import java.util.List;  import android.content.Context;
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;  public class WifiAdmin{//代码来自网络，原址找不到了……  private WifiManager mWifiManager;   //定义WifiManager对象  private WifiInfo mWifiInfo; //定义WifiInfo对象  private List<ScanResult> mWifiList;   //扫描出的网络连接列表  private List<WifiConfiguration> mWifiConfiguration;   //网络连接列表
  WifiLock mWifiLock; //定义一个WifiLock  public  WifiAdmin(Context context){  mWifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);        //取得WifiManager对象  mWifiInfo = mWifiManager.getConnectionInfo();       //取得WifiInfo对象
    }  //打开WIFI  public void openWifi(){  if (!mWifiManager.isWifiEnabled()){  mWifiManager.setWifiEnabled(true);  }  }  //关闭WIFI  public void closeWifi(){  if (mWifiManager.isWifiEnabled()){  mWifiManager.setWifiEnabled(false);   }  }  //锁定WifiLock，当下载大文件时需要锁定  public void acquireWifiLock(){  mWifiLock.acquire();  }  public void releaseWifiLock(){//解锁WifiLock  //判断时候锁定  if (mWifiLock.isHeld()){  mWifiLock.acquire();  }  }  public void creatWifiLock(){//创建一个WifiLock  mWifiLock = mWifiManager.createWifiLock("Test");  }  public List<WifiConfiguration> getConfiguration(){    //得到配置好的网络  return mWifiConfiguration;  }  public void connectConfiguration(int index){//指定配置好的网络进行连接  //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();       //得到扫描结果   mWifiList = mWifiManager.getScanResults();   mWifiConfiguration = mWifiManager.getConfiguredNetworks();//得到配置好的网络连接
    }  public List<ScanResult> getWifiList(){//得到网络列表  return mWifiList;  }  public StringBuilder lookUpScan(){//查看扫描结果  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、level
            stringBuilder.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BSSID  public 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ID  public 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();  }  //添加一个网络并连接  public void addNetwork(WifiConfiguration wcg){  int wcgID = mWifiManager.addNetwork(wcg);   mWifiManager.enableNetwork(wcgID, true);   }  //断开指定ID的网络  public void disconnectWifi(int netId){  mWifiManager.disableNetwork(netId);  mWifiManager.disconnect();  }
}