實現感測監聽

class MainActivity : AppCompatActivity(), SensorEventListener {
    override fun onAccuracyChanged(sensor: Sensor?, accuracy: Int) {

    }

    override fun onSensorChanged(event: SensorEvent?) {

    }
}

1.取得SensorManager

val sensorManager = getSystemService(Context.SENSOR_SERVICE) as SensorManager

2.光感測器 實現SensorEventListener

sensorManager.registerListener(this , sensorManager.getDefaultSensor(Sensor.TYPE_LIGHT), SensorManager.SENSOR_DELAY_NORMAL)

override fun onAccuracyChanged(sensor: Sensor?, accuracy: Int) {

}

override fun onSensorChanged(event: SensorEvent) {
    //光越亮數值越大
    val lightValue = event.values[0]
}

3.距離感測器 實現SensorEventListener

sensorManager.registerListener(this, sensorManager.getDefaultSensor(Sensor.TYPE_PROXIMITY), SensorManager.SENSOR_DELAY_NORMAL)

override fun onAccuracyChanged(sensor: Sensor?, accuracy: Int) {

}

override fun onSensorChanged(event: SensorEvent) {
    //距離越遠數值越大 目前只有0跟5
    val proximityValue = event.values[0]
}

4.加速度感測器 實現SensorEventListener

sensorManager.registerListener(this, sensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER), SensorManager.SENSOR_DELAY_NORMAL)

override fun onAccuracyChanged(sensor: Sensor?, accuracy: Int) {

}

override fun onSensorChanged(event: SensorEvent) {
    val x = event.values[0]
    val y = event.values[1]
    val z = event.values[2]
}

5.計步感測器(不會馬上顯示) 實現SensorEventListener

//總步數
sensorManager.registerListener(this, sensorManager.getDefaultSensor(Sensor.TYPE_STEP_COUNTER), SensorManager.SENSOR_DELAY_NORMAL)
//步數是否有效 1代表有效
sensorManager.registerListener(this, sensorManager.getDefaultSensor(Sensor.TYPE_STEP_DETECTOR), SensorManager.SENSOR_DELAY_NORMAL)

override fun onAccuracyChanged(sensor: Sensor?, accuracy: Int) {

}

override fun onSensorChanged(event: SensorEvent) {
     when(event.sensor.type) {
            Sensor.TYPE_STEP_COUNTER -> {
                val counter = event.values[0]
            }
            Sensor.TYPE_STEP_DETECTOR -> {
                val detector = event.values[0]
            }
      }
}