Android Sensor and Framework - AWARE
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Android Sensor and Framework - AWARE
- 1. Android Sensor and Framework - AWARE Yucheng Jin, Sven Charleer, Robin De Croon Joris Klerkx Augment Human @ HCI 7 October 2015
- 2. Sensors Hardware devices that measure the physical environment. • Motion sensors accelerometers, gravity sensors, gyroscopes, etc. • Environmental sensors barometers, photometers, and thermometers. • Position sensors GPS, orientation sensors and magnetometers.
- 3. Sensor Framework Access sensors and and acquire raw sensor data. Android Sensor Framework includes 3 abstract class and one interface. • SensorManager • Sensor • SensorEvent • SensorEventListener http://developer.android.com/guide/topics/sensors/sensors_overview.html • Identifying sensors and sensor capabilities • Monitor sensor events
- 4. Sensor Framework - AWARE AWARE is an Android instrumentation framework for logging, sharing and reusing mobile context. http://www.awareframework.com/
- 5. Overview of AWARE infrastructure Ferreira, D., Kostakos, V., & Dey, A. K. (2015). AWARE: mobile context instrumentation framework. Frontiers in ICT, 2, 6.
- 6. Overview of AWARE client’s interfaces Ferreira, D., Kostakos, V., & Dey, A. K. (2015). AWARE: mobile context instrumentation framework. Frontiers in ICT, 2, 6.
- 7. How to use AWARE in your app? • Create a AWARE plugin It runs on top of the AWARE app, AWARE need to be installed beforehand. (template) http://www.awareframework.com/creating-a-new-aware-plugin/ • Creating a standalone application It uses AWARE as a built-in library and leverages AWARE’s sensors’ and plugins’ APIs.
- 8. Creating a standalone application 1. Adding AWARE as a library to your project. 2. Overriding AWARE’s resources with your application’s resources. 3. Include AWARE’s ContentProviders inside your application. 4. Include AWARE’s plugins inside your application.(if need) http://www.awareframework.com/creating-a-standalone-application/
- 9. Saving sensor data • Saving context data into a ContentProvider ContentProvider can manage databases such as SQLite. Sync data Save data http://www.awareframework.com/creating-a-context-provider/ class Plugin, onCreate()
- 10. Reading sensor data Two ways of reading data • Passive context Accessing the data from the database when you need it • Active context - Listening to data changes - Listening to new values http://www.awareframework.com/how-do-i-read-data/#read1
- 11. Passive context Accessing the data from the database. http://www.awareframework.com/how-do-i-read-data/#read1
- 12. Active context Reading new data from the database when it gets inserted http://www.awareframework.com/how-do-i-read-data/#read1 In the class Plugin
- 13. Active context Reading the new data as it gets broadcasted by a sensor http://www.awareframework.com/how-do-i-read-data/#read1 onCreate(), onResume() In the class Plugin onReceive()
- 14. Practice • AWARE Follow the link to create a standalone application with sensors or the plugin “Google Fused Location” http://www.awareframework.com/creating-a-standalone-application/# http://www.awareframework.com/plugin/82/ or create your own plugin http://www.awareframework.com/creating-a-new-aware-plugin/ More tutorial http://www.awareframework.com/category/tutorials/ • Original android sensor doc Modify the app and show the actual values of listed sensors on your device. http://www.tutorialspoint.com/android/android_sensors.htm http://developer.android.com/guide/topics/sensors/sensors_overview.html
Editor's Notes
- measure acceleration forces and rotational forces along three axes ambient air temperature and pressure, illumination, and humidity
- You can use this class to create an instance of the sensor service. This class provides various methods for accessing and listing sensors, registering and unregistering sensor event listeners, and acquiring orientation information. This class also provides several sensor constants that are used to report sensor accuracy, set data acquisition rates, and calibrate sensors. You can use this class to create an instance of a specific sensor. This class provides various methods that let you determine a sensor's capabilities. The system uses this class to create a sensor event object, which provides information about a sensor event. A sensor event object includes the following information: the raw sensor data, the type of sensor that generated the event, the accuracy of the data, and the timestamp for the event. You can use this interface to create two callback methods that receive notifications (sensor events) when sensor values change or when sensor accuracy changes.
- AWARE provides application developers with user’s context using AWARE’s API.
- AWARE provides application developers with user’s context using AWARE’s API.
- AWARE provides application developers with user’s context using AWARE’s API.
- read new data from the database when it gets inserted read the new data as it gets broadcasted by a sensor
- read new data from the database when it gets inserted read the new data as it gets broadcasted by a sensor
- Also, its important that you unregister the observer in the onDestroy() method of your plugin so that your plugin does not cause memory leaks