android 连接wifi

1.目的安卓代码连接WiFi（android 4.0 ，AS4.0）

2.代码：

//创建WiFi连接信息

public WifiConfiguration createWifiInfo(String SSID, String Password, int Type) {   WifiConfiguration configuration = new WifiConfiguration();   configuration.allowedAuthAlgorithms.clear();   configuration.allowedGroupCiphers.clear();   configuration.allowedKeyManagement.clear();   configuration.allowedPairwiseCiphers.clear();   configuration.allowedProtocols.clear();   configuration.SSID = "\"" + SSID + "\"";   WifiConfiguration tempConfig = this.isExsits(SSID);   if(tempConfig != null) {      //mWifiManager.removeNetwork(tempConfig.networkId);   }   switch (Type) {      case 1://不加密         configuration.wepKeys[0] = "";         configuration.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE);         configuration.wepTxKeyIndex = 0;         configuration.priority= 20000;         break;      case 2://wep加密         configuration.hiddenSSID = true;         configuration.wepKeys[0] = "\"" + Password +"\"";         configuration.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.SHARED);         configuration.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.CCMP);         configuration.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.TKIP);         configuration.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP40);         configuration.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP104);         configuration.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE);         break;      case 3: //wpa加密         configuration.preSharedKey = "\"" + Password + "\"";         configuration.hiddenSSID = true;         configuration.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.OPEN);         configuration.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.TKIP);         configuration.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.CCMP);         configuration.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.WPA_PSK);         configuration.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.CCMP);         configuration.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.TKIP);         configuration.status = WifiConfiguration.Status.ENABLED;         break;   }   return  configuration;}

 //初始化WiFi  WifiManager mWifiManager = (WifiManager) getApplicationContext().getSystemService(WIFI_SERVICE); //初始化类  WifiConnectUtil wifiUtil = new WifiConnectUtil(mWifiManager);  //连接调用连接类  int networkId = mWifiManager.addNetwork(wifiUtil.createWifiInfo(settingCardInfo.SSID,settingCardInfo.SSIDPassword,3));//连接WiFi mWifiManager.enableNetwork(networkId, true);

mWifiManager.saveConfiguration();//保存连接信息

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