wifi自定義的一個工具類

import android.content.Context;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
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;

import java.util.List;

public class WifiUtil {
    // WifiManager.WIFI_STATE_ENABLED WiFi已打開
    // WifiManager.WIFI_STATE_ENABLING WiFi打開中
    // WifiManager.WIFI_STATE_DISABLING WiFi關閉中
    // WifiManager.WIFI_STATE_DISABLED WiFi已關閉
    // WifiManager.WIFI_STATE_UNKNOWN 未知的WiFi狀態
    // 定義一個WifiManager對象

    private WifiManager mWifiManager;

    // 定義一個WifiInfo對象
    private WifiInfo mWifiInfo;
    // 掃描出的網絡連接列表
    private List<ScanResult> mWifiList;
    // 網絡連接列表
    private List<WifiConfiguration> mWifiConfigurations;
    WifiLock mWifiLock;
    Context mContext;

    public WifiUtil(Context context) {

        // 取得WifiManager對象
        mContext = context;
        mWifiManager = (WifiManager) context
                .getSystemService(Context.WIFI_SERVICE);

        // 取得WifiInfo對象
        mWifiInfo = mWifiManager.getConnectionInfo();
    }

    // 打開wifi
    public void openWifi() {

        if (!mWifiManager.isWifiEnabled()) {

            mWifiManager.setWifiEnabled(true);

        }

    }

    public boolean isConn() {
        ConnectivityManager connManager = (ConnectivityManager) mContext
                .getSystemService(mContext.CONNECTIVITY_SERVICE);
        NetworkInfo mWifi = connManager
                .getNetworkInfo(ConnectivityManager.TYPE_WIFI);
        return mWifi.isConnected();
    }

    // 關閉wifi
    public void closeWifi() {

        if (!mWifiManager.isWifiEnabled()) {

            mWifiManager.setWifiEnabled(false);

        }
    }

    // 檢查當前wifi狀態
    public int checkState() {
        //wifi5種狀態
        //1. 打開
        //2. 關閉
        //3. 打開中
        //4. 關閉中
        //5. 未知的網卡
        return mWifiManager.getWifiState();
    }

    // 鎖定wifiLock
    public void acquireWifiLock() {
        //
        mWifiLock.acquire();
    }

    // 解鎖wifiLock
    public void releaseWifiLock() {
        // 判斷是否鎖定
        if (mWifiLock.isHeld()) {

            mWifiLock.acquire();
        }
    }

    // 創建一個wifiLock
    public void createWifiLock() {
        mWifiLock = mWifiManager.createWifiLock("test");
    }

    // 得到配置好的網絡
    public List<WifiConfiguration> getConfiguration() {
        return mWifiConfigurations;
    }

    // 指定配置好的網絡進行連接
    public void connetionConfiguration(int index) {
        if (index > mWifiConfigurations.size()) {
            return;
        }
        // 連接配置好指定ID的網絡
        mWifiManager.enableNetwork(mWifiConfigurations.get(index).networkId,
                true);
    }

    public void startScan() {
        mWifiManager.startScan();
        // 得到掃描結果
        mWifiList = mWifiManager.getScanResults();
        // 得到配置好的網絡連接
        mWifiConfigurations = mWifiManager.getConfiguredNetworks();
    }

    // 得到網絡列表
    public List<ScanResult> getWifiList() {
        return mWifiList;
    }

    // 查看掃描結果
    public StringBuffer lookUpScan() {
        StringBuffer sb = new StringBuffer();
        for (int i = 0; i < mWifiList.size(); i++) {
            sb.append("Index_" + new Integer(i + 1).toString() + ":");
            // 將ScanResult信息轉換成一個字符串包
            // 其中把包括：BSSID、SSID、capabilities、frequency、level
            sb.append((mWifiList.get(i)).toString()).append("\n");
        }
        return sb;
    }

    public String getMacAddress() {
        return (mWifiInfo == null) ? "NULL" : mWifiInfo.getMacAddress();
    }

    public String getBSSID() {
        return (mWifiInfo == null) ? "NULL" : mWifiInfo.getBSSID();
    }

    public int getIpAddress() {
        return (mWifiInfo == null) ? 0 : mWifiInfo.getIpAddress();
    } // 得到連接的ID

    public String getSSID() {
        return (mWifiInfo == null) ? "" : mWifiInfo.getSSID().replace("\"", "");
    } // 得到連接的ID

    public int getNetWordId() {
        return (mWifiInfo == null) ? 0 : mWifiInfo.getNetworkId();
    } // 得到wifiInfo的所有信息

    public String getWifiInfo() {
        return (mWifiInfo == null) ? "NULL" : mWifiInfo.toString();
    }

    public String getGateway() {
        return mWifiInfo == null ? "NULL"
                : intToIp(mWifiManager.getDhcpInfo().gateway);
    }

    private String intToIp(int paramInt) {
        return (paramInt & 0xFF) + "." + (0xFF & paramInt >> 8) + "."
                + (0xFF & paramInt >> 16) + "." + (0xFF & paramInt >> 24);
    }

    // 添加一個網絡並連接

    public void addNetWork(WifiConfiguration configuration) {
        int wcgId = mWifiManager.addNetwork(configuration);
        mWifiManager.enableNetwork(wcgId, true);
    }

    // 斷開指定ID的網絡

    public void disConnectionWifi(int netId) {
        mWifiManager.disableNetwork(netId);
        mWifiManager.disconnect();

    }

    public static final int TYPE_NOPASSWORD = 1;
    public static final int TYPE_WEP = 2;
    public static final int TYPE_WPA_WPA2 = 3;

    public WifiConfiguration createWifiConfig(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.wepKeys[0] = "";
            config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE);
            // config.wepTxKeyIndex = 0;
        }
        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.allowedProtocols.set(WifiConfiguration.Protocol.WPA);
            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;
    }
}