无法通过 Multipeer Connectivity 连接蓝牙
Cannot connect Bluetooth via Multipeer Connectivity
Swift 3.0
我可以使用多人连接通过 Wifi 共享从 iPhone 到 iPhone 的数据，但不能通过蓝牙共享数据，在我看来 Wifi 不稳定。
Wifi会连接一半时间，蓝牙会看到对端但连接不上。
在本地将 IPhone 连接到 iPhone 以及将 IPhone 连接到任何其他类型的 Phone 的最佳方法是什么。一个例子是没有互联网或没有 Wifi。
我最终也会向服务器发送数据，并从该服务器接收数据。
这会给我 3 个连接选择：
1.Private 使用（蓝牙）？并肩而立
2.Semi 私人使用 (Wifi) 办公室到办公室
3.Public 在全球范围内使用（互联网）
蓝牙连接代码有误吗？
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!
}
}
蓝牙问题出在蓝牙连接测试中，而不是代码中。
我发现在 Swift 3.0（我是 运行）中，您无法关闭 Wifi 并进行测试，您必须进入设置 > Wi-Fi，然后选择 Wi-Fi/Network 您的连接到。然后select忘记这个网络。
即使您没有Wi-Fi/Network，现在也必须打开 WiFi 本身和蓝牙。
我找到这个是为了获取 wi-fi ID。
这可能对你有用。如果有 ID，则执行其他操作，如果没有，则执行其他操作。
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
}
Swift 3.0
我可以使用多人连接通过 Wifi 共享从 iPhone 到 iPhone 的数据，但不能通过蓝牙共享数据，在我看来 Wifi 不稳定。
Wifi会连接一半时间，蓝牙会看到对端但连接不上。
在本地将 IPhone 连接到 iPhone 以及将 IPhone 连接到任何其他类型的 Phone 的最佳方法是什么。一个例子是没有互联网或没有 Wifi。
我最终也会向服务器发送数据，并从该服务器接收数据。
这会给我 3 个连接选择：
1.Private 使用（蓝牙）？并肩而立
2.Semi 私人使用 (Wifi) 办公室到办公室
3.Public 在全球范围内使用（互联网）
蓝牙连接代码有误吗？
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!
}
}
蓝牙问题出在蓝牙连接测试中，而不是代码中。 我发现在 Swift 3.0（我是 运行）中，您无法关闭 Wifi 并进行测试，您必须进入设置 > Wi-Fi，然后选择 Wi-Fi/Network 您的连接到。然后select忘记这个网络。
即使您没有Wi-Fi/Network，现在也必须打开 WiFi 本身和蓝牙。
我找到这个是为了获取 wi-fi ID。 这可能对你有用。如果有 ID，则执行其他操作，如果没有，则执行其他操作。
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
}