如何在谷歌地方自动填充iOS显示距离

Question

我正在尝试实现一个自动完成框。在该应用程序中，我想在tableview中显示左侧标签的距离。我认为他们正在使用Places Autocomplete API，但我不知道它在tableview的左侧显示距离。

extension ViewController: GMSAutocompleteResultsViewControllerDelegate {
    func resultsController(_ resultsController: GMSAutocompleteResultsViewController,
                       didAutocompleteWith place: GMSPlace) {
        searchController?.isActive = false
        // Do something with the selected place.
        print("Place name: \(place.name)")
        print("Place address: \(place.formattedAddress)")
        print("Place attributions: \(place.attributions)")

        self.googleMapsView.clear()

        let position: CLLocationCoordinate2D = CLLocationCoordinate2D(latitude: place.coordinate.latitude, longitude: place.coordinate.longitude)
        let marker:GMSMarker = GMSMarker(position: position)

        markerPosition = CLLocation(latitude: marker.position.latitude, longitude: marker.position.longitude)

        marker.title = place.name
        marker.appearAnimation = kGMSMarkerAnimationPop
        marker.icon = GMSMarker.markerImage(with: .red)
        marker.map = self.googleMapsView

        self.googleMapsView.camera = GMSCameraPosition.camera(withLatitude: (place.coordinate.latitude), longitude: (place.coordinate.longitude), zoom: 17.0, bearing: 0, viewingAngle: 0)

        searchController?.searchBar.text = place.name

        self.dismiss(animated: true, completion: nil) // dismiss after select place
    }

    func resultsController(_ resultsController: GMSAutocompleteResultsViewController,
                       didFailAutocompleteWithError error: Error){
        // TODO: handle the error.
        print("Error: ", error.localizedDescription)
    }
}

Answer 1

您可以使用 cout << new char << endl; 对象上的函数计算给定GMSPlace与当前设备位置之间的距离：

CLLocation

在你的具体例子中：

func distance(from location: CLLocation) -> CLLocationDistance

现在，您可以将if let currentPosition = self.googleMapsView.myLocation { //returns the distance between two CLLocation objects in meters let distance = markerPosition.distance(from: currentPosition) } 转换并格式化为您想要的内容。

或者您可以使用CLLocationManager获取当前设备位置。

Answer 2

谢谢你的回答。现在，我可以计算距离，但我无法在Tableview单元格中显示左侧距离。