ios swift连接扫描枪代码
时间: 2023-05-18 18:00:36 浏览: 125
在iOS Swift中连接扫描枪的代码主要分为两个部分:Bluetooth连接和接收扫描数据。
首先,需要在应用中引入CoreBluetooth库。在ViewController中创建一个BLEManager类,并像下面这样定义其属性和方法:
```swift
class BLEManager: NSObject, CBCentralManagerDelegate, CBPeripheralDelegate {
var centralManager: CBCentralManager?
var peripheral: CBPeripheral?
var characteristic:CBCharacteristic?
override init() {
super.init()
centralManager = CBCentralManager(delegate: self, queue: nil)
}
func centralManagerDidUpdateState(_ central: CBCentralManager) {
if central.state == .poweredOn {
central.scanForPeripherals(withServices:nil, options: nil)
print("Scanning started")
} else {
print("Bluetooth not available.")
}
}
func centralManager(_ central: CBCentralManager, didDiscover peripheral: CBPeripheral, advertisementData: [String : Any], rssi RSSI: NSNumber) {
if (peripheral.name == "Your peripheral name") {
self.centralManager?.stopScan()
self.peripheral = peripheral
self.peripheral?.delegate = self
self.centralManager?.connect(self.peripheral!, options: nil)
}
}
func centralManager(_ central: CBCentralManager, didConnect peripheral: CBPeripheral) {
if peripheral == self.peripheral {
peripheral.discoverServices(nil)
print("Connected to your peripheral")
}
}
func peripheral(_ peripheral: CBPeripheral, didDiscoverServices error: Error?) {
for service in peripheral.services! {
peripheral.discoverCharacteristics(nil, for: service)
}
}
func peripheral(_ peripheral: CBPeripheral, didDiscoverCharacteristicsFor service: CBService, error: Error?) {
for characteristic in service.characteristics! {
if characteristic.uuid == CBUUID(string: "Your characteristic UUID") {
self.characteristic = characteristic
peripheral.setNotifyValue(true, for: characteristic)
print("Characteristic found")
}
}
}
func peripheral(_ peripheral: CBPeripheral, didUpdateValueFor characteristic: CBCharacteristic, error: Error?) {
if characteristic == self.characteristic {
if let data = characteristic.value {
let string = String(data: data, encoding: .utf8)!
print("Scanned barcode is: \(string)")
}
}
}
}
```
接着,在ViewController中初始化BLEManager并调用centralManager的方法:
```swift
var bleManager: BLEManager?
override func viewDidLoad() {
super.viewDidLoad()
bleManager = BLEManager()
}
```
最后,需要将扫描枪的UUID和特征UUID替换为自己的。这样,应用就能连接扫描枪并接收扫描数据了。