检测是否在swift中启用了wifi

Question

在我的应用程序中，我有一些NSURLConnection.sendAsynchronousRequest但是因为如果用户禁用了wifi，应用程序崩溃了。

有没有办法检测wifi是否被禁用，所以我可以这样做：

if(wifi is enabled)
{
    NSURLConnection.sendAsynchronousRequest
}

Answer 1

现在是Swift 2.0：

func isConnectionAvailble()->Bool{

    let rechability = SCNetworkReachabilityCreateWithName(kCFAllocatorDefault, "www.apple.com")

    var flags : SCNetworkReachabilityFlags = SCNetworkReachabilityFlags()

    if SCNetworkReachabilityGetFlags(rechability!, &flags) == false {
        return false
    }

    let isReachable = (flags.rawValue & UInt32(kSCNetworkFlagsReachable)) != 0
    let needsConnection = (flags.rawValue & UInt32(kSCNetworkFlagsConnectionRequired)) != 0

    return (isReachable && !needsConnection)
}

Answer 2

Found the answer in this blog post：

第1步：

添加＆＃34; SystemConfiguration＆＃34;项目的框架

第2步：

将此功能添加到您的项目中：

func isConnectionAvailble()->Bool{

    var rechability = SCNetworkReachabilityCreateWithName(kCFAllocatorDefault, "www.apple.com").takeRetainedValue()

    var flags : SCNetworkReachabilityFlags = 0

    if SCNetworkReachabilityGetFlags(rechability, &flags) == 0
    {
        return false
    }

    let isReachable = (flags & UInt32(kSCNetworkFlagsReachable)) != 0
    let needsConnection = (flags & UInt32(kSCNetworkFlagsConnectionRequired)) != 0
    return (isReachable && !needsConnection)
}