CoreBluetooth系列教程(六):SwiftyBluetooth的使用

SwiftyBluetoothSwift中封装CoreBluetooth框架的一个开源库SwiftyBluetooth,个人觉得比较好用,是对CoreBluetooth的封装,可自行查看代码,下面来讲讲它的使用。
首先需要判断蓝牙打开的状态,蓝牙打开了才可进行下一步:

     SwiftyBlutooth.asyncState { state in
            switch state {
            case .poweredOn:
                print("蓝牙打开了,去搜索要连接设备")
             break

            case .poweredOff:
                print("蓝牙未打开,添加提示")
                break
            default:
                break

            }
        }

第二步,搜索蓝牙设备

// withServiceUUIDs:需要搜索的设备`CBUUID`数组,默认为nil,则搜索附近所有的蓝牙设备,浪费时间,所以最好传入`[CBUUIDConvertible]`
// timeoutAfter 搜索时长
SwiftyBluetooth.scanForPeripherals(withServiceUUIDs: nil, timeoutAfter: 15) { scanResult in
    switch scanResult {
        case .scanStarted:
            // The scan started meaning CBCentralManager scanForPeripherals(...) was called 
        case .scanResult(let peripheral, let advertisementData, let RSSI):
            // 解析`advertisementData`,找到要连接的设备,然后连接设备 
            self.peripheral = peripheral
        case .scanStopped(let error):
            // The scan stopped, an error is passed if the scan stopped unexpectedly
    }
}        

第三步,连接设备

   guard let peripheral = self.peripheral  else { return }
        // 开始连接设备
   peripheral.connect(withTimeout: time) {  result in
            switch result {
            case .success:  
                //连接成功,
                break      
            case .failure(let error):
                break
            }
        }

设备连接成功后,就可以进行readValuesetNotifyValuewriteValue的操作了,有不明白的同学可参考我这篇文章。剩余常用的API如下:

peripheral.discoverServices(withUUIDs: nil) { result in
    switch result {
    case .success(let services):
        break // An array containing all the services requested
    case .failure(let error):
        break // A connection error or an array containing the UUIDs of the services that we're not found
    }
}
peripheral.discoverCharacteristics(withUUIDs: nil, ofServiceWithUUID: "180A") { result in
    // The characteristics discovered or an error if something went wrong.
    switch result {
    case .success(let services):
        break // An array containing all the characs requested.
    case .failure(let error):
        break // A connection error or an array containing the UUIDs of the charac/services that we're not found.
    }
}

参考资料:

https://github.com/jordanebelanger/SwiftyBluetooth
https://www.jianshu.com/p/6feab1912f8c

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