找不到心率传感器（LG Watch Urbane）

Question

我正在尝试使用MainActivity.java上的以下代码访问LG Watch Urbane的心率传感器：

mSensorManager = (SensorManager) getSystemService(Context.SENSOR_SERVICE);
mHeartRateSensor = mSensorManager.getDefaultSensor(Sensor.TYPE_HEART_RATE);
boolean sensorRegistered = mSensorManager.registerListener(this, mHeartRateSensor, SensorManager.SENSOR_DELAY_NORMAL);
Log.d("Sensor Status:", " Sensor registered: " + (sensorRegistered ? "yes" : "no"));

问题是我收到此错误：

E/SensorManager: sensor or listener is null

发生该错误是因为没有与TYPE_HEART_RATE相关联的传感器。因此，我编写了一些代码以使用.getSensorList（Sensor.TYPE_ALL）方法获取传感器的完整列表，我得到了以下信息：

03-14 02:56:43.221 2936-2936/? I/Sensor list: MPU6515 Accelerometer: 1
03-14 02:56:43.221 2936-2936/? I/Sensor list: AK8963 Magnetometer: 2
03-14 02:56:43.221 2936-2936/? I/Sensor list: AK8963 Magnetometer     Uncalibrated: 14
03-14 02:56:43.221 2936-2936/? I/Sensor list: MPU6515 Gyroscope: 4
03-14 02:56:43.221 2936-2936/? I/Sensor list: MPU6515 Gyroscope Uncalibrated: 16
03-14 02:56:43.221 2936-2936/? I/Sensor list: HSPPAD038 Pressure: 6
03-14 02:56:43.221 2936-2936/? I/Sensor list: MPU6515 Accelerometer -Wakeup Secondary: 1
03-14 02:56:43.221 2936-2936/? I/Sensor list: AK8963 Magnetometer -Wakeup Secondary: 2
03-14 02:56:43.221 2936-2936/? I/Sensor list: AK8963 Magnetometer Uncalibrated -Wakeup Secondary: 14
03-14 02:56:43.221 2936-2936/? I/Sensor list: MPU6515 Gyroscope -Wakeup Secondary: 4
03-14 02:56:43.221 2936-2936/? I/Sensor list: MPU6515 Gyroscope Uncalibrated -Wakeup Secondary: 16
03-14 02:56:43.221 2936-2936/? I/Sensor list: HSPPAD038 Pressure -Wakeup Secondary: 6
03-14 02:56:43.221 2936-2936/? I/Sensor list: Gravity: 9
03-14 02:56:43.221 2936-2936/? I/Sensor list: Linear Acceleration: 10
03-14 02:56:43.221 2936-2936/? I/Sensor list: Rotation Vector: 11
03-14 02:56:43.222 2936-2936/? I/Sensor list: Step Detector: 18
03-14 02:56:43.222 2936-2936/? I/Sensor list: Step Counter: 19
03-14 02:56:43.222 2936-2936/? I/Sensor list: Significant Motion Detector: 17
03-14 02:56:43.222 2936-2936/? I/Sensor list: Game Rotation Vector: 15
03-14 02:56:43.222 2936-2936/? I/Sensor list: GeoMagnetic Rotation Vector: 20
03-14 02:56:43.222 2936-2936/? I/Sensor list: Orientation: 3
03-14 02:56:43.222 2936-2936/? I/Sensor list: Tilt Detector: 22
03-14 02:56:43.222 2936-2936/? I/Sensor list: Gravity -Wakeup Secondary: 9
03-14 02:56:43.222 2936-2936/? I/Sensor list: Linear Acceleration -Wakeup Secondary: 10
03-14 02:56:43.222 2936-2936/? I/Sensor list: Rotation Vector -Wakeup Secondary: 11
03-14 02:56:43.222 2936-2936/? I/Sensor list: Step Detector -Wakeup Secondary: 18
03-14 02:56:43.222 2936-2936/? I/Sensor list: Step Counter -Wakeup Secondary: 19
03-14 02:56:43.222 2936-2936/? I/Sensor list: Game Rotation Vector -Wakeup Secondary: 15
03-14 02:56:43.222 2936-2936/? I/Sensor list: GeoMagnetic Rotation Vector -Wakeup Secondary: 20
03-14 02:56:43.222 2936-2936/? I/Sensor list: Orientation -Wakeup Secondary: 3
03-14 02:56:43.222 2936-2936/? I/Sensor list: Wrist Tilt Gesture: 26

我在那里没有看到任何心率传感器，所以我不知道为了从中获取数据我必须使用什么类型的编号。

有人知道我在做什么错吗？

提前致谢。

Answer 1

确保您的应用程序已定义并授予“人体传感器”权限。

验证：

<uses-permission android:name="android.permission.BODY_SENSORS"/>

在您的AndroidManifest.xml中

另外，请通过检查手表上的“权限”设置来确保已授予该权限：“设置”->“权限”->“您的应用”