AWARE: Pedometer

The Pedometer sensor allows us to manages historic pedometer data which is provided by CMPedometer. The pedometer object contains step counts and other information about the distance traveled and the number of floors ascended or descended.

Requirements

iOS 10 or later

Installation

com.awareframework.ios.sensor.pedometer is available through CocoaPods.

1. To install it, simply add the following line to your Podfile:

pod 'com.awareframework.ios.sensor.pedometer'

2. Import com.awareframework.ios.sensor.pedometer library into your source code.

import com_awareframework_ios_sensor_pedometer

3. Add a description of NSMotionUsageDescription into Info.plist

Public functions

PedometerSensor

• init(config:PedometerSensor.Config?) : Initializes the pedometer sensor with the optional configuration.
• start(): Starts the pedometer sensor with the optional configuration.
• stop(): Stops the service.

PedometerSensor.Config

Class to hold the configuration of the sensor.

Fields

• sensorObserver: PedometerObserver: Callback for live data updates.
• interval : Int: A sampling duration (minute) of a sample. (default = 10)
• enabled: Boolean Sensor is enabled or not. (default = false)
• debug: Boolean enable/disable logging to Xcode console. (default = false)
• label: String Label for the data. (default = "")
• deviceId: String Id of the device that will be associated with the events and the sensor. (default = "")
• dbEncryptionKey Encryption key for the database. (default = null)
• dbType: Engine Which db engine to use for saving data. (default = Engine.DatabaseType.NONE)
• dbPath: String Path of the database. (default = "aware_pedometer")
• dbHost: String Host for syncing the database. (default = null)

Broadcasts

Fired Broadcasts

• PedometerSensor.ACTION_AWARE_PEDOMETER fired when pedometer saved data to db after the period ends.

Received Broadcasts

• PedometerSensor.ACTION_AWARE_PEDOMETER_START: received broadcast to start the sensor.
• PedometerSensor.ACTION_AWARE_PEDOMETER_STOP: received broadcast to stop the sensor.
• PedometerSensor.ACTION_AWARE_PEDOMETER_SYNC: received broadcast to send sync attempt to the host.
• PedometerSensor.ACTION_AWARE_PEDOMETER_SET_LABEL: received broadcast to set the data label. Label is expected in the PedometerSensor.EXTRA_LABEL field of the intent extras.

Data Representations

PedometerSensor Data

Contains the raw sensor data.

Field	Type	Description
startDate	Int64	The start time for the pedometer data by unixtime milliseconds since 1970
endDate	Int64	The end time for the pedometer data by unixtime milliseconds since 1970
numberOfSteps	Int64	The number of steps taken by the user.
distance	Double	The estimated distance (in meters) traveled by the user.
currentPace	Double	The current pace of the user, measured in seconds per meter.
currentCadence	Double	The rate at which steps are taken, measured in steps per second.
floorsAscended	Double	The approximate number of floors ascended by walking.
floorsDescended	Double	The approximate number of floors descended by walking.
averageActivePace	Double	The average pace of the user, measured in seconds per meter.
label	String	Customizable label. Useful for data calibration or traceability
deviceId	String	AWARE device UUID
label	String	Customizable label. Useful for data calibration or traceability
timestamp	Int64	Unixtime milliseconds since 1970
timezone	Int	Raw timezone offset of the device
os	String	Operating system of the device (e.g., ios)

Example usage

var pedometer = PedometerSensor.init(PedometerSensor.Config().apply{config in
    config.debug  = true
    config.dbType = .REALM
    config.sensorObserver = Observer()
})
pedometer.start()

class Observer:PedometerObserver {
    func onPedometerChanged(data:PedometerData){
        // Your code here..
    }
}

Author

Yuuki Nishiyama, [email protected]

Related Links

• Apple | CoreMotion
• Apple | CMPedometer
• Apple | CMPedometerData

License

Copyright (c) 2021 AWARE Mobile Context Instrumentation Middleware/Framework (http://www.awareframework.com)

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.