如何使用Google Fit的API获取用户当前的速度？

AndroidDevM10 发表于 Dev

安卓DevM10

目前正在使用Google Fit API，并且在Sensors API方面遇到了一些麻烦。我正在尝试为应用程序的锻炼获取用户的当前速度，但是文档有点令人困惑。

在此代码段中，是Google信息页中的示例：

Fitness.SensorsApi.add(
            mClient,
            new SensorRequest.Builder()
                    // Optional but recommended for custom data sets.
                    .setDataType(DataType.TYPE_SPEED)// Can't be omitted.
                    .setSamplingRate(1, TimeUnit.SECONDS).setAccuracyMode(SensorRequest.ACCURACY_MODE_HIGH)
                    .build(), mListener3)
            .setResultCallback(new ResultCallback<Status>() {
                @Override
                public void onResult(Status status) {
                    if (status.isSuccess()) {
                        Log.i(TAG, "Listener registered!");
                    } else {
                        Log.i(TAG, "Listener not registered.");
                    }
                }
            });

//添加一个监听器

mListener3 = new OnDataPointListener() {
        @Override
        public void onDataPoint(DataPoint dataPoint) {


           final float speed = dataPoint.getValue(Field.FIELD_SPEED).asFloat();

            runOnUiThread(new Runnable() {
                @Override
                public void run() {

                    Log.i(TAG, "In Speed" + speed );
                    speedTxtView.setText("" + speed );

                }
            });


        }

目前，我正在获取所有其他数据类型值，例如距离，心率，步数和当前活动，但无法获取用户的当前速度。我做得对吗？

坦

您可以尝试Google Fit Github存储库中的basichistorysessions示例。

样例代码：

  // Build a session read request
        SessionReadRequest readRequest = new SessionReadRequest.Builder()
                .setTimeInterval(startTime, endTime, TimeUnit.MILLISECONDS)
                .read(DataType.TYPE_SPEED)
                .setSessionName(SAMPLE_SESSION_NAME)
                .build();


// Invoke the Sessions API to fetch the session with the query and wait for the result
                    // of the read request.
                    SessionReadResult sessionReadResult =
                            Fitness.SessionsApi.readSession(mClient, readRequest)
                                    .await(1, TimeUnit.MINUTES);

                    // Get a list of the sessions that match the criteria to check the result.
                    Log.i(TAG, "Session read was successful. Number of returned sessions is: "
                            + sessionReadResult.getSessions().size());
                    for (Session session : sessionReadResult.getSessions()) {
                        // Process the session
                        dumpSession(session);

                        // Process the data sets for this session
                        List<DataSet> dataSets = sessionReadResult.getDataSet(session);
                        for (DataSet dataSet : dataSets) {
                            dumpDataSet(dataSet);
                        }
                    }