iOS 有关WIFI讯息获取

iOS 有关WIFI讯息获取

    前几天碰到一个需求，是有关于监测App内获取网络权限的需求，由于之前没碰过这种需求 ，只能面向google编程，网上搜到的资料都是关于OC的。

    需求用到的类大部分是基于C，需要运用到大部分指针方面的写法。对于长期使用swift开发的人来说，写起来可能会感觉到很陌生。网上有关这种需求的写法的文章也不多，我只能自己一行一行地翻译成swift。 在这里记录一下。

import SystemConfiguration.CaptiveNetwork

import CoreTelephony

流量监测

    //流量监测
    func getInterfaceBytes() -> UInt32 {
        var addrsPointer : UnsafeMutablePointer<ifaddrs>? = nil
        
        var inBytes : UInt32 = 0
        var outBytes : UInt32 = 0
        
        if getifaddrs(&addrsPointer) == 0 {
            var pointer = addrsPointer
            while pointer != nil {
                if let addrs = pointer?.pointee {
                    let name = String(cString: addrs.ifa_name)
                    if addrs.ifa_addr.pointee.sa_family == UInt8(AF_LINK) {
                        if name.hasPrefix("en") { // Wifi
                            let networkData = unsafeBitCast(addrs.ifa_data, to: UnsafeMutablePointer<if_data>.self)
                            inBytes += networkData.pointee.ifi_ibytes
                            outBytes += networkData.pointee.ifi_obytes
                        } else if name.hasPrefix("pdp_ip") { // WWAN
                            let networkData = unsafeBitCast(addrs.ifa_data, to: UnsafeMutablePointer<if_data>.self)
                            inBytes += networkData.pointee.ifi_ibytes
                            outBytes += networkData.pointee.ifi_obytes
                        }
                    }
                }
                pointer = pointer?.pointee.ifa_next
            }
            freeifaddrs(addrsPointer)
        }
        return  inBytes
    }

获取wifi地址

   func getWiFiAddress() -> String? {
        var address : String?
        // Get list of all interfaces on the local machine:
        var ifaddr : UnsafeMutablePointer<ifaddrs>? = nil
        if getifaddrs(&ifaddr) == 0 {
            // For each interface ...
            var ptr = ifaddr
            while ptr != nil {
            }
            freeifaddrs(ifaddr)
        }
        return address
    }

获取wifi名称

   //获取wifi名称
    func fetchSSIDInfo() ->  String {
        var currentSSID = "WifiNameIsNil"
        
        if let interfaces:CFArray = CNCopySupportedInterfaces() {
            for i in 0..<CFArrayGetCount(interfaces){
                let interfaceName: UnsafeRawPointer = CFArrayGetValueAtIndex(interfaces, i)
                let rec = unsafeBitCast(interfaceName, to: AnyObject.self)
                let unsafeInterfaceData = CNCopyCurrentNetworkInfo("\(rec)" as CFString)
                if unsafeInterfaceData != nil {
                    let interfaceData = unsafeInterfaceData! as Dictionary!
                    currentSSID = interfaceData![NSString(string: "SSID")] as! String
                }
            }
        }
        return currentSSID
    }

从手机状态栏获取当前网络状态

 //从状态栏获取网络状态
    func getNetworkTypeFromStatusBar() -> String {
        
        var type : Int = 0
        
        let app = UIApplication.shared
        let statusBar : UIView = app.value(forKeyPath: "statusBar") as! UIView
        if (statusBar is NSNull){
            return "Unknow";
        }
        
        if statusBar.isKind(of: NSClassFromString("UIStatusBar_Modern")!) {
            // 在 iPhone X 上 statusBar 属于 UIStatusBar_Modern ，需要特殊处理
            let currentData = statusBar.value(forKeyPath: "statusBar.currentData") as! NSObject
            //            BOOL wifiEnable = [[currentData valueForKeyPath:@"_wifiEntry.isEnabled"] boolValue];
            let wifiEnable = currentData.value(forKeyPath: "_wifiEntry.isEnabled") as! Bool
            //            // 这里不能用 _cellularEntry.isEnabled 来判断，该值即使关闭仍然有是 YES
            //            BOOL cellularEnable = [[currentData valueForKeyPath:@"_cellularEntry.type"] boolValue];
            return  wifiEnable ? "WiFi" : "CellularData"
            //                cellularEnable ? ZYNetworkTypeCellularData : ZYNetworkTypeOffline;
            
        } else {
            // 传统的状态栏
            let children = (statusBar.value(forKeyPath: "foregroundView") as! UIView).subviews
            for child in children {
                if (child.isKind(of: NSClassFromString("UIStatusBarDataNetworkItemView")!)) {
                    
                    type = child.value(forKeyPath: "dataNetworkType") as! Int
                    return type == 5 ? "WiFi" : "CellularData"
                }
            }
            
        }
        
        return ""
    }