android 自动连接WiFi

很久没有写博客了，今天记录下做项目中发现的问题，关于自动连接WiFi问题，本来在网上找了许多，发现测试下来不太好用，于是找了找原因，再次记录一下。

先说工具类吧，包含了许多，网上也能找到类似的

public class WifiAdmin {
    // 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 mWifiList;
    // 网络连接列表
    private List mWifiConfiguration;
    // 定义一个WifiLock
    WifiManager.WifiLock mWifiLock;

    public WifiManager getmWifiManager() {
        return mWifiManager;
    }

    public void setmWifiManager(WifiManager mWifiManager) {
        this.mWifiManager = mWifiManager;
    }

    // 构造器
    public WifiAdmin(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);
        }
    }

    // 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 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 getWifiList() {
        return mWifiManager.getScanResults();
    }

    // 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.disconnect();
        boolean b = mWifiManager.enableNetwork(wcgID, true);
        mWifiManager.saveConfiguration();
        mWifiManager.reconnect();
        System.out.println("b--" + b);
    }

    // 断开指定ID的网络
    public void disconnectWifi(int netId) {
        mWifiManager.disableNetwork(netId);
        mWifiManager.disconnect();

    }


    //然后是一个实际应用方法，只验证过没有密码的情况：


    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 = "\"" + getTrueSSID(SSID) + "\"";
移除掉之前的wifi
        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);
这里需要注意下有的文章是注释掉的这一句话，这是不可以的，找了半天才发现原因
            config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.CCMP);
            config.allowedPairwiseCiphers
                    .set(WifiConfiguration.PairwiseCipher.CCMP);
            config.status = WifiConfiguration.Status.ENABLED;

        }

        return config;
    }

    public int getCipherType(String ssid) {
        List list = mWifiManager.getScanResults();
        for (ScanResult scResult : list) {

            if (!TextUtils.isEmpty(scResult.SSID)
                    && (scResult.SSID.trim().equalsIgnoreCase(
                    "\"" + ssid + "\"") || scResult.SSID.trim()
                    .equalsIgnoreCase(ssid))) {
                String capabilities = scResult.capabilities;
                LogUtil.i("hefeng", "capabilities=" + capabilities);

                if (!TextUtils.isEmpty(capabilities)) {

                    if (capabilities.contains("WPA")
                            || capabilities.contains("wpa")) {
                        return 3;

                    } else if (capabilities.contains("WEP")
                            || capabilities.contains("wep")) {
                        return 2;
                    } else {
                        return 1;
                    }
                }
            }
        }
        return -1;
    }

    private WifiConfiguration IsExsits(String ssid) {
        List existingConfigs = mWifiManager
                .getConfiguredNetworks();
        for (WifiConfiguration existingConfig : existingConfigs) {
            // if (existingConfig.SSID.equals("\"" + SSID + "\"")) {
            if (existingConfig.SSID.equalsIgnoreCase("\"" + ssid + "\"")
                    || existingConfig.SSID.equalsIgnoreCase(ssid)) {
                return existingConfig;
            }
        }
        return null;
    }

    public boolean ifWifiExsits(String ssid) {
        mWifiList = getWifiList();
        if (mWifiList == null) {
            return false;
        }
        for (int i = 0; i < mWifiList.size(); i++) {
            if (mWifiList.get(i).SSID.equalsIgnoreCase("\"" + ssid + "\"")
                    || mWifiList.get(i).SSID.equalsIgnoreCase(ssid)) {
                return true;
            }
        }
        return false;
    }

    public String getTrueSSID(String ssid) {
        LogUtil.e("", ssid + "");
        mWifiList = getWifiList();
        if (mWifiList == null) {
            return ssid;
        }
        for (int i = 0; i < mWifiList.size(); i++) {
            if (mWifiList.get(i).SSID.equalsIgnoreCase("\"" + ssid + "\"")
                    || mWifiList.get(i).SSID.equalsIgnoreCase(ssid)) {
                return mWifiList.get(i).SSID;
            }
        }
        return ssid;
    }

    public boolean isConnect(String ssid) {
        WifiInfo wifiInfo = mWifiManager.getConnectionInfo();
        if (wifiInfo != null) {
            return wifiInfo.getSSID().equalsIgnoreCase("\"" + ssid + "\"")
                    || wifiInfo.getSSID().equalsIgnoreCase(ssid);
        }
        return false;
    }

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

    public boolean isWifiEnable() {
        return mWifiManager.isWifiEnabled();
    }
这个大部分和网上的还是一致的，这里记录下。

接下来是使用

  WifiAdmin wifiAdmin = new WifiAdmin(getActivity());
                if (!wifiAdmin.isWifiEnable()) {
                    wifiAdmin.openWifi();
                }
                if (wifiAdmin.getmWifiManager().isWifiEnabled()) {

                    if (!wifiAdmin.isConnect("wifi名称")) {
                        if (wifiAdmin.ifWifiExsits("wifi名称")) {
                            wifiAdmin.addNetwork(wifiAdmin.CreateWifiInfo("wifi名称", "wifi密码", wifiAdmin.getCipherType("wifi名称")));
                        }
                    }
                }

这里一定要加获取wifi和改变wifi的权限!!!!!!!!!

写到这里差不多就要结束了，本来开开心心的去试验，发现在6.0之前的版本是可以的，6.0之后的版本是不可以的，找了一下发现是6.0之后获取wifi的列表，需要获取地理位置，进而才能获取到周围的WiFi的列表.这里需要加申请地址位置权限，这里就不太多阐述了。

最后一定要加上获取地理位置权限