在android应用程序中可以很方便的使用wifi来处理不同的应用需求，灵活而方面的方法提供给开发者，这里定义了一些常用的wifi处理函数，参考android应用开发解密第八章内容
public class WifiAdmin { private String tag = "WifiAdmin"; private WifiManager wifiManager; private WifiInfo wifiInfo; private List<ScanResult> wifiList; private List<WifiConfiguration> wifiConfiguration; WifiLock wifiLock; public WifiAdmin(Context context) { wifiManager = (WifiManager) context .getSystemService(Context.WIFI_SERVICE); wifiInfo = wifiManager.getConnectionInfo(); } //连接wifi ssid public void connected(){ for(WifiConfiguration config:getConfiguration()){ String ssid = config.SSID.replace("\"", ""); if(config.status!=1){ Log.i(tag, "ssid--------->"+ssid); if(ssid.startsWith("OPLK")){ this.connectConfiguration(config.networkId); while (getWifiState() == WifiManager.WIFI_STATE_ENABLING) { try { Thread.currentThread(); Thread.sleep(100); } catch (InterruptedException ie) { } } break; } } } } public int getWifiState(){ return wifiManager.getWifiState(); } //打开wifi public void openWifi() { if (!wifiManager.isWifiEnabled()) { wifiManager.setWifiEnabled(true); } } //关闭wifi public void closeWifi() { if (!wifiManager.isWifiEnabled()) { wifiManager.setWifiEnabled(false); } } //允许一直使用wifi public void acquireWifiLock() { wifiLock.acquire(); } //释放wifi public void releaseWifiLock() { if (wifiLock.isHeld()) { wifiLock.acquire(); } } public void creatWifiLock() { wifiLock = wifiManager.createWifiLock("Test"); } public List<WifiConfiguration> getConfiguration() { return wifiConfiguration; } public void connectConfiguration(int networkId) { boolean isConn = wifiManager.enableNetwork(networkId, true); Log.i(tag, "isConn----->"+isConn); } public void startScan() { wifiManager.startScan(); wifiList = wifiManager.getScanResults(); wifiConfiguration = wifiManager.getConfiguredNetworks(); Log.i(tag, "start scan wifi list size------>"+wifiList.size()); } public List<ScanResult> getWifiList() { return wifiList; } public void LookUpScan() { for (ScanResult result:wifiList) { Log.i(tag, "wifi ssid---->"+result.SSID); } } public String GetMacAddress() { return (wifiInfo == null) ? "NULL" : wifiInfo.getMacAddress(); } public String GetBSSID() { return (wifiInfo == null) ? "NULL" : wifiInfo.getBSSID(); } public int GetIPAddress() { return (wifiInfo == null) ? 0 : wifiInfo.getIpAddress(); } public int GetNetworkId() { return (wifiInfo == null) ? 0 : wifiInfo.getNetworkId(); } public String GetWifiInfo() { return (wifiInfo == null) ? "NULL" : wifiInfo.toString(); } public void AddNetwork(WifiConfiguration wcg) { int wcgID = wifiManager.addNetwork(wcg); wifiManager.enableNetwork(wcgID, true); } public void DisconnectWifi(int netId) { wifiManager.disableNetwork(netId); wifiManager.disconnect(); }}?
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