Android-开启和关闭wifi的代码段
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1·申请权限： android.permission.ACCESS_WIFI_STATE android.permission.CHANGE_WIFI_STATE android.permission.WAKE_LOCK 2·获取WifiManager wifiManager = (WifiManager) this.getSystemService(Context.WIFI_SERVICE); 3·开启、关闭wifi if (wifiManager.isWifiEnabled()) { wifiManager.setWifiEnabled(false); } else { wifiManager.setWifiEnabled(true); } 4·注意 如果遇到force-close, 选wait即可, 因为启动wifi需要几秒钟, UI如果5妙钟还没反映的话, 系统会给你这个force close exception Android Wifi的使用 package com.Aina.Android;
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;
/** * com.Aina.Android Pro_wifi * * @author Aina.huang E-mail: [email protected] * @version 创建时间：2010 Jul 21, 2010 12:29:00 PM 类说明 */ public class WifiAdmin {
private WifiManager mWifiManager = null; private WifiInfo mWifiInfo = null; private List private List private WifiLock mWifiLock = null;
public WifiAdmin(Context mContext) { mWifiManager = (WifiManager) mContext .getSystemService(mContext.WIFI_SERVICE); mWifiInfo = mWifiManager.getConnectionInfo(); }
public void OpenWifi() { if (!mWifiManager.isWifiEnabled()) { mWifiManager.setWifiEnabled(true);// 打开wifi } }
public void CloseWife() { if (mWifiManager.isWifiEnabled()) { mWifiManager.setWifiEnabled(false);// 关闭wifi } }
public void lockWifi() { mWifiLock.acquire();// 锁定wifi }
public void rlockWifi() { if (mWifiLock.isHeld()) { mWifiLock.acquire();// 解锁wifi } }
public void Createwifilock() { mWifiLock = mWifiManager.createWifiLock("Testss");// 创建一个wifilock }
public List return mWifiConfiguration;// 得到配置好的网络 }
public void ConnectConfiguration(int index) { if (index > mWifiConfiguration.size()) { return; } mWifiManager.enableNetwork(mWifiConfiguration.get(index).networkId, true);//连接配置好的指定ID的网络 } public void StartScan() { mWifiManager.startScan(); //得到扫描结果 mWifiList = mWifiManager.getScanResults(); //得到配置好的网络连接 mWifiConfiguration = mWifiManager.getConfiguredNetworks(); } //得到网络列表 public List { return mWifiList; } //查看扫描结果 public StringBuilder LookUpScan() { 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(); } } |