连接WiFi工具类

 public class WifiConnect {

     WifiManager wifiManager;

     // 构造函数
     public WifiConnect(WifiManager wifiManager) {
         this.wifiManager = wifiManager;
     }

     // 提供一个外部接口，传入要连接的无线网
     public boolean Connect(String SSID, String Password, int Type) {

         WifiConfiguration wifiConfig = this
                 .CreateWifiInfo(SSID, Password, Type);

         WifiConfiguration tempConfig = this.IsExsits(SSID);
         if (tempConfig != null) {
             wifiManager.removeNetwork(tempConfig.networkId);
         }

         int netID = wifiManager.addNetwork(wifiConfig);
         boolean flag = wifiManager.enableNetwork(netID, true);
         return flag;
     }

     // 查看以前是否也配置过这个网络
     private WifiConfiguration IsExsits(String SSID) {
         List<WifiConfiguration> existingConfigs = wifiManager
                 .getConfiguredNetworks();
         for (WifiConfiguration existingConfig : existingConfigs) {
             if (existingConfig.SSID.equals("\"" + SSID + "\"")) {
                 return existingConfig;
             }
         }
         return null;
     }

     // 配置WifiConfiguration
     public WifiConfiguration CreateWifiInfo(String SSID, String Password,
             int Type) {
         WifiConfiguration config = new WifiConfiguration();
         config.allowedAuthAlgorithms.clear();
         config.allowedGroupCiphers.clear();
         config.allowedKeyManagement.clear();
         config.allowedPairwiseCiphers.clear();
         config.allowedProtocols.clear();
         config.SSID = "\"" + SSID + "\"";

         WifiConfiguration tempConfig = this.IsExsits(SSID);
         if (tempConfig != null) {
             wifiManager.removeNetwork(tempConfig.networkId);
         }

         if (Type == 1) // WIFICIPHER_NOPASS
         {
             config.wepKeys[0] = "";
             config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE);
             config.wepTxKeyIndex = 0;
         }
         if (Type == 2) // WIFICIPHER_WEP
         {
             config.hiddenSSID = true;
             config.wepKeys[0] = "\"" + Password + "\"";
             config.allowedAuthAlgorithms
                     .set(WifiConfiguration.AuthAlgorithm.SHARED);
             config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.CCMP);
             config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.TKIP);
             config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP40);
             config.allowedGroupCiphers
                     .set(WifiConfiguration.GroupCipher.WEP104);
             config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE);
             config.wepTxKeyIndex = 0;
         }
         if (Type == 3) // WIFICIPHER_WPA
         {
             config.preSharedKey = "\"" + Password + "\"";
             config.hiddenSSID = true;
             config.allowedAuthAlgorithms
                     .set(WifiConfiguration.AuthAlgorithm.OPEN);
             config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.TKIP);
             config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.WPA_PSK);
             config.allowedPairwiseCiphers
                     .set(WifiConfiguration.PairwiseCipher.TKIP);
             // config.allowedProtocols.set(WifiConfiguration.Protocol.WPA);
             config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.CCMP);
             config.allowedPairwiseCiphers
                     .set(WifiConfiguration.PairwiseCipher.CCMP);
             config.status = WifiConfiguration.Status.ENABLED;
         }
         return config;
     }

 }