可达性无法通过蜂窝连接快速连接3

Question

这是我的课，用于检查我的应用程序的连接，因为它需要使用互联网/移动连接，但是如果通过蜂窝连接（3G连接），我的应用程序不起作用/ 4G/LTE）。任何人都可以帮我一把吗？感谢

public class Reachability { 

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(MemoryLayout.size(ofValue: zeroAddress)) 
    zeroAddress.sin_family = sa_family_t(AF_INET) 

    let defaultRouteReachability = withUnsafePointer(to: &zeroAddress) { 
     $0.withMemoryRebound(to: sockaddr.self, capacity: 1) {zeroSockAddress in 
      SCNetworkReachabilityCreateWithAddress(nil, zeroSockAddress) 
     } 
    } 

    var flags: SCNetworkReachabilityFlags = SCNetworkReachabilityFlags(rawValue: 0) 
    if SCNetworkReachabilityGetFlags(defaultRouteReachability!, &flags) == false { 
     return false 
    } 

    let isReachable = flags == .reachable 
    let needsConnection = flags == .connectionRequired 
    let wWAN = flags == .isWWAN 

    return isReachable || wWAN && !needsConnection 

} 
} 

Answer 1

我在我的代码中使用了这种方法，以便查找设备是否连接到互联网或不！我发现了StackOverFlow上的代码，但不记得链接。如果有人知道链接请评论，所以我可以更新帖子

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(MemoryLayout.size(ofValue: zeroAddress)) 
    zeroAddress.sin_family = sa_family_t(AF_INET) 

    let defaultRouteReachability = withUnsafePointer(to: &zeroAddress) { 
     $0.withMemoryRebound(to: sockaddr.self, capacity: 1) {zeroSockAddress in 
      SCNetworkReachabilityCreateWithAddress(nil, zeroSockAddress) 
     } 
    } 

    var flags: SCNetworkReachabilityFlags = SCNetworkReachabilityFlags(rawValue: 0) 
    if SCNetworkReachabilityGetFlags(defaultRouteReachability!, &flags) == false { 
     return false 
    } 

    /* Only Working for WIFI 
    let isReachable = flags == .reachable 
    let needsConnection = flags == .connectionRequired 

    return isReachable && !needsConnection 
    */ 

    // Working for Cellular and WIFI 
    let isReachable = (flags.rawValue & UInt32(kSCNetworkFlagsReachable)) != 0 
    let needsConnection = (flags.rawValue & UInt32(kSCNetworkFlagsConnectionRequired)) != 0 
    let ret = (isReachable && !needsConnection) 

    return ret 

}