Android 连接Wifi和创建Wifi热点 demo

android的热点功能不可见，用了反射的技术搞定之外。

Eclipse设置语言为utf-8才能查看中文注释

上代码：

MainActivity.java

package com.widget.hotspot;import android.os.Bundle;import android.app.Activity;import android.content.BroadcastReceiver;import android.content.Context;import android.content.Intent;import android.content.IntentFilter;import android.util.Log;import android.view.Menu;import android.view.View;import android.widget.Button;public class MainActivity extends Activity {public static final String TAG = "MainActivity";private Button mBtn1, mBtn2;private WifiAdmin mWifiAdmin;private Context mContext = null;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);mContext = this;setContentView(R.layout.activity_main);mBtn1 = (Button)findViewById(R.id.button1);mBtn2 = (Button)findViewById(R.id.button2);mBtn1.setText("点击连接Wifi");mBtn2.setText("点击创建Wifi热点");mBtn1.setOnClickListener(new Button.OnClickListener() {@Overridepublic void onClick(View v) {// TODO Auto-generated method stubmWifiAdmin = new WifiAdmin(mContext) {@Overridepublic void myUnregisterReceiver(BroadcastReceiver receiver) {// TODO Auto-generated method stubMainActivity.this.unregisterReceiver(receiver);}@Overridepublic Intent myRegisterReceiver(BroadcastReceiver receiver,IntentFilter filter) {// TODO Auto-generated method stubMainActivity.this.registerReceiver(receiver, filter);return null;}@Overridepublic void onNotifyWifiConnected() {// TODO Auto-generated method stubLog.v(TAG, "have connected success!");Log.v(TAG, "###############################");}@Overridepublic void onNotifyWifiConnectFailed() {// TODO Auto-generated method stubLog.v(TAG, "have connected failed!");Log.v(TAG, "###############################");}};mWifiAdmin.openWifi();mWifiAdmin.addNetwork(mWifiAdmin.createWifiInfo("YOU_WIFI", "MM123456", WifiAdmin.TYPE_WPA));}});mBtn2.setOnClickListener(new Button.OnClickListener() {@Overridepublic void onClick(View v) {// TODO Auto-generated method stubWifiApAdmin wifiAp = new WifiApAdmin(mContext);wifiAp.startWifiAp("\"HotSpot\"", "hhhhhh123");}});}@Overridepublic boolean onCreateOptionsMenu(Menu menu) {// Inflate the menu; this adds items to the action bar if it is present.getMenuInflater().inflate(R.menu.activity_main, menu);return true;} @Override    public void onResume() {        super.onResume();                Log.d("Rssi", "Registered");    }    @Override    public void onPause() {        super.onPause();                Log.d("Rssi", "Unregistered");    }}

WifiAdmin.java

参考了：//http://blog.csdn.net/yuanbohx/article/details/8109042

package com.widget.hotspot;import java.util.List;import java.util.Timer;import java.util.TimerTask;import android.content.BroadcastReceiver;import android.content.Context;import android.content.Intent;import android.content.IntentFilter;import android.net.ConnectivityManager;import android.net.NetworkInfo;import android.net.NetworkInfo.DetailedState;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;import android.util.Log;public abstract class WifiAdmin {private static final String TAG = "WifiAdmin";private WifiManager mWifiManager;private WifiInfo mWifiInfo;// 扫描出的网络连接列表private List<ScanResult> mWifiList;private List<WifiConfiguration> mWifiConfiguration;private WifiLock mWifiLock;private String mPasswd = "";private String mSSID = "";private Context mContext = null;public WifiAdmin(Context context) {mContext = context;// 取得WifiManager对象mWifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);// 取得WifiInfo对象mWifiInfo = mWifiManager.getConnectionInfo();Log.v(TAG, "getIpAddress = " + mWifiInfo.getIpAddress());}// 打开WIFIpublic void openWifi() {if (!mWifiManager.isWifiEnabled()) {mWifiManager.setWifiEnabled(true);}}// 关闭WIFIpublic void closeWifi() {if (mWifiManager.isWifiEnabled()) {mWifiManager.setWifiEnabled(false);}}    public abstract Intent myRegisterReceiver(BroadcastReceiver receiver, IntentFilter filter);        public abstract void myUnregisterReceiver(BroadcastReceiver receiver);        public abstract void onNotifyWifiConnected();        public abstract void onNotifyWifiConnectFailed();// 添加一个网络并连接public void addNetwork(WifiConfiguration wcg) {register();WifiApAdmin.closeWifiAp(mContext);int wcgID = mWifiManager.addNetwork(wcg);boolean b = mWifiManager.enableNetwork(wcgID, true);}public static final int TYPE_NO_PASSWD = 0x11;public static final int TYPE_WEP = 0x12;public static final int TYPE_WPA = 0x13;public void addNetwork(String ssid, String passwd, int type) {if (ssid == null || passwd == null || ssid.equals("")) {Log.e(TAG, "addNetwork() ## nullpointer error!");return;}if (type != TYPE_NO_PASSWD && type != TYPE_WEP && type != TYPE_WPA) {Log.e(TAG, "addNetwork() ## unknown type = " + type);}stopTimer();unRegister();addNetwork(createWifiInfo(ssid, passwd, type));}private BroadcastReceiver mBroadcastReceiver = new BroadcastReceiver() {@Overridepublic void onReceive(Context context, Intent intent) {// TODO Auto-generated method stubif (intent.getAction().equals(WifiManager.RSSI_CHANGED_ACTION)) {Log.d(TAG, "RSSI changed");//有可能是正在获取，或者已经获取了Log.d(TAG, " intent is " + WifiManager.RSSI_CHANGED_ACTION);if (isWifiContected(mContext) == WIFI_CONNECTED) {stopTimer();onNotifyWifiConnected();unRegister();} else if (isWifiContected(mContext) == WIFI_CONNECT_FAILED) {stopTimer();closeWifi();onNotifyWifiConnectFailed();unRegister();} else if (isWifiContected(mContext) == WIFI_CONNECTING) {}}}};private final int STATE_REGISTRING = 0x01;private final int STATE_REGISTERED = 0x02;private final int STATE_UNREGISTERING = 0x03;private final int STATE_UNREGISTERED = 0x04;private int mHaveRegister = STATE_UNREGISTERED;private synchronized void register() {Log.v(TAG, "register() ##mHaveRegister = " + mHaveRegister);if (mHaveRegister == STATE_REGISTRING || mHaveRegister == STATE_REGISTERED) {return ;}mHaveRegister = STATE_REGISTRING;myRegisterReceiver(mBroadcastReceiver, new IntentFilter(WifiManager.RSSI_CHANGED_ACTION));mHaveRegister = STATE_REGISTERED;startTimer();}private synchronized void unRegister() {Log.v(TAG, "unRegister() ##mHaveRegister = " + mHaveRegister);if (mHaveRegister == STATE_UNREGISTERED || mHaveRegister == STATE_UNREGISTERING) {return ;}mHaveRegister = STATE_UNREGISTERING;myUnregisterReceiver(mBroadcastReceiver);mHaveRegister = STATE_UNREGISTERED;}private Timer mTimer = null;private void startTimer() {if (mTimer != null) {stopTimer();}mTimer = new Timer(true);//mTimer.schedule(mTimerTask, 0, 20 * 1000);// 20smTimer.schedule(mTimerTask, 30 * 1000);}private TimerTask mTimerTask = new TimerTask() {@Overridepublic void run() {// TODO Auto-generated method stubLog.e(TAG, "timer out!");onNotifyWifiConnectFailed();unRegister();}};private void stopTimer() {if (mTimer != null) {mTimer.cancel();mTimer = null;}}@Overrideprotected void finalize() {try {super.finalize();unRegister();} catch (Throwable e) {// TODO Auto-generated catch blocke.printStackTrace();}}public WifiConfiguration createWifiInfo(String SSID, String password, int type) {Log.v(TAG, "SSID = " + SSID + "## Password = " + password + "## Type = " + 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);}// 分为三种情况：1没有密码2用wep加密3用wpa加密if (type == TYPE_NO_PASSWD) {// WIFICIPHER_NOPASSconfig.wepKeys[0] = "";config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE);config.wepTxKeyIndex = 0;} else if (type == TYPE_WEP) {  //  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;} else if (type == TYPE_WPA) {   // WIFICIPHER_WPAconfig.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;}public static final int WIFI_CONNECTED = 0x01;public static final int WIFI_CONNECT_FAILED = 0x02;public static final int WIFI_CONNECTING = 0x03;/** * 判断wifi是否连接成功,不是network *  * @param context * @return */public int isWifiContected(Context context) {ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);NetworkInfo wifiNetworkInfo = connectivityManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI);Log.v(TAG, "isConnectedOrConnecting = " + wifiNetworkInfo.isConnectedOrConnecting());Log.d(TAG, "wifiNetworkInfo.getDetailedState() = " + wifiNetworkInfo.getDetailedState());if (wifiNetworkInfo.getDetailedState() == DetailedState.OBTAINING_IPADDR|| wifiNetworkInfo.getDetailedState() == DetailedState.CONNECTING) {return WIFI_CONNECTING;} else if (wifiNetworkInfo.getDetailedState() == DetailedState.CONNECTED) {return WIFI_CONNECTED;} else {Log.d(TAG, "getDetailedState() == " + wifiNetworkInfo.getDetailedState());return WIFI_CONNECT_FAILED;}}private WifiConfiguration IsExsits(String SSID) {List<WifiConfiguration> existingConfigs = mWifiManager.getConfiguredNetworks();for (WifiConfiguration existingConfig : existingConfigs) {if (existingConfig.SSID.equals("\"" + SSID + "\"") /*&& existingConfig.preSharedKey.equals("\"" + password + "\"")*/) {return existingConfig;}}return null;}// 断开指定ID的网络public void disconnectWifi(int netId) {mWifiManager.disableNetwork(netId);mWifiManager.disconnect();}// 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<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();mWifiList = mWifiManager.getScanResults();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、levelstringBuilder.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();}}

WifiApAdmin.java

参考了 http://blog.csdn.net/cxlmax/article/details/7827102

package com.widget.hotspot;import java.lang.reflect.InvocationTargetException;import java.lang.reflect.Method;import java.util.Timer;import java.util.TimerTask;import android.content.Context;import android.net.wifi.WifiConfiguration;import android.net.wifi.WifiManager;import android.util.Log;/** * 创建热点 * */public class WifiApAdmin {public static final String TAG = "WifiApAdmin";public static void closeWifiAp(Context context) {WifiManager wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE); closeWifiAp(wifiManager);}private WifiManager mWifiManager = null;private Context mContext = null;public WifiApAdmin(Context context) {mContext = context;mWifiManager = (WifiManager) mContext.getSystemService(Context.WIFI_SERVICE);  closeWifiAp(mWifiManager);}private String mSSID = "";private String mPasswd = "";public void startWifiAp(String ssid, String passwd) {mSSID = ssid;mPasswd = passwd;if (mWifiManager.isWifiEnabled()) {mWifiManager.setWifiEnabled(false);} stratWifiAp();MyTimerCheck timerCheck = new MyTimerCheck() {@Overridepublic void doTimerCheckWork() {// TODO Auto-generated method stubif (isWifiApEnabled(mWifiManager)) {Log.v(TAG, "Wifi enabled success!");this.exit();} else {Log.v(TAG, "Wifi enabled failed!");}}@Overridepublic void doTimeOutWork() {// TODO Auto-generated method stubthis.exit();}};timerCheck.start(15, 1000);}public void stratWifiAp() {Method method1 = null;try {method1 = mWifiManager.getClass().getMethod("setWifiApEnabled",WifiConfiguration.class, boolean.class);WifiConfiguration netConfig = new WifiConfiguration();netConfig.SSID = mSSID;netConfig.preSharedKey = mPasswd;netConfig.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.OPEN);netConfig.allowedProtocols.set(WifiConfiguration.Protocol.RSN);netConfig.allowedProtocols.set(WifiConfiguration.Protocol.WPA);netConfig.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.WPA_PSK);netConfig.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.CCMP);netConfig.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.TKIP);netConfig.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.CCMP);netConfig.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.TKIP);method1.invoke(mWifiManager, netConfig, true);} catch (IllegalArgumentException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (IllegalAccessException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (InvocationTargetException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (SecurityException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (NoSuchMethodException e) {// TODO Auto-generated catch blocke.printStackTrace();}}private static void closeWifiAp(WifiManager wifiManager) {if (isWifiApEnabled(wifiManager)) {try {Method method = wifiManager.getClass().getMethod("getWifiApConfiguration");method.setAccessible(true);WifiConfiguration config = (WifiConfiguration) method.invoke(wifiManager);Method method2 = wifiManager.getClass().getMethod("setWifiApEnabled", WifiConfiguration.class, boolean.class);method2.invoke(wifiManager, config, false);} catch (NoSuchMethodException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (IllegalArgumentException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (IllegalAccessException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (InvocationTargetException e) {// TODO Auto-generated catch blocke.printStackTrace();}}}private static boolean isWifiApEnabled(WifiManager wifiManager) {try {Method method = wifiManager.getClass().getMethod("isWifiApEnabled");method.setAccessible(true);return (Boolean) method.invoke(wifiManager);} catch (NoSuchMethodException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (Exception e) {e.printStackTrace();}return false;}}

MyTimeCheck.java

package com.widget.hotspot;public abstract class MyTimerCheck {private int mCount = 0;private int mTimeOutCount = 1;private int mSleepTime = 1000; // 1sprivate boolean mExitFlag = false;private Thread mThread = null;/** * Do not process UI work in this. */public abstract void doTimerCheckWork();public abstract void doTimeOutWork();public MyTimerCheck() {mThread = new Thread(new Runnable() {@Overridepublic void run() {// TODO Auto-generated method stubwhile (!mExitFlag) {mCount++;if (mCount < mTimeOutCount) {doTimerCheckWork();try {mThread.sleep(mSleepTime);} catch (InterruptedException e) {// TODO Auto-generated catch blocke.printStackTrace();exit();}} else {doTimeOutWork();}}}});}/** * start * @param times  How many times will check? * @param sleepTime ms, Every check sleep time. */public void start(int timeOutCount, int sleepTime) {mTimeOutCount = timeOutCount;mSleepTime = sleepTime;mThread.start();}public void exit() {mExitFlag = true;}}

xml布局简单不上了，

效果自己试试看打印就知道了