QueryDataTask.java

  private class QueryDataTask extends AsyncTask<Void, Void, DataReadResult> {
        @Override
        protected void onPreExecute() {
            super.onPreExecute();
            Log.d(TAG, "Executing query task");
        }

        protected DataReadResult doInBackground(Void... params) {
            Calendar date = new GregorianCalendar();
            date.set(Calendar.HOUR_OF_DAY, 0);
            date.set(Calendar.MINUTE, 0);
            date.set(Calendar.SECOND, 0);
            date.set(Calendar.MILLISECOND, 0);
            date.add(Calendar.DAY_OF_MONTH, 1);
            date.add(Calendar.SECOND, -1);
            long endTime = date.getTimeInMillis();

            date.add(Calendar.DAY_OF_MONTH, -15);
            long startTime = date.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)
              .build();
              
            Log.d(TAG, "Sending Google Fit Task");
            return Fitness.HistoryApi.readData(mClient, readRequest).await(1, TimeUnit.MINUTES);
        }

        @Override
        protected void onPostExecute(DataReadResult dataReadResult) {
            Log.d(TAG, "Post Execute Google Fit Task");
        }
    }