这段代码出现两个错误：
“找不到类型 'MKPlacemark' 的初始化程序，它接受类型为'（坐标：CLLocationCoordinate2D，addressDictionary：[NSString：String]）'的参数列表
和
“不能使用类型为'（String，completionHandler：（[AnyObject？]！，NSError？）-> _）'的参数列表调用'geocodeAddressstring'
我试图在这里和那里放置选项，并阅读它可能会解决问题，但没有奏效。
我应该对我的代码进行哪些更改以修复这些错误并使我的 ViewController 工作？
import UIKit
import CoreLocation
import AddressBook
import Contacts
import MapKit
class ViewController: UIViewController {
@IBOutlet weak var address: UITextField!
@IBOutlet weak var city: UITextField!
@IBOutlet weak var province: UITextField!
@IBOutlet weak var zip: UITextField!
var coords: CLLocationCoordinate2D?
@IBAction func getDirections(sender: UIButton) {
let geoCoder = CLGeocoder()
let addressString = "\(address.text) \(city.text) \(province.text) \(zip.text)"
geoCoder.geocodeAddressString(addressString, completionHandler: {(placemarks: [AnyObject?]!, error: NSError?) in
if error != nil {
print("Geocode failed with error: \(error?.localizedDescription)")
} else if placemarks?.count > 0 {
let placemark = placemarks[0] as! CLPlacemark
let location = placemark.location
self.coords = location.coordinate
self.showMap()
}
})
}
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func showMap() {
let addressDict =[kABPersonAddressStreetKey as NSString: address.text!,
kABPersonAddressCityKey: city.text!,
kABPersonAddressStateKey: province.text!,
kABPersonAddressZIPKey: zip.text! ]
let place = MKPlacemark(coordinate: coords!, addressDictionary: addressDict)
let mapItem = MKMapItem(placemark: place)
let options = [MKLaunchOptionsDirectionsModeDriving]
mapItem.openInMapsWithLaunchOptions(options)
}
}