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Professional Android Sensor Programming

ISBN: 978-1-118-18348-9
552 pages
June 2012
Professional Android Sensor Programming (1118183487) cover image
Learn to build human-interactive Android apps, starting with device sensors

This book shows Android developers how to exploit the rich set of device sensors—locational, physical (temperature, pressure, light, acceleration, etc.), cameras, microphones, and speech recognition—in order to build fully human-interactive Android applications. Whether providing hands-free directions or checking your blood pressure, Professional Android Sensor Programming shows how to turn possibility into reality.

The authors provide techniques that bridge the gap between accessing sensors and putting them to meaningful use in real-world situations. They not only show you how to use the sensor related APIs effectively, they also describe how to use supporting Android OS components to build complete systems. Along the way, they provide solutions to problems that commonly occur when using Android's sensors, with tested, real-world examples. Ultimately, this invaluable resource provides in-depth, runnable code examples that you can then adapt for your own applications.

  • Shows experienced Android developers how to exploit the rich set of Android smartphone sensors to build human-interactive Android apps
  • Explores Android locational and physical sensors (including temperature, pressure, light, acceleration, etc.), as well as cameras, microphones, and speech recognition
  • Helps programmers use the Android sensor APIs, use Android OS components to build complete systems, and solve common problems
  • Includes detailed, functional code that you can adapt and use for your own applications
  • Shows you how to successfully implement real-world solutions using each class of sensors for determining location, interpreting physical sensors, handling images and audio, and recognizing and acting on speech

Learn how to write programs for this fascinating aspect of mobile app development with Professional Android Sensor Programming.

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INTRODUCTION xxvii

PART I: LOCATION SERVICES

CHAPTER 1: INTRODUCING THE ANDROID LOCATION SERVICE 3

CHAPTER 2: DETERMINING A DEVICE'S CURRENT LOCATION 11

CHAPTER 3: TRACKING DEVICE MOVEMENT 27

CHAPTER 4: PROXIMITY ALERTS 45

PART II: INFERRING INFORMATION FROM PHYSICAL SENSORS

CHAPTER 5: OVERVIEW OF PHYSICAL SENSORS 65

CHAPTER 6: ERRORS AND SENSOR SIGNAL PROCESSING 103

CHAPTER 7: DETERMINING DEVICE ORIENTATION 121

CHAPTER 8: DETECTING MOVEMENT 147

CHAPTER 10: ANDROID OPEN ACCESSORY 189

PART III: SENSING THE AUGMENTED, PATTERN-RICH EXTERNAL WORLD

CHAPTER 11: NEAR FIELD COMMUNICATION (NFC) 219

CHAPTER 12: USING THE CAMERA 255

CHAPTER 13: IMAGE-PROCESSING TECHNIQUES 281

CHAPTER 14: USING THE MICROPHONE 303

PART IV: SPEAKING TO ANDROID

CHAPTER 15: DESIGNING A SPEECH-ENABLED APP 333

CHAPTER 16: USING SPEECH RECOGNITION AND TEXT-TO-SPEECH APIS 349

CHAPTER 17: MATCHING WHAT WAS SAID 407

CHAPTER 18: EXECUTING VOICE ACTIONS 441

CHAPTER 19: IMPLEMENTING SPEECH ACTIVATION 471

INDEX 495

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Greg Milette is a professional Android developer and founder of Gradison Technologies, an app development company. He enjoys building practical apps like Digital Recipe Sidekick and contributing to StackOverflow.

Adam Stroud is the lead developer for the Android version of RunKeeper. He is a self-proclaimed "phandroid" and is an active participant in the Android virtual community on StackOverflow and Android Google groups.

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