Wifi连接有密码的SSID是wifiManager.addNetwork返回为-1

           这些天发现以前原本写好的Wifi工具在连接Wifi的时候出问题了，甚至会直接崩溃，这对于app开发者来说是一个致命的伤害，反正我现在已经遍体鳞伤了。

        连接Wifi的流程：

               1、如果是没有密码的Wifi，直接连接即可；

               2、如果是有密码的Wifi，需要按Wifi密码加密的加密情况来连接；

        废话不多说，先上代码：

        在修改之前连接的代码：

<span style="font-size:14px;">           public WifiConfiguration CreateWifiInfo(ScanResult scan, String Password) {WifiConfiguration config = new WifiConfiguration();config.hiddenSSID = false;config.status = WifiConfiguration.Status.ENABLED;if (scan.capabilities.contains("WEP")) {config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE);config.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.OPEN);config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP104);config.SSID = "\"" + scan.SSID + "\"";config.wepTxKeyIndex = 0;config.wepKeys[0] = Password;} else if (scan.capabilities.contains("PSK")) {config.SSID = "\"" + scan.SSID + "\"";config.preSharedKey = "\"" + Password + "\"";} else if (scan.capabilities.contains("EAP")) {config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.WPA_EAP);config.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.OPEN);config.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.TKIP);config.allowedProtocols.set(WifiConfiguration.Protocol.WPA);config.SSID = "\"" + scan.SSID + "\"";config.preSharedKey = "\"" + Password + "\"";} else {config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE);config.SSID = "\"" + scan.SSID + "\"";config.preSharedKey = null;config.wepKeys[0] = "\"" + "\"";config.wepTxKeyIndex = 0;}return config;   }</span>

        在连接Wifi的时候，执行到这里，然后去addNetwork的时候，返回的netId为-1，之后，由于没有做netId做判断，程序就一直在这里执行，也不返回任何东西。添加判断之后，发现，有密码的Wifi还是连接不上。然后在网上找了资料关于addNetwork返回值为-1的解决方案，采纳建议之后，确实可以正常连接我Wifi。

<span style="font-size:14px;">           WifiConfiguration config = new WifiConfiguration();config.hiddenSSID = false;config.SSID=scan.SSID;config.status = WifiConfiguration.Status.ENABLED;/*if (scan.capabilities.contains("WEP")) {config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE);config.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.OPEN);config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP104);config.SSID = "\"" + scan.SSID + "\"";config.wepTxKeyIndex = 0;config.wepKeys[0] = Password;} else */if (scan.capabilities.contains("WPA")) {config.allowedProtocols.set(WifiConfiguration.Protocol.RSN);config.allowedProtocols.set(WifiConfiguration.Protocol.WPA);config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.WPA_PSK);config.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.CCMP);config.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.TKIP);config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP40);config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP104);config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.CCMP);config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.TKIP);config.preSharedKey = "\"".concat(Password).concat("\"");//config.SSID = "\"" + scan.SSID + "\"";//config.preSharedKey = "\"" + Password + "\"";} else if (scan.capabilities.contains("WEP")) {config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE);config.allowedProtocols.set(WifiConfiguration.Protocol.RSN);config.allowedProtocols.set(WifiConfiguration.Protocol.WPA);config.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.OPEN);config.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.SHARED);config.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.CCMP);config.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.TKIP);config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP40);config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP104);        if (getHexKey(Password)) config.wepKeys[0] = Password;        else config.wepKeys[0] = "\"".concat(Password).concat("\"");        config.wepTxKeyIndex = 0;//config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.WPA_EAP);//config.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.OPEN);//config.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.TKIP);//config.allowedProtocols.set(WifiConfiguration.Protocol.WPA);//config.SSID = "\"" + scan.SSID + "\"";//config.preSharedKey = "\"" + Password + "\"";} else {//config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE);//config.SSID = "\"" + scan.SSID + "\"";config.preSharedKey = null;config.wepKeys[0] = "\"" + "\"";config.wepTxKeyIndex = 0;config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE);config.allowedProtocols.set(WifiConfiguration.Protocol.RSN);config.allowedProtocols.set(WifiConfiguration.Protocol.WPA);config.allowedAuthAlgorithms.clear();config.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.CCMP);config.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.TKIP);config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP40);config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP104);config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.CCMP);config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.TKIP);}return config;</span>

        我仔细对比一下了两者代码间的区别，只不是资料里面的config信息比较全而已，其实也没什么区别。

        后来我想了想，是不是Wifi SSID的问题，在项目里面处理SSID是需要将SSID前面和后面的“\”都要去掉，那么scanResult的SSID是不是本身就有“\”呢？

        我测试了一下，发现也没有啊，会不会是显示的问题？于是，我直接把scanResult的SSID赋值给了config的SSID，这样确实可以正常的连接Wifi：

         <span style="font-size:14px;">public WifiConfiguration CreateWifiInfo(ScanResult scan, String Password) {WifiConfiguration config = new WifiConfiguration();config.hiddenSSID = false;config.SSID=scan.SSID;config.status = WifiConfiguration.Status.ENABLED;if (scan.capabilities.contains("WEP")) {config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE);config.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.OPEN);config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP104);//config.SSID = "\"" + scan.SSID + "\"";config.wepTxKeyIndex = 0;config.wepKeys[0] = Password;} else if (scan.capabilities.contains("PSK")) {//config.SSID = "\"" + scan.SSID + "\"";config.preSharedKey = "\"" + Password + "\"";} else if (scan.capabilities.contains("EAP")) {config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.WPA_EAP);config.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.OPEN);config.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.TKIP);config.allowedProtocols.set(WifiConfiguration.Protocol.WPA);//config.SSID = "\"" + scan.SSID + "\"";config.preSharedKey = "\"" + Password + "\"";} else {config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE);//config.SSID = "\"" + scan.SSID + "\"";config.preSharedKey = null;config.wepKeys[0] = "\"" + "\"";config.wepTxKeyIndex = 0;}return config;}</span>

        难道是SSID搞的鬼？初步判断并不是config不全的问题。

        新手菜鸟，希望大家喜欢，如果对你有帮助别忘了，别忘了点赞哦。