import Foundation import SystemConfiguration
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(sizeofValue(zeroAddress))
zeroAddress.sin_family = sa_family_t(AF_INET)
let defaultRouteReachability = withUnsafePointer(&zeroAddress) {
SCNetworkReachabilityCreateWithAddress(kCFAllocatorDefault, UnsafePointer($0))
}
var flags: SCNetworkReachabilityFlags = SCNetworkReachabilityFlags(rawValue: 0)
if SCNetworkReachabilityGetFlags(defaultRouteReachability!, &flags) == false {
return false
}
let isReachable = flags == .Reachable
let needsConnection = flags == .ConnectionRequired
return isReachable && !needsConnection
}
}
I am using the above written code for checking internet connection for my app, this checks only 3G and WIFI connections. But I need to check for 4G Connections also. Can anyone help me to find the solution.
Here is the Reachability from Apple, you need to download and drag Reachability.h/.m to your project.
Then import CoreTelephony and try below.
if let reachability = Reachability.forInternetConnection() {
reachability.startNotifier()
let status = reachability.currentReachabilityStatus()
if status == .init(0) {
// .NotReachable
print("Not Reachable")
}
else if status == .init(1) {
// .ReachableViaWiFi
print("Reachable Via WiFi")
}
else if status == .init(2) {
// .ReachableViaWWAN
let netInfo = CTTelephonyNetworkInfo()
if let cRAT = netInfo.currentRadioAccessTechnology {
switch cRAT {
case CTRadioAccessTechnologyGPRS,
CTRadioAccessTechnologyEdge,
CTRadioAccessTechnologyCDMA1x:
print("Reachable Via 2G")
case CTRadioAccessTechnologyWCDMA,
CTRadioAccessTechnologyHSDPA,
CTRadioAccessTechnologyHSUPA,
CTRadioAccessTechnologyCDMAEVDORev0,
CTRadioAccessTechnologyCDMAEVDORevA,
CTRadioAccessTechnologyCDMAEVDORevB,
CTRadioAccessTechnologyeHRPD:
print("Reachable Via 3G")
case CTRadioAccessTechnologyLTE:
print("Reachable Via 4G")
default:
fatalError("error")
}
}
}
}
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