Retrieves a dataset for a given datasource and time range defined by
startTime and endTime.
Refer to https://developers.google.com/fit/rest/v1/datasets for full documentation.
GetFitDataset(token, datasource, startTime, endTime)- OAuth 2.0 access token
- Data Stream ID
- Start time for dataset. Date datatype is required
- End time for dataset. Date datatype is required