问题
I need to update my location outside the func locationManager
I have 2 labels that are being updated every second, and a call to an API from a HTTP POST Request. The problem is when I call the API (when I press the startButton, only the first value is passed :-/
class PressStartViewController: UIViewController,CLLocationManagerDelegate {
var manager: CLLocationManager!
var userLocation: CLLocation! = nil
var timer = NSTimer()
var time = 0
var minute = 0
@IBOutlet var bearingLabel: UILabel!
@IBOutlet var speedlabel: UILabel!
@IBOutlet var timerLabel: UILabel!
@IBOutlet var minuteLabel: UILabel!
@IBOutlet var startButton: UIButton!
@IBOutlet var startImage: UIImageView!
@IBOutlet var finishImage: UIImageView!
@IBOutlet var resumeImage: UIImageView!
func increaseTimer() {
time++
if time > 9 {
timerLabel.text = "\(time)"
} else {
timerLabel.text = "0\(time)"
}
if time > 59 {
time = 0
timerLabel.text = "00"
minute++
if minute > 9 {
minuteLabel.text = "\(minute)"
} else {
minuteLabel.text = "0\(minute)"
}
}
}
@IBAction func start(sender: AnyObject) {
timer = NSTimer.scheduledTimerWithTimeInterval(1, target: self, selector: Selector("increaseTimer"), userInfo: nil, repeats: true)
startImage.hidden = true
resumeImage.hidden = false
finishImage.hidden = false
sendPosition()
}
@IBAction func resume(sender: AnyObject) {
timer.invalidate()
startImage.hidden = false
resumeImage.hidden = true
finishImage.hidden = true
}
@IBAction func finish(sender: AnyObject) {
timer.invalidate()
time = 0
minute = 0
timerLabel.text = "00"
minuteLabel.text = "00"
}
override func viewDidLoad() {
super.viewDidLoad()
// print ("ent viewdidload")
// Do any additional setup after loading the view.
//print (userId!)
manager = CLLocationManager()
manager.delegate = self
manager.desiredAccuracy = kCLLocationAccuracyBest
manager.requestAlwaysAuthorization()
manager.startUpdatingHeading()
manager.startUpdatingLocation()
resumeImage.hidden = true
finishImage.hidden = true
}
func locationManager(manager: CLLocationManager, didUpdateHeading newHeading: CLHeading) {
let heading = newHeading.magneticHeading
self.bearingLabel.text = String(format: "%.0fº",heading)
}
func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
userLocation = locations[0]
let bearing = userLocation.course
let knots = userLocation.speed
//self.bearingLabel.text = String(format: "%.0fº",bearing)
self.speedlabel.text = String(format: "%.1f knots",knots * 1.94384)
// print(locations)
}
func sendPosition() {
manager.startUpdatingLocation()
manager.startUpdatingHeading()
let Speed = userLocation.speed
let Bearing = userLocation.course
let Latitude = userLocation.coordinate.latitude
let Longitude = userLocation.coordinate.longitude
let clientTimestamp = NSDate().iso8601
let BoxId = UIDevice.currentDevice().identifierForVendor!.UUIDString
let SessionId = NSUUID().UUIDString
let Bearer = userId!
let spinningActivity = MBProgressHUD.showHUDAddedTo(self.view, animated: true)
spinningActivity.labelText = "Loading"
spinningActivity.detailsLabelText = "Please wait"
let myUrl = NSURL(string: "https://www.example.com/api/v1/positions/");
let request = NSMutableURLRequest(URL:myUrl!,cachePolicy: .UseProtocolCachePolicy,
timeoutInterval: 10.0);
request.HTTPMethod = "POST";
let postString = "Speed=\(Speed)&Bearing=\(Bearing)&Latitude=\(Latitude)&Longitude=\(Longitude)&clientTimestamp=\(clientTimestamp)&BoxId=\(BoxId)&SessionId=\(SessionId)"
//print (postString)
request.HTTPBody = postString.dataUsingEncoding(NSUTF8StringEncoding);
request.setValue("Bearer \(Bearer)", forHTTPHeaderField: "Authorization")
/////////////////
print (Bearer)
//print (request)
NSURLSession.sharedSession().dataTaskWithRequest(request, completionHandler: { (data:NSData?, response:NSURLResponse?, error:NSError?) -> Void in
print (response!)
dispatch_async(dispatch_get_main_queue())
{
spinningActivity.hide(true)
if(error != nil)
{
//Display an alert message
let myAlert = UIAlertController(title: "Alert", message: error!.localizedDescription, preferredStyle: UIAlertControllerStyle.Alert);
let okAction = UIAlertAction(title: "OK1", style: UIAlertActionStyle.Default, handler:nil)
myAlert.addAction(okAction);
self.presentViewController(myAlert, animated: true, completion: nil)
return
}
do {
print ("linha 1")
let json = try NSJSONSerialization.JSONObjectWithData(data!, options: .MutableContainers) as? NSDictionary
if let parseJSON = json {
print ("linha 3")
// let userId = parseJSON["access_token"] as? String
// if(userId != nil)
// {
// print ("linha 4")
// // NSUserDefaults.standardUserDefaults().setObject(parseJSON["userFirstName"], forKey: "userFirstName")
// // NSUserDefaults.standardUserDefaults().setObject(parseJSON["userLastName"], forKey: "userLastName")
// NSUserDefaults.standardUserDefaults().setObject(parseJSON["access_token"], forKey: "userId")
// NSUserDefaults.standardUserDefaults().synchronize()
//
// // take user to a protected page
// /*
// let mainPage = self.storyboard?.instantiateViewControllerWithIdentifier("MainPageViewController") as! MainPageViewController
//
// let mainPageNav = UINavigationController(rootViewController: mainPage)
// let appDelegate = UIApplication.sharedApplication().delegate
//
// appDelegate?.window??.rootViewController = mainPageNav
// */
//
// let appDelegate = UIApplication.sharedApplication().delegate as! AppDelegate
//
// appDelegate.buildNavigationDrawer()
//
//
// } else {
// print ("linha 5")
// // display an alert message
// let userMessage = parseJSON["message"] as? String
// let myAlert = UIAlertController(title: "Alert", message: userMessage, preferredStyle: UIAlertControllerStyle.Alert);
// let okAction = UIAlertAction(title: "OK2", style: UIAlertActionStyle.Default, handler:nil)
// myAlert.addAction(okAction);
// self.presentViewController(myAlert, animated: true, completion: nil)
// }
// print ("linha 6")
}
} catch
{
print(error)
}
}
}).resume()
}
回答1:
I did it myself, I had a new timer and call sendPosition every x seconds
It's working
来源：https://stackoverflow.com/questions/39757134/update-cllocation-manager-on-another-method