android开发 wifi开发工具类

import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.Iterator;
import java.util.List;
import android.content.Context;
import android.net.ConnectivityManager;
import android.net.DhcpInfo;
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.util.Log;

public class CusWifiUtil {

    // private static CusWifiUtil mWifiUtils = null;
    private List<WifiConfiguration> mWifiConfiguration;
    private WifiInfo mWifiInfo;
    private DhcpInfo mDhcpInfo;
    private List<ScanResult> mWifiList;
    private WifiManager.WifiLock mWifiLock;
    public WifiManager mWifiManager;
    private NetworkInfo mNetworkInfo;

    private String TAG = "WifiUtils";
    private Context mContext;

    public CusWifiUtil(Context paramContext) {
        mContext = paramContext;
        mWifiManager = (WifiManager) paramContext
                .getSystemService(Context.WIFI_SERVICE);
        mDhcpInfo = mWifiManager.getDhcpInfo();
        mWifiInfo = mWifiManager.getConnectionInfo();
        mNetworkInfo = ((ConnectivityManager) paramContext
                .getSystemService(Context.CONNECTIVITY_SERVICE))
                .getNetworkInfo(ConnectivityManager.TYPE_WIFI);
    }

    public void setNewWifiManagerInfo() {
        mWifiInfo = mWifiManager.getConnectionInfo();
        mDhcpInfo = mWifiManager.getDhcpInfo();
    }

    // public static WifiUtils getInstance(Context paramContext) {
    // if (mWifiUtils == null)
    // mWifiUtils = new WifiUtils(paramContext);
    // return mWifiUtils;
    // }

    private WifiConfiguration isExsits(String paramString) {
        Iterator<WifiConfiguration> localIterator = mWifiManager
                .getConfiguredNetworks().iterator();
        WifiConfiguration localWifiConfiguration;
        do {
            if (!localIterator.hasNext())
                return null;
            localWifiConfiguration = (WifiConfiguration) localIterator.next();
        } while (!localWifiConfiguration.SSID.equals(""" + paramString + """));
        return localWifiConfiguration;
    }

    /**
     * 获取热点状态
     * 
     * @return boolean值，对应热点的开启(true)和关闭(false)
     */
    public boolean getWifiApState() {
        try {
            int i = ((Integer) mWifiManager.getClass()
                    .getMethod("getWifiApState", new Class[0])
                    .invoke(mWifiManager, new Object[0])).intValue();
            return (3 == i) || (13 == i);
        } catch (Exception localException) {
        }
        return false;
    }

    /**
     * 判断是否连接上wifi
     * 
     * @return boolean值(isConnect),对应已连接(true)和未连接(false)
     */
    public boolean isWifiConnect() {
        return mNetworkInfo.isConnected();
    }

    public void AcquireWifiLock() {
        mWifiLock.acquire();
    }

    public void CreatWifiLock() {
        mWifiLock = mWifiManager.createWifiLock("Test");
    }

    // public void OpenWifi() {
    // Log.v(TAG, "OpenWifi");
    // if (!mWifiManager.isWifiEnabled())
    // mWifiManager.setWifiEnabled(true);
    // }

    public void ReleaseWifiLock() {
        if (mWifiLock.isHeld())
            mWifiLock.release();
    }

    public void closeWifi() {
        mWifiManager.setWifiEnabled(false);
    }

    public void connectConfiguration(int paramInt) {
        if (paramInt > mWifiConfiguration.size())
            return;
        mWifiManager
                .enableNetwork(
                        ((WifiConfiguration) mWifiConfiguration.get(paramInt)).networkId,
                        true);
    }

    public void removeNetwork(int netId) {
        if (mWifiManager != null) {
            mWifiManager.removeNetwork(netId);
        }
    }

    public void createWiFiAP(WifiConfiguration paramWifiConfiguration,
            boolean paramBoolean) {
        try {
            Class<? extends WifiManager> localClass = mWifiManager.getClass();
            Class[] arrayOfClass = new Class[2];
            arrayOfClass[0] = WifiConfiguration.class;
            arrayOfClass[1] = Boolean.TYPE;
            Method localMethod = localClass.getMethod("setWifiApEnabled",
                    arrayOfClass);
            WifiManager localWifiManager = mWifiManager;
            Object[] arrayOfObject = new Object[2];
            arrayOfObject[0] = paramWifiConfiguration;
            arrayOfObject[1] = Boolean.valueOf(paramBoolean);
            localMethod.invoke(localWifiManager, arrayOfObject);
            return;
        } catch (Exception localException) {
            localException.printStackTrace();
        }
    }

    /**
     * 用户创建热点的时候用
     * @param SSID
     * @param Password
     * @param Type
     * @return
     */
    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 + """;
        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.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.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;
    }
    /**
     * 用于创建wifi并连接wifi热点，跟CreateWifiInfo差别在于双引号
     * @param SSID
     * @param Password
     * @param Type
     * @return
     */
    public WifiConfiguration CreateWifiInfoForConnectAP(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;
    }

    public void disconnectWifi(int paramInt) {
        mWifiManager.disableNetwork(paramInt);
    }

    public String getApSSID() {
        try {
            Method localMethod = mWifiManager.getClass().getDeclaredMethod(
                    "getWifiApConfiguration", new Class[0]);
            if (localMethod == null)
                return null;
            Object localObject1 = localMethod.invoke(mWifiManager,
                    new Object[0]);
            if (localObject1 == null)
                return null;
            WifiConfiguration localWifiConfiguration = (WifiConfiguration) localObject1;
            if (localWifiConfiguration.SSID != null)
                return localWifiConfiguration.SSID;
            Field localField1 = WifiConfiguration.class
                    .getDeclaredField("mWifiApProfile");
            if (localField1 == null)
                return null;
            localField1.setAccessible(true);
            Object localObject2 = localField1.get(localWifiConfiguration);
            localField1.setAccessible(false);
            if (localObject2 == null)
                return null;
            Field localField2 = localObject2.getClass()
                    .getDeclaredField("SSID");
            localField2.setAccessible(true);
            Object localObject3 = localField2.get(localObject2);
            if (localObject3 == null)
                return null;
            localField2.setAccessible(false);
            String str = (String) localObject3;
            return str;
        } catch (Exception localException) {
        }
        return null;
    }

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

    public String getSSID() {
        if (mWifiInfo == null)
            return "NULL";
        return mWifiInfo.getSSID();
    }

    public List<WifiConfiguration> getConfiguration() {
        return mWifiConfiguration;
    }

    public String getLocalIPAddress() {
        if (mWifiInfo == null)
            return "NULL";
        return intToIp(mWifiInfo.getIpAddress());
    }

    public String getServerIPAddress() {
        if (mDhcpInfo == null)
            return "NULL";
        return intToIp(mDhcpInfo.serverAddress);
    }

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

    public int getNetworkId() {
        if (mWifiInfo == null)
            return 0;
        return mWifiInfo.getNetworkId();
    }

    public int getWifiApStateInt() {
        try {
            int i = ((Integer) mWifiManager.getClass()
                    .getMethod("getWifiApState", new Class[0])
                    .invoke(mWifiManager, new Object[0])).intValue();
            return i;
        } catch (Exception localException) {
        }
        return 4;
    }

    public WifiInfo getWifiInfo() {
        return mWifiManager.getConnectionInfo();
    }

    public List<ScanResult> getWifiList() {
        return mWifiList;
    }

    public StringBuilder lookUpScan() {
        StringBuilder localStringBuilder = new StringBuilder();
        for (int i = 0;; i++) {
            if (i >= 2)
                return localStringBuilder;
            localStringBuilder.append("Index_"
                    + Integer.valueOf(i + 1).toString() + ":");
            localStringBuilder.append(((ScanResult) mWifiList.get(i))
                    .toString());
            localStringBuilder.append("/n");
        }
    }

    public void setWifiList() {
        mWifiList = mWifiManager.getScanResults();
        Log.v(TAG, "mWifiList.size()=" + mWifiList.size());
    }

    public void startScan() {
        mWifiManager.startScan();
    }

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

    /***********************************/
    // 打开WIFI
    public boolean openWifi() {
        mWifiManager = (WifiManager) mContext
                .getSystemService(Context.WIFI_SERVICE);
        if (!mWifiManager.isWifiEnabled()) {
            Log.v(TAG, "打开wifi");
            return mWifiManager.setWifiEnabled(true);
        }
        return true;
    }

    // 添加一个网络并连接
    public boolean addNetwork(WifiConfiguration wcg) {
        if (!this.openWifi()) {
            Log.v("addNetwork", "openWifi is false");
            return false;
        }
        // 开启wifi功能需要一段时间(我在手机上测试一般需要1-3秒左右)，所以要等到wifi
        // 状态变成WIFI_STATE_ENABLED的时候才能执行下面的语句
        while (mWifiManager.getWifiState() == WifiManager.WIFI_STATE_ENABLING) {
            try {
                // 为了避免程序一直while循环，让它睡个200毫秒在检测……

                Thread.currentThread();
                Thread.sleep(200);
            } catch (InterruptedException ie) {
                ie.printStackTrace();
            }
        }
        if (wcg == null) {
            Log.v("addNetwork", "wcg == null");
            return false;
        }

        WifiConfiguration tempConfig = this.IsExsits(wcg.SSID);

        if (tempConfig != null) {
            Log.v("addNetwork", "tempConfig != null");
            mWifiManager.removeNetwork(tempConfig.networkId);
        }

        int netID = mWifiManager.addNetwork(wcg);
        Log.v("addNetwork", "netID：" + netID);
        boolean bRet = mWifiManager.enableNetwork(netID, true);
        if (bRet)
            Log.v("addNetwork", "enableNetwork：" + bRet);
        boolean bConn = mWifiManager.reconnect();
        if (bConn)
            Log.v("addNetwork", "reconnect：" + bConn);
        long startTime = System.currentTimeMillis();
        boolean IsConn = false;
        while (true) {
            mNetworkInfo = ((ConnectivityManager) mContext
                    .getSystemService(Context.CONNECTIVITY_SERVICE))
                    .getNetworkInfo(ConnectivityManager.TYPE_WIFI);
            if (mNetworkInfo.isConnected()) {
                IsConn = true;
                break;
            } else if (System.currentTimeMillis() - startTime > 3 * 1000) {
                IsConn = false;
                break;
            }
        }
        return IsConn;
    }

    private WifiConfiguration IsExsits(String SSID) {
        List<WifiConfiguration> existingConfigs = mWifiManager
                .getConfiguredNetworks();
        if (existingConfigs == null)
            return null;
        for (WifiConfiguration existingConfig : existingConfigs) {
            if (existingConfig.SSID!=null && existingConfig.SSID.equals(""" + SSID + """)) {
                return existingConfig;
            }
        }
        return null;
    }
    /**
     * wifi热点开关
     * 
     * @param enabled
     *            true：打开 false：关闭
     * @return true：成功 false：失败
     */
    // public boolean setWifiApEnabled(boolean enabled) {
    // System.out.println(TAG + ":开启热点");
    // if (enabled) { // disable WiFi in any case
    // //wifi和热点不能同时打开，所以打开热点的时候需要关闭wifi
    // mWifiManager.setWifiEnabled(false);
    // System.out.println(TAG + ":关闭wifi");
    // }else{
    // mWifiManager.setWifiEnabled(true);
    // }
    // try {
    // //热点的配置类
    // WifiConfiguration apConfig = new WifiConfiguration();
    // //配置热点的名称(可以在名字后面加点随机数什么的)
    // apConfig.SSID = WIFI_HOST_SSID;
    // //配置热点的密码
    // apConfig.preSharedKey = WIFI_HOST_PRESHARED_KEY;
    // //安全：WPA2_PSK
    // apConfig.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.WPA_PSK);
    // //通过反射调用设置热点
    // Method method = wifiManager.getClass().getMethod(
    // "setWifiApEnabled", WifiConfiguration.class, Boolean.TYPE);
    // //返回热点打开状态
    // return (Boolean) method.invoke(wifiManager, apConfig, enabled);
    // } catch (Exception e) {
    // return false;
    // }
    // }
}

注意:CreateWifiInfoForConnectAP 和 CreateWifiInfo的关键区别，使用时注意。不知道为什么创建热点不需要双引号，但是到连接wifi热点时却需要，有知道的童鞋麻烦告知下

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原文地址：https://www.cnblogs.com/feijian/p/4927685.html