我正在为我的智能手表（三星手表 4）编写一个应用程序，该应用程序使用 hrm（心率监测器）功能跟踪我的心率。在我的旧智能手表（Samsung Gear S3）上，这项服务没有任何问题。我正在使用 Flutter 和锻炼锻炼插件。在我的新智能手表上，出现以下异常：
E/ServiceConnection( 4938): Connection to service is not available for package 'com.google.android.wearable.healthservices' and action 'com.google.android.wearable.healthservices.MeasureClient'.
E/ServiceConnection( 4938): Connection disconnected and maximum number of retries reached.
E/ServiceConnection( 4938): java.util.concurrent.CancellationException: Service not available
E/ServiceConnection( 4938): at androidx.health.services.client.impl.ipc.internal.ServiceConnection.connect(ServiceConnection.java:145)
E/ServiceConnection( 4938): at androidx.health.services.client.impl.ipc.internal.ServiceConnection.registerListener(ServiceConnection.java:212)
E/ServiceConnection( 4938): at androidx.health.services.client.impl.ipc.internal.ConnectionManager.handleMessage(ConnectionManager.java:131)
E/ServiceConnection( 4938): at android.os.Handler.dispatchMessage(Handler.java:102)
E/ServiceConnection( 4938): at android.os.Looper.loop(Looper.java:246)
E/ServiceConnection( 4938): at android.os.HandlerThread.run(HandlerThread.java:67)
I/InputMethodManager( 4938): startInputInner - mService.startInputOrWindowGainedFocus
W/libEGL ( 4938): EGLNativeWindowType 0xc3ab2c08 disconnect failed
W/libEGL ( 4938): EGLNativeWindowType 0xc3ab1008 disconnect failed
I/ViewRootImpl@b1e6990[MainActivity]( 4938): Relayout returned: old=(0,0,396,396) new=(0,0,396,396) req=(396,396)8 dur=63 res=0x5 s={false 0} ch=true fn=2
I/ViewRootImpl@b1e6990[MainActivity]( 4938): stopped(true) old=false
I/ViewRootImpl@b1e6990[MainActivity]( 4938): MSG_WINDOW_FOCUS_CHANGED 0 1
Lost connection to device.```