Swift 3：Bluetoothリストが空です

Question

if（central.state == .poweredOn）kontrolune girmiyor、bluetooth listesi gelmiyor ne yapabilirim？

輸入CoreBluetooth 輸入のUIKit

クラスのViewController：のUIViewController { するvar centralManager：CBCentralManager？ VAR周辺=配列（）

@IBOutlet weak var tableView: UITableView! 

override func viewDidLoad() { 
    super.viewDidLoad() 

    centralManager = CBCentralManager(delegate: self, queue: DispatchQueue.main) 
} 

}

拡張のViewController：CBCentralManagerDelegate：あなたが呼び出す必要があり、{ FUNCのcentralManagerDidUpdateState（_中央CBCentralManager）{

print(central.state) 
    if (central.state == .poweredOn){ 
     self.centralManager?.scanForPeripherals(withServices: nil, options: nil) 


    } 
    else { 
     print("nil") 
    } 


} 

func centralManager(_ central: CBCentralManager, didDiscover peripheral: CBPeripheral, advertisementData: [String : Any], rssi RSSI: NSNumber) { 
    peripherals.append(peripheral) 
    print(peripheral) 

} 

}

Answer 1

scanForPeripheralsWithServicesからまず

override func viewDidLoad() { 
    super.viewDidLoad() 

    manager = CBCentralManager(delegate: self, queue: GlobalBackgroundQueue, options: [CBCentralManagerOptionShowPowerAlertKey: true]) 


    if self.manager!.state == CBCentralManagerState.PoweredOn { 
     self.manager?.scanForPeripheralsWithServices(nil, options: nil) 

      delay(2, closure: { 
          self.manager?.stopScan() 
          print("scanning stopped.") 



          }) 
    } 
} 

func centralManagerDidUpdateState(central: CBCentralManager) { 
     if (central.state != CBCentralManagerState.PoweredOn) { 
       self.bluetoothStatus = false 
     } 
    } 



func centralManager(central: CBCentralManager, didDiscoverPeripheral peripheral: CBPeripheral, advertisementData: [String : AnyObject], RSSI: NSNumber) { 
       peripherals.append(["p": peripheral, "a": advertisementData, "r": RSSI]) 
    } 

Answer 2

迅速デリゲートメソッドの外に4

import CoreBluetooth 

var bleCentralManager: CBCentralManager! 
var arrayPeripheralList = [CBPeripheral]() 

viewDidLoad(){ 

    self.bleCentralManager = CBCentralManager(delegate: self, queue: nil) 
} 

func centralManagerDidUpdateState(_ central: CBCentralManager) { 

    switch central.state{ 

     case .poweredOn: 

      central.scanForPeripherals(withServices: nil, options: nil) 

     default: 

      bleCentralManager.stopScan() 
    } 
} 

func centralManager(_ central: CBCentralManager, didDiscover peripheral: CBPeripheral, advertisementData: [String : Any], rssi RSSI: NSNumber) { 

    if !(self.arrayPeripheralList.contains(peripheral)){ 

     self.arrayPeripheralList.append(peripheral) 
    } 
}