ios - 我需要知道蓝牙是否打开/关闭，无论设备如何

Question

因此，当此段在我的 iPad Air 上运行时，我尝试检查 iOS 设备上的蓝牙是否打开或关闭，它打印 Bluetooth Status: Turned On 或 Bluetooth Status:当我打开/关闭蓝牙时关闭。但是当我在 iPad 2 上运行它时，它会打印 Bluetooth Status: Not Supported。

fileprivate var bluetoothPeripheralManager: CBPeripheralManager?

override init() {
    super.init()
    let options = [CBCentralManagerOptionShowPowerAlertKey:0]
    bluetoothPeripheralManager = CBPeripheralManager(delegate: self, queue: nil, options: options)
}

extension PrintersMonitor: CBPeripheralManagerDelegate{
func peripheralManagerDidUpdateState(_ peripheral: CBPeripheralManager){
    var statusMessage = ""

    switch peripheral.state {
    case .poweredOn:
        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"
        bluetoothPeripheralManager = nil
    default:
        statusMessage = "Bluetooth Status: Unknown"
    }

    log(statusMessage)

    if peripheral.state == .poweredOn{
        if state != .searching{
            resume()
        }
    }else if peripheral.state == .poweredOff{
        pause(isPrinting: false)
    }
}

}

我这边是不是少了点什么!我需要知道蓝牙是否打开/关闭，无论设备如何!

Answer 1

iPad 2 不支持 BLE，这是 Core Bluetooth 公开的蓝牙。这就是为什么您的状态为“不支持”。

没有 API 可以提供传统蓝牙的电源状态。