Android之一键连接指定wifi

这段时间在做一个项目，需求是点击一个按钮输入密码就能连接到指定的wifi，不需要带设置wifi界面去进行设置，达到简化用户操作的目的。

主要代码：

progressDialog = ProgressDialog.show(context, "请稍候", "搜索中......", true, true);new Thread() {public void run() {// 关闭数据MobileData.toggleMobileData(context, false);wifiAdmin = new WifiAdmin(context);wifiAdmin.openWifi();String myssid = wifiAdmin.getMySSID(SSID);if (myssid == null) {sendMsg(1);} else {mySSID = wifiAdmin.getMySSID(SSID);sendMsg(2);}}}.start();

Handler

private Handler handler = new Handler() {@Overridepublic void handleMessage(Message msg) {// TODO Auto-generated method stubsuper.handleMessage(msg);switch (msg.what) {case 1:progressDialog.dismiss() ;// 确定已经打开指定wifi网络？？？？MyAlertDialog.myConfirmDialog(context, "请您确认一下您的SSID为ChinaNet-G开头的WiFi热点设备是否已经打开！！!");break;case 2:progressDialog.dismiss() ;CommuActivity.this.wifiPasswordSet(mySSID);break;}}};

sendMsg方法

public void sendMsg(int flag) {Message myMessage = new Message();myMessage.what = flag;handler.sendMessage(myMessage);}

wifiPasswordSet方法

public void wifiPasswordSet(String label) {Builder builder = new Builder(context); // 对话框构造器builder.setTitle("WiFi密码输入"); // 设置弹出的对话框标题LayoutInflater inflater = this.getLayoutInflater();final View view = inflater.inflate(R.layout.wifipassword, null, true);//TextView wifissid = (TextView) view.findViewById(R.id.wifissid);wifissid.setText("SSID:" + label);EditText wifipassword = (EditText) view.findViewById(R.id.wifipasswordtext);System.out.println("password==="+wifipassword.getText().toString());builder.setView(view).setPositiveButton("连接", new DialogInterface.OnClickListener() {// 确认按钮的监听器public void onClick(DialogInterface dialog, int which) {EditText wifipassword = (EditText) view.findViewById(R.id.wifipasswordtext);password = wifipassword.getText().toString();if (password == null || "".equals(password)) { // 密码为空时//密码输入为空处理部分} else {WifiConfiguration wcg = wifiAdmin.CreateWifiInfo(SSID, password, 3);boolean issuccess = wifiAdmin.addNetwork(wcg) ;if(issuccess){Toastclass.displayToast(context, "WiFi已经连接成功！") ;}else{Toastclass.displayToast(context, "WiFi连接失败，请检查密码输入是否正确！") ;}//while (!wifiAdmin.addNetwork(wcg)) {//try {//Thread.sleep(100);//} catch (InterruptedException e) {//// TODO Auto-generated catch block//e.printStackTrace();//}//}}}}).setNegativeButton("取消", new DialogInterface.OnClickListener() {public void onClick(DialogInterface dialog, int which) {// TODO Auto-generated method stub}}).show();}

最关键的WifiAdmin类

package com.etour.freewalk.useclass;import java.util.List;import android.content.Context;import android.net.wifi.ScanResult;import android.net.wifi.WifiConfiguration;import android.net.wifi.WifiInfo;import android.net.wifi.WifiManager;import android.net.wifi.WifiManager.WifiLock;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 mWifiList;// 网络连接列表private List mWifiConfiguration;// 定义一个WifiLockWifiLock 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WIFIpublic void openWifi() {if (!mWifiManager.isWifiEnabled()) {mWifiManager.setWifiEnabled(true);}}// 关闭WIFIpublic void closeWifi() {if (mWifiManager.isWifiEnabled()) {mWifiManager.setWifiEnabled(false);}}// 检查当前WIFI状态public int checkState() {return mWifiManager.getWifiState();}// 锁定WifiLockpublic void acquireWifiLock() {mWifiLock.acquire();}// 解锁WifiLockpublic void releaseWifiLock() {// 判断时候锁定if (mWifiLock.isHeld()) {mWifiLock.acquire();}}// 创建一个WifiLockpublic void creatWifiLock() {mWifiLock = mWifiManager.createWifiLock("Test");}// 得到配置好的网络public List 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 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、levelstringBuilder.append((mWifiList.get(i)).toString());stringBuilder.append("/n");System.out.println("WifiList"+i+"->"+mWifiList.get(i).SSID);}return stringBuilder;}// 得到MAC地址public String getMacAddress() {return (mWifiInfo == null) ? "NULL" : mWifiInfo.getMacAddress();}// 得到接入点的BSSIDpublic 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IDpublic 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 boolean addNetwork(WifiConfiguration wcg) {int wcgID = mWifiManager.addNetwork(wcg);boolean b = mWifiManager.enableNetwork(wcgID, true);System.out.println("a--" + wcgID);System.out.println("b--" + b);return b;}// 断开指定ID的网络public void disconnectWifi(int netId) {mWifiManager.disableNetwork(netId);mWifiManager.disconnect();}public String getMySSID(String pSSID){while(mWifiList == null){ //如果没有扫描结果继续扫描startScan();  //开始扫描WIFI列表try {Thread.sleep(200) ; //500ms之后继续扫描} catch (InterruptedException e) {e.printStackTrace();}}lookUpScan() ; //打印出扫描结果for (int i = 0; i < mWifiList.size(); i++) {if(mWifiList.get(i).SSID.contains(pSSID)){System.out.println("我要的SSID:" + mWifiList.get(i).SSID);return mWifiList.get(i).SSID; //得到目标SSID则返回结果}}return null ;}// 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) {String mySSID = getMySSID(SSID) ;if(mySSID == null){return null ;}WifiConfiguration config = new WifiConfiguration();config.allowedAuthAlgorithms.clear();config.allowedGroupCiphers.clear();config.allowedKeyManagement.clear();config.allowedPairwiseCiphers.clear();config.allowedProtocols.clear();//config.SSID = "\"" + SSID + "\"";config.SSID = "\"" + mySSID + "\"";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 existingConfigs = mWifiManager.getConfiguredNetworks();for (WifiConfiguration existingConfig : existingConfigs) {System.out.println("WifiConfiguration--SSID:"+existingConfig.SSID+",preSharedKey:"+existingConfig.preSharedKey);System.out.println("WifiConfiguration--preSharedKey:"+existingConfig.preSharedKey);//if (existingConfig.SSID.equals("\"" + SSID + "\"")) {if (existingConfig.SSID.contains(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

完毕，代码不是很完整，有需要的朋友我们可以讨论一下

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