我正在尝试在谷歌地图上显示用户的当前位置，但在下面的情况下，地图甚至不会显示。我该怎么改变来解决这个问题？
var locationManager = CLLocationManager()
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
//user location stuff
locationManager.delegate = self
locationManager.requestWhenInUseAuthorization()
locationManager.desiredAccuracy = kCLLocationAccuracyBest
locationManager.startUpdatingLocation()
}
func locationManager(manager: CLLocationManager, didFailWithError error: NSError) {
print("Error" + error.description)
}
func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
let userLocation = locations.last
let center = CLLocationCoordinate2D(latitude: userLocation!.coordinate.latitude, longitude: userLocation!.coordinate.longitude)
let camera = GMSCameraPosition.cameraWithLatitude(userLocation!.coordinate.latitude,
longitude: userLocation!.coordinate.longitude, zoom: 8)
let mapView = GMSMapView.mapWithFrame(CGRectZero, camera: camera)
mapView.myLocationEnabled = true
self.view = mapView
let marker = GMSMarker()
marker.position = center
marker.title = "Current Location"
marker.snippet = "XXX"
marker.map = mapView
locationManager.stopUpdatingLocation()
}
答案 0 :(得分：3)
你可以试试这个波纹管代码工作正常
import UIKit
import GoogleMaps
import GooglePlaces
class SearchMapsViewController: UIViewController,
UINavigationBarDelegate, GMSAutocompleteFetcherDelegate,
LocateOnTheMap, UISearchBarDelegate, CLLocationManagerDelegate
{
@IBOutlet var googleMapsContainerView: UIView!
var searchResultController: SearchResultsController!
var resultsArray = [String]()
var googleMapsView:GMSMapView!
var gmsFetcher: GMSAutocompleteFetcher!
var locationManager = CLLocationManager()
override func viewDidAppear(animated: Bool) {
locationManager.delegate = self
locationManager.requestWhenInUseAuthorization()
locationManager.desiredAccuracy = kCLLocationAccuracyBest
locationManager.startUpdatingLocation()
self.googleMapsView = GMSMapView (frame: self.googleMapsContainerView.frame)
self.googleMapsView.settings.compassButton = true
self.googleMapsView.myLocationEnabled = true
self.googleMapsView.settings.myLocationButton = true
self.view.addSubview(self.googleMapsView)
searchResultController = SearchResultsController()
searchResultController.delegate = self
gmsFetcher = GMSAutocompleteFetcher()
gmsFetcher.delegate = self
}
func locationManager(manager: CLLocationManager, didFailWithError error: NSError)
{
print("Error" + error.description)
}
func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation])
{
let userLocation = locations.last
let center = CLLocationCoordinate2D(latitude: userLocation!.coordinate.latitude, longitude: userLocation!.coordinate.longitude)
let camera = GMSCameraPosition.cameraWithLatitude(userLocation!.coordinate.latitude, longitude: userLocation!.coordinate.longitude, zoom: 15);
self.googleMapsView.camera = camera
self.googleMapsView.myLocationEnabled = true
let marker = GMSMarker(position: center)
print("Latitude :- \(userLocation!.coordinate.latitude)")
print("Longitude :-\(userLocation!.coordinate.longitude)")
marker.map = self.googleMapsView
marker.title = "Current Location"
locationManager.stopUpdatingLocation()
}
答案 1 :(得分：1)
在infoPlist上进行requier设置，然后尝试这个
@IBOutlet weak var your "name of view which show map": GMSMapView!
override func viewDidLoad(){
super.viewDidLoad()
placesClient = GMSPlacesClient.shared()
locationManager.requestAlwaysAuthorization()
if CLLocationManager.locationServicesEnabled(){
locationManager.delegate = self
locationManager.desiredAccuracy = kCLLocationAccuracyKilometer
locationManager.distanceFilter = 500
locationManager.requestWhenInUseAuthorization()
locationManager.requestAlwaysAuthorization()
locationManager.startUpdatingLocation()
}
mapView.settings.myLocationButton = true
mapView.settings.zoomGestures = true
mapView.animate(toViewingAngle: 45)
mapView.delegate = self }
func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
let newLocation = locations.last // find your device location
mapView.camera = GMSCameraPosition.camera(withTarget: newLocation!.coordinate, zoom: 14.0) // show your device location on map
mapView.settings.myLocationButton = true // show current location button
var lat = (newLocation?.coordinate.latitude)! // get current location latitude
var long = (newLocation?.coordinate.longitude)! //get current location longitude
}
答案 2 :(得分：0)
问题是您将mapView的框架设置为 CGRectZero 。这会导致地图的高度为零，零宽度，难怪它不显示！
尝试将其设置为 CGRectMake（0,0,200,200），例如，这将为您提供屏幕左上角的地图，大小为200 x 200。
之前我从未使用过Swift，因此CGRectMake()的语法可能略有不同
答案 3 :(得分：0)
您的viewDidLoad函数似乎没有创建地图。您可能想尝试移动它，看看会发生什么。
答案 4 :(得分：0)
将适当的属性添加到List<jd_records> result = jddt.Rows
.GroupBy(jd => jd.invoiceNo)
.Select(jd => new jd_records
{
invoiceNo = jd.invoiceNo,
totalTax = jd.Sum(d => d.tax)
}).ToList();
中。
您应该确保信息属性列表中包含info.plist和locationalwaysusagedescription的NS属性。这允许询问当前位置的权限。
答案 5 :(得分：0)
$(document).ready(function () {
var rowcount, addBtn, tableBody;
addBtn = $('#addNew');
rowcount = $('#autocomplete_table tbody tr').length + 1;
tableBody = $('#autocomplete_table');
addBtn.click(function () {
$.ajax({
method: "get",
url: "book/getDepartment/" ,
success: function (data) {
console.log(data)
//rowcount=rowcount+1;
console.log(rowcount);
html = '<tr id="row_' + rowcount + '">';
html += '<td><button type="button" id="delete_' + rowcount + '" class=" btn btn-danger btn-sm remove delete_row"><i class="glyphicon glyphicon-remove-sign"></i></button></td>';
html += '<td><input type="text" data-field-name="book_name" name="book_name[]" id="book_name_' + rowcount + '" class=" form-control input-sm "></td>';
html += '<td><input type="text" data-field-name="edition" name="edition[]" id="edition_' + rowcount + '" class="form-control input-sm "></td>';
html += '<td><input type="text" required data-field-name="number" name="number[]" id="number_' + rowcount + '" class="form-control input-sm number"></td>';
html += '<td><input type="text" data-field-name="by_price" name="by_price[]" id="by_price_' + rowcount + '" class="form-control input-sm by_price"></td>';
html += '<td><input type="text" data-field-name="sell_price" name="sell_price[]" id="sell_price_' + rowcount + '" class="form-control input-sm sell_price"></td>';
html += '<td><input type="text" data-field-name="total_payment" name="total_payment[]" id="total_payment_' + rowcount + '" class="form-control input-sm total_payment"></td>';
html += '<td><select data-field-name="department" name="department[]" id="department_' + rowcount + '" class=" form-control input-sm department">';
html += '<option> انتخاب کنید...</option>';
$.each(data, function (i, item) {
html += '<option value="' + item.department_id + '">' + item.department_name + '</option>';
});
html += '</select></td>';
html += '</tr>';
rowcount++;
tableBody.append(html);
},
error: function () {
}
})
})
function delete_Row() {
var rowNo;
id = $(this).attr('id');
//console.log(id);
id_arr = id.split("_");
// console.log(id_arr);
rowNo = id_arr[id_arr.length - 1];
if (rowNo > 1) {
$('#row_' + rowNo).remove();
} else {
alert("شما نمی توانداین سطر را جذف کندید");
}
//console.log($(this).parent());
// $(this).parent().parent().remove();
}
function registerEvent() {
$(document).on('click', '.delete_row', delete_Row);
}
registerEvent();
});
导入谷歌地图 导入 GooglePlaces 导入核心位置
类 MapsViewController：UIViewController、CLLocationManagerDelegate、GMSMapViewDelegate {
import UIKit
}