Tablet

Programming

Starting with Android Honeycomb for Tablets























„ „ „

Robbie Matthews

Beginning Android Tablet Programming: Starting with Android Honeycomb for Tablets

Copyright © 2011 by Robbie Matthews

All rights reserved No part of this work may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or by any information storage or retrieval system, without the prior written permission of the copyright owner and the publisher

ISBN-13 (pbk): 978-1-4302-3783-9

ISBN-13 (electronic): 978-1-4302-3784-6

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to proprietary rights

President and Publisher: Paul Manning

Lead Editor: Steve Anglin and Tom Welsh

Technical Reviewer: Stephen Bull and Peter Brownlow

Editorial Board: Steve Anglin, Mark Beckner, Ewan Buckingham, Gary Cornell, Morgan Engel, Jonathan Gennick, Jonathan Hassell, Robert Hutchinson, Michelle Lowman, James Markham, Matthew Moodie, Jeff Olson, Jeffrey Pepper, Douglas Pundick, Ben Renow-Clarke, Dominic Shakeshaft, Gwenan Spearing, Matt Wade, Tom Welsh

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Copy Editor: Mary Ann Fugate

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The source code for this book is available to readers at www.apress.com You will need to answer questions pertaining to this book in order to successfully download the code

I dedicate this book to my family Without your support and occasional nagging

this book would never have been finished

Robbie Matthews

iv

Contents at a Glance

„ About the Author xiv

„ About the Technical Reviewer xv

„ Acknowledgments xvi

„ Some Notes on Using the Downloaded Code xvii

„ Chapter 1: Getting Started 1

„ Chapter 2: How Android Works 27

„ Chapter 3: What Can You Do with an Android Tablet? 53

„ Chapter 4: Beyond Java: Programming in Python and Friends 79

„ Chapter 5: Project 1: Media Player 105

„ Chapter 6: Explorer 123

„ Chapter 7: Contact Manager 151

„ Chapter 8: Dude, Where’s My Car? 175

„ Chapter 10: Remind Me 221

„ Chapter 11: Everything Else 243

„ Index 269

„ INDEX

273

Reflection, 133, 137

remapCoordinateSystem, 62

Remind Me, 221

Alarms

List Manager, 237, 238

manipulating Alarms Table, 239

contacts, 233, 234

enhancing the application, 241

main screen, 231, 232

onscreen keyboard, 232, 233

responding to Alarm, 235–237

setting Reminder Alarm, 234, 235

testing TTS, 240, 241

Runnable, 244

„ S

savedInstanceState, 33

scaledDensity, 155

Scripting Layer for Android (SL4A), 79, 80

See also Script management

Script management, 80

battery management, 97–99

contacts and phone numbers, 102–

103

control phone settings, 94–95

editing, 100–101

events, 89–90

Facades, 82–83

hello_world script, 81

Intent, 83–86

location function, 95–97

media files, 91–94

Prompt, and Help, 82

Python help system, 82

sample programs, 81

SQL, 103

user interaction, 86–88

WakeLock commands, 99–100

SeekBar, 121, 122

SENSOR_DELAY_NORMAL, 59

Sensors

accessing SensorManager, 56

Button Click Events, 60

getting orientation, 61–62

onListClick Event, 56

Portrait Mode, 61

screen layout, 54–55

SensorEventListener, 58

testing, 55

types, 54 Values, 60–61 Services, 187–188 Share My Stuff, 75–77 SharedPreferences, 41 shouldOverrideUrlLoading, 69 SimpleCursorAdapter, 114 SMS

receiving, 224 sending, 223–224 SmsManager, 223 SmsReceiver, 225 SQLite

creating database, 228 definition, 227 getting database, 229 using database, 229, 230 SQLite3, 104

SQLiteOpenHelper, 228 startActivityForResult, 64

static member, 14, 15

staticVariable, 15, 17 StringBuffer and StringBuilder, 21 SurfaceHolder, 121, 204–207 swapCursor, 120

„ T

Target code for ManageList, 195–196 edit dialog, 196–197

TableLayout, 194–195 Target class, 193–194 target editor, 196 TextPaint, 155 Text To Speech (TTS) queues, 227 SMSReceiveService Class, 225–226 TextView, 32

Threads Android Threads, 203 concepts of, 199 Java Threads, 200–203 Three dimensional graphics BA3TPOpenGl, 214 GLSurfaceView implementation, 215 initializing 3D environment, 216,

217 interprocess communication, 219,

220

„ INDEX

274

Three dimensional graphics (cont.)

MainActivity for 3D demo, 216

MainActivity onCreate event, 219

onDrawFrame event, 218

onSurfaceChanged event, 218

onSurfaceCreated event, 217

spinning box, 214

TickerText, 188

Timers, 243

Handler, 244

Handler.postAtTime with token,

246

Handler.PostDelayed, 245

implementing real-time clock, 245,

246

stopping gracefully, 246

Toast, 34

toString(), 24

Touch Events, 209

TreeMap IdentityHashMap, 22

Tricorder, 54

„ U

Uri.withAppendedPath, 117 USB, 262

device filter, 266

in action, 267 list of devices, 263–264 responding to a plugged device, 266 responding to an unplugged device, 265–266 simple activity, 263

Thread to read from, 265

„ V

varargs, 248

„ W, X, Y, Z

Wakeup Calls, 186 WeakHashMap, 23