Swift: Use of unresolved Identifier. Target Membership - ios

Question

I have a Swift script below relating to Sleep Analysis.
Error:
View Controller has no member 'updateTime'.
I tried adding this target using file inspector and adding it to target membership, but the target itself won't show up, which is beyond weird. Any feedback will be greatly appreciated.
PS: Another error message not saying that 'error' is an unresolved identifier for an if != nil statement keeps popping up. Any help here, would also be highly appreciated.
import UIKit
import HealthKit
let healthStore = HKHealthStore()
class ViewController: UIViewController {
#IBOutlet var displayTimeLabel: UILabel!
var startTime = TimeInterval()
var timer:Timer = Timer()
var endTime: NSDate!
var alarmTime: NSDate!
func saveSleepAnalysis() {
//1. startTime(alarmTime) and endTime are NSDate Objects//
if let sleepType = HKObjectType.categoryType(forIdentifier: HKCategoryTypeIdentifier.sleepAnalysis) {
//we create a new object that we want to add into our Health app(This is our INBED object)//
let object1 = HKCategorySample(type:sleepType, value: HKCategoryValueSleepAnalysis.inBed.rawValue, start: self.alarmTime as Date, end: self.endTime as Date)
// Time to save the object//
healthStore.save(object1, withCompletion: { (success, errpr) -> Void in
if error != nil
{
return
}
if success {
print("My new data was saved in HealthKit")
} else {
//something happened again//
}
})
//This our ASLEEP object//
let object2 = HKCategorySample(type:sleepType, value: HKCategoryValueSleepAnalysis.asleep.rawValue, start: self.alarmTime as Date, end: self.endTime as Date)
//now we save our objects to our mainLibrary known as HealthStore
healthStore.save(object2, withCompletion: { (success, error) -> Void in
if error != nil {
//Something went wrong//
return
if success {
print("My new data (2: Asleep data) was saved into HealthKit")
} else {
//something happened again//
}
}
}
)}
func retrieveSleepAnalysis() {
//first, define our object type that we watn again in BOOLEAN FORMAT//
if let sleepType = HKObjectType.categoryType(forIdentifier: HKCategoryTypeIdentifier.sleepAnalysis) {
//use sortDescriptor to get teh recent data first: so from MostRecentData to PastData//
let sortDescriptor = NSSortDescriptor(key: HKSampleSortIdentifierEndDate, ascending: false)
//we create our query with a block completion to execute
let query = HKSampleQuery(sampleType: sleepType, predicate: nil, limit:30, sortDescriptors: [sortDescriptor]) { (query, tmpResult, error) -> Void in
if error != nil {
//something happends//
return
}
if let result = tmpResult {
//then i want the computer to do something with my data//
for item in result {
if let sample = item as? HKCategorySample {
let value = (sample.value == HKCategoryValueSleepAnalysis.inBed.rawValue) ? "InBed" : "Asleep"
print("Healthkit sleep: \(sample.startDate) \(sample.endDate) = value: \(value)")
}
}
}
}
//finally, we execute our query: Print out our output file //
healthStore.execute(query)
}
}
func viewDidLoad() {
super.viewDidLoad()
let typestoRead = Set([
HKObjectType.categoryType(forIdentifier: HKCategoryTypeIdentifier.sleepAnalysis)!
])
let typestoShare = Set([
HKObjectType.categoryType(forIdentifier: HKCategoryTypeIdentifier.sleepAnalysis)!
])
healthStore.requestAuthorization(toShare: typestoShare, read: typestoRead) { (success, error) -> Void in
if success == false {
NSLog(" Display not allowed")
}
}
}
func updateTime() {
let currentTime = NSDate.timeIntervalSinceReferenceDate
//Find the difference between current time and start time.
var elapsedTime: TimeInterval = currentTime - startTime
//calculate the minutes in elapsed time.
let minutes = UInt8(elapsedTime / 60.0)
elapsedTime -= (TimeInterval(minutes) * 60)
//calculate the seconds in elapsed time.
let seconds = UInt8(elapsedTime)
elapsedTime -= TimeInterval(seconds)
//find out the fraction of milliseconds to be displayed.
let fraction = UInt8(elapsedTime * 100)
//add the leading zero for minutes, seconds and millseconds and store them as string constants
let strMinutes = String(format: "%02d", minutes)
let strSeconds = String(format: "%02d", seconds)
let strFraction = String(format: "%02d", fraction)
//concatenate minuets, seconds and milliseconds as assign it to the UILabel
displayTimeLabel.text = "\(strMinutes):\(strSeconds):\(strFraction)"
}
func start(sender: AnyObject) {
alarmTime = NSDate()
if (!timer.isValid) {
let Selector : Selector = #selector(ViewController.updateTime)
timer = Timer.scheduledTimer(timeInterval: 0.01, target: self, selector: Selector, userInfo: nil, repeats: true)
startTime = NSDate.timeIntervalSinceReferenceDate
}
}
func stop(sender: AnyObject) {
endTime = NSDate()
saveSleepAnalysis()
retrieveSleepAnalysis()
timer.invalidate()
}
func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
}

Answer 1

Replace your code with this
import UIKit
import HealthKit
let healthStore = HKHealthStore()
class ViewController: UIViewController {
#IBOutlet var displayTimeLabel: UILabel!
var startTime = TimeInterval()
var timer:Timer = Timer()
var endTime: NSDate!
var alarmTime: NSDate!
func saveSleepAnalysis() {
//1. startTime(alarmTime) and endTime are NSDate Objects//
if let sleepType = HKObjectType.categoryType(forIdentifier: HKCategoryTypeIdentifier.sleepAnalysis) {
//we create a new object that we want to add into our Health app(This is our INBED object)//
let object1 = HKCategorySample(type:sleepType, value: HKCategoryValueSleepAnalysis.inBed.rawValue, start: self.alarmTime as Date, end: self.endTime as Date)
// Time to save the object//
healthStore.save(object1, withCompletion: { (success, errpr) -> Void in
if errpr != nil
{
return
}
if success {
print("My new data was saved in HealthKit")
} else {
//something happened again//
}
})
//This our ASLEEP object//
let object2 = HKCategorySample(type:sleepType, value: HKCategoryValueSleepAnalysis.asleep.rawValue, start: self.alarmTime as Date, end: self.endTime as Date)
//now we save our objects to our mainLibrary known as HealthStore
healthStore.save(object2, withCompletion: { (success, error) -> Void in
if error != nil {
//Something went wrong//
return
if success {
print("My new data (2: Asleep data) was saved into HealthKit")
} else {
//something happened again//
}
}
}
)}
}
func retrieveSleepAnalysis() {
//first, define our object type that we watn again in BOOLEAN FORMAT//
if let sleepType = HKObjectType.categoryType(forIdentifier: HKCategoryTypeIdentifier.sleepAnalysis) {
//use sortDescriptor to get teh recent data first: so from MostRecentData to PastData//
let sortDescriptor = NSSortDescriptor(key: HKSampleSortIdentifierEndDate, ascending: false)
//we create our query with a block completion to execute
let query = HKSampleQuery(sampleType: sleepType, predicate: nil, limit:30, sortDescriptors: [sortDescriptor]) { (query, tmpResult, error) -> Void in
if error != nil {
//something happends//
return
}
if let result = tmpResult {
//then i want the computer to do something with my data//
for item in result {
if let sample = item as? HKCategorySample {
let value = (sample.value == HKCategoryValueSleepAnalysis.inBed.rawValue) ? "InBed" : "Asleep"
print("Healthkit sleep: \(sample.startDate) \(sample.endDate) = value: \(value)")
}
}
}
}
//finally, we execute our query: Print out our output file //
healthStore.execute(query)
}
}
override func viewDidLoad() {
super.viewDidLoad()
let typestoRead = Set([
HKObjectType.categoryType(forIdentifier: HKCategoryTypeIdentifier.sleepAnalysis)!
])
let typestoShare = Set([
HKObjectType.categoryType(forIdentifier: HKCategoryTypeIdentifier.sleepAnalysis)!
])
healthStore.requestAuthorization(toShare: typestoShare, read: typestoRead) { (success, error) -> Void in
if success == false {
NSLog(" Display not allowed")
}
}
}
func updateTime() {
let currentTime = NSDate.timeIntervalSinceReferenceDate
//Find the difference between current time and start time.
var elapsedTime: TimeInterval = currentTime - startTime
//calculate the minutes in elapsed time.
let minutes = UInt8(elapsedTime / 60.0)
elapsedTime -= (TimeInterval(minutes) * 60)
//calculate the seconds in elapsed time.
let seconds = UInt8(elapsedTime)
elapsedTime -= TimeInterval(seconds)
//find out the fraction of milliseconds to be displayed.
let fraction = UInt8(elapsedTime * 100)
//add the leading zero for minutes, seconds and millseconds and store them as string constants
let strMinutes = String(format: "%02d", minutes)
let strSeconds = String(format: "%02d", seconds)
let strFraction = String(format: "%02d", fraction)
//concatenate minuets, seconds and milliseconds as assign it to the UILabel
displayTimeLabel.text = "\(strMinutes):\(strSeconds):\(strFraction)"
}
func start(sender: AnyObject) {
alarmTime = NSDate()
if (!timer.isValid) {
let Selector : Selector = #selector(ViewController.updateTime)
timer = Timer.scheduledTimer(timeInterval: 0.01, target: self, selector: Selector, userInfo: nil, repeats: true)
startTime = NSDate.timeIntervalSinceReferenceDate
}
}
func stop(sender: AnyObject) {
endTime = NSDate()
saveSleepAnalysis()
retrieveSleepAnalysis()
timer.invalidate()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}