如何使用 Java 在 Android Wi-Fi 连接上设置 ProxySettings 和 ProxyProperties？

如何使用 Java（以编程方式）在 Android Wi-Fi 连接上设置 ProxySettings 和 ProxyProperties？

由于 ipAssignment、linkProperties、ProxySettings 和 ProxyProperties 是 Android 3.1 及更高版本上 WifiConfiguration 中的隐藏字段，因此我需要能够枚举该类并使用这些字段。

按照使用下面链接的代码示例，我可以为特定 Wi-Fi 连接设置静态 IP 地址、网关和 DNS，但我还需要设置 Wificonfiguration.ProxySettings.STATIC 和 ProxyProperties

请参阅堆栈溢出问题如何在 Android 3.x 或 4.x 上以编程方式配置静态 IP 地址、网络掩码、网关 https://stackoverflow.com/questions/10278461.

例如，

WifiConfiguration config = new WifiConfiguration(configuration);
config.ipAssignment = WifiConfiguration.IpAssignment.UNASSIGNED;
config.proxySettings = WifiConfiguration.ProxySettings.STATIC;
config.linkProperties.setHttpProxy(new ProxyProperties("127.0.0.1", 3128, ""));

寻找类似的东西：

setProxySettings("STATIC", wifiConf);
setProxyProperties("proxyserver.mine.com.au", 8080, ""); // Set Proxy server and port.
wifiManager.updateNetwork(wifiConf); //apply the setting

使用来自 Coolypf .ipAssignment .ProxySettings 的以下代码，并且 linkProperties 被隐藏...

    WifiManager manager = (WifiManager)getSystemService(Context.WIFI_SERVICE);
manager.asyncConnect(this, new Handler());
if (!manager.isWifiEnabled()) return;
    List<WifiConfiguration> configurationList = manager.getConfiguredNetworks();
    WifiConfiguration configuration = null;
    int cur = manager.getConnectionInfo().getNetworkId();
    for (int i = 0; i < configurationList.size(); ++i)
    {
        WifiConfiguration wifiConfiguration = configurationList.get(i);
        if (wifiConfiguration.networkId == cur)
        configuration = wifiConfiguration;
    }
    if (configuration == null) return;
    WifiConfiguration config = new WifiConfiguration(configuration);
    config.ipAssignment = WifiConfiguration.IpAssignment.UNASSIGNED;
    config.proxySettings = WifiConfiguration.ProxySettings.STATIC;

    config.linkProperties.clear();

    config.linkProperties.setHttpProxy(new ProxyProperties("127.0.0.1", 3128, ""));

    manager.saveNetwork(config);

下面是一些允许您设置/取消设置 ProxyProperties 的代码。它使用上面链接中的一些相同代码。这些设置似乎不会在断开/重新连接时生效。

public static Object getField(Object obj, String name)
throws SecurityException, NoSuchFieldException, IllegalArgumentException, IllegalAccessException{
    Field f = obj.getClass().getField(name);
    Object out = f.get(obj);
    return out;
}

public static Object getDeclaredField(Object obj, String name)
throws SecurityException, NoSuchFieldException,
IllegalArgumentException, IllegalAccessException {
    Field f = obj.getClass().getDeclaredField(name);
    f.setAccessible(true);
    Object out = f.get(obj);
    return out;
}  

public static void setEnumField(Object obj, String value, String name)
throws SecurityException, NoSuchFieldException, IllegalArgumentException, IllegalAccessException{
    Field f = obj.getClass().getField(name);
    f.set(obj, Enum.valueOf((Class<Enum>) f.getType(), value));
}

public static void setProxySettings(String assign , WifiConfiguration wifiConf)
throws SecurityException, IllegalArgumentException, NoSuchFieldException, IllegalAccessException{
    setEnumField(wifiConf, assign, "proxySettings");     
}


WifiConfiguration GetCurrentWifiConfiguration(WifiManager manager)
{
    if (!manager.isWifiEnabled()) 
        return null;

    List<WifiConfiguration> configurationList = manager.getConfiguredNetworks();
    WifiConfiguration configuration = null;
    int cur = manager.getConnectionInfo().getNetworkId();
    for (int i = 0; i < configurationList.size(); ++i)
    {
        WifiConfiguration wifiConfiguration = configurationList.get(i);
        if (wifiConfiguration.networkId == cur)
            configuration = wifiConfiguration;
    }

    return configuration;
}

void setWifiProxySettings()
{
    //get the current wifi configuration
    WifiManager manager = (WifiManager)getSystemService(Context.WIFI_SERVICE);
    WifiConfiguration config = GetCurrentWifiConfiguration(manager);
    if(null == config)
        return;

    try
    {
        //get the link properties from the wifi configuration
        Object linkProperties = getField(config, "linkProperties");
        if(null == linkProperties)
            return;

        //get the setHttpProxy method for LinkProperties
        Class proxyPropertiesClass = Class.forName("android.net.ProxyProperties");
        Class[] setHttpProxyParams = new Class[1];
        setHttpProxyParams[0] = proxyPropertiesClass;
        Class lpClass = Class.forName("android.net.LinkProperties");
        Method setHttpProxy = lpClass.getDeclaredMethod("setHttpProxy", setHttpProxyParams);
        setHttpProxy.setAccessible(true);

        //get ProxyProperties constructor
        Class[] proxyPropertiesCtorParamTypes = new Class[3];
        proxyPropertiesCtorParamTypes[0] = String.class;
        proxyPropertiesCtorParamTypes[1] = int.class;
        proxyPropertiesCtorParamTypes[2] = String.class;

        Constructor proxyPropertiesCtor = proxyPropertiesClass.getConstructor(proxyPropertiesCtorParamTypes);

        //create the parameters for the constructor
        Object[] proxyPropertiesCtorParams = new Object[3];
        proxyPropertiesCtorParams[0] = "127.0.0.1";
        proxyPropertiesCtorParams[1] = 8118;
        proxyPropertiesCtorParams[2] = null;

        //create a new object using the params
        Object proxySettings = proxyPropertiesCtor.newInstance(proxyPropertiesCtorParams);

        //pass the new object to setHttpProxy
        Object[] params = new Object[1];
        params[0] = proxySettings;
        setHttpProxy.invoke(linkProperties, params);

        setProxySettings("STATIC", config);

        //save the settings
        manager.updateNetwork(config);
        manager.disconnect();
        manager.reconnect();
    }   
    catch(Exception e)
    {
    }
}
void unsetWifiProxySettings()
{
    WifiManager manager = (WifiManager)getSystemService(Context.WIFI_SERVICE);
    WifiConfiguration config = GetCurrentWifiConfiguration(manager);
    if(null == config)
        return;

    try
    {
        //get the link properties from the wifi configuration
        Object linkProperties = getField(config, "linkProperties");
        if(null == linkProperties)
            return;

        //get the setHttpProxy method for LinkProperties
        Class proxyPropertiesClass = Class.forName("android.net.ProxyProperties");
        Class[] setHttpProxyParams = new Class[1];
        setHttpProxyParams[0] = proxyPropertiesClass;
        Class lpClass = Class.forName("android.net.LinkProperties");
        Method setHttpProxy = lpClass.getDeclaredMethod("setHttpProxy", setHttpProxyParams);
        setHttpProxy.setAccessible(true);

        //pass null as the proxy
        Object[] params = new Object[1];
        params[0] = null;
        setHttpProxy.invoke(linkProperties, params);

        setProxySettings("NONE", config);

        //save the config
        manager.updateNetwork(config);
        manager.disconnect();
        manager.reconnect();
    }   
    catch(Exception e)
    {
    }
}