java - 为 GoogleFit Android 应用程序创建 SessionsAPI（等）

Question

我正在为大学构建一个小型健康/健身应用程序，并且在开始使用 GoogleFit API 时遇到了一些困难。

到目前为止，我一直在关注 Google 文档，目前认为我正处于“获取必要的 Android 权限”或“获取 OAuth 权限”的“开始”页面上。但是现在我开始感到困惑..

它说我接下来必须创建不同的 API 客户端、、、等等SensorClient。我不知道该怎么做！我是否将它们放在自己的 Java 类中？我如何连接到他们？RecordingClientHistoryClientSessionsClient

我对 Java 和 Android 感到非常自信和自在，并且真的只是想克服这个小障碍，希望能有所收获。我试过寻找教程，但找不到任何最近或深入的东西。

任何帮助表示赞赏，这是我到目前为止所做的：

public class ConnectTrackerFirst extends AppCompatActivity implements OnDataPointListener,
            GoogleApiClient.ConnectionCallbacks,
            GoogleApiClient.OnConnectionFailedListener {

    private static final int REQUEST_OAUTH = 1;
    private static final String AUTH_PENDING = "auth_state_pending";
    private boolean authInProgress = false;
    private GoogleApiClient mApiClient;

        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.connect_tracker_first);

            if (savedInstanceState != null) {
                authInProgress = savedInstanceState.getBoolean(AUTH_PENDING);
            }

            mApiClient = new GoogleApiClient.Builder(this)
                    .addApi(Fitness.SENSORS_API)
                    .addScope(new Scope(Scopes.FITNESS_ACTIVITY_READ_WRITE))
                    .addConnectionCallbacks(this)
                    .addOnConnectionFailedListener(this)
                    .build();

        }

        @Override
        protected void onStart() {
            super.onStart();
            mApiClient.connect();
        }

        @Override
        public void onConnected(Bundle bundle) {
            DataSourcesRequest dataSourceRequest = new DataSourcesRequest.Builder()
                    .setDataTypes( DataType.TYPE_STEP_COUNT_CUMULATIVE )
                    .setDataSourceTypes( DataSource.TYPE_RAW )
                    .build();

            ResultCallback<DataSourcesResult> dataSourcesResultCallback = new ResultCallback<DataSourcesResult>() {
                @Override
                public void onResult(DataSourcesResult dataSourcesResult) {
                    for( DataSource dataSource : dataSourcesResult.getDataSources() ) {
                        if( DataType.TYPE_STEP_COUNT_CUMULATIVE.equals( dataSource.getDataType() ) ) {
                            registerFitnessDataListener(dataSource, DataType.TYPE_STEP_COUNT_CUMULATIVE);
                        }
                    }
                }
            };

            Fitness.SensorsApi.findDataSources(mApiClient, dataSourceRequest)
                    .setResultCallback(dataSourcesResultCallback);
        }

    private void registerFitnessDataListener(DataSource dataSource, DataType dataType) {
        SensorRequest request = new SensorRequest.Builder()
                .setDataSource( dataSource )
                .setDataType( dataType )
                .setSamplingRate( 3, TimeUnit.SECONDS )
                .build();

        Fitness.SensorsApi.add( mApiClient, request, this )
                .setResultCallback(new ResultCallback<Status>() {
                    @Override
                    public void onResult(Status status) {
                        if (status.isSuccess()) {
                            Log.e( "GoogleFit", "SensorApi successfully added" );
                        }
                    }
                });
    }


    @Override
        public void onConnectionSuspended(int i) {

        }

        @Override
        public void onConnectionFailed(ConnectionResult connectionResult) {
            if( !authInProgress ) {
                try {
                    authInProgress = true;
                    connectionResult.startResolutionForResult( ConnectTrackerFirst.this, REQUEST_OAUTH );
                } catch(IntentSender.SendIntentException e ) {

                }
            } else {
                Log.e( "GoogleFit", "authInProgress" );
            }
        }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (requestCode == REQUEST_OAUTH) {
            authInProgress = false;
            if (resultCode == RESULT_OK) {
                if (!mApiClient.isConnecting() && !mApiClient.isConnected()) {
                    mApiClient.connect();
                }
            } else if (resultCode == RESULT_CANCELED) {
                Log.e("GoogleFit", "RESULT_CANCELED");
            }
        } else {
            Log.e("GoogleFit", "requestCode NOT request_oauth");
        }
    }

        @Override
        public void onDataPoint(DataPoint dataPoint) {
            for( final Field field : dataPoint.getDataType().getFields() ) {
                final Value value = dataPoint.getValue( field );
                runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        Toast.makeText(getApplicationContext(), "Field: " + field.getName() + " Value: " + value, Toast.LENGTH_SHORT).show();
                    }
                });
            }
        }

    @Override
    protected void onStop() {
        super.onStop();

        Fitness.SensorsApi.remove( mApiClient, this )
                .setResultCallback(new ResultCallback<Status>() {
                    @Override
                    public void onResult(Status status) {
                        if (status.isSuccess()) {
                            mApiClient.disconnect();
                        }
                    }
                });
    }

    @Override
    protected void onSaveInstanceState(Bundle outState) {
        super.onSaveInstanceState(outState);
        outState.putBoolean(AUTH_PENDING, authInProgress);
    }

}