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Android Sensor Programming By Example

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  • Learn about sensor fundamentals, different types of sensors, and the sensor co-ordinate system
  • Understand the various classes, callbacks, and APIs of the Android Sensor framework
  • Check all the available sensors on an Android device and know their individual capabilities—for example, their range of values, power consumption, and so on.
  • Implement sensor fusion using two or more sensors together and learn to compensate for the weakness of one sensor by using the strength of another
  • Build a variety of sensor based, real-world applications such as Weather, Pedometer, Compass, Driving Events Detection, Fitness Tracker, and so on.
  • Get to know about wake up and non-wake up sensors, wake locks, and how to use sensor batch processing along with the sensor hardware FIFO queue
  • Develop efficient battery and processor algorithms using raw sensor data to solve real-world problems
  • Connect to a variety of remote sensors such as body weight measurement and body fat percentage measurement using the Google Fit platform from your Android app

Android phones available in today’s market have a wide variety of powerful and highly precise sensors. Interesting applications can be built with them such as a local weather app using weather sensors, analyzing risky driving behavior using motion sensors, a fitness tracker using step-counter sensors, and so on. Sensors in external devices such as Android Watch, Body Analyzer & Weight Machine, Running Speed Cell, and so on can also be connected and used from your Android app running on your phone.

Moving further, this book will provide the skills required to use sensors in your Android applications. It will walk you through all the fundamentals of sensors and will provide a thorough understanding of the Android Sensor Framework. You will also get to learn how to write code for the supportive infrastructure such as background services, scheduled and long running background threads, and databases for saving sensor data. Additionally, you will learn how to connect and use sensors in external devices from your Android app using the Google Fit platform.

By the end of the book, you will be well versed in the use of Android sensors and programming to build interactive applications.

  • Get a thorough understanding of the fundamentals and framework of Android sensors.
  • Acquire knowledge of advance sensor programming, and learn how to connect and use sensors in external devices such as the Android Watch, Polar heart rate monitors, Adidas speed cells, and so on.
  • Learn from real-world sensor-based applications such as the Pedometer app to detect daily steps, the Driving app to detect driving events, and the Professional Fitness tracker app to track heart rate, weight, daily steps, calories burned, and so on.
Page Count 194
Course Length 5 hours 49 minutes
ISBN 9781785285509
Date Of Publication 28 Apr 2016
Understanding the sensor framework callbacks
Time for action - using sensors in the foreground activity
Time for action – listing the available sensors on a device
Time for action – knowing individual sensors' capabilities
Time for action – getting the sensor values and updating the user interface
Time for action – processing the sensor values in the background service
What just happened?
Understanding the light and proximity sensors
The automatic torch light and screen brightness app requirements
Time for action – turning the torch light on and off using the proximity sensor
Time for action – adjusting the screen brightness using the light sensor
Wake locks, wakeup sensors, and the FIFO queue
Understanding motion-based sensors
Understanding position-based sensors
The fingerprint sensor
Time for action – shake detection using the accelerometer sensor
Time for action – the compass using orientation sensor and orientation APIs
Time for action – using the fingerprint sensor
What just happened?
The pedometer app's requirements
Understanding the step counter and step detector sensors
Time for action – using the step counter sensor in activity
Time for action – maintaining step history with the step detector sensor
Understanding the walking, jogging, and running signatures using the accelerometer sensor's data
Time for action – type of step (walking, jogging, and running) detection using the accelerometer sensor
The Google Fit platform
Platform basics
Authorization and permission scopes
Fitness tracker app using fitness APIs
Fitness tracker application requirements and architecture
Time for action – working with live fitness data using the Sensors API
Time for action – recording fitness data in background using Recording API
Time for action – getting history fitness data using the History API


Varun Nagpal

Varun Nagpal has been developing mobile apps since 2005 and has developed and contributed to more than 100 professional apps and games on various platforms, such as Android, iOS, Blackberry, and J2ME. Android app development has been his main area of expertise, and he has developed apps for a wide variety of Android devices, such as Android phones, tablets, watches, smart TVs, Android Auto, and Google Glass.

He moved to Chicago in late 2013, and since then, he has become a seasoned mobile architect. He has worked in different roles (mobile architect, technical lead, senior developer, and technical consultant) for a variety of various global clients (Allstate, Verizon, AT&T, Sydbank Denmark, SiS Taiwan, Chams PLC Nigeria, and Nandos South Africa) in order to implement their mobile solutions. He has SCJP (Core Java) and SCWD (JSP and Servlets) certifications from Sun Microsystems and MCP (C#) and MCTS (ASP.NET) certifications from Microsoft. You can find his blogs on mobile technology and white papers written by him on his website at http://www.varunnagpal.com/.

When he's not working, Varun can be found meditating or playing the flute. He also loves to develop meditation apps and fun games in his free time. He has developed about 40 meditation apps and games available on Google Play (https://play.google.com/store/apps/developer?id=Creative.Software.Studio) and the Apple App Store (https://itunes.apple.com/us/artist/creative-software-studio/id574745824) under the name of Creative Software Studio, his part-time start-up company (http://creativesoftwarestudio.com/).