I want SensorKit data for research purposes in my current application. I have applied for and received permission from Apple to access SensorKit data.
During implementation, I encountered an issue in which no data was being retrieved despite granting all the necessary permissions.
I am using did CompleteFetch & didFetchResult delegate methods for retrieving data from Sensorkit. CompleteFetch method calls but where I can find different event data like Device usage, Ambient Light, etc? & didFetchResult method does not call.
Methods I am using:
1. func sensorReader(_ reader: SRSensorReader, didCompleteFetch fetchRequest: SRFetchRequest)
2. func sensorReader(_ reader: SRSensorReader, fetching fetchRequest: SRFetchRequest, didFetchResult result: SRFetchResult<AnyObject>) -> Bool
Could anyone please assist me in resolving this issue? Any guidance or troubleshooting steps would be greatly appreciated.
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I have received permission from Apple to access SensorKit data for my app. I have granted all necessary permissions, but no data is being retrieved.
The didCompleteFetch method is being called, but I’m unsure where to find event data like Device Usage and Ambient Light. Additionally, the didFetchResult method is never called.
Could anyone please assist me in resolving this issue? Any guidance or troubleshooting steps would be greatly appreciated.
import SensorKit
class ViewController: UIViewController, SRSensorReaderDelegate {
let store = SRSensorReader(sensor: .deviceUsageReport)
override func viewDidLoad() {
super.viewDidLoad()
requestSensorAuthorization()
}
func requestSensorAuthorization() {
var sensors: Set<SRSensor> = [
.accelerometer,
.deviceUsageReport,
.messagesUsageReport,
.visits,
.keyboardMetrics,
.phoneUsageReport,
.ambientLightSensor
]
if #available(iOS 16.4, *) {
sensors.insert(.mediaEvents)
}
SRSensorReader.requestAuthorization(sensors: sensors) { error in
if let error = error {
print("Authorization failed: \(error.localizedDescription)")
} else {
self.store.startRecording()
self.requestSensorData()
print("Authorization granted for requested sensors.")
}
}
}
func requestSensorData() {
let fromTime = SRAbsoluteTime.fromCFAbsoluteTime(_cf: Date().addingTimeInterval(-60 * 60).timeIntervalSinceReferenceDate)
let toTime = SRAbsoluteTime.fromCFAbsoluteTime(_cf: Date().timeIntervalSinceReferenceDate)
let request = SRFetchRequest()
request.from = fromTime
request.to = toTime
request.device = SRDevice.current
store.fetch(request)
store.delegate = self
}
func sensorReader(_ reader: SRSensorReader, didCompleteFetch fetchRequest: SRFetchRequest) {
print("Fetch request completed: \(fetchRequest.from) to \(fetchRequest.to)")
Task {
do {
let samples = try await reader.fetch(fetchRequest)
print("Samples count: \(samples)")
} catch {
print("Error Fetching Data: \(error.localizedDescription)")
}
}
}
func sensorReader(_ reader: SRSensorReader, fetching fetchRequest: SRFetchRequest, didFetchResult result: SRFetchResult<AnyObject>) -> Bool {
print(result)
return true
}
}