Check if iPhone is connected to the internet

Question

how I can check quickly if the iPhone is connected to internet or not, quickly...

Thanks...

score 5 · Answer 1 · answered May 25 '11 at 18:41

5

Have a look at Apple's Reachability class and this example app.

answered May 25 '11 at 18:41

Nick Weaver

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That way is more simple: – Maxime May 25 '11 at 19:26

score 2 · Answer 2 · answered May 25 '11 at 19:23

2

You should try to connect to the server with what you think is an appropriate timeout. NEVER use the reachability API until you've determined that your connection attempt failed and even then only if the error you receive from NSURLConnection et. al. is one that suggests you're not connected to the network. In that case, use the Reachability API to determine when you should try again.

Merely attempting a connection may bring up a network interface that wasn't available before.

answered May 25 '11 at 19:23

Mark Pauley

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This answer needs to be emphasized. Reachability has a lot of limitations to it and is not completely reliable. It can return true when there is no connection, in certain situations where network connection fluctuates. The only truly reliable way is to actually handle failure once your actual communication is attempted. Checking beforehand and assuming that it can't change in the meantime is a recipe for unhandled failure. – Leo Flaherty Jun 29 '15 at 09:26

score 1 · Answer 3 · answered Oct 31 '15 at 03:24

You can check for internet connection in swift using code below:

import SystemConfiguration

class Reachability: NSObject {

class func isConnectedToNetwork() -> Bool {
    var zeroAddress = sockaddr_in()
    zeroAddress.sin_len = UInt8(sizeofValue(zeroAddress))
    zeroAddress.sin_family = sa_family_t(AF_INET)
    let defaultRouteReachability = withUnsafePointer(&zeroAddress) {
        SCNetworkReachabilityCreateWithAddress(nil, UnsafePointer($0))
    }
    var flags = SCNetworkReachabilityFlags()
    if !SCNetworkReachabilityGetFlags(defaultRouteReachability!, &flags) {
        return false
    }
    let isReachable = (flags.rawValue & UInt32(kSCNetworkFlagsReachable)) != 0
    let needsConnection = (flags.rawValue & UInt32(kSCNetworkFlagsConnectionRequired)) != 0
    return (isReachable && !needsConnection)
}

Hope this helps!!

Check if iPhone is connected to the internet

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