Overview

The On-Device Memory feature automatically stores video measurements results locally on the device, enabling historical analysis and trend tracking. Measurement results are stored separately for each user ID provided during initialization.

The shared history structures retain the isCalibration field for wrapper compatibility. It is always false for Shen.AI (CE) measurements because calibration is not supported.

Accessing the history

Call getMeasurementResultsHistory() to retrieve measurements results history from local memory. If no measurement has finished successfully yet, a null value will be returned. Below is a summary of the returned structure:


class MeasurementResultsWithMetadata {
  MeasurementResults measurementResults;
  int epochTimestamp;
  bool isCalibration;
}
 
class MeasurementResultsHistory {
  List<MeasurementResultsWithMetadata?> history;
}
 
final history = await ShenaiSdk.getMeasurementResultsHistory();


import { getMeasurementResultsHistory } from "@shenai/react-native-sdk"
 
interface MeasurementResultsWithMetadata {
  measurementResults: MeasurementResults
  epochTimestamp: number
  isCalibration: boolean
}
 
interface MeasurementResultsHistory {
  history: MeasurementResultsWithMetadata[]
}
 
async function example() {
  const history: MeasurementResultsHistory = await getMeasurementResultsHistory()
}


interface MeasurementResultsWithMetadata {
  measurementResults: MeasurementResults
  epochTimestamp: number
  isCalibration: boolean
}
 
interface MeasurementResultsHistory {
  history: MeasurementResultsWithMetadata[]
}
 
const { value: history } = await ShenaiSdkCapacitor.getMeasurementResultsHistory()


public sealed class MeasurementResultsWithMetadata
{
    public MeasurementResults MeasurementResults { get; set; }
    public double EpochTimestamp { get; set; }
    public bool IsCalibration { get; set; }
}
 
public sealed class MeasurementResultsHistory
{
    public IReadOnlyList<MeasurementResultsWithMetadata> History { get; set; }
}
 
var history = await ShenaiSdk.GetMeasurementResultsHistoryAsync();


class MeasurementResultsHistory {
  var history: [MeasurementResultsWithMetadata]
}
 
class MeasurementResultsWithMetadata {
var measurementResults: MeasurementResults
var epochTimestamp: NSNumber
var isCalibration: Bool
}
 
let history = ShenaiSDK.getMeasurementResultsHistory()


class MeasurementResultsWithMetadata {
    public MeasurementResults measurementResults;
    public int epochTimestamp;
    public boolean isCalibration;
}
 
class MeasurementResultsHistory {
    public MeasurementResultsWithMetadata[] history;
}
 
MeasurementResultsHistory history = shenaiSDKHandler.getMeasurementResultsHistory();


interface MeasurementResultsWithMetadata {
  measurement_results: MeasurementResults
  epoch_timestamp: number
  is_calibration: boolean
}
 
interface MeasurementResultsHistory {
  history: MeasurementResultsWithMetadata[]
}
 
const history = shenaiSDK.getMeasurementResultsHistory()