Swift

IJReachability是一个使用Swift写的第三方网络检测类。可以测试网络是否连接，并支持3G和Wifi的检测。

使用样例：

import UIKit
 
class ViewController: UIViewController {
     
    @IBOutlet weak var statusLabel: UILabel!    
    @IBOutlet weak var typeLabel: UILabel!    
     
    override func viewDidLoad() {
        super.viewDidLoad()
    }    
     
    @IBAction func checkConnect(sender: AnyObject) {
        //判断连接状态
        if IJReachability.isConnectedToNetwork(){
            statusLabel.text = "网络连接：可用"
        }else{
            statusLabel.text = "网络连接：不可用"
        }
         
        //判断连接类型
        let statusType = IJReachability.isConnectedToNetworkOfType()
        switch statusType{
            case .WWAN:
                typeLabel.text = "连接类型：移动网络"
            case .WiFi:
                typeLabel.text = "连接类型：WiFi"
            case .NotConnected:
                typeLabel.text = "连接类型：没有网络连接"
        }
    }
     
    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
    }
}

--- IJReachability.swift ---

ddd