CODEWITHSUNDEEP
androidxmlkotlinsensors
Enrico Cortinovis
Enrico Cortinovis

Reputation: 861

How to get linear acceleration data from SensorManager?

I am trying to display the linear acceleration of the phone inside a textview, on an Android app, using Kotlin.

In one activity, I have

var sensorManager : SensorManager? = null
var lastUpdatedDate : Date? = null

Then, inside the onCreate() method I have

lastUpdatedDate = Date(System.currentTimeMillis())
sensorManager = getSystemService(SENSOR_SERVICE) as SensorManager

And my onSensorChanged() method is as follows:

@Override
override fun onSensorChanged(event: SensorEvent?) {
    when (event?.sensor?.type) {
        Sensor.TYPE_LINEAR_ACCELERATION -> {
            timer_since_started_detecting.text = event.values[0].toString()
        }
    }
}

From my understanding, onSensorChanged() gets called (when the activity class extends SensorEventListener) every time one of the sensors the phone has updates its value.

From other answers and from the documentation, I should be able to see the type of sensor that changed its value, and in my case, if it is the linear acceleration sensor, the new value should be written inside my textview.

Upvotes: 1

Views: 641

Answers (1)

CommonsWare
CommonsWare

Reputation: 1006779

From my understanding, onSensorChanged() gets called (when the activity class extends SensorEventListener) every time one of the sensors the phone has updates its value.

You also need to call registerListener() on SensorManager, supplying your listener and the sensor that you want. See:

Upvotes: 1

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