ios - CoreBluetooth 广告但无法从其他设备看到

Question

我试图将 iOS iPhone 设置为蓝牙外围设备，这样我就可以从另一个 iDevice 蓝牙设备看到它并发送信息。

我认为我在为自己做广告，但我无法从其他 iPhone、iPad 或 Mac 的任何地方看到它。控制台输出表明它是广告？我是否错过了一些明显的东西，(我环顾四周，谷歌搜索和这里)但没有运气。

控制台:

self.peripheralManager powered on.
Service Added
peripheralManagerDidStartAdvertising(_:error:)
Advertising

代码:

import UIKit
import CoreBluetooth
class ViewController: UIViewController,CBPeripheralManagerDelegate {
    var peripheralManager:CBPeripheralManager!
    var transferCharacteristic: CBMutableCharacteristic?
    let MyP_Service_UUID = CBUUID(string: "1B981746-2064-4F68-BBB8-69A185314FC6")
    let MyP_Characteristics_UUID = CBUUID(string: "4271CEC1-652D-489B-8484-7C3550C6075E")
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
        self.peripheralManager = CBPeripheralManager(delegate: self, queue: nil)
    }
    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }
    override func viewDidDisappear(_ animated: Bool) {
        super.viewDidDisappear(animated)
        // Don't keep it going while we're not showing.
        peripheralManager.stopAdvertising()
    }
    func peripheralManagerDidUpdateState(_ peripheral: CBPeripheralManager) {
        if (peripheral.state != .poweredOn) {
            return
        }
        print("self.peripheralManager powered on.")
        // ... so build our service.
        let myCharacteristic = CBMutableCharacteristic(type: MyP_Characteristics_UUID, properties: [.notify], value: nil, permissions: .readable)
        let myService = CBMutableService(type: MyP_Service_UUID, primary: true)
        myService.characteristics?.append(myCharacteristic)
        peripheralManager.add(myService)
        peripheralManager.startAdvertising([ CBAdvertisementDataServiceUUIDsKey: [MyP_Service_UUID], CBAdvertisementDataLocalNameKey : "MyP"])
    }

    func peripheralManager(_ peripheral: CBPeripheralManager, didAdd service: CBService, error: Error?) {
        print(error ?? "Service Added")
    }
    func peripheralManagerDidStartAdvertising(_ peripheral: CBPeripheralManager, error: Error?) {
        print(#function)
        print(error ?? "Advertising")
    }
    func peripheralManager(_ peripheral: CBPeripheralManager, central: CBCentral, didSubscribeTo characteristic: CBCharacteristic) {
        print(#function)
    }
    func peripheralManager(_ peripheral: CBPeripheralManager, central: CBCentral, didUnsubscribeFrom characteristic: CBCharacteristic) {
        print(#function)
    }
    func peripheralManagerIsReady(toUpdateSubscribers peripheral: CBPeripheralManager) {
        print(#function)
    }

}

Answer 1

为了获得更好的支持，我们需要在 BLE Central 端查看您的代码。您是否在扫描设备上扫描相同的服务 UUID？

顺便说一句，根据您的用例，您可能想要检查可以为您处理所有蓝牙交互的其他 SDK。例如:MultipeerConnectivity、p2pkit、附近的谷歌。

免责声明:我在开发 p2pkit 的团队工作