我正在尝试创建一个可以扫描外围BLE设备的应用。我使用的是BLE Mini,我可以看到LightBlue和RedBear iPhone应用程序。我已确认在BLE开机时扫描开始,但是当我运行程序时,没有发现BLE设备。我已经看了很多在iOS中实现Corebluetooth的例子,看来我有所有必需的功能。我哪里错了?谢谢你的帮助。
// BlueToothVC.swift
import UIKit
import CoreBluetooth
class BlueToothVC: UIViewController, UITableViewDataSource, UITableViewDelegate, CBCentralManagerDelegate
{
@IBOutlet weak var tableView: UITableView!
var centralManager: CBCentralManager!
var peripherals: Array<CBPeripheral> = Array<CBPeripheral>()
override func viewDidLoad() {
super.viewDidLoad()
tableView.delegate = self
tableView.dataSource = self
centralManager = CBCentralManager(delegate: self, queue: DispatchQueue.main)
// Uncomment the following line to preserve selection between presentations
// self.clearsSelectionOnViewWillAppear = false
// Uncomment the following line to display an Edit button in the navigation bar for this view controller.
// self.navigationItem.rightBarButtonItem = self.editButtonItem()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
//CoreBluetooth methods
func centralManagerDidUpdateState(_ central: CBCentralManager)
{
if (central.state == CBManagerState.poweredOn)
{
print("scanning")
self.centralManager?.scanForPeripherals(withServices: nil, options: nil)
}
else
{
// do something like alert the user that ble is not on
}
}
private func centralManager(central: CBCentralManager, didDiscoverPeripheral peripheral: CBPeripheral, advertisementData: [String : AnyObject], RSSI: NSNumber)
{
peripherals.append(peripheral)
tableView.reloadData()
print("saw something")
}
func numberOfSections(in tableView: UITableView) -> Int {
return 1
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return peripherals.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = self.tableView.dequeueReusableCell(withIdentifier: "BTCell")! as! BTCell
let peripheral = peripherals[indexPath.row]
cell.label.text = peripheral.name
return cell
}
@IBAction func touchCancel(_ sender: AnyObject) {
self.navigationController?.popViewController(animated: true)
}
}
答案 0 :(得分:1)
您的didDiscoverPeripheral
委托方法不正确。
我注意到你已经成功private
;大概这是因为Xcode给你一个错误,即函数&#34;几乎与签名相匹配&#34;另一种方法并建议将其设为私有。这样做会从外部类中隐藏此方法并删除错误,但这意味着您没有实现didDiscoverPeripheral
委托方法。
在_
central:
private func centralManager(_ central: CBCentralManager, didDiscoverPeripheral peripheral: CBPeripheral, advertisementData: [String : AnyObject], RSSI: NSNumber)
{
peripherals.append(peripheral)
tableView.reloadData()
print("saw something")
}