konnte keine Verbindung Bluetooth über Multipeer Connectivity

Question

Swift 3.0

Ich kann Daten von iPhone zu iPhone über WiFi teilen Multipeer Konnektivität verwenden, aber nicht über Bluetooth, und es scheint mir, dass der Wireless-LAN instabil ist.
Das WLAN wird die Hälfte der Zeit verbinden und das Bluetooth wird die Peers sehen, aber keine Verbindung herstellen.
Was wäre der beste Weg, ein IPhone mit einem iPhone und ein IPhone lokal mit einem anderen Telefon zu verbinden. Ein Beispiel ist wie kein Internet oder kein Wifi.
Ich werde auch Daten an einen Server senden und Daten von diesem Server empfangen.

gib mir Dies würde 3-Verbindung zur Auswahl:

1.Private mit (Bluetooth)? Standing Side-by-Side-
2.Semi Privat mit (Wifi) Büro zu Büro
3.Public mit (Internet) weltweit

Ist dieser Code falsch für Bluetooth-Verbindung?

import UIKit 
import MultipeerConnectivity 



class ViewController: UIViewController, MCSessionDelegate, MCBrowserViewControllerDelegate, UINavigationControllerDelegate , UIImagePickerControllerDelegate{ 



//MARK: - Variables 
var myDictionary:NSDictionary = [:] 

//Variables for Peer to Peer. 
var browser : MCBrowserViewController! 
var assistant : MCAdvertiserAssistant! 
var session : MCSession! 
var peerID : MCPeerID! 

//Variables for Peer to Peer. 
let imagePicker = UIImagePickerController() 
var imageDataVar: NSData! 



//MARK: - Labels 
@IBOutlet weak var firstNameLabel: UILabel! 
@IBOutlet weak var lastNameLabel: UILabel! 

//MARK: - TextFields 
@IBOutlet weak var fistNameTextField: UITextField! 
@IBOutlet weak var lastNameTextField: UITextField! 

//MARK: - Outlets 

@IBOutlet weak var contactImageView: UIImageView! 

//MARK: - Buttons 
@IBAction func openPortButton(_ sender: AnyObject) { 
    self.present(self.browser, animated: true, completion: nil) 
} 

@IBAction func sendButton(_ sender: AnyObject) { 
    sendInfo() 
} 

@IBAction func getImage(_ sender: AnyObject) { 
    chooseImageContact() 
} 



//MARK: - ViewDidLoad 
override func viewDidLoad() { 
    super.viewDidLoad() 
    loadPeerToPeer() 
} 


//MARK: - Functions 
func sendInfo() { 
    if self.session.connectedPeers.count > 0 { 
     let firstNameVar = fistNameTextField.text! 
     let lastNameVar = lastNameTextField.text! 
      myDictionary = ["itemA" : "\(firstNameVar)", "itemB" : "\(lastNameVar)", "itemC" : imageDataVar] 
     do { 
      let data = NSKeyedArchiver.archivedData(withRootObject: myDictionary) 
      try self.session.send(data, toPeers: self.session.connectedPeers, with: MCSessionSendDataMode.unreliable) 
     } catch let error as NSError { 
      let ac = UIAlertController(title: "Send error", message: error.localizedDescription, preferredStyle: .alert) 
      ac.addAction(UIAlertAction(title: "OK", style: .default, handler: nil)) 
      present(ac, animated: true, completion: nil) 
     } 
    } 
} 


// Called when a peer sends an NSData to us 
func session(_ session: MCSession, didReceive data: Data, fromPeer peerID: MCPeerID) { 

    // This needs to run on the main queue 
    DispatchQueue.main.async { 
     self.myDictionary = NSKeyedUnarchiver.unarchiveObject(with: data) as! NSDictionary 

     self.firstNameLabel.text = self.myDictionary.value(forKey: "itemA") as? String 
     self.lastNameLabel.text  = self.myDictionary.value(forKey: "itemB") as? String 
     let image     = self.myDictionary.value(forKey: "itemC") as? NSData 
     let newContactImage:UIImage = UIImage(data: image! as Data)! 
     let smallPicture   = self.scaleContactImageWith(newContactImage, newSize: CGSize(width: 100, height: 100)) 
     var sizeOfImage:CGRect  = self.contactImageView.frame 
      sizeOfImage.size  = smallPicture.size 
     self.contactImageView.frame = sizeOfImage 
     self.contactImageView.image = smallPicture 
    } 
} 


func browserViewControllerDidFinish(_ browserViewController: MCBrowserViewController) { 
    dismiss(animated: true, completion: nil) 
} 
func browserViewControllerWasCancelled(_ browserViewController: MCBrowserViewController) { 
    dismiss(animated: true, completion: nil) 
} 
func browserViewController(_ browserViewController: MCBrowserViewController, shouldPresentNearbyPeer peerID: MCPeerID, withDiscoveryInfo info: [String : String]?) -> Bool { 
    return true 
} 

func session(_ session: MCSession, peer peerID: MCPeerID, didChange state: MCSessionState) { 
    switch state { 
    case MCSessionState.connected: 
     print("Connected: \(peerID.displayName)") 
    case MCSessionState.connecting: 
     print("Connecting: \(peerID.displayName)") 
    case MCSessionState.notConnected: 
     print("Not Connected: \(peerID.displayName)") 
    } 
} 

func session(_ session: MCSession, didStartReceivingResourceWithName resourceName: String, fromPeer peerID: MCPeerID, with progress: Progress) { 
} 
func session(_ session: MCSession, didFinishReceivingResourceWithName resourceName: String, fromPeer peerID: MCPeerID, at localURL: URL, withError error: Error?) { 
} 
func session(_ session: MCSession, didReceive stream: InputStream, withName streamName: String, fromPeer peerID: MCPeerID) { 
} 

func textFieldShouldReturn(_ textField: UITextField) -> Bool { 
    textField.resignFirstResponder() 
    return true 
} 



func loadPeerToPeer(){ 
    self.peerID = MCPeerID(displayName: UIDevice.current.name) 
    self.session = MCSession(peer: peerID, securityIdentity: nil, encryptionPreference: .required) 
    self.session = MCSession(peer: self.peerID) 
    self.session.delegate = self 
    self.assistant = MCAdvertiserAssistant(serviceType:"VBC-ShareCard", discoveryInfo:nil, session:self.session) 
    self.assistant.start() 
    self.browser = MCBrowserViewController(serviceType: "VBC-ShareCard", session: self.session) 
    self.browser.delegate = self 
} 

func imagePickerControllerDidCancel(_ picker: UIImagePickerController) { 
    picker.dismiss(animated: true, completion: nil) 
} 


// Picking the image 
func chooseImageContact(){ 
    let imagePicker   = UIImagePickerController() 
     imagePicker.delegate = self 
     imagePicker.sourceType = UIImagePickerControllerSourceType.photoLibrary 
    self.present(imagePicker, animated: true, completion: nil) 
} 


//Scalling the image 
func scaleContactImageWith(_ image:UIImage, newSize:CGSize)->UIImage{ 
     UIGraphicsBeginImageContextWithOptions(newSize, false, 0.0) 
     image.draw(in: CGRect(x: 0, y: 0, width: newSize.width, height: newSize.height)) 
    let newContactImage:UIImage = UIGraphicsGetImageFromCurrentImageContext()! 
     UIGraphicsEndImageContext() 
    return newContactImage 
} 

func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) { 

    //This gets the Contact image inside the imagePickerController 
    let pickedImage:UIImage  = info[UIImagePickerControllerOriginalImage] as! UIImage 
    let smallPicture   = scaleContactImageWith(pickedImage, newSize: CGSize(width: 100, height: 100)) 
    var sizeOfImage:CGRect  = contactImageView.frame 
     sizeOfImage.size  = smallPicture.size 
     contactImageView.frame = sizeOfImage 
     picker.dismiss(animated: true, completion: nil) 
     contactImageView.image = smallPicture as UIImage 
    let test : Data    = UIImagePNGRepresentation(smallPicture)! 
     imageDataVar   = test as NSData! 
} 

} 

Answer 1

Die Bluetooth-Ausgabe ist bei der Prüfung der Bluetooth-Verbindung nicht den Code. Ich habe festgestellt, dass Sie in Swift 3.0 (die ich ausgeführt habe) können Sie Wifi nicht ausschalten und den Test tun, müssen Sie in die Einstellung> Wi-Fi gehen und wählen Sie das Wi-Fi/Netzwerk, mit dem Sie verbunden sind. Wählen Sie dann "Dieses Netzwerk vergessen" aus.

Obwohl Sie kein Wi-Fi/Netzwerk haben, müssen das WLAN und Bluetooth aktiviert sein.

Answer 2

Ich fand dies die Wi-Fi-ID zu bekommen. Dies kann für Sie arbeiten. Wenn es eine ID gibt, dann tu etwas anderes, wenn nichts passiert.

func getWiFiSsid() -> String? { 
    var ssid: String? 
    if let interfaces = CNCopySupportedInterfaces() as NSArray? { 
     for interface in interfaces { 
      if let interfaceInfo = CNCopyCurrentNetworkInfo(interface as! CFString) as NSDictionary? { 
       ssid = interfaceInfo[kCNNetworkInfoKeySSID as String] as? String 
       break 
      } 
     } 
    } 
    print(ssid as Any, "This is/is not the ssid" as Any) 
    return ssid 
}