1）新增SSID名稱後，WIFI列表僅能連線該設定的SSID AP

2)    SSID並啟用後，PDA只連線同名SSID的AP，其他連線不上；
3)    MAC地址的應用場景和SSID類同，為避免非法AP設定成我們相同的SSID騙取連線，設定MAC
地址或範圍並啟用後，只有和預置MAC地址匹配的AP才能連線上；

以下就是實現新增SSID和MAC後限制wifi的連線：

package com.android.settings.wifi;

public class WifiSettings extends RestrictedSettingsFragment
        implements DialogInterface.OnClickListener, Indexable, WifiTracker.WifiListener,
        AccessPointListener {
    //定義訪問資料庫的一些變數
    private static final String AUTHORITY="com.android.setting.wifi.provider.wifissidprovider";
    private static final String AUTHORITY_MAC="com.android.setting.wifi.provider.wifimacprovider";
    private static final Uri SSID_CONTENT_URI=Uri.parse("content://"+AUTHORITY);
    private static final Uri MAC_CONTENT_URI=Uri.parse("content://"+AUTHORITY_MAC);
    private List<WifiSsidMac> listSsidMacs;
    @Override
    public void onCreate(Bundle icicle) {
        //初始化list
        listSsidMacs=new ArrayList<WifiSettings.WifiSsidMac>();
    }

    //查詢wifi ssid資料
    private void getWifiSsidData(){
    listSsidMacs.clear();
   Cursor cursor = getContentResolver().query(SSID_CONTENT_URI, new String[]{"rowid as _id","name","status"}, null, null, null);
    if(cursor!=null){
    if(cursor.moveToFirst()){
    WifiSsidMac bean=null;
    do{
          bean=new WifiSsidMac();
          bean.setSsidid(cursor.getInt(0));
          bean.setName(cursor.getString(1));
          bean.setStatus(cursor.getInt(2));
          listSsidMacs.add(bean);
    } while(cursor.moveToNext());
  }
  cursor.close();
 }
}
    
   //查詢wifi mac資料
    private void getWifiMacData(){
Cursor cursor = getContentResolver().query(MAC_CONTENT_URI, new String[]{"rowid as _id","name","status"}, null, null, null);
if(cursor!=null){
if(cursor.moveToFirst()){
WifiSsidMac bean=null;
do{
bean=new WifiSsidMac();
bean.setMacid(cursor.getInt(0));
bean.setName(cursor.getString(1));
bean.setStatus(cursor.getInt(2));
listSsidMacs.add(bean);
} while(cursor.moveToNext());
}
cursor.close();
}
}
    //宣告ssid mac物件
    private class WifiSsidMac{
    private int ssidid;
    private int macid;
    private String name;
    private int status;
public int getSsidid() {
return ssidid;
}
public void setSsidid(int ssidid) {
this.ssidid = ssidid;
}
public int getMacid() {
return macid;
}
public void setMacid(int macid) {
this.macid = macid;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getStatus() {
return status;
}
public void setStatus(int status) {
this.status = status;
}
@Override
public String toString() {
return "WifiSsidMac [ssidid=" + ssidid + ", macid=" + macid + ", name=" + name + ", status=" + status + "]";
}
    }
    
    @Override
    public void onActivityCreated(Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);
        //獲取wifi管理器
        mWifiTracker =
                new WifiTracker(getActivity(), this, mBgThread.getLooper(), true, true, false);
        mWifiManager = mWifiTracker.getManager();
        。。。
        //獲取重新整理wifi列表
        if (intent.hasExtra(EXTRA_START_CONNECT_SSID)) {
            onAccessPointsChanged();
        }
    }

    //開始搜尋wifi
    @Override
    public void onResume() {
        mWifiTracker.startTracking();
    }

    //連線wifi
    private void accessPointConnect(){
    if (mSelectedAccessPoint.isSaved()) {
            connect(mSelectedAccessPoint.getConfig());
        } else if (mSelectedAccessPoint.getSecurity() == AccessPoint.SECURITY_NONE) {
            /** Bypass dialog for unsecured networks */
            mSelectedAccessPoint.generateOpenNetworkConfig();
            connect(mSelectedAccessPoint.getConfig());
        } else {
            mDlgModify = false;
            showDialog(mSelectedAccessPoint, true);
        }

    }

    //處理點選選單項做wifi連線操作
    @Override
    public boolean onContextItemSelected(MenuItem item) {
        if (mSelectedAccessPoint == null) {
            return super.onContextItemSelected(item);
        }
        switch (item.getItemId()) {
            case MENU_ID_CONNECT: {
            if(true){
            if(mSelectedAccessPoint.isSsidBinding() ||mSelectedAccessPoint.isMacBinding()){
            accessPointConnect();
                } else{
                Toast.makeText(getActivity(), getString(R.string.wifi_disconnected), Toast.LENGTH_SHORT).show();
                }
            } else{
            accessPointConnect();
            }
                return true;
            }
            case MENU_ID_FORGET: {
                forget();
                return true;
            }
        }
        return super.onContextItemSelected(item);
    }


    //點選項彈出框做連線操作
    @Override
    public boolean onPreferenceTreeClick(PreferenceScreen screen, Preference preference) {
        if (preference instanceof AccessPointPreference) {
            mSelectedAccessPoint = ((AccessPointPreference) preference).getAccessPoint();
            if(true){
          //如果ssid和mac繫結才可以點選
           if(mSelectedAccessPoint.isSsidBinding() || mSelectedAccessPoint.isMacBinding()){
            onPreferenceTreeClick();
          } else{
          Toast.makeText(getActivity(), getString(R.string.wifi_disconnected), Toast.LENGTH_SHORT).show();
          }
            } else{
            onPreferenceTreeClick();
            }
        } else {
            return super.onPreferenceTreeClick(screen, preference);
        }
        return true;
    }
    
    private void onPreferenceTreeClick(){
    /** Bypass dialog for unsecured, unsaved, and inactive networks */
        if (mSelectedAccessPoint.getSecurity() == AccessPoint.SECURITY_NONE &&
                !mSelectedAccessPoint.isSaved() && !mSelectedAccessPoint.isActive()) {
            /// M: support open ap wps test @{
            if (FeatureOption.MTK_OPEN_AP_WPS_SUPPORT
                && mSelectedAccessPoint.getWpsAvailable()) {
                showDialog(mSelectedAccessPoint, false);
            } else {
            /// @}
                mSelectedAccessPoint.generateOpenNetworkConfig();
                if (!savedNetworksExist) {
                    savedNetworksExist = true;
                    getActivity().invalidateOptionsMenu();
                }
                connect(mSelectedAccessPoint.getConfig());
            }
        } else if (mSelectedAccessPoint.isSaved()){
            mDlgModify = false;
            showDialog(mSelectedAccessPoint, false);
        } else {
            mDlgModify = false;
            showDialog(mSelectedAccessPoint, true);
        }
    }


    private void showDialog(AccessPoint accessPoint, boolean edit) {
        if (accessPoint != null) {
            WifiConfiguration config = accessPoint.getConfig();
            if (isEditabilityLockedDown(getActivity(), config) && accessPoint.isActive()) {
                final int userId = UserHandle.getUserId(config.creatorUid);
                final PackageManager pm = getActivity().getPackageManager();
                final IPackageManager ipm = AppGlobals.getPackageManager();
                String appName = pm.getNameForUid(config.creatorUid);
                try {
                    final ApplicationInfo appInfo = ipm.getApplicationInfo(appName, /* flags */ 0,
                            userId);
                    final CharSequence label = pm.getApplicationLabel(appInfo);
                    if (label != null) {
                        appName = label.toString();
                    }
                } catch (RemoteException e) {
                    // leave appName as packageName
                }
                final AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
                builder.setTitle(accessPoint.getSsid())
                        .setMessage(getString(R.string.wifi_alert_lockdown_by_device_owner,
                                appName))
                        .setPositiveButton(android.R.string.ok, null)
                        .show();
                return;
            }
        }


        if (mDialog != null) {
            removeDialog(WIFI_DIALOG_ID);
            mDialog = null;
        }

        // Save the access point and edit mode
        mDlgAccessPoint = accessPoint;
        mDlgEdit = edit;

        showDialog(WIFI_DIALOG_ID);
    }

    @Override
    public Dialog onCreateDialog(int dialogId) {
        switch (dialogId) {
            case WIFI_DIALOG_ID:
                AccessPoint ap = mDlgAccessPoint; // For manual launch
                if (ap == null) { // For re-launch from saved state
                    if (mAccessPointSavedState != null) {
                        ap = new AccessPoint(getActivity(), mAccessPointSavedState);
                        // For repeated orientation changes
                        mDlgAccessPoint = ap;
                        // Reset the saved access point data
                        mAccessPointSavedState = null;
                    }
                }
                // If it's null, fine, it's for Add Network
                mSelectedAccessPoint = ap;
                ///M: add mtk feature
                if (mSelectedAccessPoint != null) {
                    mWifiSettingsExt.recordPriority(mSelectedAccessPoint.getConfig());
                }
                final boolean hideForget = (ap == null || isEditabilityLockedDown(getActivity(),
                        ap.getConfig()));
                mDialog = new WifiDialog(getActivity(), this, ap, mDlgEdit,
                        mDlgModify, /* no hide submit/connect */ false,
                        /* hide forget if config locked down */ hideForget);
                return mDialog;
            case WPS_PBC_DIALOG_ID:
                return new WpsDialog(getActivity(), WpsInfo.PBC);
            case WPS_PIN_DIALOG_ID:
                return new WpsDialog(getActivity(), WpsInfo.DISPLAY);
            case WRITE_NFC_DIALOG_ID:
                if (mSelectedAccessPoint != null) {
                    mWifiToNfcDialog = new WriteWifiConfigToNfcDialog(
                            getActivity(), mSelectedAccessPoint.getConfig().networkId,
                            mSelectedAccessPoint.getSecurity(),
                            mWifiManager);
                } else if (mWifiNfcDialogSavedState != null) {
                    mWifiToNfcDialog = new WriteWifiConfigToNfcDialog(
                            getActivity(), mWifiNfcDialogSavedState, mWifiManager);
                }

                return mWifiToNfcDialog;
        }
        return super.onCreateDialog(dialogId);
    }

    /**
     * Shows the latest access points available with supplemental information like
     * the strength of network and the security for it.
     */
    @Override
    public void onAccessPointsChanged() {
        // Safeguard from some delayed event handling
        if (getActivity() == null) return;
        if (isUiRestricted()) {
            addMessagePreference(R.string.wifi_empty_list_user_restricted);
            return;
        }
        final int wifiState = mWifiManager.getWifiState();

        switch (wifiState) {
            case WifiManager.WIFI_STATE_ENABLED:
            //獲取wifi列表
            List<ScanResult> listScanResult=null;
            if(true){
            getWifiSsidData();
                     getWifiMacData();
                     listScanResult= mWifiManager.getScanResults();
                     Log.i("chensenquan", "wifi listSsidMacs count:"+listSsidMacs.size());
                     Log.i("chensenquan", "wifi listScanResult count:"+listScanResult.size());
            }
                // AccessPoints are automatically sorted with TreeSet.
                final Collection<AccessPoint> accessPoints =
                        mWifiTracker.getAccessPoints();
                //getPreferenceScreen().removeAll();
                mWifiSettingsExt.emptyCategory(getPreferenceScreen());

                boolean hasAvailableAccessPoints = false;
                /// M: add ap to screen @{
                Log.d(TAG, "accessPoints.size() = "  + accessPoints.size());
                int index = 0;
                for (AccessPoint accessPoint : accessPoints) {
                    // Ignore access points that are out of range.
                    if (accessPoint.getLevel() != -1) {
                        hasAvailableAccessPoints = true;
                        if (accessPoint.getTag() != null) {
                            final Preference pref = (Preference) accessPoint.getTag();
                            pref.setOrder(index++);
                            //getPreferenceScreen().addPreference(pref);
                            mWifiSettingsExt.addPreference(getPreferenceScreen(),
                                pref, accessPoint.getConfig() != null);
                            continue;
                        }
                        
                        //設定上報的BSSID（mac地址）
                        //注意：當沒有連線wifi時getBSSID()是有值的，連線之後上報的BSSID為空，
                        所有要通過mWifiManager.getScanResults()獲取BSSID來設定accessPoint.setBSSID()

                       if(true){

                                for(ScanResult scanResult:listScanResult){

                                      if(scanResult.SSID.equals(accessPoint.getSsid().toString())){

                                               Log.i("chensenquan", "wifi scanResult ssid name:"+scanResult.SSID);

                                               accessPoint.setBSSID(scanResult.BSSID);

                                         } 

                                  } 

                                 setBindingSSIDMAC(accessPoint);

                        }  

                       //這個類繫結wifi每項詳細資訊，利用它來做的連線
                        AccessPointPreference preference = new AccessPointPreference(accessPoint,
                                getActivity(), mUserBadgeCache, false);
                        preference.setOrder(index++);
...
                    }
                }
        }
    }
    
   //繫結SSID和MAC
    private void setBindingSSIDMAC(AccessPoint accessPoint){
    String mac=accessPoint.getBSSID();
    accessPoint.setWifiMacAddress(mac);
    Log.i("chensenquan", "wifi mac:"+mac);
    for(WifiSsidMac bean:listSsidMacs){//listSsidMacs是通過新增ssid和mac從資料庫中獲取到的
        //比較相同的ssid來繫結
        if(bean.getName().equals(accessPoint.getSsid().toString())){
        Log.i("chensenquan", "same wifi ssid:"+bean.getSsidid());
        if(bean.getStatus()==1){
         Log.i("chensenquan", "binding wifi ssid status:"+bean.getStatus());
          accessPoint.setSsidBinding(true);
    }
         accessPoint.setWifiSsidid(bean.getSsidid());
 } else {
if(bean.getName().equals(mac)){
  //比較相同的mac來繫結
  Log.i("chensenquan", "same wifi macid:"+bean.getMacid());
  if(bean.getStatus()==1){
  Log.i("chensenquan", "binding wifi mac status:"+bean.getStatus());
      accessPoint.setMacBinding(true);
  }
  accessPoint.setWifiMacid(bean.getMacid());
}
}
}
        
        //如果ssid和mac沒有繫結，就端開連線
        if(accessPoint.getNetworkInfo()!=null){
        boolean isConnected=accessPoint.getNetworkInfo().isConnected();
        Log.i("chensenquan", "is connected:"+isConnected);
        if(isConnected && !accessPoint.isSsidBinding() && !accessPoint.isMacBinding()){
        Log.i("chensenquan", "disConnected");
        disconnectWifi(accessPoint);
        }
        }
    }
    
    /**
     * 斷開當前連線的網路
     */
    public void disconnectWifi(AccessPoint accessPoint) {
        int netId = accessPoint.getConfig().networkId;
        mWifiManager.disableNetwork(netId);
        mWifiManager.disconnect();
    }


    //輸入密碼後做連線
    @Override
    public void onClick(DialogInterface dialogInterface, int button) {
        if (button == WifiDialog.BUTTON_FORGET && mSelectedAccessPoint != null) {
            forget();
        } else if (button == WifiDialog.BUTTON_SUBMIT) {
            if (mDialog != null) {
                submit(mDialog.getController());
            }
        }
    }

    /* package */ void submit(WifiConfigController configController) {
        final WifiConfiguration config = configController.getConfig();
        Log.d(TAG, "submit, config = " + config);
        ///M: add mtk feature
        if (mSelectedAccessPoint != null) {
            mWifiSettingsExt.submit(config, mSelectedAccessPoint,
                mSelectedAccessPoint.getNetworkInfo() != null ?
                mSelectedAccessPoint.getNetworkInfo().getDetailedState() : null);
        }

        if (config == null) {
            if (mSelectedAccessPoint != null
                    && mSelectedAccessPoint.isSaved()) {
                connect(mSelectedAccessPoint.getConfig());
            }
        } else if (configController.isModify()) {
            mWifiManager.save(config, mSaveListener);
        } else {
            mWifiManager.save(config, mSaveListener);
            if (mSelectedAccessPoint != null) { // Not an "Add network"
                connect(config);
            }
        }

        mWifiTracker.resumeScanning();

    }

    //斷開連線，取消儲存
    /* package */ void forget() {
        MetricsLogger.action(getActivity(), MetricsLogger.ACTION_WIFI_FORGET);
        if (!mSelectedAccessPoint.isSaved()) {
            if (mSelectedAccessPoint.getNetworkInfo() != null &&
                    mSelectedAccessPoint.getNetworkInfo().getState() != State.DISCONNECTED) {
                // Network is active but has no network ID - must be ephemeral.
                mWifiManager.disableEphemeralNetwork(
                        AccessPoint.convertToQuotedString(mSelectedAccessPoint.getSsidStr()));
            } else {
                // Should not happen, but a monkey seems to trigger it
                Log.e(TAG, "Failed to forget invalid network " + mSelectedAccessPoint.getConfig());
                return;
            }
        } else {
            mWifiManager.forget(mSelectedAccessPoint.getConfig().networkId, mForgetListener);
        }

        mWifiTracker.resumeScanning();

        // We need to rename/replace "Next" button in wifi setup context.
        changeNextButtonState(false);

        /// M: since we lost a configured AP, left ones priority need to be refreshed
        mWifiSettingsExt.updatePriority();
    }

    //連線
    protected void connect(final WifiConfiguration config) {
        MetricsLogger.action(getActivity(), MetricsLogger.ACTION_WIFI_CONNECT);
        mWifiManager.connect(config, mConnectListener);
    }

    protected void connect(final int networkId) {
        MetricsLogger.action(getActivity(), MetricsLogger.ACTION_WIFI_CONNECT);
        mWifiManager.connect(networkId, mConnectListener);
    }

    /**
     * Refreshes acccess points and ask Wifi module to scan networks again.
     */
    /* package */ void refreshAccessPoints() {
        mWifiTracker.resumeScanning();

        //getPreferenceScreen().removeAll();
        mWifiSettingsExt.emptyCategory(getPreferenceScreen());
    }

    /**
     * Called when "add network" button is pressed.
     */
    /* package */ void onAddNetworkPressed() {
        MetricsLogger.action(getActivity(), MetricsLogger.ACTION_WIFI_ADD_NETWORK);
        // No exact access point is selected.
        mSelectedAccessPoint = null;
        showDialog(null, true);
    }

    /* package */ int getAccessPointsCount() {
        final boolean wifiIsEnabled = mWifiTracker.isWifiEnabled();
        if (wifiIsEnabled) {
            return getPreferenceScreen().getPreferenceCount();
        } else {
            return 0;
        }
    }

    /**
     * Requests wifi module to pause wifi scan. May be ignored when the module is disabled.
     */
    /* package */ void pauseWifiScan() {
        mWifiTracker.pauseScanning();
    }
    /**
     * Requests wifi module to resume wifi scan. May be ignored when the module is disabled.
     */
    /* package */ void resumeWifiScan() {
        mWifiTracker.resumeScanning();
    }

    /**
     * Called when "add network" button in wifi gprs selected is pressed.
     */
    public void addNetworkForSelector() {
        MetricsLogger.action(getActivity(), MetricsLogger.ACTION_WIFI_ADD_NETWORK);
        // No exact access point is selected.
        mSelectedAccessPoint = null;
        showDialog(null, true);
    }

}

這個類是顯示wifi每項的佈局
package com.android.settings.wifi;

import com.android.settings.R;
import com.android.settingslib.wifi.AccessPoint;

public class AccessPointPreference extends Preference {
    public AccessPointPreference(AccessPoint accessPoint, Context context, UserBadgeCache cache,
                                 boolean forSavedNetworks) {
        super(context);
      //如果ssid和mac繫結顯示其繫結後的圖示，加布局顯示
        setWidgetLayoutResource(R.layout.wifi_binding_image);
    }

    public AccessPoint getAccessPoint() {
        return mAccessPoint;
    }


    @Override
    protected void onBindView(View view) {
        super.onBindView(view);
。。。。。。
        view.setContentDescription(mContentDescription);
        //控制其ssid和mac繫結的圖示顯示
        ImageView iv_mac=(ImageView)view.findViewById(R.id.iv_mac);
        ImageView iv_ssid=(ImageView)view.findViewById(R.id.iv_ssid);
        if(mAccessPoint.isSsidBinding() && mAccessPoint.isMacBinding()){
        iv_ssid.setVisibility(View.VISIBLE);
        iv_mac.setVisibility(View.VISIBLE);
        } else  if(mAccessPoint.isSsidBinding()){
        iv_mac.setVisibility(View.GONE);
        } else if(mAccessPoint.isMacBinding()){
        iv_ssid.setVisibility(View.GONE);
        }  else{
        iv_ssid.setVisibility(View.GONE);
        iv_mac.setVisibility(View.GONE);
        }
    }
    。。。。。。

}

這個類是wifi每項的詳細資訊
位置：MT6750M/frameworks/base/packages/SettingsLib/src/com/android/settingslib/wifi
/*
 * Copyright (C) 2015 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */


package com.android.settingslib.wifi;
。。。。。。
import com.android.settingslib.R;
public class AccessPoint implements Comparable<AccessPoint>, Cloneable {
    static final String TAG = "SettingsLib.AccessPoint";
    。。。。。。
    //定義變數
    private String ssid;
    private String bssid;
    private boolean isSsidBinding=false;
    private int wifiSsidid;
    private boolean isMacBinding=false;
    private int wifiMacid;
    private String wifiMacAddress;
    。。。。。。


    public NetworkInfo getNetworkInfo() {
        return mNetworkInfo;
    }


    public int getSecurity() {
        return security;
    }


    public String getSsidStr() {
        return ssid;
    }


    public CharSequence getSsid() {
        SpannableString str = new SpannableString(ssid);
        str.setSpan(new TtsSpan.VerbatimBuilder(ssid).build(), 0, ssid.length(),
                Spannable.SPAN_INCLUSIVE_INCLUSIVE);
        return str;
    }


    //定義繫結時用到的方法
    public String getBSSID() {
        return bssid;
    }


    public void setBSSID(String bssid) {
        this.bssid=bssid;
    }


    public boolean isSsidBinding() {
return isSsidBinding;
    }


    public void setSsidBinding(boolean isSsidBinding) {
this.isSsidBinding = isSsidBinding;
    }


    public int getWifiSsidid() {
return wifiSsidid;
    }


    public void setWifiSsidid(int wifiSsidid) {
this.wifiSsidid = wifiSsidid;
    }


    public boolean isMacBinding() {
return isMacBinding;
    }


    public void setMacBinding(boolean isMacBinding) {
this.isMacBinding = isMacBinding;
    }


    public int getWifiMacid() {
return wifiMacid;
    }


    public void setWifiMacid(int wifiMacid) {
this.wifiMacid = wifiMacid;
    }


    public String getWifiMacAddress() {
return wifiMacAddress;
    }


    public void setWifiMacAddress(String wifiMacAddress) {
this.wifiMacAddress = wifiMacAddress;
    }


    /**
     * Generate and save a default wifiConfiguration with common values.
     * Can only be called for unsecured networks.
     */
    public void generateOpenNetworkConfig() {
        if (security != SECURITY_NONE)
            throw new IllegalStateException();
        if (mConfig != null)
            return;
        mConfig = new WifiConfiguration();
        mConfig.SSID = AccessPoint.convertToQuotedString(ssid);
        mConfig.allowedKeyManagement.set(KeyMgmt.NONE);

    }

    //這個就是開啟wifi開關，掃描到wifi後上報的所有資訊，包括SSID和MAC，wifi連線後BSSID會返回null，至於為什麼為null，還沒有研究出來
    private void initWithScanResult(ScanResult result) {
        ssid = result.SSID;
bssid = result.BSSID;
        security = getSecurity(result);
        /* OPEN AP test support */
        mWpsAvailable = security != SECURITY_EAP && result.capabilities.contains("WPS");
        if (security == SECURITY_PSK)
            pskType = getPskType(result);
        mRssi = result.level;
        mSeen = result.timestamp;
    }


    public static String convertToQuotedString(String string) {
        return "\"" + string + "\"";

    }

    //獲取連線的安全類別
    private static int getSecurity(ScanResult result) {
        ///M: add mtk [email protected]{
        int security = AccessPointExt.getSecurity(result);
        if (security != -1) {
            return security;
        }
        ///@}
        if (result.capabilities.contains("WEP")) {
            return SECURITY_WEP;
        } else if (result.capabilities.contains("PSK")) {
            return SECURITY_PSK;
        } else if (result.capabilities.contains("EAP")) {
            return SECURITY_EAP;
        }
        return SECURITY_NONE;
    }


    static int getSecurity(WifiConfiguration config) {
        if (config.allowedKeyManagement.get(KeyMgmt.WPA_PSK)) {
            return SECURITY_PSK;
        }
        if (config.allowedKeyManagement.get(KeyMgmt.WPA_EAP) ||
                config.allowedKeyManagement.get(KeyMgmt.IEEE8021X)) {
            return SECURITY_EAP;
        }
        ///M: add mtk [email protected]{
        int security = AccessPointExt.getSecurity(config);
        if (security != -1) {
            return security;
        }
        ///@}
        return (config.wepKeys[0] != null) ? SECURITY_WEP : SECURITY_NONE;
    }


    public static String securityToString(int security, int pskType) {
        if (security == SECURITY_WEP) {
            return "WEP";
        } else if (security == SECURITY_PSK) {
            if (pskType == PSK_WPA) {
                return "WPA";
            } else if (pskType == PSK_WPA2) {
                return "WPA2";
            } else if (pskType == PSK_WPA_WPA2) {
                return "WPA_WPA2";
            }
            return "PSK";
        } else if (security == SECURITY_EAP) {
            return "EAP";
        }
        return "NONE";
    }
}


AccessPoint的整個類我沒有貼完整，這個就是wifi的每項的詳細資訊都在這個類裡面，大家有興趣可以去看看