将 UUID 转换为字符串表示形式,例如:1816 为骑行速度和节奏
Convert UUID to String representation eg: 1816 to Cycling Speed And Cadence
我正在通过蓝牙连接到 Cycling Speed and Cadence 服务,并将外围设备保存到数组中(用于表格视图)。
我已经实现了这个结构
struct BTPeripheral: Identifiable {
let id: Int
let name: String
let uuid: UUID
let desc: String
}
我的电话是
discoveredBTDevices.append(BTPeripheral.init(
id: discoveredBTDevices.count,
name: peripheral.name!,
uuid: peripheral.identifier,
desc: service.uuid.uuidstring) // trying service.uuid results in error
)
导致此输出
id: 0,
name: "Wahoo CADENCE 1DE8",
uuid: E98F3843-1C6A-E4DE-6EF3-76B013950007,
desc: "1816"
描述是字符串1816(这是cycle Speed & Cad服务的UUID)
let serviceCyclingSpeedAndCadenceUUID = CBUUID(string: "1816")
如何将 1816 转换为打印出来的字符串“Cycling Speed and Cadence”
print(service.uuid) // this results in "cycling Speed and Cadence"
如上所述,输入 service.uuid
会导致错误 Cannot convert value of type 'CBUUID' to expected argument type 'String'
你可以得到它的description
(IIRC,这是print
最终会做的,因为CBUUID
符合CustomStringConvertible
):
service.uuid.description
或者使用字符串插值:
"\(service.uuid)"
debugDescription
也产生相同的结果,但我不会使用它,除非这实际上是为了调试。
我正在通过蓝牙连接到 Cycling Speed and Cadence 服务,并将外围设备保存到数组中(用于表格视图)。
我已经实现了这个结构
struct BTPeripheral: Identifiable {
let id: Int
let name: String
let uuid: UUID
let desc: String
}
我的电话是
discoveredBTDevices.append(BTPeripheral.init(
id: discoveredBTDevices.count,
name: peripheral.name!,
uuid: peripheral.identifier,
desc: service.uuid.uuidstring) // trying service.uuid results in error
)
导致此输出
id: 0,
name: "Wahoo CADENCE 1DE8",
uuid: E98F3843-1C6A-E4DE-6EF3-76B013950007,
desc: "1816"
描述是字符串1816(这是cycle Speed & Cad服务的UUID)
let serviceCyclingSpeedAndCadenceUUID = CBUUID(string: "1816")
如何将 1816 转换为打印出来的字符串“Cycling Speed and Cadence”
print(service.uuid) // this results in "cycling Speed and Cadence"
如上所述,输入 service.uuid
会导致错误 Cannot convert value of type 'CBUUID' to expected argument type 'String'
你可以得到它的description
(IIRC,这是print
最终会做的,因为CBUUID
符合CustomStringConvertible
):
service.uuid.description
或者使用字符串插值:
"\(service.uuid)"
debugDescription
也产生相同的结果,但我不会使用它,除非这实际上是为了调试。