不允许 Swift 蓝牙写入

Question

我尝试使用Bluejay库将命令从iphone写入BT ble，如下所示

func write(command: Command) {
    let weakSelf = self
    Utils.delay(0.3) {
        debugPrint("[\(self.getTodayString())]Writing to device: \(command.string)");
        debugPrint("hunter: weakSelf.bdeCharacteristics = \(weakSelf.bdeCharacteristics) and bdeService= \(weakSelf.bdeService) , and isConnected = \(weakSelf.isConnected)");

        weakSelf.bluejay.write(to: weakSelf.bdeCharacteristics, value: command.string) { (result) in
            switch result {
            case .success:
                debugPrint("Write to sensor location is successful.")
            //case .cancelled:
                //debugPrint("Cancelled write to sensor location.")
            case .failure(let error):
                debugPrint("Failed to write to sensor location with error: \(error.localizedDescription)")
            }
        }
    }

}

写命令时，记录如下：

"[2020-1-13 0:30:24]正在写入设备：SystemOn:\n\0" 2020-01-13 00:30:24.247 [Bluejay] [main] > 请求写入特征：0000FFB2-0000-1000-8000-00805F9B34FB，服务：0000FFB0-0000-1000-8000-00805F9B34FB ... 2020-01-13 00:30:24.248 [Bluejay] [main] > 队列将启动 Bluejay.DiscoverService... 2020-01-13 00:30:24.248 [Bluejay] [main] > 队列已删除 Bluejay.DiscoverService，因为它已完成。 2020-01-13 00:30:24.249 [Bluejay] [main] > 队列为空，没有可更新的内容。 2020-01-13 00:30:24.249 [Bluejay] [main] > 队列将启动 Bluejay.DiscoverCharacteristic... 2020-01-13 00:30:24.250 [Bluejay] [main] > Bluejay.WriteCharacteristic 添加到队列中，UUID：15A4B937-7BCB-4F02-B6D5-96E04D480320。 2020-01-13 00:30:24.250 [Bluejay] [main] > 队列已删除 Bluejay.DiscoverCharacteristic，因为它已完成。 2020-01-13 00:30:24.251 [Bluejay] [main] > 队列将启动 Bluejay.WriteCharacteristic... 2020-01-13 00:30:24.252 [Bluejay] [main] > 开始写入特征：0000FFB2-0000-1000-8000-00805F9B34FB，服务：0000FFB0-0000-1000-8000-00805F9B34FB on 8703E44D2-42EE- CC5D-10675DF5DB09。 2020-01-13 00:30:24.253 [Bluejay] [main] > 写入特征失败：0000FFB2-0000-1000-8000-00805F9B34FB，服务：0000FFB0-0000-1000-8000-00805F9B34FB 上 845E44D2-4-EE-4-B34FB CC5D-10675DF5DB09 出现错误：不允许写入。 “无法写入传感器位置并出现错误：不允许写入。”

结果显示：无法写入传感器位置并出现错误：不允许写入。

注意：项目原形式 swift 3 升级为 swift 4

Answer 1

根据 i found this solution

在 swift 4 之后，CBCharacteristicWriteWithResponse 已更改为 withoutResponse

所以我用 withoutResponse 替换 withResponse ，这个问题就解决了。