Google Fit 会自动支持实现标准 Bluetooth Low Energy GATT 配置文件的健身设备。如果您的设备 未实现上述某个配置文件，您可以创建一个 Android 应用， 管理与健身设备的通信，并为其公开 将 Google 健身用作软件传感器。您还可以在应用中公开自定义软件传感器。
要在您的应用中创建软件传感器，您需要扩展
FitnessSensorService
类，并在清单文件中将其声明为服务。当用户安装您的
应用，那么 Google 健身会将您的软件传感器提供给其他应用。
当应用注册接收来自应用中的软件传感器的数据时，
Google 健身会绑定到您的服务。
声明传感器服务
要定义软件传感器，请声明
FitnessSensorService
在应用的清单文件中：
<service android:name="com.example.MySensorService"
android:process=":sensor">
<intent-filter>
<action android:name="com.google.android.gms.fitness.service.FitnessSensorService" />
<!-- include at least one mimeType filter for the supported data types -->
<data android:mimeType="vnd.google.fitness.data_type/com.google.heart_rate.bpm" />
</intent-filter>
</service>
此示例中的服务在单独的进程中运行，该进程由
android:process
属性。如需了解详情，请参阅进程。
实现传感器服务
如需实现软件传感器，请扩展 FitnessSensorService 类并
实现其抽象方法。实现的具体细节取决于您的具体用例，但以下示例提供了一些一般准则：
class MySensorService : FitnessSensorService() {
override fun onCreate() {
super.onCreate()
// 1. Initialize your software sensor(s).
// 2. Create DataSource representations of your software sensor(s).
// 3. Initialize some data structure to keep track of a registration
// for each sensor.
}
override fun onFindDataSources(dataTypes: List<DataType>): List<DataSource> {
// 1. Find which of your software sensors provide the data types requested.
// 2. Return those as a list of DataSource objects.
}
override fun onRegister(request: FitnessSensorServiceRequest): Boolean {
// 1. Determine which sensor to register with request.dataSource.
// 2. If a registration for this sensor already exists, replace it with
// this one.
// 3. Keep (or update) a reference to the request object.
// 4. Configure your sensor according to the request parameters.
// 5. When the sensor has new data, deliver it to the platform by
// calling request.dispatcher.publish(dataPoints)
}
override fun onUnregister(dataSource: DataSource): Boolean {
// 1. Configure this sensor to stop delivering data to the platform
// 2. Discard the reference to the registration request object
}
}
public class MySensorService extends FitnessSensorService {
@Override
public void onCreate() {
super.onCreate();
// 1. Initialize your software sensor(s).
// 2. Create DataSource representations of your software sensor(s).
// 3. Initialize some data structure to keep track of a registration
// for each sensor.
}
@NonNull
@Override
public List<DataSource> onFindDataSources(@NonNull List<DataType> list) {
// 1. Find which of your software sensors provide the data types
// requested.
// 2. Return those as a list of DataSource objects.
}
@Override
public boolean onRegister(
@NonNull FitnessSensorServiceRequest fitnessSensorServiceRequest) {
// 1. Determine which sensor to register with request.dataSource.
// 2. If a registration for this sensor already exists, replace it with
// this one.
// 3. Keep (or update) a reference to the request object.
// 4. Configure your sensor according to the request parameters.
// 5. When the sensor has new data, deliver it to the platform by
// calling request.getDispatcher.publish(dataPoints);
}
@Override
public boolean onUnregister(@NonNull DataSource dataSource) {
// 1. Configure this sensor to stop delivering data to the platform
// 2. Discard the reference to the registration request object
}
}