android - 连接到开放式 WiFi

Question

我使用下面的代码连接到加密网络。但是，如果网络不安全并且我将 key 留空(“”)那么它就会失败。有谁知道如何解决这个问题？此外，是否可以使用 ssid/bssid 检测网络是否打开？还是我必须使用过滤器进行扫描？

public void connectToSSID(final String ssid, final String key) {
    Log.i("wifimaster", "connection to "+ssid);

    WifiConfiguration wc = new WifiConfiguration();
    wc.SSID = "\""+ssid+"\""; //IMPORTANT! This should be in Quotes!!  
    wc.priority = 40;
    wc.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE);
    wc.allowedProtocols.set(WifiConfiguration.Protocol.RSN); 
    wc.allowedProtocols.set(WifiConfiguration.Protocol.WPA);
    wc.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.OPEN);
    wc.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.SHARED);
    wc.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.CCMP);
    wc.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.TKIP);
    wc.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP40);
    wc.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP104);
    wc.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.OPEN);
    wc.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.WPA_PSK);
    wc.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.WPA_EAP);
    wc.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.TKIP);
    wc.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.CCMP);

    wc.preSharedKey = "\""+key+"\"";
    wc.wepKeys[0] = "\""+key+"\""; //This is the WEP Password
    wc.wepTxKeyIndex = 0;

    wc.preSharedKey = "\""+key+"\"";

    int res = wifiManager.addNetwork(wc);
    Log.d("WifiPreference", "add Network returned " + res );
    boolean es = wifiManager.saveConfiguration();
    Log.d("WifiPreference", "saveConfiguration returned " + es );
    boolean b = wifiManager.enableNetwork(res, true);   
    Log.d("WifiPreference", "enableNetwork returned " + b );

    if(b)
        Toast.makeText(c, c.getString(R.string.connected), Toast.LENGTH_SHORT).show();
    else
        Toast.makeText(c, c.getString(R.string.unconnected), Toast.LENGTH_SHORT).show();
}

Answer 1

使用

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

只有它会起作用。

删除对wc 的所有其他分配，没有必要将它们用于连接到网络的简单任务。您不是在创建网络，而是连接到一个现有网络。

如需完整解决方案，请查看此链接:How do I connect to a specific Wi-Fi network in Android programmatically?它拥有您需要知道的一切。