android – 在为wifiiManager添加新的wifi配置时总是得到-1

2023年8月20日 169次阅读

我正在创建一个范围内的wifis列表并将其显示给用户.我希望用户可以选择列表中的每个项目并插入密码以连接到所选的SSID.

我为wifi连接写了这个方法：

    private WifiConfiguration wifiConf;             /* WifiConfiguration object */
    private WifiManager wifiMgr;                            /* WifiManager object */
    private WifiInfo wifiInfo;                              /* WifiInfo object */


        public boolean connectToSelectedNetwork(String networkSSID, String networkPassword, String securityType) {

    int networkId;
    int SecurityProtocol;

    if (securityType.contains("WEP")) {
      SecurityProtocol = 1;
      Log.i(TAG, "Security:  WEP");
    } else if (securityType.contains("WPA2")) {
      Log.i(TAG, "Security:  WPA2");
      SecurityProtocol = 2;
    } else if (securityType.contains("WPA")) {
      Log.i(TAG, "Security:  WPA");
      SecurityProtocol = 3;
    } else {
      Log.i(TAG, "Security:  OPEN");
      SecurityProtocol = 4;
    }


    // Clear wifi configuration variable
    clearWifiConfig();

    // Sets network SSID name on wifiConf
    wifiConf.SSID = "\"" + networkSSID + "\"";
    Log.i(TAG, "SSID Received: " + wifiConf.SSID);

    switch (SecurityProtocol) {

      // WEP "security".
      case WEP:
        wifiConf.wepKeys[0] = "\"" + networkPassword + "\"";
        wifiConf.wepTxKeyIndex = 0;
        wifiConf.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE);
        wifiConf.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP40);

        break;

      // WAP security. We have to set preSharedKey.
      case WPA2:
        wifiConf.preSharedKey = "\"" + networkPassword + "\"";
        wifiConf.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.OPEN);
        wifiConf.allowedProtocols.set(WifiConfiguration.Protocol.RSN); // For WPA2
        wifiConf.allowedProtocols.set(WifiConfiguration.Protocol.WPA); // For WPA
        wifiConf.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.WPA_PSK);
        wifiConf.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.WPA_EAP);
        wifiConf.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.TKIP);
        wifiConf.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.CCMP);
        wifiConf.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.TKIP);
        wifiConf.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.CCMP);

        break;

      case WPA:
        wifiConf.preSharedKey = "\"" + networkPassword + "\"";

      // Network without security.
      case OPEN_NETWORK:
        wifiConf.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE);
        break;
    }

    // Add WiFi configuration to list of recognizable networks
    if ((networkId = wifiMgr.addNetwork(wifiConf)) == -1) {
      Log.i("TAG", "Failed to add network configuration!");
      return false;
    }

    // Disconnect from current WiFi connection
    if (!disconnectFromWifi()) {
      Log.i("TAG", "Failed to disconnect from network!");
      return false;
    }

    // Enable network to be connected
    if (!wifiMgr.enableNetwork(networkId, true)) {
      Log.i("TAG", "Failed to enable network!");
      return false;
    }

    // Connect to network
    if (!wifiMgr.reconnect()) {
      Log.i("TAG", "Failed to connect!");
      return false;
    }

    return true;
  }

但是,当我调用此功能以连接到选定的wifi时,我总是得到假！我调试了很多次,如果在这种方法中它进入第一,并且没有连接到wifi.

请帮我解答你的问题.
谢谢.

最佳答案 addNetwork()失败时返回-1.

它失败的一个常见原因是网络先前由用户(通过wifi设置屏幕)或通过具有不同Unix用户ID(即UID)的应用程序以编程方式配置.回想一下,每个应用都与UID相关联.

如果相同的UID第二次调用addNetwork(),则允许覆盖配置并且该函数将成功.

类似的相关行为是关于通过removeNetwork()API删除配置.只有具有添加配置的UID的应用才能将其删除.

这种行为是有道理的,因为您不希望恶意(或只是错误的)应用程序覆盖或删除用户或其他应用程序完成的配置.

到目前为止一切都那么好,但是有一个复杂的问题 – 当重新安装应用程序时(读取：卸载然后重新安装),操作系统将为其提供不同的UID.现在,重新安装之后添加配置的相同应用程序无法再删除或更新它.哎哟!

允许相同的应用程序ID能够更新/删除网络会很不错.那好吧.

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