Time Group Unit and Format

Time group unit	Format
MINUTELY	yyyy-mm-dd hh:mm (e.g. 2015-10-09 18:17)
HOURLY	yyyy-mm-dd hh (e.g. 2015-10-09 18)
DAILY	yyyy-mm-dd (e.g. 2015-10-09)
WEEKLY	yyyy-ww (e.g. 2015-41)
MONTHLY	yyyy-mm (e.g. 2015-10)

Getting Grouped Aggregate Result with Time Group Unit

If you requests hourly average steps on today, you can set the time group unit for the aggregate request.

 public class HealthDataResolverExample {

     // The state of connection
     private HealthDataStore mStore;

     private void getHourlySteps(long startTime, long endTime) {
         HealthDataResolver resolver = new HealthDataResolver(mStore, null);

         HealthDataResolver.AggregateRequest request = new HealthDataResolver.AggregateRequest.Builder()
             .setDataType(HealthConstants.StepCount.HEALTH_DATA_TYPE)
             .setLocalTimeRange(HealthConstants.StepCount.START_TIME, HealthConstants.StepCount.TIME_OFFSET,
                                                                        startTime, endTime)
             .addFunction(HealthDataResolver.AggregateRequest.AggregateFunction.AVG,
                 HealthConstants.StepCount.COUNT, "average")
             .setTimeGroup(HealthDataResolver.AggregateRequest.TimeGroupUnit.HOURLY, 1,
                 HealthConstants.StepCount.START_TIME,
                 HealthConstants.StepCount.TIME_OFFSET, "hour")
             .build();

         try {
             resolver.aggregate(request).setResultListener(mStepAggrResult);
         } catch (Exception e) {
             Log.d(APP_TAG, "Aggregating health data fails.");
         }
     }

The retrieved result can be checked:

     private final HealthResultHolder.ResultListener<HealthDataResolver.AggregateResult> mStepAggrResult=
         new HealthResultHolder.ResultListener<HealthDataResolver.AggregateResult>() {

         @Override
         public void onResult(HealthDataResolver.AggregateResult result) {

             try {
                 Iterator<HealthData> iterator = result.iterator();

                 if (iterator.hasNext()) {
                     HealthData data = iterator.next();

                     // Gets hour information as yyyy-mm-dd hh, e.g. 2015-10-09 18
                     String hour = data.getString("hour");

                     // Gets the average value for the current cursor
                     float avr = data.getFloat("average");

                     // ...
                 }
             } finally {
                 result.close();
             }
         }
     };
 }