Android Wifi控制方法总结

写了一个工具类来辅助处理wifi相关状态控制和连接等功能，参考了网上的相关文件，并修改了里面的一些bug和问题，本文给出的方法均经过验证可用～

    package com.xys.jrdtraining.network;                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;                /**        * wifi ctrl utils class        *         * @author yisheng.xu        *         */        public class WifiOpenHelper {            // 定义WifiManager对象            private WifiManager mWifiManager;            // 定义WifiInfo对象            private WifiInfo mWifiInfo;            // 扫描出的网络连接列表            private List<ScanResult> mWifiList;            // 网络连接列表            private List<WifiConfiguration> mWifiConfiguration;            // 定义一个WifiLock            WifiLock mWifiLock;                    // 构造器            public WifiOpenHelper(Context context) {                // 取得WifiManager对象                mWifiManager = (WifiManager) context                        .getSystemService(Context.WIFI_SERVICE);                // 取得WifiInfo对象                mWifiInfo = mWifiManager.getConnectionInfo();            }                    // 打开WIFI            public void openWifi() {                if (!mWifiManager.isWifiEnabled()) {                    mWifiManager.setWifiEnabled(true);                }            }                    // 断开当前网络            public void disconnectWifi() {                if (!mWifiManager.isWifiEnabled()) {                    mWifiManager.disconnect();                }            }                    // 关闭WIFI            public void closeWifi() {                if (mWifiManager.isWifiEnabled()) {                    mWifiManager.setWifiEnabled(false);                }            }                    // 检查当前WIFI状态            public int checkState() {                return mWifiManager.getWifiState();            }                    // 锁定WifiLock            public void acquireWifiLock() {                mWifiLock.acquire();            }                    // 解锁WifiLock            public void releaseWifiLock() {                // 判断时候锁定                if (mWifiLock.isHeld()) {                    mWifiLock.acquire();                }            }                    // 创建一个WifiLock            public void creatWifiLock() {                mWifiLock = mWifiManager.createWifiLock("Test");            }                    // 得到配置好的网络            public List<WifiConfiguration> getConfiguration() {                return mWifiConfiguration;            }                    // 指定配置好的网络进行连接            public void connectConfiguration(int index) {                // 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();                // 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_" + Integer.valueOf(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);                boolean b = mWifiManager.enableNetwork(wcgID, true);                System.out.println("a--" + wcgID);                System.out.println("b--" + b);            }                    // 断开指定ID的网络            public void disconnectWifi(int netId) {                mWifiManager.disableNetwork(netId);                mWifiManager.disconnect();            }                    public WifiConfiguration CreateWifiInfo(String SSID, String Password,                    int Type) {                WifiConfiguration config = new WifiConfiguration();                config.allowedAuthAlgorithms.clear();                config.allowedGroupCiphers.clear();                config.allowedKeyManagement.clear();                config.allowedPairwiseCiphers.clear();                config.allowedProtocols.clear();                config.SSID = "\"" + SSID + "\"";                        WifiConfiguration tempConfig = this.IsExsits(SSID);                if (tempConfig != null) {                    mWifiManager.removeNetwork(tempConfig.networkId);                }                        if (Type == 1) // WIFICIPHER_NOPASS                {                    config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE);                }                if (Type == 2) // WIFICIPHER_WEP                {                    config.hiddenSSID = true;                    config.wepKeys[0] = "\"" + Password + "\"";                    config.allowedAuthAlgorithms                            .set(WifiConfiguration.AuthAlgorithm.SHARED);                    config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.CCMP);                    config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.TKIP);                    config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP40);                    config.allowedGroupCiphers                            .set(WifiConfiguration.GroupCipher.WEP104);                    config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE);                    config.wepTxKeyIndex = 0;                }                if (Type == 3) // WIFICIPHER_WPA                {                    config.preSharedKey = "\"" + Password + "\"";                    config.hiddenSSID = true;                    config.allowedAuthAlgorithms                            .set(WifiConfiguration.AuthAlgorithm.OPEN);                    config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.TKIP);                    config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.WPA_PSK);                    config.allowedPairwiseCiphers                            .set(WifiConfiguration.PairwiseCipher.TKIP);                    config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.CCMP);                    config.allowedPairwiseCiphers                            .set(WifiConfiguration.PairwiseCipher.CCMP);                    config.status = WifiConfiguration.Status.ENABLED;                }                return config;            }                    private WifiConfiguration IsExsits(String SSID) {                List<WifiConfiguration> existingConfigs = mWifiManager                        .getConfiguredNetworks();                for (WifiConfiguration existingConfig : existingConfigs) {                    if (existingConfig.SSID.equals("\"" + SSID + "\"")) {                        return existingConfig;                    }                }                return null;            }        }