相关疑难解决方法(0)

使用运行iOS 10.1.1的iPhone6,Xcode 8.1,执行以下我不断获得的Swift代码

无法检索CarrierName

在我第一次ViewController加载之前出现错误消息.我搜索了类似(但不是相同)CarrierName问题的解决方案.他们中的大多数人建议进口CoreTelephony.我添加了导入, CoreTelephony但我仍然得到相同的错误.下面是viewDidLoad控制台输出后面显示的代码段.对此错误的任何见解？

//  ViewController.swift
//  MapLocator

import UIKit
import MapKit
import CoreLocation
import CoreTelephony


class ViewController: UIViewController, UISearchBarDelegate, MKMapViewDelegate,UINavigationControllerDelegate {
    var searchController:UISearchController!
    var annotation:MKAnnotation!
    var localSearchRequest1:MKLocalSearchRequest!
    var localSearchRequest2:MKLocalSearchRequest!
    var localSearch1:MKLocalSearch!
    var localSearch2:MKLocalSearch!
    var localSearchResponse1:MKLocalSearchResponse!
    var localSearchResponse2:MKLocalSearchResponse!
    var error:NSError!
    var pointAnnotation:MKPointAnnotation!
    var pinAnnotationView:MKPinAnnotationView!
    var placeMark1:MKPlacemark!
    var myRoute : MKRoute?
    var coord1 : CLLocationCoordinate2D!
    var coord2 : CLLocationCoordinate2D!
    //    var newPt : MKMapPoint!

    //    var lineArrayPtr = [MKMapPoint]()
    var …