another iOS fix attempt

ios/Runner/AppDelegate.swift

@@ -5,7 +5,7 @@ import Foundation
 import ContactsUI
 import GoogleMaps
 
-public class NativeContact: NSObject, CNContactViewControllerDelegate, UIViewController {
+public class NativeContact: NSObject, CNContactViewControllerDelegate{
 
  private(set) var displayName: String
  private(set) var note: String
@@ -16,13 +16,15 @@ public class NativeContact: NSObject, CNContactViewControllerDelegate, UIViewCon
  init( map:
  [String : Any]
  ) {
- self.displayName = map["displayName"] as! String
- self.note = map["note"] as! String
- self.email = map["email"] as! String
- self.website = map["website"] as! String
+ self.displayName = map["displayName"] as? String ?? ""
+ self.note = map["note"] as? String ?? ""
+ self.email = map["email"] as? String ?? ""
+ self.website = map["website"] as? String ?? ""
  self.phones = [NativeContactPhone]()
- for phone in map["phones"] as! [[String:String]]{
- self.phones.append(NativeContactPhone(map:phone))
+ if let phones = map["phones"] as? [[String:String]]{
+ for phone in phones{
+ self.phones.append(NativeContactPhone(map:phone))
+ }
  }
  }
 
@@ -88,7 +90,7 @@ public class NativeContact: NSObject, CNContactViewControllerDelegate, UIViewCon
  while let nextView = rvc?.presentedViewController {
  rvc = nextView
  } */
- self.present(navigation, animated:true, completion: nil)
+ vc.present(navigation, animated:true, completion: nil)
 
 
  }
@@ -135,8 +137,10 @@ public class NativeContact: NSObject, CNContactViewControllerDelegate, UIViewCon
  result(FlutterMethodNotImplemented)
  return
  }
- var contact = NativeContact(map:call.arguments)
- contact.saveNatively()
+ if let args = call.arguments as? [String:Any] {
+ var contact = NativeContact(map:args)
+ contact.saveNatively()
+ }
  })
  GMSServices.provideAPIKey("AIzaSyC8crEFAO6MSNJMRK1lmo-WnSL7RLFu87w")
  GeneratedPluginRegistrant.register(with: self)