使用Google-Fit传感器API的计步器

Question

我一直在玩Xamarin和Google Fit一段时间，我试图制作一个简单的计步器应用程序。我不能让听众工作。据我了解，每次采取步骤时都会调用OnDataPointListener的{​​{1}}方法。用我的代码我不会发现任何事情。我做错了什么？

以下是我使用的代码（缩写为仅包含相关部分）

MainActivity.cs

OnDataPoint()

BuildFitnessClient

GoogleApiClient mClient;
OnDataPointListener _mListener;
protected override void OnCreate(Bundle bundle)
{
    base.OnCreate(bundle);
    SetContentView(Resource.Layout.Main);
    if (bundle != null)
    {
        authInProgress = bundle.GetBoolean(AUTH_PENDING);
    }
    _viewPager = FindViewById<ViewPager>(Resource.Id.container);
    _viewPager.Adapter = new FragmentAdapter(SupportFragmentManager);
    BuildFitnessClient();
}

ClientConnectionCallback.cs

void BuildFitnessClient()
{
    var clientConnectionCallback = new ClientConnectionCallback();
    clientConnectionCallback.OnConnectedImpl = async () => await FindFitnessDataSources();
    mClient = new GoogleApiClient.Builder(this)
        .AddApi(FitnessClass.SENSORS_API)
        .AddScope(FitnessClass.ScopeActivityReadWrite)
        .AddScope(FitnessClass.ScopeBodyReadWrite)
        .AddScope(FitnessClass.ScopeLocationRead)
        .AddConnectionCallbacks(clientConnectionCallback)
        .AddOnConnectionFailedListener((ConnectionResult result) =>
        {
            if (!result.HasResolution)
            {
                // Show the localized error dialog
#pragma warning disable CS0618 // Type or member is obsolete
                GooglePlayServicesUtil.GetErrorDialog(result.ErrorCode, this, 0).Show();
#pragma warning restore CS0618 // Type or member is obsolete
                return;
            }
            if (!authInProgress)
            {
                try
                {
                    authInProgress = true;
                    result.StartResolutionForResult(this, REQUEST_OAUTH);
                }
                catch (IntentSender.SendIntentException e)
                {
                }
            }
        }).Build();
}

private async Task FindFitnessDataSources()
{

    var dataSourcesResult = await FitnessClass.SensorsApi.FindDataSourcesAsync(mClient, new DataSourcesRequest.Builder()
        .SetDataSourceTypes(DataSource.TypeDerived)
        .SetDataTypes(DataType.TypeStepCountDelta)
        .Build());

    foreach (DataSource dataSource in dataSourcesResult.DataSources)
    {
        if (_mListener == null)
        {
            await RegisterFitnessDataListener(dataSource, dataSource.DataType);
        }
    }
}

private async Task RegisterFitnessDataListener(DataSource dataSource, DataType dataType)
{
    var status = await FitnessClass.SensorsApi.AddAsync(mClient, new SensorRequest.Builder()
         .SetDataSource(dataSource) // Optional but recommended for custom data sets.
         .SetDataType(dataType) // Can't be omitted.
         .SetSamplingRate(1, TimeUnit.Seconds)
         .Build(), _mListener);
    if (status.IsSuccess)
    {
        Toast.MakeText(this, "Listener connected", ToastLength.Short).Show();
    }
    else
    {

    }
}

IOnDataPointListener

internal class ClientConnectionCallback : Java.Lang.Object, GoogleApiClient.IConnectionCallbacks
{
    public Action OnConnectedImpl { get; set; }

    public void OnConnected(Android.OS.Bundle connectionHint)
    {
        OnConnectedImpl();
    }

    public void OnConnectionSuspended(int cause)
    {
        if (cause == GoogleApiClient.ConnectionCallbacks.CauseNetworkLost)
        {
            Log.Info("Health365", "Connection lost.  Cause: Network Lost.");
        }
        else if (cause == GoogleApiClient.ConnectionCallbacks.CauseServiceDisconnected)
        {
            Log.Info("Health365", "Connection lost. Reason: Service Disconnected");
        }
    }
}