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android 自動連線WiFi

很久沒有寫部落格了,今天記錄下做專案中發現的問題,關於自動連線WiFi問題,本來在網上找了許多,發現測試下來不太好用,於是找了找原因,再次記錄一下。

先說工具類吧,包含了許多,網上也能找到類似的

public class WifiAdmin {
    // 定義WifiManager物件
    private WifiManager mWifiManager;
    // 定義WifiInfo物件
    private WifiInfo mWifiInfo;
    // 掃描出的網路連線列表
    private List<ScanResult> mWifiList;
    // 網路連線列表
    private List<WifiConfiguration> mWifiConfiguration;
    // 定義一個WifiLock
    WifiManager.WifiLock mWifiLock;

    public WifiManager getmWifiManager() {
        return mWifiManager;
    }

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

    // 構造器
    public WifiAdmin(Context context) {
        // 取得WifiManager物件
        mWifiManager = (WifiManager) context
                .getSystemService(Context.WIFI_SERVICE);
        // 取得WifiInfo物件
        mWifiInfo = mWifiManager.getConnectionInfo();
    }

    // 開啟WIFI
    public void openWifi() {
        if (!mWifiManager.isWifiEnabled()) {
            mWifiManager.setWifiEnabled(true);
        }
    }

    // 關閉WIFI
    public void closeWifi() {
        if (mWifiManager.isWifiEnabled()) {
            mWifiManager.setWifiEnabled(false);
        }
    }

    // 檢查當前WIFI狀態
    public int checkState() {
        return mWifiManager.getWifiState();
    }

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

    // 解鎖WifiLock
    public void releaseWifiLock() {
        // 判斷時候鎖定
        if (mWifiLock.isHeld()) {
            mWifiLock.acquire();
        }
    }

    // 建立一個WifiLock
    public void creatWifiLock() {
        mWifiLock = mWifiManager.createWifiLock("Test");
    }

    // 得到配置好的網路
    public List getConfiguration() {
        return mWifiConfiguration;
    }

    // 指定配置好的網路進行連線
    public void connectConfiguration(int index) {
        // 索引大於配置好的網路索引返回
        if (index > mWifiConfiguration.size()) {
            return;
        }
        // 連線配置好的指定ID的網路
        mWifiManager.enableNetwork(mWifiConfiguration.get(index).networkId,
                true);
    }

    public void startScan() {
        mWifiManager.startScan();
        // 得到掃描結果
        mWifiList = mWifiManager.getScanResults();
        // 得到配置好的網路連線
        mWifiConfiguration = mWifiManager.getConfiguredNetworks();
    }

    // 得到網路列表
    public List getWifiList() {
        return mWifiManager.getScanResults();
    }

    // 檢視掃描結果
    public StringBuilder lookUpScan() {
        StringBuilder stringBuilder = new StringBuilder();
        for (int i = 0; i < mWifiList.size(); i++) {
            stringBuilder
                    .append("Index_" + new Integer(i + 1).toString() + ":");
            // 將ScanResult資訊轉換成一個字串包
            // 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();
    }

    // 得到接入點的BSSID
    public String getBSSID() {
        return (mWifiInfo == null) ? "NULL" : mWifiInfo.getBSSID();
    }

    // 得到IP地址
    public int getIPAddress() {
        return (mWifiInfo == null) ? 0 : mWifiInfo.getIpAddress();
    }

    // 得到連線的ID
    public int getNetworkId() {
        return (mWifiInfo == null) ? 0 : mWifiInfo.getNetworkId();
    }

    // 得到WifiInfo的所有資訊包
    public String getWifiInfo() {
        return (mWifiInfo == null) ? "NULL" : mWifiInfo.toString();
    }

    // 新增一個網路並連線
    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);
    }

    // 斷開指定ID的網路
    public void disconnectWifi(int netId) {
        mWifiManager.disableNetwork(netId);
        mWifiManager.disconnect();

    }


    //然後是一個實際應用方法,只驗證過沒有密碼的情況:


    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); 這裡需要注意下有的文章是註釋掉的這一句話,這是不可以的,找了半天才發現原因
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<ScanResult> 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<WifiConfiguration> 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(); } 這個大部分和網上的還是一致的,這裡記錄下。

接下來是使用

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

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

這裡一定要加獲取wifi和改變wifi的許可權!!!!!!!!!

寫到這裡差不多就要結束了,本來開開心心的去試驗,發現在6.0之前的版本是可以的,6.0之後的版本是不可以的,找了一下發現是6.0之後獲取wifi的列表,需要獲取地理位置,進而才能獲取到周圍的WiFi的列表.這裡需要加申請地址位置許可權,這裡就不太多闡述了。

最後一定要加上獲取地理位置許可權