if (central.state == .poweredOn) kontrolune girmiyor , bluetooth listesi gelmiyor ne yapabilim ?
导入核心蓝牙 导入 UIKit
类 ViewController: UIViewController { var centralManager: CBCentralManager? var 外围设备 = Array()
@IBOutlet weak var tableView: UITableView!
override func viewDidLoad() {
super.viewDidLoad()
centralManager = CBCentralManager(delegate: self, queue: DispatchQueue.main)
}
扩展 View Controller :CBCentralManagerDelegate { func centralManagerDidUpdateState(_ central: 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)
}
最佳答案
swift 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)
}
}
关于ios - swift 3 : Bluetooth list is empty，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/43632425/