wifi开发——自动连接指定SSID的wifi热点（不加密加密）

最近在做一个项目，其中涉及到一块“自动连接已存在的wifi热点”的功能，在网上查阅了大量资料，五花八门，但其中一些说的很简单，即不能实现傻瓜式的拿来就用，有些说的很详细，但其中不乏些许错误造成功能无法实现，经过浣熊多方努力，终于成功将功能实现，遂将一点点小成就拿出来与大家分享。

首先需要感谢这篇文章的作者：http://blog.chinaunix.net/uid-22342564-id-3228565.html

在这篇文章中，作者定义了一个wifi工具类，其中存在着操作wifi的各种方法，其中有一些错误我以改正，正确的代码如下（创建一个名为WifiAdmin.Java的文件，以下代码中没有包声明和import，请自行添加）：

[java] view plain copy print ? public class WifiAdmin {       // 定义WifiManager对象         private WifiManager mWifiManager;       // 定义WifiInfo对象         private WifiInfo mWifiInfo;       // 扫描出的网络连接列表         private List<ScanResult> mWifiList;       // 网络连接列表         private List<WifiConfiguration> mWifiConfiguration;       // 定义一个WifiLock         WifiLock mWifiLock;            // 构造器         public WifiAdmin(Context context) {           // 取得WifiManager对象             mWifiManager = (WifiManager) context                   .getSystemService(Context.WIFI_SERVICE);           // 取得WifiInfo对象             mWifiInfo = mWifiManager.getConnectionInfo();       }          // 打开WIFI         public void openWifi() {           if (!mWifiManager.isWifiEnabled()) {               mWifiManager.setWifiEnabled(true);           }       }          // 关闭WIFI         public void closeWifi() {           if (mWifiManager.isWifiEnabled()) {               mWifiManager.setWifiEnabled(false);           }       }          // 检查当前WIFI状态         public int checkState() {           return mWifiManager.getWifiState();       }          // 锁定WifiLock         public void acquireWifiLock() {           mWifiLock.acquire();       }          // 解锁WifiLock         public void releaseWifiLock() {           // 判断时候锁定             if (mWifiLock.isHeld()) {               mWifiLock.acquire();           }       }          // 创建一个WifiLock         public void creatWifiLock() {           mWifiLock = mWifiManager.createWifiLock("Test");       }          // 得到配置好的网络         public List<WifiConfiguration> getConfiguration() {           return mWifiConfiguration;       }          // 指定配置好的网络进行连接         public void connectConfiguration(int index) {           // 索引大于配置好的网络索引返回             if (index > mWifiConfiguration.size()) {               return;           }           // 连接配置好的指定ID的网络             mWifiManager.enableNetwork(mWifiConfiguration.get(index).networkId,                   true);       }          public void startScan() {           mWifiManager.startScan();           // 得到扫描结果             mWifiList = mWifiManager.getScanResults();           // 得到配置好的网络连接             mWifiConfiguration = mWifiManager.getConfiguredNetworks();       }          // 得到网络列表         public List<ScanResult> getWifiList() {           return mWifiList;       }          // 查看扫描结果         public StringBuilder lookUpScan() {           StringBuilder stringBuilder = new StringBuilder();           for (int i = 0; i < mWifiList.size(); i++) {               stringBuilder                       .append("Index_" + new Integer(i + 1).toString() + ":");               // 将ScanResult信息转换成一个字符串包                 // 其中把包括：BSSID、SSID、capabilities、frequency、level                 stringBuilder.append((mWifiList.get(i)).toString());               stringBuilder.append("/n");           }           return stringBuilder;       }         // 得到MAC地址         public String getMacAddress() {           return (mWifiInfo == null) ? "NULL" : mWifiInfo.getMacAddress();       }          // 得到接入点的BSSID         public String getBSSID() {           return (mWifiInfo == null) ? "NULL" : mWifiInfo.getBSSID();       }          // 得到IP地址         public int getIPAddress() {           return (mWifiInfo == null) ? 0 : mWifiInfo.getIpAddress();       }          // 得到连接的ID         public int getNetworkId() {           return (mWifiInfo == null) ? 0 : mWifiInfo.getNetworkId();       }          // 得到WifiInfo的所有信息包         public String getWifiInfo() {           return (mWifiInfo == null) ? "NULL" : mWifiInfo.toString();       }          // 添加一个网络并连接         public void addNetwork(WifiConfiguration wcg) {        int wcgID = mWifiManager.addNetwork(wcg);        boolean b =  mWifiManager.enableNetwork(wcgID, true);        System.out.println("a--" + wcgID);       System.out.println("b--" + b);      }          // 断开指定ID的网络         public void disconnectWifi(int netId) {           mWifiManager.disableNetwork(netId);           mWifiManager.disconnect();       }      //然后是一个实际应用方法，只验证过没有密码的情况：          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) {                  mWifiManager.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;       }             private WifiConfiguration IsExsits(String SSID)        {            List<WifiConfiguration> existingConfigs = mWifiManager.getConfiguredNetworks();               for (WifiConfiguration existingConfig : existingConfigs)                {                 if (existingConfig.SSID.equals("\""+SSID+"\""))                 {                     return existingConfig;                 }               }            return null;         }      }  //分为三种情况：1没有密码2用wep加密3用wpa加密   [java] view plain copy print ? public class WifiAdmin {       // 定义WifiManager对象        private WifiManager mWifiManager;       // 定义WifiInfo对象        private WifiInfo mWifiInfo;       // 扫描出的网络连接列表        private List<ScanResult> mWifiList;       // 网络连接列表        private List<WifiConfiguration> mWifiConfiguration;       // 定义一个WifiLock        WifiLock mWifiLock;            // 构造器        public WifiAdmin(Context context) {           // 取得WifiManager对象            mWifiManager = (WifiManager) context                   .getSystemService(Context.WIFI_SERVICE);           // 取得WifiInfo对象            mWifiInfo = mWifiManager.getConnectionInfo();       }          // 打开WIFI        public void openWifi() {           if (!mWifiManager.isWifiEnabled()) {               mWifiManager.setWifiEnabled(true);           }       }          // 关闭WIFI        public void closeWifi() {           if (mWifiManager.isWifiEnabled()) {               mWifiManager.setWifiEnabled(false);           }       }          // 检查当前WIFI状态        public int checkState() {           return mWifiManager.getWifiState();       }          // 锁定WifiLock        public void acquireWifiLock() {           mWifiLock.acquire();       }          // 解锁WifiLock        public void releaseWifiLock() {           // 判断时候锁定            if (mWifiLock.isHeld()) {               mWifiLock.acquire();           }       }          // 创建一个WifiLock        public void creatWifiLock() {           mWifiLock = mWifiManager.createWifiLock("Test");       }          // 得到配置好的网络        public List<WifiConfiguration> getConfiguration() {           return mWifiConfiguration;       }          // 指定配置好的网络进行连接        public void connectConfiguration(int index) {           // 索引大于配置好的网络索引返回            if (index > mWifiConfiguration.size()) {               return;           }           // 连接配置好的指定ID的网络            mWifiManager.enableNetwork(mWifiConfiguration.get(index).networkId,                   true);       }          public void startScan() {           mWifiManager.startScan();           // 得到扫描结果            mWifiList = mWifiManager.getScanResults();           // 得到配置好的网络连接            mWifiConfiguration = mWifiManager.getConfiguredNetworks();       }          // 得到网络列表        public List<ScanResult> getWifiList() {           return mWifiList;       }          // 查看扫描结果        public StringBuilder lookUpScan() {           StringBuilder stringBuilder = new StringBuilder();           for (int i = 0; i < mWifiList.size(); i++) {               stringBuilder                       .append("Index_" + new Integer(i + 1).toString() + ":");               // 将ScanResult信息转换成一个字符串包                // 其中把包括：BSSID、SSID、capabilities、frequency、level                stringBuilder.append((mWifiList.get(i)).toString());               stringBuilder.append("/n");           }           return stringBuilder;       }         // 得到MAC地址        public String getMacAddress() {           return (mWifiInfo == null) ? "NULL" : mWifiInfo.getMacAddress();       }          // 得到接入点的BSSID        public String getBSSID() {           return (mWifiInfo == null) ? "NULL" : mWifiInfo.getBSSID();       }          // 得到IP地址        public int getIPAddress() {           return (mWifiInfo == null) ? 0 : mWifiInfo.getIpAddress();       }          // 得到连接的ID        public int getNetworkId() {           return (mWifiInfo == null) ? 0 : mWifiInfo.getNetworkId();       }          // 得到WifiInfo的所有信息包        public String getWifiInfo() {           return (mWifiInfo == null) ? "NULL" : mWifiInfo.toString();       }          // 添加一个网络并连接        public void addNetwork(WifiConfiguration wcg) {        int wcgID = mWifiManager.addNetwork(wcg);        boolean b =  mWifiManager.enableNetwork(wcgID, true);        System.out.println("a--" + wcgID);       System.out.println("b--" + b);      }          // 断开指定ID的网络        public void disconnectWifi(int netId) {           mWifiManager.disableNetwork(netId);           mWifiManager.disconnect();       }      //然后是一个实际应用方法，只验证过没有密码的情况：         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) {                  mWifiManager.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;       }             private WifiConfiguration IsExsits(String SSID)        {            List<WifiConfiguration> existingConfigs = mWifiManager.getConfiguredNetworks();               for (WifiConfiguration existingConfig : existingConfigs)                {                 if (existingConfig.SSID.equals("\""+SSID+"\""))                 {                     return existingConfig;                 }               }            return null;         }      }  //分为三种情况：1没有密码2用wep加密3用wpa加密   public class WifiAdmin { // 定义WifiManager对象 private WifiManager mWifiManager; // 定义WifiInfo对象 private WifiInfo mWifiInfo; // 扫描出的网络连接列表 private List<ScanResult> mWifiList; // 网络连接列表 private List<WifiConfiguration> mWifiConfiguration; // 定义一个WifiLock WifiLock mWifiLock; // 构造器 public WifiAdmin(Context context) { // 取得WifiManager对象 mWifiManager = (WifiManager) context .getSystemService(Context.WIFI_SERVICE); // 取得WifiInfo对象 mWifiInfo = mWifiManager.getConnectionInfo(); } // 打开WIFI public void openWifi() { if (!mWifiManager.isWifiEnabled()) { mWifiManager.setWifiEnabled(true); } } // 关闭WIFI public void closeWifi() { if (mWifiManager.isWifiEnabled()) { mWifiManager.setWifiEnabled(false); } } // 检查当前WIFI状态 public int checkState() { return mWifiManager.getWifiState(); } // 锁定WifiLock public void acquireWifiLock() { mWifiLock.acquire(); } // 解锁WifiLock public void releaseWifiLock() { // 判断时候锁定 if (mWifiLock.isHeld()) { mWifiLock.acquire(); } } // 创建一个WifiLock public void creatWifiLock() { mWifiLock = mWifiManager.createWifiLock("Test"); } // 得到配置好的网络 public List<WifiConfiguration> getConfiguration() { return mWifiConfiguration; } // 指定配置好的网络进行连接 public void connectConfiguration(int index) { // 索引大于配置好的网络索引返回 if (index > mWifiConfiguration.size()) { return; } // 连接配置好的指定ID的网络 mWifiManager.enableNetwork(mWifiConfiguration.get(index).networkId, true); } public void startScan() { mWifiManager.startScan(); // 得到扫描结果 mWifiList = mWifiManager.getScanResults(); // 得到配置好的网络连接 mWifiConfiguration = mWifiManager.getConfiguredNetworks(); } // 得到网络列表 public List<ScanResult> getWifiList() { return mWifiList; } // 查看扫描结果 public StringBuilder lookUpScan() { StringBuilder stringBuilder = new StringBuilder(); for (int i = 0; i < mWifiList.size(); i++) { stringBuilder .append("Index_" + new Integer(i + 1).toString() + ":"); // 将ScanResult信息转换成一个字符串包 // 其中把包括：BSSID、SSID、capabilities、frequency、level stringBuilder.append((mWifiList.get(i)).toString()); stringBuilder.append("/n"); } return stringBuilder; } // 得到MAC地址 public String getMacAddress() { return (mWifiInfo == null) ? "NULL" : mWifiInfo.getMacAddress(); } // 得到接入点的BSSID public String getBSSID() { return (mWifiInfo == null) ? "NULL" : mWifiInfo.getBSSID(); } // 得到IP地址 public int getIPAddress() { return (mWifiInfo == null) ? 0 : mWifiInfo.getIpAddress(); } // 得到连接的ID public int getNetworkId() { return (mWifiInfo == null) ? 0 : mWifiInfo.getNetworkId(); } // 得到WifiInfo的所有信息包 public String getWifiInfo() { return (mWifiInfo == null) ? "NULL" : mWifiInfo.toString(); } // 添加一个网络并连接 public void addNetwork(WifiConfiguration wcg) { int wcgID = mWifiManager.addNetwork(wcg); boolean b = mWifiManager.enableNetwork(wcgID, true); System.out.println("a--" + wcgID); System.out.println("b--" + b); } // 断开指定ID的网络 public void disconnectWifi(int netId) { mWifiManager.disableNetwork(netId); mWifiManager.disconnect(); } //然后是一个实际应用方法，只验证过没有密码的情况： 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) { mWifiManager.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; } private WifiConfiguration IsExsits(String SSID) { List<WifiConfiguration> existingConfigs = mWifiManager.getConfiguredNetworks(); for (WifiConfiguration existingConfig : existingConfigs) { if (existingConfig.SSID.equals("\""+SSID+"\"")) { return existingConfig; } } return null; } } //分为三种情况：1没有密码2用wep加密3用wpa加密

改动主要集中在CreateWifiInfo这个方法中，并且添加了一个私有方法：

（1）将与方法的第三个参数有关的变量都改成int型，或者使用原作者的枚举型（存在bug需要改正），但枚举会在后续的开发中遇到些困难；

（2）在if(type == 3)中注释掉“config.allowedProtocols.set(WifiConfiguration.Protocol.WPA);”，并添加“

config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.CCMP); config.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.CCMP);“这两句，否则当wifi热点需要输入密码时，无法加入网络。

（3）在代码末尾添加了方法IsExsits，原因在于如果按照网上介绍的方法成功加入指定的wifi后，都会在终端的wifi列表中新添加一个以该指定ssid的网络，所以每运行一次程序，列表中就会多一个相同名字的ssid。而该方法就是检查wifi列表中是否有以输入参数为名的wifi热点，如果存在，则在CreateWifiInfo方法开始配置wifi网络之前将其移除，以避免ssid的重复：

WifiConfiguration tempConfig = this.IsExsits(SSID);           

          if(tempConfig != null) {  

          mWifiManager.removeNetwork(tempConfig.networkId);  

          }

以上便是wifi工具类的建立，之后就可以在其他部分实例化这个类，调用其中的方法完成加入指定ssid的wifi热点，还是先上代码吧，建立一个名为Test_wifiActivity.java的文件（同上，没有包含包声明和import语句）：

[java] view plain copy print ? public class Test_wifiActivity extends Activity {      /** Called when the activity is first created. */      @Override      public void onCreate(Bundle savedInstanceState) {          super.onCreate(savedInstanceState);          setContentView(R.layout.main);                    WifiAdmin wifiAdmin = new WifiAdmin(this);          wifiAdmin.openWifi();          wifiAdmin.addNetwork(wifiAdmin.CreateWifiInfo("XXX", "XXX", 3));      }  }   [java] view plain copy print ? public class Test_wifiActivity extends Activity {      /** Called when the activity is first created. */      @Override      public void onCreate(Bundle savedInstanceState) {          super.onCreate(savedInstanceState);          setContentView(R.layout.main);                    WifiAdmin wifiAdmin = new WifiAdmin(this);          wifiAdmin.openWifi();          wifiAdmin.addNetwork(wifiAdmin.CreateWifiInfo("XXX", "XXX", 3));      }  }   public class Test_wifiActivity extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); WifiAdmin wifiAdmin = new WifiAdmin(this); wifiAdmin.openWifi(); wifiAdmin.addNetwork(wifiAdmin.CreateWifiInfo("XXX", "XXX", 3)); } } 很简单，如果是接入wifi，大体上只涉及到openWifi(打开wifi)、CreateWifiInfo(配置wifi网络信息)和addNetwork（添加配置好的网络并连接），对CreateWifiInfo进行简单的说明：第一参数是SSID的名称；第二个参数是指定SSID网络的密码，当不需要密码是置空（”“）；第三个参数是热点类型：1-无密码 / 2-WEP密码验证（未测试）/ 3-WAP或WAP2 PSK密码验证。

最后就是在Manifest中添加相应的权限了：

[java] view plain copy print ? <uses-permission android:name="android.permission.CHANGE_NETWORK_STATE" ></uses-permission>      <uses-permission android:name="android.permission.CHANGE_WIFI_STATE" ></uses-permission>      <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" ></uses-permission>      <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" ></uses-permission>   [java] view plain copy print ? <uses-permission android:name="android.permission.CHANGE_NETWORK_STATE" ></uses-permission>      <uses-permission android:name="android.permission.CHANGE_WIFI_STATE" ></uses-permission>      <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" ></uses-permission>      <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" ></uses-permission>   <uses-permission android:name="android.permission.CHANGE_NETWORK_STATE" ></uses-permission> <uses-permission android:name="android.permission.CHANGE_WIFI_STATE" ></uses-permission> <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" ></uses-permission> <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" ></uses-permission> 如果按照上述的方法进行开发，就可以很傻瓜的通过改变Test_wifiActivity.java中的CreateWifiInfo方法的三个入口参数实现加入指定SSID的wifi热点了，无论该热点是否需要密码认证。

以上就是我对于自动连接指定SSID的wifi热点的学习心得，由于水平有限有些地方可能介绍错误，希望大家多多批评指正！