ViewController 不符合协议 GMSAutoCompleteViewControllerDelegate in Swift

Question

我收到错误：'ViewController' 不符合以下代码中的协议 'GMSAutoCompleteViewControllerDelegate'。

class MapViewController: UIViewController, CLLocationManagerDelegate, GMSMapViewDelegate, GMSAutocompleteViewControllerDelegate {

...

@IBAction func autocompleteClicked(sender: AnyObject) {
        let autoCompletController = GMSAutocompleteViewController()
        autoCompletController.delegate = self
        self.presentViewController(autoCompletController, animated: true, completion: nil)
    }

    //Handle user's selection
    func viewController(viewController: GMSAutocompleteViewController!, didAutocompleteWithPlace place: GMSPlace!) {
        //let placeName = place.name
        //let placeAddress = place.formattedAddress
        //let placeAttributions = place.attributions
        let placeCoordinate = place.coordinate
        mapView.camera = GMSCameraPosition(target: placeCoordinate, zoom: 15, bearing: 0, viewingAngle: 0)
    }

    func viewController(viewController: GMSAutocompleteViewController!, didAutocompleteWithError error: NSError!) {
        // TODO: handle the error.
        print("Error: ", error.description)
    }

    func wasCancelled(viewController: GMSAutocompleteViewController!) {
        self.dismissViewControllerAnimated(true, completion: nil)
    }
}

解决办法是什么？谢谢

Answer 1

您可能缺少 GMSMapViewDelegate 协议中的必需功能。 Ctrl+点击进入GMSMapViewDelegate，查看列出的功能：没有列为@optional的功能你都实现了吗？如果没有，swift 将无法编译。

Answer 2

您似乎输错了其中一项必需的功能。 didAutoCompleteWithError

func viewController(viewController: GMSAutocompleteViewController!, didFailAutocompleteWithError error: NSError!) {
    // TODO: handle the error.
    print("Error: ", error.description)
}

编辑： GoogleDevelopers 文档中提供的有关 GMSAutocompleteViewControllerDelegate 协议参考的信息。

他们的文档中 google 提供的示例之一是 GMSAutocompleteViewControllerDelegate 的错误表示。该示例似乎是 Objective-C 等效项的纯翻译，因此对所需委托函数的描述有误。

比较example, with the actual docs here。记笔记示例中的 didAutocompleteWithError 和 didFailAutocompleteWithError 在协议参考中。

如有错误请指正

Answer 3

我刚刚在 Swift 3 中收到此错误并将其更改为以下对我有用：

func viewController(_ viewController: GMSAutocompleteViewController, didFailAutocompleteWithError error: Swift.Error) {
    // TODO: handle the error.
    print("Error: \(error.localizedDescription)")
}

ViewController 不符合协议 GMSAutoCompleteViewControllerDelegate in Swift

ViewController does not conform to protocol GMSAutoCompleteViewControllerDelegate in Swift

ios

swift

google-maps

autocomplete

google-places-api