```
public interface SRSensorReaderDelegate
```
API-Since: 14.0

Method Summary

All Methods Instance Methods Default Methods
Modifier and Type	Method	Description
`default void`	`sensorReaderDidChangeAuthorizationStatus(@NotNull SRSensorReader reader, long authorizationStatus)`	Invoked when authorization status has changed
`default void`	`sensorReaderDidCompleteFetch(@NotNull SRSensorReader reader, @NotNull SRFetchRequest fetchRequest)`	Invoked when a fetch has been completed successfully
`default void`	`sensorReaderDidFetchDevices(@NotNull SRSensorReader reader, @NotNull NSArray<? extends SRDevice> devices)`
`default void`	`sensorReaderDidStopRecording(@NotNull SRSensorReader reader)`	Invoked after a SRSensorReader has request that recording be stopped for a sensor
`default void`	`sensorReaderFetchDevicesDidFailWithError(@NotNull SRSensorReader reader, @NotNull NSError error)`
`default boolean`	`sensorReaderFetchingRequestDidFetchResult(@NotNull SRSensorReader reader, @NotNull SRFetchRequest fetchRequest, @NotNull SRFetchResult<?> result)`	Invoked when a sample has been fetched [@description] This callback can be called multiple times when there are multiple results.
`default void`	`sensorReaderFetchingRequestFailedWithError(@NotNull SRSensorReader reader, @NotNull SRFetchRequest fetchRequest, @NotNull NSError error)`	Invoked when a fetch has completed with an error
`default void`	`sensorReaderStartRecordingFailedWithError(@NotNull SRSensorReader reader, @NotNull NSError error)`	Invoked if there was an error starting recording for a given sensor
`default void`	`sensorReaderStopRecordingFailedWithError(@NotNull SRSensorReader reader, @NotNull NSError error)`	Invoked if there was an error starting recording for a given sensor
`default void`	`sensorReaderWillStartRecording(@NotNull SRSensorReader reader)`	Invoked after a SRSensorReader has request that recording be started for a sensor

Method Detail

sensorReaderDidChangeAuthorizationStatus

default void sensorReaderDidChangeAuthorizationStatus(@NotNull
                                                      @NotNull SRSensorReader reader,
                                                      long authorizationStatus)

Invoked when authorization status has changed

sensorReaderDidCompleteFetch

default void sensorReaderDidCompleteFetch(@NotNull
                                          @NotNull SRSensorReader reader,
                                          @NotNull
                                          @NotNull SRFetchRequest fetchRequest)

Invoked when a fetch has been completed successfully

sensorReaderDidFetchDevices

default void sensorReaderDidFetchDevices(@NotNull
                                         @NotNull SRSensorReader reader,
                                         @NotNull
                                         @NotNull NSArray<? extends SRDevice> devices)

sensorReaderFetchDevicesDidFailWithError

default void sensorReaderFetchDevicesDidFailWithError(@NotNull
                                                      @NotNull SRSensorReader reader,
                                                      @NotNull
                                                      @NotNull NSError error)

sensorReaderFetchingRequestDidFetchResult
```
default boolean sensorReaderFetchingRequestDidFetchResult(@NotNull
                                                          @NotNull SRSensorReader reader,
                                                          @NotNull
                                                          @NotNull SRFetchRequest fetchRequest,
                                                          @NotNull
                                                          @NotNull SRFetchResult<?> result)
```
Invoked when a sample has been fetched [@description] This callback can be called multiple times when there are multiple results. [@note] The fetchResult is not valid after the callback is complete. If the caller needs to access the result at a later time, it must be copied not merely retained

Parameters:

fetchRequest - The request corresponding to the this result

result - One result of the fetch. The caller is expected to know what type of sample is returned.

Returns:

The delegate should return YES if the fetch should continue, NO if the fetch should stop

sensorReaderFetchingRequestFailedWithError

default void sensorReaderFetchingRequestFailedWithError(@NotNull
                                                        @NotNull SRSensorReader reader,
                                                        @NotNull
                                                        @NotNull SRFetchRequest fetchRequest,
                                                        @NotNull
                                                        @NotNull NSError error)

Invoked when a fetch has completed with an error

sensorReaderStartRecordingFailedWithError

default void sensorReaderStartRecordingFailedWithError(@NotNull
                                                       @NotNull SRSensorReader reader,
                                                       @NotNull
                                                       @NotNull NSError error)

Invoked if there was an error starting recording for a given sensor

sensorReaderStopRecordingFailedWithError

default void sensorReaderStopRecordingFailedWithError(@NotNull
                                                      @NotNull SRSensorReader reader,
                                                      @NotNull
                                                      @NotNull NSError error)

Invoked if there was an error starting recording for a given sensor

sensorReaderDidStopRecording

default void sensorReaderDidStopRecording(@NotNull
                                          @NotNull SRSensorReader reader)

Invoked after a SRSensorReader has request that recording be stopped for a sensor

sensorReaderWillStartRecording

default void sensorReaderWillStartRecording(@NotNull
                                            @NotNull SRSensorReader reader)

Invoked after a SRSensorReader has request that recording be started for a sensor

Interface SRSensorReaderDelegate