实现自动WiFi连接

1，想实现连接到指定的WiFi网络吗？

其实这个不是很难，可这个一直困扰了我很长时间，今天终于找到了原因，因为，我之前的配置就是错误的，所以，导致无法连接到指定的无线网络。

2，实现方法：

请参考以下的代码（特别是有密码与没有密码的部分，他们的配置都不尽相同，所以，一定得细心）：

         WifiConfiguration config = new WifiConfiguration();    
         config.allowedAuthAlgorithms.clear();  
         config.allowedGroupCiphers.clear();  
         config.allowedKeyManagement.clear();  
         config.allowedPairwiseCiphers.clear();  
         config.allowedProtocols.clear();  
         config.SSID = "\"" + SSID + "\"";    
        if(Type == NOPASS)  
        {  
             config.wepKeys[0] = "";  
             config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE);  
             config.wepTxKeyIndex = 0;  
        }  
        if(Type == WEP)  
        {  
            config.preSharedKey = "\""+Password+"\"";   
            config.hiddenSSID = true;    
            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 == 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.status = WifiConfiguration.Status.ENABLED;    
        }  

3，下面是实现的具体关键代码（仅用了没有密码的实现方式，其他的可以自己去实现）：

		List<ScanResult> sRet = mWifi.getScanResults();
            	for (int i=0; i<sRet.size(); i++)
            	{
                	ScanResult retS = sRet.get(i); 
                	txt.append("resT: " + retS.SSID +" " + retS.BSSID + "\n");
                	Log.d(tag, "resT: " + retS.SSID +" " + retS.BSSID);
                	
                	if (retS.SSID.equalsIgnoreCase("Shuttled"))
                	{
                    	        txt.append("Found: " + retS.SSID +" " + retS.BSSID + "\n");
               		
                		WifiConfiguration wc = new WifiConfiguration();
                		wc.allowedAuthAlgorithms.clear();
                		wc.allowedGroupCiphers.clear();
                		wc.allowedKeyManagement.clear();
                		wc.allowedProtocols.clear();
                		wc.allowedPairwiseCiphers.clear();
                		
                		wc.SSID = "\""+retS.SSID+"\"";
                		wc.wepKeys[0]="";
				wc.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE);
				wc.wepTxKeyIndex = 0;

				int netID = mWifi.addNetwork(wc); // add network
//                		txt.append("addNetwork: "+ Integer.toString(netID) +"\n");
//                		mWifi.saveConfiguration();
                		if(mWifi.enableNetwork(netID, true)) // enable network
                		{
                			txt.append("enableNetwork: true\n");
                		}

4，在StackOverflow上，有位高人，让通过广播来实现（通知扫描完成事件），下面是实现代码：

	private BroadcastReceiver scanResultsReceiver = new BroadcastReceiver(){
		@Override
		public void onReceive(Context arg0, Intent intent) {
			String action = intent.getAction();

			if (action.equals("android.net.wifi.SCAN_RESULTS"))
			{
                               do connect?????
                        }
       }

        /* 注册事件时，需要添加行为 */
  IntentFilter intentFilter = new IntentFilter();
  intentFilter.addAction("android.net.wifi.SCAN_RESULTS");
 registerReceiver(scanResultsReceiver, intentFilter);

5，完成，将近快10月了，才知道怎么去弄，也许是关注度不够吧。唉~~~，加油。。。