private WifiManager wifiManager;// 聲明管理對象OpenWifiprivate 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>