AndroidのWiFi接続をプログラム的に

Question

あなたのAndroidアプリケーションでパスワードを送信することで無線LAN接続を確立する方法はありますか？

Answer 1

SSIDとそのパスワードを以下の方法に渡します。

public void connectToAP(String ssid, String passkey) { 
    Log.i(TAG, "* connectToAP"); 

    WifiConfiguration wifiConfiguration = new WifiConfiguration(); 

    String networkSSID = ssid; 
    String networkPass = passkey; 

    Log.d(TAG, "# password " + networkPass); 

    for (ScanResult result : scanResultList) { 
     if (result.SSID.equals(networkSSID)) { 

      String securityMode = getScanResultSecurity(result); 

      if (securityMode.equalsIgnoreCase("OPEN")) { 

       wifiConfiguration.SSID = "\"" + networkSSID + "\""; 
       wifiConfiguration.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE); 
       int res = wifiManager.addNetwork(wifiConfiguration); 
       Log.d(TAG, "# add Network returned " + res); 

       boolean b = wifiManager.enableNetwork(res, true); 
       Log.d(TAG, "# enableNetwork returned " + b); 

       wifiManager.setWifiEnabled(true); 

      } else if (securityMode.equalsIgnoreCase("WEP")) { 

       wifiConfiguration.SSID = "\"" + networkSSID + "\""; 
       wifiConfiguration.wepKeys[0] = "\"" + networkPass + "\""; 
       wifiConfiguration.wepTxKeyIndex = 0; 
       wifiConfiguration.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE); 
       wifiConfiguration.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP40); 
       int res = wifiManager.addNetwork(wifiConfiguration); 
       Log.d(TAG, "### 1 ### add Network returned " + res); 

       boolean b = wifiManager.enableNetwork(res, true); 
       Log.d(TAG, "# enableNetwork returned " + b); 

       wifiManager.setWifiEnabled(true); 
      } 

      wifiConfiguration.SSID = "\"" + networkSSID + "\""; 
      wifiConfiguration.preSharedKey = "\"" + networkPass + "\""; 
      wifiConfiguration.hiddenSSID = true; 
      wifiConfiguration.status = WifiConfiguration.Status.ENABLED; 
      wifiConfiguration.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.TKIP); 
      wifiConfiguration.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.CCMP); 
      wifiConfiguration.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.WPA_PSK); 
      wifiConfiguration.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.TKIP); 
      wifiConfiguration.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.CCMP); 
      wifiConfiguration.allowedProtocols.set(WifiConfiguration.Protocol.RSN); 
      wifiConfiguration.allowedProtocols.set(WifiConfiguration.Protocol.WPA); 

      int res = wifiManager.addNetwork(wifiConfiguration); 
      Log.d(TAG, "### 2 ### add Network returned " + res); 

      wifiManager.enableNetwork(res, true); 

      boolean changeHappen = wifiManager.saveConfiguration(); 

      if(res != -1 && changeHappen){ 
       Log.d(TAG, "### Change happen"); 

       AppStaticVar.connectedSsidName = networkSSID; 

      }else{ 
       Log.d(TAG, "*** Change NOT happen"); 
      } 

      wifiManager.setWifiEnabled(true); 
     } 
    } 
} 

public String getScanResultSecurity(ScanResult scanResult) { 
    Log.i(TAG, "* getScanResultSecurity"); 

    final String cap = scanResult.capabilities; 
    final String[] securityModes = { "WEP", "PSK", "EAP" }; 

    for (int i = securityModes.length - 1; i >= 0; i--) { 
     if (cap.contains(securityModes[i])) { 
      return securityModes[i]; 
     } 
    } 

    return "OPEN"; 
} 

マニフェストファイルに必要な権限を追加することを忘れないでください。

Answer 2

AnujAroshAから投稿されたコードは本当に役に立ちます。しかし、他の場合がありません：

.. 
    } else if (securityMode.equalsIgnoreCase("PSK")) { 
    // PSK code 
    .. 

そうでなければ、PSKコードはWEPとOPENネットワークに対しても実行されます。

私の意見では、コードスタイルは最適ではありません。 2つのストリングnetworkSSIDとnetworkPassを作成する必要はありません。単にssidまたはpasskeyを使うことができます。

提案：Wi-Fi設定の作成と接続方法を分割します。

WifiConfigurationを作成する（1）方法：

private WifiConfiguration createAPConfiguration(String networkSSID, String networkPasskey, String securityMode) { 
     WifiConfiguration wifiConfiguration = new WifiConfiguration(); 

     wifiConfiguration.SSID = "\"" + networkSSID + "\""; 

     if (securityMode.equalsIgnoreCase("OPEN")) { 

      wifiConfiguration.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE); 

     } else if (securityMode.equalsIgnoreCase("WEP")) { 

      wifiConfiguration.wepKeys[0] = "\"" + networkPasskey + "\""; 
      wifiConfiguration.wepTxKeyIndex = 0; 
      wifiConfiguration.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE); 
      wifiConfiguration.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP40); 

     } else if (securityMode.equalsIgnoreCase("PSK")) { 

      wifiConfiguration.preSharedKey = "\"" + networkPasskey + "\""; 
      wifiConfiguration.hiddenSSID = true; 
      wifiConfiguration.status = WifiConfiguration.Status.ENABLED; 
      wifiConfiguration.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.TKIP); 
      wifiConfiguration.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.CCMP); 
      wifiConfiguration.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.WPA_PSK); 
      wifiConfiguration.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.TKIP); 
      wifiConfiguration.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.CCMP); 
      wifiConfiguration.allowedProtocols.set(WifiConfiguration.Protocol.RSN); 
      wifiConfiguration.allowedProtocols.set(WifiConfiguration.Protocol.WPA); 

     } else { 
      Log.i(TAG, "# Unsupported security mode: "+securityMode); 

      return null; 
     } 

     return wifiConfiguration; 

    } 

（2）AP方法は、接続：

public int connectToAP(String networkSSID, String networkPasskey) { 
    for (ScanResult result : scanResultList) { 

     if (result.SSID.equals(networkSSID)) { 

      String securityMode = getScanResultSecurity(result); 

      WifiConfiguration wifiConfiguration = createAPConfiguration(networkSSID, networkPasskey, securityMode); 

      int res = wifiManager.addNetwork(wifiConfiguration); 
      Log.d(TAG, "# addNetwork returned " + res); 

      boolean b = wifiManager.enableNetwork(res, true); 
      Log.d(TAG, "# enableNetwork returned " + b); 

      wifiManager.setWifiEnabled(true); 

      boolean changeHappen = wifiManager.saveConfiguration(); 

      if (res != -1 && changeHappen) { 
       Log.d(TAG, "# Change happen"); 
       connectedSsidName = networkSSID; 
      } else { 
       Log.d(TAG, "# Change NOT happen"); 
      } 

      return res; 
     } 
    } 

    return -1; 
} 

を（3）スキャン方法100％投稿AnujAroshAとして。

public String getScanResultSecurity(ScanResult scanResult) { 

    final String cap = scanResult.capabilities; 
    final String[] securityModes = { "WEP", "PSK", "EAP" }; 

    for (int i = securityModes.length - 1; i >= 0; i--) { 
     if (cap.contains(securityModes[i])) { 
      return securityModes[i]; 
     } 
    } 

    return "OPEN"; 
} 

Answer 3

100％Works。あなたが特定のWIF にMainActivity.java

//////////////のためのこのコードを接続することができます。この方法により、

>>> WiFi接続（WP2）< < < ////////////////

 WifiConfiguration wifiConfig = new WifiConfiguration(); 

     wifiConfig.SSID = String.format("\"%s\"", "Wifi name"); 
     wifiConfig.preSharedKey = String.format("\"%s\"", "Wifi password"); 

     WifiManager wifiManager=(WifiManager)getSystemService(WIFI_SERVICE); 
     int netId = wifiManager.addNetwork(wifiConfig); 
     wifiManager.disconnect(); 
     wifiManager.enableNetwork(netId, true); 
     wifiManager.reconnect(); 

そしてまた、このコードはコンパイルされません

<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" /> 
<uses-permission android:name="android.permission.CHANGE_WIFI_STATE" /> 
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /> 
<uses-permission android:name="android.permission.INTERNET" />