private WifiManager wifiManager;// 聲明管理對象OpenWifi
private WifiInfo wifiInfo;// Wifi信息
private List<ScanResult> scanResultList; // 掃描出來的網絡連接列表
private List<WifiConfiguration> wifiConfigList;// 網絡配置列表
private WifiLock wifiLock;// Wifi鎖

package com.wifitest;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 WifiManageClass
{ 
private WifiManager wifiManager;// 聲明管理對象 
private WifiInfo wifiInfo;// Wifi信息 
private List<ScanResult> scanResultList; // 掃描出來的網絡連接列表 
private List<WifiConfiguration> wifiConfigList;// 網絡配置列表 
private WifiLock wifiLock;// Wifi鎖 
public WifiManageClass(Context context)
{ 
this.wifiManager = (WifiManager) context 
.getSystemService(Context.WIFI_SERVICE);// 獲取Wifi服務 
// 得到Wifi信息 
this.wifiInfo = wifiManager.getConnectionInfo();// 得到連接信息 
} 
public boolean getWifiStatus() 
{ 
return wifiManager.isWifiEnabled(); 
} // 打開/關閉 wifi 
public boolean openWifi() 
{ if (!wifiManager.isWifiEnabled()) 
{ 
return wifiManager.setWifiEnabled(true); 
} else { 
return false; 
} 
} 
public boolean closeWifi()
{ 
if (!wifiManager.isWifiEnabled())
{ 
return true; 
} 
else 
{ 
return wifiManager.setWifiEnabled(false); 
} 
} 
// 鎖定/解鎖wifi 
// 其實鎖定WiFI就是判斷wifi是否建立成功，在這里使用的是held，握手的意思acquire 得到！ 
public void lockWifi() 
{ 
wifiLock.acquire(); 
} 
public void unLockWifi()
{ 
if (!wifiLock.isHeld()) { 
wifiLock.release(); // 釋放資源 
} 
} 
// 我本來是寫在構造函數中了，但是考慮到不是每次都會使用Wifi鎖，所以干脆自己建立一個方法！需要時調用，建立就OK 
public void createWifiLock()
{ 
wifiLock = wifiManager.createWifiLock("flyfly"); // 創(chuàng)建一個鎖的標志 
} // 掃描網絡 
public void startScan()
{ 
wifiManager.startScan(); 
scanResultList = wifiManager.getScanResults(); // 掃描返回結果列表 
wifiConfigList = wifiManager.getConfiguredNetworks(); // 掃描配置列表 
} 
public List<ScanResult> getWifiList()
{ 
return scanResultList; 
} 
public List<WifiConfiguration> getWifiConfigList()
{ 
return wifiConfigList; 
} 
// 獲取掃描列表 
public StringBuilder lookUpscan() { 
StringBuilder scanBuilder = new StringBuilder(); 
for (int i = 0; i < scanResultList.size(); i++) 
{ 
scanBuilder.append("編號：" + (i + 1)); 
scanBuilder.append(scanResultList.get(i).toString()); 
//所有信息 
scanBuilder.append("\n"); 
} 
return scanBuilder; 
} //獲取指定信號的強度 
public int getLevel(int NetId) 
{ 
return scanResultList.get(NetId).level; 
} // 獲取本機Mac地址 
public String getMac() { 
return (wifiInfo == null) ? "" : wifiInfo.getMacAddress(); 
} 
public String getBSSID()
{ 
return (wifiInfo == null) ? null : wifiInfo.getBSSID(); 
} 
public String getSSID() 
{ 
return (wifiInfo == null) ? null : wifiInfo.getSSID(); 
} 
// 返回當前連接的網絡的ID 
public int getCurrentNetId() 
{ 
return (wifiInfo == null) ? null : wifiInfo.getNetworkId(); 
} // 返回所有信息 
public String getwifiInfo() 
{ 
return (wifiInfo == null) ? null : wifiInfo.toString(); 
} // 獲取IP地址 
public int getIP() { 
return (wifiInfo == null) ? null : wifiInfo.getIpAddress(); 
} // 添加一個連接 
public boolean addNetWordLink(WifiConfiguration config) { 
int NetId = wifiManager.addNetwork(config); 
return wifiManager.enableNetwork(NetId, true); 
} // 禁用一個鏈接 public boolean disableNetWordLick(int NetId) { 
wifiManager.disableNetwork(NetId); 
return wifiManager.disconnect(); 
} // 移除一個鏈接 
public boolean removeNetworkLink(int NetId)
{ 
return wifiManager.removeNetwork(NetId); 
} //不顯示SSID public void hiddenSSID(int NetId) 
{ 
wifiConfigList.get(NetId).hiddenSSID=true; 
} //顯示SSID public void displaySSID(int NetId) 
{ 
wifiConfigList.get(NetId).hiddenSSID=false; 
} 
}

<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"></uses-permission><uses-permission android:name="adnroid.permission.ACCESS_CHECKIN_PROPERTTES"></uses-permission><uses-permission android:name="android.permission.WAKE_LOCK"></uses-permission><uses-permission android:name="android.permission.INTERNET"></uses-permission><uses-permission android:name="adnroid.permission.CHANGE_WIFI_STATE"></uses-permission><uses-permission android:name="android.permission.MODIFY_PHONE_STATE"></uses-permission>