wifi热点创建和自动连接

1.wifi热点的创建/*** 创建wifi热点* @param ssid 热点信息* @param passwd  密码* @author wanghongbin*/public void startWifiAp(Context context, String ssid, String passwd) {//关闭wificloseWifi();//关闭热点closeWifiAp();//激活热点invokeWifiAp(ssid, passwd);}/*** 激活wifi热点* @param ssid* @param passwd* @author wanghongbin*/private void invokeWifiAp(String ssid, String passwd) {try {Method method1 = mWifiManager.getClass().getMethod("setWifiApEnabled",WifiConfiguration.class, boolean.class);WifiConfiguration netConfig = new WifiConfiguration();netConfig.SSID = ssid;netConfig.preSharedKey =   passwd ;//启动热点boolean isSuccess = (Boolean)method1.invoke(mWifiManager, netConfig, true);Log.i(TAG, "whb end startWifiAp isSuccess="+isSuccess);} catch (IllegalArgumentException e) {// TODO Auto-generated catch blocke.printStackTrace();Log.i(TAG, "whb end startWifiAp IllegalArgumentException");} catch (IllegalAcces***ception e) {// TODO Auto-generated catch blocke.printStackTrace();Log.i(TAG, "whb end startWifiAp IllegalAcces***ception");} catch (InvocationTargetException e) {// TODO Auto-generated catch blocke.printStackTrace();
// onNotifyWifiNotSurpport();Log.i(TAG, "whb end startWifiAp onNotifyWifiNotSurpport");} catch (SecurityException e) {// TODO Auto-generated catch blocke.printStackTrace();Log.i(TAG, "whb end startWifiAp SecurityException");} catch (NoSuchMethodException e) {// TODO Auto-generated catch blocke.printStackTrace();onNotifyWifiNotSurpport();Log.i(TAG, "whb end startWifiAp NoSuchMethodException");}}// 关闭WIFIpublic void closeWifi() {if (mWifiManager.isWifiEnabled()) {mWifiManager.setWifiEnabled(false);}} //作热点之前先关闭wifi热点服务public  void closeWifiAp( ) {if (isWifiApEnabled()) {try {Method method = mWifiManager.getClass().getMethod("getWifiApConfiguration");method.setAccessible(true);WifiConfiguration config = (WifiConfiguration) method.invoke(mWifiManager);Method method2 = mWifiManager.getClass().getMethod("setWifiApEnabled", WifiConfiguration.class, boolean.class);method2.invoke(mWifiManager, config, false);} catch (NoSuchMethodException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (IllegalArgumentException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (IllegalAcces***ception e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (InvocationTargetException e) {// TODO Auto-generated catch blocke.printStackTrace();}}}2.连接热点/*** 添加一个网络节点并连接* @param ssid   wifi节点名称* @param passwd  密码* @param type  : TYPE_WEP TYPE_WPA*/public void addNetwork(Context context, String ssid, String passwd, int type) {closeWifiAp();openWifi();mConfig = createWifiInfo(ssid, passwd, type);SSID = ssid;connectToWifiWithConfiguration(mConfig);}public static final int WAIT_FOR_SCAN_RESULT = 10 * 1000; //10 secondspublic static final int WIFI_SCAN_TIMEOUT = 20 * 1000;/*** 连接指定热点* @param config* @return true : 调用函数成功，具体网络状态还得检测* @author wanghongbin  这个函数害死人阿，网上看了半天也没人说，最后是看的源代码里的WifiConnectionTest.java才明白需要等待，步步等待，步步惊心*/public boolean connectToWifiWithConfiguration(WifiConfiguration config) {String ssid = config.SSID;config.SSID = "\""+ssid+"\"";//If Wifi is not enabled, enable itif (!mWifiManager.isWifiEnabled()) {Log.v(TAG, "Wifi is not enabled, enable it");mWifiManager.setWifiEnabled(true);}List<ScanResult> netList = mWifiManager.getScanResults();if (netList == null) {Log.v(TAG, "scan results are null");// if no scan results are available, start active scanmWifiManager.startScan();boolean mScanResultIsAvailable = false;long startTime = System.currentTimeMillis();while (!mScanResultIsAvailable) {if ((System.currentTimeMillis() - startTime) > WIFI_SCAN_TIMEOUT) {return false;}// wait for the scan results to be availablesynchronized (this) {// wait for the scan result to be availabletry {this.wait(WAIT_FOR_SCAN_RESULT);} catch (InterruptedException e) {e.printStackTrace();}if ((mWifiManager.getScanResults() == null) ||(mWifiManager.getScanResults().size() <= 0)) {continue;}mScanResultIsAvailable = true;}}}netList = mWifiManager.getScanResults();for (int i = 0; i < netList.size(); i++) {ScanResult sr= netList.get(i);if (sr.SSID.equals(ssid)) {Log.v(TAG, "found " + ssid + " in the scan result list");int networkId = mWifiManager.addNetwork(config);// Connect to network by disabling others.mWifiManager.enableNetwork(networkId, true);mWifiManager.saveConfiguration();mWifiManager.reconnect();break;}}List<WifiConfiguration> netConfList = mWifiManager.getConfiguredNetworks();if (netConfList.size() <= 0) {Log.v(TAG, ssid + " is not available");return false;}return true;}public static final int TYPE_NO_PASSWD = 0x11;public static final int TYPE_WEP = 0x12;public static final int TYPE_WPA = 0x13;/*** 连接信息生成配置对象* @param SSID* @param password* @param type* @return* @author wanghongbin*/public WifiConfiguration createWifiInfo(String SSID, String password, int type) {Log.v(TAG, "whb SSID =" + SSID + "## Password =" + password + "## Type = " + type);WifiConfiguration config = new WifiConfiguration();config.SSID = SSID;       clearAll(SSID);// 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.hiddenSSID = false;config.status =  WifiConfiguration.Status.ENABLED;config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE);config.allowedProtocols.set(WifiConfiguration.Protocol.WPA);config.allowedProtocols.set(WifiConfiguration.Protocol.RSN);config.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.TKIP);config.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.CCMP);config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP40);config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP104);config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.TKIP);config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.CCMP);config.preSharedKey = null;} else if (type == TYPE_WEP) { // WIFICIPHER_WEPconfig.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 = false;config.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.OPEN);config.priority = 10000;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.allowedProtocols.set(WifiConfiguration.Protocol.RSN);config.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.CCMP);config.status = WifiConfiguration.Status.ENABLED;}return config;}3.很多之前已经连接上的WIFI，配置信息会自动保存，当你关闭---->打开WIFI时就会自动连接,但有时我们并不希望这样处理,解决方法为在打开WIFI之前将以前所保存的信息清除，代码为
if(isWifiConnect()){WifiInfo info = mWifiManager.getConnectionInfo();mWifiManager.removeNetwork(info.getNetworkId());mWifiManager.saveConfiguration();}或者/*** 移除所有同名节点* @param SSID*/private void clearAll(String SSID) {List<WifiConfiguration> existingConfigs = mWifiManager.getConfiguredNetworks();//按照networkId从大到小排序Collections.sort(existingConfigs, new ComparatorConfig());for (WifiConfiguration existingConfig : existingConfigs) {LogHelper.i(TAG,"existingConfig.SSID="+existingConfig.SSID+",netID = "+ existingConfig.networkId);if (existingConfig.SSID.equals("\""+SSID+"\"") /*&& existingConfig.preSharedKey.equals("\"" + password + "\"")*/) {mWifiManager.disableNetwork(existingConfig.networkId);mWifiManager.removeNetwork(existingConfig.networkId);}}mWifiManager.saveConfiguration();}

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