android 笔记
Android-开启和关闭wifi的代码段1、需要申请的权限
Java代码 http://zkl-1987.iteye.com/javascripts/syntaxhighlighter/clipboard_new.swf
[*]android.permission.ACCESS_WIFI_STATE
[*]android.permission.CHANGE_WIFI_STATE
[*]android.permission.WAKE_LOCK
2、获取WifiManager
Java代码 http://zkl-1987.iteye.com/javascripts/syntaxhighlighter/clipboard_new.swf
[*]wifiManager = (WifiManager) this.getSystemService(Context.WIFI_SERVICE);
3、开启、关闭wifi
Java代码 http://zkl-1987.iteye.com/javascripts/syntaxhighlighter/clipboard_new.swf
[*]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
Java代码 http://zkl-1987.iteye.com/javascripts/syntaxhighlighter/clipboard_new.swf
[*]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: 674023920@qq.com
[*] * @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<ScanResult> mWifiList = null;// 扫描出的网络连接列表
[*] private List<WifiConfiguration> mWifiConfiguration = null;// 网络连接列表
[*] 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<WifiConfiguration> GetConfinguration() {
[*] 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<ScanResult> GetWifiList()
[*] {
[*] 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();
[*] }
[*]}
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