如何获取我的位置数据并将其放入iMessage的变量中



昨天我在stack Overflow中问了一个问题,关于如何在消息体中嵌入我的当前位置

我得到了答案,我纠正了我的代码

我的代码在控制台中运行得很好,但我不知道如何从displayLocationInfo函数中获取数据并将其存储在变量中;然后在消息正文中放入变量。

我是iPhone开发的新手

有什么帮助吗?

class Location: NSObject,CLLocationManagerDelegate {

    var locationManager = CLLocationManager()
    var currentLocation : CLPlacemark?
    var detectLocation : CLLocationManager?
    var locManager = CLLocationManager()

     func viewDidLoad()
    {
        viewDidLoad()
        self.locationManager.delegate = self
        self.locationManager.desiredAccuracy = kCLLocationAccuracyBest
        self.locationManager.requestWhenInUseAuthorization()
        self.locationManager.startUpdatingLocation()
    }

    func updateLocation()
    {
          locationManager.startUpdatingLocation()
    }

    func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
        locationManager.stopUpdatingLocation()

        CLGeocoder().reverseGeocodeLocation(manager.location!, completionHandler: {(placemarks, error)->Void in
            if (error != nil)
            {
                print("Error: " + error!.localizedDescription)
                return
            }
            if placemarks!.count > 0
            {
                let pm = placemarks![0]
                self.displayLocationInfo(pm)
            }
            else
            {
                print("Error with the data.")
            }
        })
    }
    func displayLocationInfo(placemark: CLPlacemark)
    {
        self.locationManager.stopUpdatingLocation()
        print(placemark.locality)
        print(placemark.postalCode)
        print(placemark.administrativeArea)
        print(placemark.country)
    }
    func locationManager(manager: CLLocationManager, didFailWithError error: NSError)
    {
        print("Error: " + error.localizedDescription)
    }
}
import MessageUI

让你的班级成为正确的代表(这是为iMessage准备的):

MFMessageComposeViewControllerDelegate

制作一些全局变量来存储您想要存储的字段(当您在当前代码中打印到控制台时设置它们):

class Location: NSObject,CLLocationManagerDelegate, MFMessageComposeViewControllerDelegate {

var locationManager = CLLocationManager()
var currentLocation : CLPlacemark?
var detectLocation : CLLocationManager?
var locManager = CLLocationManager()
//put your variables for your message below:
//you should use optionals (?) here but to keep it simple I'm assigning ""
var locality = ""
var postalCode = ""
//set your variables when you are currently printing them in the console:
func displayLocationInfo(placemark: CLPlacemark)
{
    self.locationManager.stopUpdatingLocation()
    print(placemark.locality)
    print(placemark.postalCode)
    print(placemark.administrativeArea)
    print(placemark.country)
    //here I set postalcode to be used in the message later
    postalCode = placemark.postalCode
}
//call this function when the user hits a send button
func messageAction() {        
    if MFMessageComposeViewController.canSendText() {
        let messageVC = MFMessageComposeViewController()
        messageVC.messageComposeDelegate = self    
        messageVC.body = "(postalCode) is my postalCode"
        self.presentViewController(messageVC, animated: true, completion: nil)
    }
    else {
        print("User hasn't setup Messages.app")
    }
}
//if you have any code you want to run when the message is done sending put it in
func messageComposeViewController(controller: MFMessageComposeViewController, didFinishWithResult result: MessageComposeResult) {
self.dismissViewControllerAnimated(true, completion: nil)
    switch (result.rawValue) {
    case MessageComposeResultSent.rawValue:
        print("Message sent success")
    default:
        return
    }

}

另一种选择是使messageAction()方法具有包含在消息中的参数。比如messageAction(postalCode:String?,locality:String™,municity:String®)等。这实际上取决于你是否想在其他方法中全局使用这些值。

回复发帖人的问题:

设置一个全局变量(在上面的大型代码示例中查找此行)。它使postalCode成为全局变量。

var postalCode = ""

在displayLocationInfo()中,将此变量设置为具有位置值:

postalCode = placemark.postalCode

在messageAction()中,将消息的正文设置为使用该变量:

let messageVC = MFMessageComposeViewController()
messageVC.body = "(postalCode) is my postalCode"

这将在短信窗口中显示一条消息,上面写着"12345是我的邮政编码"。

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