谷歌适合1天历史

Question

我尝试从没有安装GFit应用程序的情况下从Google Fit获取数据，在该应用程序中，我正在获取当天的总操作量。我如何获得整整1天的开始时间和结束时间（即时间序列）的步骤。我想像iOS中的健康应用程序一样检索具有日期和时间的全日历史记录。以下是我尝试不返回任何内容的代码段。如果有人对此有解决方案，那将是很大的帮助。

private void showSteps() {
        Calendar cal = Calendar.getInstance();
        Date now = new Date();
        cal.setTime(now);
        long endTime = cal.getTimeInMillis();
        cal.add(Calendar.DAY_OF_WEEK, -1);
        long startTime = cal.getTimeInMillis();

        DataReadRequest readRequest = new DataReadRequest.Builder()
                .aggregate(DataType.TYPE_STEP_COUNT_DELTA, DataType.AGGREGATE_STEP_COUNT_DELTA)
                .bucketByTime(1, TimeUnit.DAYS)
                .setTimeRange(startTime, endTime, TimeUnit.MILLISECONDS)
                .enableServerQueries()
                .build();

        DataReadResult dataReadResult = Fitness.HistoryApi.readData(mFitnessClient, readRequest).await(1, TimeUnit.MINUTES);


        if (dataReadResult.getBuckets().size() > 0) {
            Log.i(TAG, "Number of returned buckets of DataSets is: "
                    + dataReadResult.getBuckets().size());
            for (Bucket bucket : dataReadResult.getBuckets()) {
                List<DataSet> dataSets = bucket.getDataSets();
                for (DataSet dataSet : dataSets) {
                    Log.i(TAG, "Data returned for Data type: " + dataSet.getDataType().getName());
                    SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");

                    for (DataPoint dp : dataSet.getDataPoints()) {
                        Log.i(TAG, "Data point:");
                        Log.i(TAG, "\tType: " + dp.getDataType().getName());
                        Log.i(TAG, "\tStart: " + dateFormat.format(dp.getStartTime(TimeUnit.MILLISECONDS)));
                        Log.i(TAG, "\tEnd: " + dateFormat.format(dp.getEndTime(TimeUnit.MILLISECONDS)));
                        for(Field field : dp.getDataType().getFields()) {
                            Log.i(TAG, "\tField: " + field.getName() +
                                    " Value: " + dp.getValue(field));
                        }
                    }
                }
            }
        } else if (dataReadResult.getDataSets().size() > 0) {
            Log.i(TAG, "Number of returned DataSets is: "
                    + dataReadResult.getDataSets().size());
            for (DataSet dataSet : dataReadResult.getDataSets()) {
                Log.i(TAG, "Data returned for Data type: " + dataSet.getDataType().getName());
                SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");

                for (DataPoint dp : dataSet.getDataPoints()) {
                    Log.i(TAG, "Data point:");
                    Log.i(TAG, "\tType: " + dp.getDataType().getName());
                    Log.i(TAG, "\tStart: " + dateFormat.format(dp.getStartTime(TimeUnit.MILLISECONDS)));
                    Log.i(TAG, "\tEnd: " + dateFormat.format(dp.getEndTime(TimeUnit.MILLISECONDS)));
                    for (Field field : dp.getDataType().getFields()) {
                        Log.i(TAG, "\tField: " + field.getName() +
                                " Value: " + dp.getValue(field));
                    }
                }
            }
        }
    }  

谢谢。