android动态配置Wifi信息
多人在开发应用的时候会代码连接Wifi的功能。
很多人认为 输入SSID和Password调用API 就可以去连接了啊，但是没有这种API，这种连接方式思路也是错的。 #####这才是正确的方法
打开到wifi连接页面，我们会发现最后一行有一个 add NewNetwork 的功能。 如果你输入已经覆盖Wifi的 SSID，加密方式，和Password。 你会发现竟然连接到这个wifi了。 代码连接wifi 用的就是这种方式。废话不说 直接上源码.
我们找到 android.net.wifi.WifiConfiguration.java 看看如何配置Wifi信息。
/**************************************SSID**********************/
/**
* The network's SSID. Can either be an ASCII string,
* which must be enclosed in double quotation marks
* (e.g., {@code "MyNetwork"}, or a string of
* hex digits,which are not enclosed in quotes
* (e.g., {@code 01a243f405}).
*/
public String SSID; //请看注释： 如果是 ASCII 码 SSID必须要 " " 包裹起来
/**************************************BSSID**********************/
/**
* When set, this network configuration entry should only be used when
* associating with the AP having the specified BSSID. The value is
* a string in the format of an Ethernet MAC address, e.g.,
* <code>XX:XX:XX:XX:XX:XX</code> where each <code>X</code> is a hex digit.
*/
public String BSSID; //但是我发现 在配置信息的时候，BSSID 是不能赋值的
/******************************************* preSharedKey*********************/
/**
* Pre-shared key for use with WPA-PSK.
* <p/>
* When the value of this key is read, the actual key is
* not returned, just a "*" if the key has a value, or the null
* string otherwise.
*/
public String preSharedKey; //这是WPA模式 加密的，密码赋值的地方
/*************************************wepKeys******************/
/**
* Up to four WEP keys. Either an ASCII string enclosed in double
* quotation marks (e.g., {@code "abcdef"} or a string
* of hex digits (e.g., {@code 0102030405}).
* <p/>
* When the value of one of these keys is read, the actual key is
* not returned, just a "*" if the key has a value, or the null
* string otherwise.
*/
public String[] wepKeys;// 这是WEP加密 密码赋值的地方，必须考虑ASCII
//***************基于属性太多 我只是把一些重要的属性列出来，其他属性 自己去看
下面开始配置wifi信息。
/**************************web 配置信息****************************/
config.SSID = "\"".concat(SSID).concat("\"");
config.status = WifiConfiguration.Status.DISABLED;
config.priority = 40;
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 (isHexWepKey(Password))
config.wepKeys[0] = Password;
else
config.wepKeys[0] = "\"".concat(Password).concat("\"");
config.wepTxKeyIndex = 0;
/***************************wpa配置信息*****************************/
config.SSID = "\"" + SSID + "\"";
config.hiddenSSID = false;
config.status = WifiConfiguration.Status.ENABLED;
config.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.OPEN);
config.allowedProtocols.set(WifiConfiguration.Protocol.WPA);
config.allowedProtocols.set(WifiConfiguration.Protocol.RSN); // For WPA2
config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.WPA_PSK);
config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.WPA_EAP);
config.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.TKIP);
config.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.CCMP);
config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.CCMP);
config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.TKIP);
config.preSharedKey = "\"" + Password + "\"";
config.priority =1;
/****************************无密码的配置***********************/
config.wepKeys[0] = "";
config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE);
config.wepTxKeyIndex = 0;
wifiManager.addNetwork(wifiConfig); //添加配置信息,返回NetworkId， 如果是-1 则配置失败
wifiManager.saveConfiguration();//保存信息
wifiManager.enableNetwork（NetWorkId,true）；//连接返回的NetWordID，并且断开其他的Wifi连接。