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我正在製作核心藍牙應用程序，使用我的iPhone作爲外設，並將我的Mac作爲中央處理器。我的iPhone已打開並進行廣告宣傳，但在藍牙瀏覽器中，其他iPhone和Mac無法發現它。不過，我的朋友的Android手機可以發現它。這是怎麼回事？ iOS的結束：爲什麼我的CBPeripheralManager廣告不可發現？
import UIKit
import CoreBluetooth
class ViewController: UIViewController, CBPeripheralManagerDelegate {
@IBOutlet weak var statusLabel: UILabel!
@IBOutlet weak var connectionInfoLabel: UILabel!
var peripheralManager: CBPeripheralManager!
var accelerometerXCharacteristic: CBMutableCharacteristic!
var phoneDataService: CBMutableService!
var accelerometerXData: Data!
override func viewDidLoad() {
super.viewDidLoad()
connectionInfoLabel.isHidden = true
//Ignore this I was testing the data encoding
let accelerometerVal = "45"
let someData = accelerometerVal.data(using: String.Encoding.utf8)
let revertedString = String(data: someData!, encoding: String.Encoding.utf8)! as String
let integer = Int(revertedString)!
print(integer)
setupBT(delegate: self, intialXData: someData!)
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func setupBT(delegate: CBPeripheralManagerDelegate, intialXData: Data) {
peripheralManager = CBPeripheralManager(delegate: delegate, queue: nil)
//print(peripheralManager.state)
let accelerometerXCharacteristicUUID = CBUUID(string: "07B24C73-C35B-45C7-A43D-58240E3DB4DF")
let phoneDataServiceUUID = CBUUID(string: "CAB1B028-2243-4F2C-A2F1-3BE5AD51AD61")
accelerometerXCharacteristic = CBMutableCharacteristic(type: accelerometerXCharacteristicUUID, properties: CBCharacteristicProperties.read, value: intialXData, permissions: CBAttributePermissions.readable)
phoneDataService = CBMutableService(type: phoneDataServiceUUID, primary: true)
phoneDataService.characteristics = [accelerometerXCharacteristic]
}
func peripheralManagerDidUpdateState(_ peripheral: CBPeripheralManager) {
var statusMessage = ""
switch peripheral.state {
case .poweredOn:
statusMessage = "Bluetooth Status: Turned On"
peripheralManager.add(phoneDataService)
peripheralManager.startAdvertising([CBAdvertisementDataServiceUUIDsKey : [phoneDataService.uuid], CBAdvertisementDataLocalNameKey: "DSiPhone"])
case .poweredOff:
statusMessage = "Bluetooth Status: Turned Off"
case .resetting:
statusMessage = "Bluetooth Status: Resetting"
case .unauthorized:
statusMessage = "Bluetooth Status: Not Authorized"
case .unsupported:
statusMessage = "Bluetooth Status: Not Supported"
default:
statusMessage = "Bluetooth Status: Unknown"
}
print(statusMessage)
}
func peripheralManager(_ peripheral: CBPeripheralManager, didAdd service: CBService, error: Error?) {
if ((error) != nil) {
print("Error \(error!.localizedDescription)")
}
}
func peripheralManagerDidStartAdvertising(_ peripheral: CBPeripheralManager, error: Error?) {
print("Advertising")
if ((error) != nil) {
print("Error advertising \(error!.localizedDescription)")
}
}
func peripheralManager(_ peripheral: CBPeripheralManager, didReceiveRead request: CBATTRequest) {
var requestedCharacteristic: CBMutableCharacteristic?
switch request.characteristic.uuid {
case accelerometerXCharacteristic.uuid:
requestedCharacteristic = accelerometerXCharacteristic
default:
requestedCharacteristic = nil
}
if let characteristic = requestedCharacteristic {
if request.offset > characteristic.value!.count {
request.value = characteristic.value?.subdata(in: request.offset..<(characteristic.value!.count - request.offset))
peripheralManager.respond(to: request, withResult: CBATTError.success)
} else {
peripheralManager.respond(to: request, withResult: CBATTError.invalidAttributeValueLength)
}
} else {
peripheralManager.respond(to: request, withResult: CBATTError.attributeNotFound)
}
}
func peripheralManager(_ peripheral: CBPeripheralManager, central: CBCentral, didSubscribeTo characteristic: CBCharacteristic) {
print("Connection Successful")
statusLabel.text = "Successful!"
let didSendValue = peripheralManager.updateValue(accelerometerXData, for: characteristic as! CBMutableCharacteristic, onSubscribedCentrals: nil)
if !didSendValue {
print("Send failed")
}
}
}
它打印出藍牙狀態打開和廣告。在Mac端：
import Cocoa
import CoreBluetooth
class ViewController: NSViewController, CBCentralManagerDelegate {
var centralManager: CBCentralManager!
override func viewDidLoad() {
super.viewDidLoad()
centralManager = CBCentralManager(delegate: self, queue: nil)
// Do any additional setup after loading the view.
}
override var representedObject: Any? {
didSet {
// Update the view, if already loaded.
}
}
func setupBT() {
}
func centralManagerDidUpdateState(_ central: CBCentralManager) {
var statusMessage = ""
switch central.state {
case .poweredOn:
centralManager.scanForPeripherals(withServices: [CBUUID(string: "CAB1B028-2243-4F2C-A2F1-3BE5AD51AD61")], options: nil)
statusMessage = "Bluetooth Status: Turned On"
case .poweredOff:
statusMessage = "Bluetooth Status: Turned Off"
case .resetting:
statusMessage = "Bluetooth Status: Resetting"
case .unauthorized:
statusMessage = "Bluetooth Status: Not Authorized"
case .unsupported:
statusMessage = "Bluetooth Status: Not Supported"
default:
statusMessage = "Bluetooth Status: Unknown"
}
print(statusMessage)
}
func centralManager(_ central: CBCentralManager, didDiscover peripheral: CBPeripheral, advertisementData: [String : Any], rssi RSSI: NSNumber) {
print("Discovered")
}
}
它打印出藍牙已啓動，但它沒有發現任何東西。
你如何試圖發現你的外設？ –
在設置中使用藍牙設備瀏覽器沒有發現它，我的Mac核心藍牙應用程序也沒有發現它。可以在必要時提供mac代碼 –
@BrandonA我添加了Mac代碼 –