我是swift的新手，但是我尝试通过单击子视图控制器中的元素然后导航到相应的GMSCameraPosition来实现从一个视图控制器到另一个视图控制器的表视图。功能调用有效，但相机由于某种原因不会更新。
以下是代码：
import UIKit
import GoogleMaps
class PopUpViewController: UIViewController, UITableViewDataSource, UITableViewDelegate {
@IBOutlet weak var buildingsList: UITableView!
let buildings = ["MESA Building",
"Science and Technology Building",
"Library Building",
"Student Activity Center Building (SAC)",
"Founders Building",
"Gym Complex",
"CEED Building",
"Arts Building"]
//var camera = GMSCameraPosition()
override func viewDidLoad() {
super.viewDidLoad()
self.showAnimate()
// Do any additional setup after loading the view.
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
override func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent?) {
self.removeAnimate()
//self.view.removeFromSuperview()
//Do thing here
}
//
//TableView Functions
//
//Manages the sections of TabelView
func numberOfSections(in tableView: UITableView) -> Int {
return 1
}
//Adds rows to tableView
public func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return(buildings.count)
}
//Adds text to each cell/row
public func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell{
let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath)
cell.textLabel!.text = buildings[indexPath.row]
return(cell)
}
//Action performed when cell is clicked
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
let row = buildings[indexPath.row]
print(row)
if (row == "MESA Building")
{
MapViewController().setLocation()
self.removeAnimate()
}
}
//
//Popup Functions
//
func showAnimate()
{
self.view.transform = CGAffineTransform(scaleX: 0.25, y: 0.25)
self.view.alpha = 0.0;
UIView.animate(withDuration: 0.25, animations: {
self.view.alpha = 1.0
self.view.transform = CGAffineTransform(scaleX: 1, y: 1)
});
}
func removeAnimate()
{
UIView.animate(withDuration: 0.25, animations: {
self.view.transform = CGAffineTransform(scaleX: 0.25, y: 0.25)
self.view.alpha = 0.0;
}, completion:{(finished : Bool) in
if (finished)
{
self.view.removeFromSuperview()
}
});
}
}
的MapViewController
import UIKit
import MapKit
import GoogleMaps
class MapViewController: UIViewController, CLLocationManagerDelegate {
@IBOutlet weak var googleMaps: GMSMapView!
@IBOutlet weak var buildingsTable: UITableView!
var locManager: CLLocationManager!
static var camera = GMSCameraPosition()
static var mapView = GMSMapView()
override func viewDidLoad() {
super.viewDidLoad()
locManager = CLLocationManager()
locManager.delegate = self
//default location for google maps
MapViewController.camera = GMSCameraPosition.camera(withLatitude: 31.888401, longitude: -102.323992, zoom: 15.5)
//mapView allows user to interact with the UI
MapViewController.mapView = GMSMapView.map(withFrame: self.view.bounds, camera: MapViewController.camera)
self.view.addSubview(MapViewController.mapView)
//self.view = mapView
//Creates the nav button on the UI to show the buildings
let buildingsButton = UIButton()
let image = UIImage(named: "nav")
buildingsButton.frame = CGRect(x: self.view.frame.size.width - 65, y: 70, width: 57, height: 57)
//button.setTitle("Name your Button ", for: .normal)
buildingsButton.layer.shadowOpacity = 0.8
buildingsButton.layer.shadowOffset = CGSize(width: 0, height: 2)
buildingsButton.layer.shadowColor = UIColor.black.cgColor
buildingsButton.setBackgroundImage(image, for: .normal)
buildingsButton.addTarget(self, action: #selector(buildingsButtonTapped), for: .touchUpInside)
self.view.addSubview(buildingsButton)
//adds the compass button at the top of the UI
MapViewController.mapView.settings.compassButton = true
//shows visibility to the elements in the Google Maps UI
MapViewController.mapView.accessibilityElementsHidden = false
//checks if user allows their location to be used, then will find location on the map
if CLLocationManager.authorizationStatus() == .authorizedWhenInUse {
print("All set!")
//finds the location of the user
MapViewController.mapView.isMyLocationEnabled = true
//allows the user to click on a button to recented their current location
MapViewController.mapView.settings.myLocationButton = true
//constantly updates the users location in the UI
locManager.startUpdatingLocation()
}
else{
print("Asking user for their location!")
//Asks the user if they would like to share their location
locManager.requestWhenInUseAuthorization()
//finds the location of the user
MapViewController.mapView.isMyLocationEnabled = true
//allows the user to click on a button to recented their current location
MapViewController.mapView.settings.myLocationButton = true
//constantly updates the users location in the UI
locManager.startUpdatingLocation()
}
//Array of buildings to be user as markers
let buildings = [
Building(name: "Library", lat: 31.888199, long: -102.328775),
Building(name: "MESA Building", lat: 31.889575, long:-102.329833),
Building(name: "Science and Technology (ST) Building", lat: 31.888787, long:-102.327587),
Building(name: "Student Activity Canter (SAC) Building", lat: 31.889445, long:-102.328128),
Building(name: "Founders Building", lat: 31.885989, long:-102.3222291),
Building(name: "Gym Complex", lat: 31.890361, long:-102.328636),
Building(name: "CEED Building", lat: 31.970513, long:-102.249466),
Building(name: "Arts Building", lat: 31.891409, long:-102.327194),
Building(name: "(New)Residence and Dining Hall", lat: 31.888886, long:-102.325978),
]
//for loop using the array and structure to place the markers accordingly
for building in buildings {
let building_marker = GMSMarker()
building_marker.position = CLLocationCoordinate2D(latitude: building.lat, longitude: building.long)
building_marker.title = building.name
// building_marker.snippet = "Hey, this is \(building.name)"
building_marker.map = MapViewController.mapView
building_marker.appearAnimation = kGMSMarkerAnimationPop
}
}
//structure that initializes the variables for the markers
struct Building {
let name: String
let lat: CLLocationDegrees
let long: CLLocationDegrees
}
func buildingsButtonTapped(sender: UIButton!) {
print("Button tapped")
let popOverVC = UIStoryboard(name: "Main", bundle: nil).instantiateViewController(withIdentifier: "sbPopUpID") as! PopUpViewController
self.addChildViewController(popOverVC)
popOverVC.view.frame = self.view.frame
self.view.addSubview(popOverVC.view)
popOverVC.didMove(toParentViewController: self)
}
func setLocation(){
MapViewController.camera = GMSCameraPosition.camera(withLatitude: 31.888199, longitude: -102.328775, zoom: 15.5)
MapViewController.mapView = GMSMapView.map(withFrame: self.view.bounds, camera: MapViewController.camera)
self.view.addSubview(MapViewController.mapView)
}
}