因此，我编写了一个（相当）简单的代码来扫描蓝牙设备，并使用一个匹配的名称连接到该设备，但是，永远不会调用应该在找到BT设备时调用的功能。有人可以看看这个，看看您是否可以在我的工作中发现错误？
我尝试过的事情：
将扫描初始化中的服务uuid更改为nil以扫描所有设备
使用NSLog语句检测didDiscover程序何时找到设备
在每个函数开始时要中断的一堆断点。
我对此感到非常困惑，我跟随了一个称为The 12 Steps of Bluetooth的页面，并仔细检查了Apple开发人员参考页面。
import UIKit
import CoreBluetooth
class ViewController: UIViewController, CBCentralManagerDelegate, CBPeripheralDelegate {
var manager:CBCentralManager!
var peripheral:CBPeripheral!
var peripherals = Array<CBPeripheral>()
let devName = "CHS Bus Loop"
let servUUID = CBUUID(string: "6e400001-b5a3-f393-e0a9-e50e24dcca9e")
let txChar = CBUUID(string: "6E400002-B5A3-F393-E0A9-E50E24DCCA9E")
let rxChar = CBUUID(string: "6E400003-B5A3-F393-E0A9-E50E24DCCA9E")
var txCharacteristic: CBCharacteristic?
override func viewDidLoad() {
super.viewDidLoad()
manager = CBCentralManager(delegate: self, queue: nil)
textLabel.text="CHS We Are One"
// Do any additional setup after loading the view, typically from a nib.
}
func centralManagerDidUpdateState(_ central: CBCentralManager) {
if central.state == CBManagerState.poweredOn {
central.scanForPeripherals(withServices: nil, options: nil)
} else {
print("Bluetooth not available.")
}
}
func centralManager(central: CBCentralManager, didDiscoverperipheral peripheral: CBPeripheral, advertisementData: [String : AnyObject], RSSI: NSNumber) {
let device = (advertisementData as NSDictionary)
.object(forKey: CBAdvertisementDataLocalNameKey)
as? NSString
if device?.contains(devName) == true{
self.manager.stopScan()
self.peripheral = peripheral
self.peripheral.delegate = self
manager.connect(peripheral, options: nil)
}
func centralManager2(central: CBCentralManager, didConnectperipheral peripheral: CBPeripheral){
peripheral.discoverServices(nil)
}
func peripheral(peripheral: CBPeripheral,didDiscoverServices error: NSError?){
for service in peripheral.services! {
let thisService = service as CBService
if service.uuid == txChar{
peripheral.discoverCharacteristics(nil, for:thisService)
}
}
}
func peripheral(
peripheral: CBPeripheral,
didDiscoverCharacteristicsForService service: CBService,
error: NSError?) {
for characteristic in service.characteristics! {
let thisCharacteristic = characteristic as CBCharacteristic
if thisCharacteristic.uuid == rxChar {
self.peripheral.setNotifyValue(
true,
for: thisCharacteristic
)
}
}
}
peripherals.append(peripheral)
//tableView.reloadData()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
//@IBOutlet weak var tableView: UITableView!
@IBOutlet weak var deviceSelector: UITableView!
@IBOutlet weak var textField1: UITextField!
@IBOutlet weak var textField2: UITextField!
@IBOutlet weak var textField3: UITextField!
@IBOutlet weak var textField4: UITextField!
@IBOutlet weak var textField5: UITextField!
@IBOutlet weak var textField6: UITextField!
@IBOutlet weak var direct1: UISegmentedControl!
@IBOutlet weak var direct2: UISegmentedControl!
@IBOutlet weak var direct3: UISegmentedControl!
@IBOutlet weak var direct4: UISegmentedControl!
@IBOutlet weak var direct5: UISegmentedControl!
@IBOutlet weak var direct6: UISegmentedControl!
@IBOutlet weak var textLabel: UILabel!
@IBAction func UpdateDecimal(_ sender: Any) {
var LED1=""
var LED2=""
var LED3=""
var LED4=""
var LED5=""
var LED6=""
var combine=""
if direct1.selectedSegmentIndex == 2{
LED1 = "002"
}else{
LED1 = self.textField1.text! + "\(direct1.selectedSegmentIndex)"
}
if direct2.selectedSegmentIndex == 2{
LED2 = "002"
}else{
LED2 = self.textField2.text! + "\(direct2.selectedSegmentIndex)"
}
if direct3.selectedSegmentIndex == 2{
LED3 = "002"
}else{
LED3 = self.textField3.text! + "\(direct3.selectedSegmentIndex)"
}
if direct4.selectedSegmentIndex == 2{
LED4 = "002"
}else{
LED4 = self.textField4.text! + "\(direct4.selectedSegmentIndex)"
}
if direct5.selectedSegmentIndex == 2{
LED5 = "002"
}else{
LED5 = self.textField5.text! + "\(direct5.selectedSegmentIndex)"
}
if direct6.selectedSegmentIndex == 2{
LED6 = "002"
}else{
LED6 = self.textField6.text! + "\(direct6.selectedSegmentIndex)"
}
if LED1.characters.count == 2{
LED1="0" + LED1
}
if LED2.characters.count == 2{
LED2="0" + LED2
}
if LED3.characters.count == 2 {
LED3="0" + LED3
}
if LED4.characters.count == 2{
LED4="0" + LED4
}
if LED5.characters.count == 2{
LED5="0" + LED5
}
if LED6.characters.count == 2{
LED6="0" + LED6
}
if LED1.characters.count + LED2.characters.count + LED3.characters.count + LED4.characters.count + LED5.characters.count + LED6.characters.count != 18{
textLabel.text = "All MUST have 2 digits"
}else{
combine = LED1 + LED2 + LED3 + LED4 + LED5 + LED6
textLabel.text = combine
}
let data = combine.data(using: String.Encoding.utf8)
peripheral.writeValue(data!, for: txCharacteristic!,
type:CBCharacteristicWriteType.withoutResponse);
}
}
最佳答案
在@Larme的帮助下，我发现有一些swift2函数和一些swift3函数，它们不能一起使用。这是他的全部称赞：
替换为：func centralManager（中央：CBCentralManager，didDiscoverperipheral外围设备：CBPeripheral，advertData：[String：AnyObject]，RSSI：NSNumber）=> func centralManager（_中央：CBCentralManager，didDiscover外设：CBPeripheral，advertData：[String：Any]，rssi RSSI：NSNumber）。再次阅读我的链接答案。检查委托方法的所有真实声明，尤其是没有“ _”的声明。而且您不能像您一样拥有一个centralManager2（），它也不起作用。
如果@Larme希望自己发布答案，我将做出正确的决定，并删除我的。
关于ios - Swift没有发现任何蓝牙设备，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/43459066/