可達性無法通過蜂窩連接快速連接3

Question

這是我的課，用於檢查我的應用程序的連接，因爲它需要使用互聯網/移動連接，但是如果通過蜂窩連接（3G連接），我的應用程序不起作用/ 4G/LTE）。任何人都可以幫我一把嗎？感謝

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

我在我的代碼中使用了這種方法，以便查找設備是否連接到互聯網或不！我發現了StackOverFlow上的代碼，但不記得鏈接。如果有人知道鏈接請評論，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 

}