我有一些代码可以获取当前GCD队列的标签以进行记录,在Swift 2中看起来像这样:
if let queueName
= String(UTF8String: dispatch_queue_get_label(DISPATCH_CURRENT_QUEUE_LABEL)) where !queueName.isEmpty {
detailedMessage += "[" + queueName + "] "
}
Xcode 8将其转换为Swift 3之后,它看起来像这样:
if let queueName
= String(validatingUTF8: DISPATCH_CURRENT_QUEUE_LABEL.label), !queueName.IsEmpty {
detailedMessage += "[" + queueName + "] "
}
但是,Xcode在构建时给我以下错误:
元组类型'()'的值没有成员'label'
在Swift 3中,我找不到任何获取当前队列标签的方法。有人可以帮忙吗?
谢谢,
大卫
更新了
这是上下文的功能:
public func log(_ message: String,
tag: String,
level: Logger.LogLevel,
userInfo: [String : String]?,
functionName: StaticString,
fileName: StaticString,
lineNumber: Int) {
var detailedMessage = ""
let formattedDate = self._dateFormatter.string(from: Date())
detailedMessage += "\(formattedDate) "
detailedMessage += "[\(level.description)] "
if Thread.isMainThread {
detailedMessage += "[main] "
} else {
if let threadName = Thread.current.name , !threadName.isEmpty {
detailedMessage += "[" + threadName + "] "
} else if let queueName
= String(validatingUTF8: DISPATCH_CURRENT_QUEUE_LABEL.label) , !queueName.isEmpty {
detailedMessage += "[" + queueName + "] "
} else {
detailedMessage += "[" + String(format:"%p", Thread.current) + "] "
}
}
let lastPathComponent = NSString(stringLiteral: fileName).lastPathComponent
detailedMessage += "[" + lastPathComponent + ":" + String(lineNumber) + "] "
detailedMessage += "\(functionName) "
let fullMessage = self.messageWithTag(tag, message: message)
detailedMessage += "> \(fullMessage)"
NSLog("\(fullMessage)")
}
最佳答案
您可以使用该方法
let cName = __dispatch_queue_get_label(nil)
let name = String(cString: cName, encoding: .utf8)
关于ios - 在Swift 3中获取GCD标签,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/40186868/