[IOS]整合google map并获取当前位置

1.下载Google map的sdk,详情参考:

Get Started

2.准备好SDK后,展示map这些问题都不大,稍微难点的是定位当前位置

可以参考google的git tutorial:

https://github.com/googlemaps/maps-sdk-for-ios-samples/tree/master/tutorials

 

同时可以参考:

iOS之集成GoogleMap(定位、搜索)需要注意的事:http://www.cocoachina.com/cms/wap.php?action=article&id=21868

3.我的示例代码:

import UIKit
import GoogleMaps
import GooglePlaces

let screenH = UIScreen.main.bounds.size.height
let screenW = UIScreen.main.bounds.size.width

class BookController: UIViewController,UITableViewDelegate,UITableViewDataSource {
    
    //MARK:UI widget
    @IBOutlet weak var googleMapView: UIView!
    @IBOutlet weak var merchantTable: UITableView!
    @IBOutlet weak var searchBarView: UIView!
    
    //MARK:Others
    var merchantList: Array<MerchantBookDetail> = []
    
    //MARK: Google map
    var placesClient: GMSPlacesClient!
    var locationManager = CLLocationManager()
    var currentLocation: CLLocation?
    var mapView: GMSMapView?
    var zoomLevel: Float = 16.0
    
    // An array to hold the list of likely places.
    var likelyPlaces: [GMSPlace] = []
    
    // The currently selected place.
    var selectedPlace: GMSPlace?
    
    // A default location to use when location permission is not granted.
    let defaultLocation = CLLocation(latitude: -33.869405, longitude: 151.199)
    
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
        initData()
        initView()
        
    }

    func initData()  {
        
        merchantList = initMerchant()
        
        placesClient = GMSPlacesClient.shared()
        // Initialize the location manager.
        locationManager = CLLocationManager()
        locationManager.desiredAccuracy = kCLLocationAccuracyBest
        locationManager.requestAlwaysAuthorization()
        locationManager.distanceFilter = 50
        locationManager.startUpdatingLocation()
        locationManager.delegate = self
        
    }
    
    func initView()  {
        loadGoogleMap()
        
        //table
        merchantTable.delegate = self
        merchantTable.dataSource = self
        merchantTable.separatorStyle = UITableViewCellSeparatorStyle.none
        
        
    }
    
    func initMerchant() -> Array<MerchantBookDetail> {
        let merchant_one = MerchantBookDetail(merchant: "般咸道35号地下\n电话:2297 3377")
        let merchant_two = MerchantBookDetail(merchant: "尖沙咀金马伦道12号\n恒信商业大厦l字全层\n电话:3422 8855")
        
        let merchantList : [MerchantBookDetail] = [merchant_one,merchant_two];
        
        return merchantList
    }
    
    // Update the map once the user has made their selection.
    @IBAction func unwindToMain(segue: UIStoryboardSegue) {
        // Clear the map.
        mapView?.clear()
        
        // Add a marker to the map.
        if selectedPlace != nil {
            let marker = GMSMarker(position: (self.selectedPlace?.coordinate)!)
            marker.title = selectedPlace?.name
            marker.snippet = selectedPlace?.formattedAddress
            marker.map = mapView
        }
        
        listLikelyPlaces()
    }
    
    // Populate the array with the list of likely places.
    func listLikelyPlaces() {
        // Clean up from previous sessions.
        likelyPlaces.removeAll()
        
        placesClient.currentPlace(callback: { (placeLikelihoods, error) -> Void in
            if let error = error {
                // TODO: Handle the error.
                print("Current Place error: \(error.localizedDescription)")
                return
            }
            
            // Get likely places and add to the list.
            if let likelihoodList = placeLikelihoods {
                for likelihood in likelihoodList.likelihoods {
                    let place = likelihood.place
                    self.likelyPlaces.append(place)
                }
            }
        })
    }
    
    
    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }
    
    @IBAction func selectBtnAction(_ sender: Any) {
        
        let bookSelectVC:BookSelectController = UIStoryboard.init(name: "Book", bundle: nil).instantiateViewController(withIdentifier: "book-select") as! BookSelectController
        
        self.navigationController?.pushViewController(bookSelectVC, animated: true)
        
    }
    
     func loadGoogleMap() {
        // Create a GMSCameraPosition that tells the map to display the
        let camera = GMSCameraPosition.camera(withLatitude: defaultLocation.coordinate.latitude,
                                              longitude: defaultLocation.coordinate.longitude,
                                              zoom: zoomLevel)
        let rect = CGRect(x: 0, y: 0, width: googleMapView.frame.width, height: googleMapView.frame.height)
        mapView = GMSMapView.map(withFrame: rect, camera: camera)
        mapView?.settings.myLocationButton = true
        mapView?.autoresizingMask = [.flexibleWidth, .flexibleHeight]
        mapView?.isMyLocationEnabled = true
        mapView?.settings.compassButton = true
        googleMapView.backgroundColor = UIColor.clear
        // Add the map to the view, hide it until we've got a location update.
        googleMapView.addSubview(mapView!)
//        mapView?.isHidden = true
        listLikelyPlaces()
        
        googleMapView.addSubview(searchBarView)
        
        
    }

    func safeAreaInsetmap(view: UIView) -> UIEdgeInsets {
        if #available(iOS 11, *) {
            return view.safeAreaInsets
        }
        return UIEdgeInsets.zero
    }
    
    //MARK:table view API
    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return merchantList.count
    }
    
    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let row = indexPath.row
        let cellId = "book_map_cell"
        let cell: BookMapTableCellTableViewCell = tableView.dequeueReusableCell(withIdentifier: cellId, for: indexPath) as! BookMapTableCellTableViewCell
        
        let merchant = merchantList[row]
        
        cell.merchantDetail.text = merchant.merchantDetail
        cell.merchantImage.image = UIImage.init(named: "merchantImage_\(row+1)")
        
        return cell
    }
}


// Delegates to handle events for the location manager.
extension  BookController: CLLocationManagerDelegate {
    
    // Handle incoming location events.
    func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
        let location: CLLocation = locations.last!
        print("Location: \(location)")
        
        let camera = GMSCameraPosition.camera(withLatitude: location.coordinate.latitude,
                                              longitude: location.coordinate.longitude,
                                              zoom: zoomLevel)
        let position2D = CLLocationCoordinate2D(latitude: location.coordinate.latitude, longitude: location.coordinate.longitude)
        let marker = GMSMarker(position: position2D)
        marker.map = self.mapView
        
        if (mapView?.isHidden)! {
            mapView?.isHidden = false
            mapView?.camera = camera
        } else {
            mapView?.animate(to: camera)
        }
        
        listLikelyPlaces()
    }
    
    // Handle authorization for the location manager.
    func locationManager(_ manager: CLLocationManager, didChangeAuthorization status: CLAuthorizationStatus) {
        switch status {
        case .restricted:
            print("Location access was restricted.")
        case .denied:
            print("User denied access to location.")
            // Display the map using the default location.
            mapView?.isHidden = false
        case .notDetermined:
            print("Location status not determined.")
        case .authorizedAlways: fallthrough
        case .authorizedWhenInUse:
            print("Location status is OK.")
        }
    }
    
    // Handle location manager errors.
    func locationManager(_ manager: CLLocationManager, didFailWithError error: Error) {
        locationManager.stopUpdatingLocation()
        print("Error: \(error)")
    }
}