一旦用户的位置已经被迅速发现，使当前位置显示在地图上3

Question

您好我正在尝试修复这个功能，直到swift 3完全正常，有人知道这个改变是什么吗？

override func observeValue(forKeyPath keyPath: String?, of object: Any?, change: [NSKeyValueChangeKey : Any]?, context: UnsafeMutableRawPointer?) { 
    if !didFindMyLocation { 
     let myLocation: CLLocation = change?[NSKeyValueChangeKey] as! CLLocation //Getting an error here Cannot convert value of type '(NSKeyValueChangeKey).Type' (aka 'NSKeyValueChangeKey.Type') to expected argument type 'DictionaryIndex<_, _>' 
     viewMap.camera = GMSCameraPosition.camera(withTarget: myLocation.coordinate, zoom: 10.0) 
     viewMap.settings.myLocationButton = true 

     didFindMyLocation = false 
    } 

} 

Answer 1

你应该提供适当的键象下面这样：

let myLocation: CLLocation = change?[NSKeyValueChangeKey.newKey] as! CLLocation