ios - 二进制运算符“＆”不能应用于类型为“SCNetworkReachabilityFlags”和“Int”的操作数

在我的应用程序中尝试检查internet连接时出现此错误。
我使用Xcode 7.1.1 Swift 2.0
代码块如下

public class Reach {

class func isConnectedToNetwork() -> Bool {

    var zeroAddress = sockaddr_in(sin_len: 0, sin_family: 0, sin_port: 0, sin_addr: in_addr(s_addr: 0), sin_zero: (0, 0, 0, 0, 0, 0, 0, 0))
    zeroAddress.sin_len = UInt8(sizeofValue(zeroAddress))
    zeroAddress.sin_family = sa_family_t(AF_INET)

    let defaultRouteReachability = withUnsafePointer(&zeroAddress, {
        SCNetworkReachabilityCreateWithAddress(nil, UnsafePointer($0))//.takeRetainedValue()
    })

    var flags: SCNetworkReachabilityFlags = []
    if SCNetworkReachabilityGetFlags( defaultRouteReachability!, &flags) == false {
        return false
    }

    //The following two lines shows the error
    let isReachable = (flags  & (kSCNetworkFlagsReachable)) != 0
    let needsConnection = (flags  & (kSCNetworkFlagsConnectionRequired)) != 0

    return isReachable && !needsConnection
}

}

我尝试将标志强制转换为Int，将NetworkFlag强制转换为UInt32，反之亦然，但它仍然显示警告并在执行时获取错误。我试了一下

(flags  & UInt32(kSCNetworkFlagsReachable))
(Int(flags)  & (kSCNetworkFlagsReachable))
(flags  & (kSCNetworkFlagsReachable) as! UInt32)
(flags as! Int  & (kSCNetworkFlagsReachable))

但什么都没用。有人能解决吗
SCNetworkReachabilityFlags的内容

public struct SCNetworkReachabilityFlags : OptionSetType {
public init(rawValue: UInt32)

public static var TransientConnection: SCNetworkReachabilityFlags { get }
public static var Reachable: SCNetworkReachabilityFlags { get }
public static var ConnectionRequired: SCNetworkReachabilityFlags { get }
public static var ConnectionOnTraffic: SCNetworkReachabilityFlags { get }
public static var InterventionRequired: SCNetworkReachabilityFlags { get }
public static var ConnectionOnDemand: SCNetworkReachabilityFlags { get } // __OSX_AVAILABLE_STARTING(__MAC_10_6,__IPHONE_3_0)
public static var IsLocalAddress: SCNetworkReachabilityFlags { get }
public static var IsDirect: SCNetworkReachabilityFlags { get }

public static var IsWWAN: SCNetworkReachabilityFlags { get }
// TARGET_OS_IPHONE

public static var ConnectionAutomatic: SCNetworkReachabilityFlags { get }

}

最佳答案

试着去吧

let isReachable = flags.contains(SCNetworkReachabilityFlags.Reachable)
let needsConnection = flags.contains(SCNetworkReachabilityFlags.ConnectionRequired)

OptionSetType对于contains有一个方便的方法，因此希望可以检查是否设置了标志

关于ios - 二进制运算符“＆”不能应用于类型为“SCNetworkReachabilityFlags”和“Int”的操作数，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/34260333/