如何在Android可穿戴设备中访问心率传感器？

Question

我在访问Moto360的心率传感器时遇到问题。

我试着做以下事情：

Sensor mHeartRateSensor = mSensorManager.getDefaultSensor(Sensor.TYPE_HEART_RATE);
mSensorManager.registerListener(this, mHeartRateSensor, SensorManager.SENSOR_DELAY_NORMAL);

然后实现SensorEventListener接口：

@Override
public void onSensorChanged(SensorEvent event) {

        String TAG = "tag";
        Log.i(TAG, "--------------------------");
        Log.i(TAG, msg);
        Log.i(TAG, ""+ event.sensor.getType());
        Log.i("live","--------------");

此外，我尝试列出所有的传感器，它没有显示心率传感器在列表上。

当然我加了一些

 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.watchtest" >

<uses-feature android:name="android.hardware.type.watch" />
<uses-permission android:name="android.permission.BODY_SENSORS" />

有什么想法吗？

W.

Answer 1

在我做了以下工作后开始为我工作：

>

从watch中卸载了我的应用程序

adb -s localhost:4444 uninstall com.example.android.wearable.jumpingjack

添加了获取心率传感器的权限

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

android:minSdkVersion="20" android:targetSdkVersion="20"

heartRate onSensorChanged values = [0.0], accuracy = 0, sensor = {Sensor name="Heart Rate Sensor", vendor="Motorola", version=1, type=21, maxRange=65535.0, resolution=1.0, power=0.45, minDelay=0}
heartRate onSensorChanged values = [53.0], accuracy = 2, sensor = {Sensor name="Heart Rate Sensor", vendor="Motorola", version=1, type=21, maxRange=65535.0, resolution=1.0, power=0.45, minDelay=0}
heartRate onSensorChanged values = [54.0], accuracy = 2, sensor = {Sensor name="Heart Rate Sensor", vendor="Motorola", version=1, type=21, maxRange=65535.0, resolution=1.0, power=0.45, minDelay=0}
heartRate onSensorChanged values = [55.0], accuracy = 2, sensor = {Sensor name="Heart Rate Sensor", vendor="Motorola", version=1, type=21, maxRange=65535.0, resolution=1.0, power=0.45, minDelay=0}
heartRate onSensorChanged values = [77.0], accuracy = 1, sensor = {Sensor name="Heart Rate Sensor", vendor="Motorola", version=1, type=21, maxRange=65535.0, resolution=1.0, power=0.45, minDelay=0}