기기에 설치된 센서종류 확인하기

이번 포스팅에서는 안드로이드 기기에 설치된 센서 종류를 확인하는 법에 대해 알아보도록 하겠습니다.

Android 플랫폼에서 지원하는 센서의 유형은 다음 표와 같습니다.

Sensor	Type	Description	Common Uses
TYPE_ACCELEROMETER	Hardware	Measures the acceleration force in m/s2 that is applied to a device on all three physical axes (x, y, and z), including the force of gravity.	Motion detection (shake, tilt, etc.).
TYPE_AMBIENT_TEMPERATURE	Hardware	Measures the ambient room temperature in degrees Celsius (°C). See note below.	Monitoring air temperatures.
TYPE_GRAVITY	Software or Hardware	Measures the force of gravity in m/s2 that is applied to a device on all three physical axes (x, y, z).	Motion detection (shake, tilt, etc.).
TYPE_GYROSCOPE	Hardware	Measures a device’s rate of rotation in rad/s around each of the three physical axes (x, y, and z).	Rotation detection (spin, turn, etc.).
TYPE_LIGHT	Hardware	Measures the ambient light level (illumination) in lx.	Controlling screen brightness.
TYPE_LINEAR_ACCELERATION	Software or Hardware	Measures the acceleration force in m/s2 that is applied to a device on all three physical axes (x, y, and z), excluding the force of gravity.	Monitoring acceleration along a single axis.
TYPE_MAGNETIC_FIELD	Hardware	Measures the ambient geomagnetic field for all three physical axes (x, y, z) in μT.	Creating a compass.
TYPE_ORIENTATION	Software	Measures degrees of rotation that a device makes around all three physical axes (x, y, z). As of API level 3 you can obtain the inclination matrix and rotation matrix for a device by using the gravity sensor and the geomagnetic field sensor in conjunction with the getRotationMatrix() method.	Determining device position.
TYPE_PRESSURE	Hardware	Measures the ambient air pressure in hPa or mbar.	Monitoring air pressure changes.
TYPE_PROXIMITY	Hardware	Measures the proximity of an object in cm relative to the view screen of a device. This sensor is typically used to determine whether a handset is being held up to a person’s ear.	Phone position during a call.
TYPE_RELATIVE_HUMIDITY	Hardware	Measures the relative ambient humidity in percent (%).	Monitoring dewpoint, absolute, and relative humidity.
TYPE_ROTATION_VECTOR	Software or Hardware	Measures the orientation of a device by providing the three elements of the device’s rotation vector.	Motion detection and rotation detection.
TYPE_TEMPERATURE	Hardware	Measures the temperature of the device in degrees Celsius (°C). This sensor implementation varies across devices and this sensor was replaced with the TYPE_AMBIENT_TEMPERATURE sensor in API Level 14	Monitoring temperatures.

센서도 많은 종류가 있는 것을 알 수 있습니다. 여기서는 기기에 장착된 센서를 확인하는 방법을 알아볼 겁니다.

우선 새로운 프로젝트를 만들고 센서 리스트를 표시할 화면을 작성합니다.

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<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <ScrollView
        android:layout_width="0dp"
        android:layout_height="0dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent">

        <TextView
            android:id="@+id/tv_sensor"
            android:layout_width="match_parent"
            android:layout_height="wrap_content" />

    </ScrollView>

</androidx.constraintlayout.widget.ConstraintLayout>

다음은 onCreate에서 센서 리스트를 획득하는 코드를 작성합니다.

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class MainActivity : AppCompatActivity() {
    private val binding by lazy {
        ActivityMainBinding.inflate(layoutInflater)
    }
    private val sensorManager by lazy {
        getSystemService(Context.SENSOR_SERVICE) as SensorManager
    }

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(binding.root)

        getSensorList()
    }

    private fun getSensorList() {
        val sensorList: List<Sensor> = sensorManager.getSensorList(Sensor.TYPE_ALL)
        var sensorResult = String()
        sensorList.forEachIndexed { index, sensor ->
            sensorResult += """
                $index : ${sensor.name}
                toString : $sensor
                
                
                """.trimIndent()
        }

        binding.tvSensor.text = sensorResult
    }
}

우선은 센서 서비스를 관할하는 SensorManager 인스턴스를 획득합니다. 그리고나면 getSensorList로 모든 센서 리스트를 가져온 뒤, 텍스트뷰에 이 리스트의 속성을 표시하면 됩니다.

Sensor의 get 속성은 여러가지가 있는데요, toString으로 모든 속성을 확인할 수 있습니다. 안드로이드 스튜디오에서 제공하는 에뮬레이터에는 다음과 같은 센서가 설치되어 있다고 하네요.

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[
   {
      "Sensor name=""Goldfish 3-axis Accelerometer",
      "vendor=""The Android Open Source Project",
      version=1,
      type=1,
      maxRange=39.300102,
      resolution=2.480159E-4,
      power=3.0,
      minDelay=10000
   },
   {
      "Sensor name=""Goldfish 3-axis Gyroscope",
      "vendor=""The Android Open Source Project",
      version=1,
      type=4,
      maxRange=16.46,
      resolution=0.001,
      power=3.0,
      minDelay=10000
   },
   {
      "Sensor name=""Goldfish 3-axis Magnetic field sensor",
      "vendor=""The Android Open Source Project",
      version=1,
      type=2,
      maxRange=2000.0,
      resolution=0.5,
      power=6.7,
      minDelay=10000
   },
   {
      "Sensor name=""Goldfish Orientation sensor",
      "vendor=""The Android Open Source Project",
      version=1,
      type=3,
      maxRange=360.0,
      resolution=1.0,
      power=9.7,
      minDelay=10000
   },
   {
      "Sensor name=""Goldfish Ambient Temperature sensor",
      "vendor=""The Android Open Source Project",
      version=1,
      type=13,
      maxRange=80.0,
      resolution=1.0,
      power=0.001,
      minDelay=0
   },
   {
      "Sensor name=""Goldfish Proximity sensor",
      "vendor=""The Android Open Source Project",
      version=1,
      type=8,
      maxRange=1.0,
      resolution=1.0,
      power=20.0,
      minDelay=0
   },
   {
      "Sensor name=""Goldfish Light sensor",
      "vendor=""The Android Open Source Project",
      version=1,
      type=5,
      maxRange=40000.0,
      resolution=1.0,
      power=20.0,
      minDelay=0
   },
   {
      "Sensor name=""Goldfish Pressure sensor",
      "vendor=""The Android Open Source Project",
      version=1,
      type=6,
      maxRange=800.0,
      resolution=1.0,
      power=20.0,
      minDelay=10000
   },
   {
      "Sensor name=""Goldfish Humidity sensor",
      "vendor=""The Android Open Source Project",
      version=1,
      type=12,
      maxRange=100.0,
      resolution=1.0,
      power=20.0,
      minDelay=0
   },
   {
      "Sensor name=""Goldfish 3-axis Magnetic field sensor (uncalibrated)",
      "vendor=""The Android Open Source Project",
      version=1,
      type=14,
      maxRange=2000.0,
      resolution=0.5,
      power=6.7,
      minDelay=10000
   },
   {
      "Sensor name=""Game Rotation Vector Sensor",
      "vendor=""AOSP",
      version=3,
      type=15,
      maxRange=1.0,
      resolution=5.9604645E-8,
      power=12.7,
      minDelay=10000
   },
   {
      "Sensor name=""GeoMag Rotation Vector Sensor",
      "vendor=""AOSP",
      version=3,
      type=20,
      maxRange=1.0,
      resolution=5.9604645E-8,
      power=12.7,
      minDelay=10000
   },
   {
      "Sensor name=""Gravity Sensor",
      "vendor=""AOSP",
      version=3,
      type=9,
      maxRange=19.6133,
      resolution=2.480159E-4,
      power=12.7,
      minDelay=10000
   },
   {
      "Sensor name=""Linear Acceleration Sensor",
      "vendor=""AOSP",
      version=3,
      type=10,
      maxRange=19.6133,
      resolution=2.480159E-4,
      power=12.7,
      minDelay=10000
   },
   {
      "Sensor name=""Rotation Vector Sensor",
      "vendor=""AOSP",
      version=3,
      type=11,
      maxRange=1.0,
      resolution=5.9604645E-8,
      power=12.7,
      minDelay=10000
   },
   {
      "Sensor name=""Orientation Sensor",
      "vendor=""AOSP",
      version=1,
      type=3,
      maxRange=360.0,
      resolution=0.00390625,
      power=12.7,
      minDelay=10000
   }
]

이렇게해서 안드로이드 기기에 설치된 센서 리스트를 확인하는 법에 대해 알아보았습니다.

GitHub/cliearl