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androidgoogle-fitheartbeat

Requesting Sensor.TYPE_HEART_BEAT returns null in Android 9 Ticwatch c2

I would like to use Sensor.TYPE_HEART_BEAT from Androids Sensor API to measure heart rate variability, however when requested from my application it returns null.

I've checked my manifest permissions for BODY_SENSORS which has no effect. Sensor.TYPE_HEART_RATE also seems to be working fine.

    Sensor sensor = mSensorManager.getDefaultSensor(Sensor.TYPE_HEART_BEAT);

    if (sensor == null) {
        Log.d(TAG,"Sensor is null");
    }

I would expect this to return a valid sensor but it returns null. I am using the Ticwatch c2 which does have a heart rate sensor. I'm not sure why heart beat is not working.

Solution

  • According to this post on the mobvoi community forms, the Ticwatch C2 does not have a heart beat sensor.

    The post also recommends using the adb command adb shell dumpsys sensorservice to list all available sensors for any watch.