---
title: "fetch(_:)"
framework: sensorkit
role: symbol
role_heading: Instance Method
path: "sensorkit/srsensorreader/fetch(_:)"
---

# fetch(_:)

Fetches the samples that a fetch request specifies.

## Declaration

```swift
func fetch(_ request: SRFetchRequest)
```

## Parameters

- `request`: An object that describes the device from which to retrieve samples, and samaple age of interest.

## Discussion

Discussion An app calls this function to access data for the caller’s sensor. Upon success, the framework delivers results in the form of samples via the delegate’s sensorReader(_:fetching:didFetchResult:) callback. The framework invokes the delegate multiple times if this function results in multiple samples. The framework returns sensor data only for the argument fetch-object’s device, and that’s dated only within the argument fetch-object’s time window. Within that window, this function returns only the data that the framework recorded (see startRecording()), and that the framework hasn’t deleted (see SRDeletionRecord).

## See Also

### Reading recorded data

- [fetchDevices()](sensorkit/srsensorreader/fetchdevices().md)
- [SRDevice](sensorkit/srdevice.md)