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wifi closeWifi(); //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 block e.printStackTrace(); Log.i(TAG, "whb end startWifiAp IllegalArgumentException"); } catch (IllegalAcces***ception e) { // TODO Auto-generated catch block e.printStackTrace(); Log.i(TAG, "whb end startWifiAp IllegalAcces***ception"); } catch (InvocationTargetException e) { // TODO Auto-generated catch block e.printStackTrace();// onNotifyWifiNotSurpport(); Log.i(TAG, "whb end startWifiAp onNotifyWifiNotSurpport"); } catch (SecurityException e) { // TODO Auto-generated catch block e.printStackTrace(); Log.i(TAG, "whb end startWifiAp SecurityException"); } catch (NoSuchMethodException e) { // TODO Auto-generated catch block e.printStackTrace();  onNotifyWifiNotSurpport();  Log.i(TAG, "whb end startWifiAp NoSuchMethodException"); } } // 关闭WIFI public 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 block e.printStackTrace(); } catch (IllegalArgumentException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IllegalAcces***ception e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (InvocationTargetException e) { // TODO Auto-generated catch block e.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 seconds     public 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 it         if (!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 scan             mWifiManager.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 available                 synchronized (this) {                     // wait for the scan result to be available                     try {                         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_NOPASS            config.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_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_WPA            config.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(); }