38

我知道如何手动设置代理并在我的 WebView 中使用它。

设置->无线网络->移动网络->接入点名称->telkila。现在输入代理服务器地址和端口（将是 80）。WebView.enablePlatformNotifications();

但是我可以从代码中设置代理设置吗？所以我的用户不必手动设置？

谢谢

4

10 回答 10

34

我已经调整了这里介绍的三个解决方案（并修改了一个失败的解决方案）以生成一个适用于所有 Android 版本的单一、简单的 setProxy 方法。我已经从 10 到 18 对其进行了测试，它适用于所有测试环境。

更新于 2014 年 4 月 4 日，我终于在下面的评论中使用了解决方案，由 nubela 和 xjy2061 提供。现在这适用于所有当前的 Android 版本，包括 KitKat 4.4。如果您实现自己的 Application 子类，请提供类的名称作为可选的第四个参数。

2015 年 1 月 15 日更新 KitKat方法中标记为可选的部分在 Lollipop 上引发异常，因为缺少辅助类，但没有它，它在 KitKat 和 Lollipop 上都有效，因为在这两种情况下 WebView 都基于 Chromium。

public static boolean setProxy(WebView webview, String host, int port, String applicationClassName="android.app.Application") {
    // 3.2 (HC) or lower
    if (Build.VERSION.SDK_INT <= 13) {
        return setProxyUpToHC(webview, host, port);
    }
    // ICS: 4.0
    else if (Build.VERSION.SDK_INT <= 15) {
        return setProxyICS(webview, host, port);
    }
    // 4.1-4.3 (JB)
    else if (Build.VERSION.SDK_INT <= 18) {
        return setProxyJB(webview, host, port);
    }
    // 4.4 (KK) & 5.0 (Lollipop)
    else {
        return setProxyKKPlus(webview, host, port, applicationClassName);
    }
}

/**
 * Set Proxy for Android 3.2 and below.
 */
@SuppressWarnings("all")
private static boolean setProxyUpToHC(WebView webview, String host, int port) {
    Log.d(LOG_TAG, "Setting proxy with <= 3.2 API.");

    HttpHost proxyServer = new HttpHost(host, port);
    // Getting network
    Class networkClass = null;
    Object network = null;
    try {
        networkClass = Class.forName("android.webkit.Network");
        if (networkClass == null) {
            Log.e(LOG_TAG, "failed to get class for android.webkit.Network");
            return false;
        }
        Method getInstanceMethod = networkClass.getMethod("getInstance", Context.class);
        if (getInstanceMethod == null) {
            Log.e(LOG_TAG, "failed to get getInstance method");
        }
        network = getInstanceMethod.invoke(networkClass, new Object[]{webview.getContext()});
    } catch (Exception ex) {
        Log.e(LOG_TAG, "error getting network: " + ex);
        return false;
    }
    if (network == null) {
        Log.e(LOG_TAG, "error getting network: network is null");
        return false;
    }
    Object requestQueue = null;
    try {
        Field requestQueueField = networkClass
                .getDeclaredField("mRequestQueue");
        requestQueue = getFieldValueSafely(requestQueueField, network);
    } catch (Exception ex) {
        Log.e(LOG_TAG, "error getting field value");
        return false;
    }
    if (requestQueue == null) {
        Log.e(LOG_TAG, "Request queue is null");
        return false;
    }
    Field proxyHostField = null;
    try {
        Class requestQueueClass = Class.forName("android.net.http.RequestQueue");
        proxyHostField = requestQueueClass
                .getDeclaredField("mProxyHost");
    } catch (Exception ex) {
        Log.e(LOG_TAG, "error getting proxy host field");
        return false;
    }

    boolean temp = proxyHostField.isAccessible();
    try {
        proxyHostField.setAccessible(true);
        proxyHostField.set(requestQueue, proxyServer);
    } catch (Exception ex) {
        Log.e(LOG_TAG, "error setting proxy host");
    } finally {
        proxyHostField.setAccessible(temp);
    }

    Log.d(LOG_TAG, "Setting proxy with <= 3.2 API successful!");
    return true;
}

@SuppressWarnings("all")
private static boolean setProxyICS(WebView webview, String host, int port) {
    try
    {
        Log.d(LOG_TAG, "Setting proxy with 4.0 API.");

        Class jwcjb = Class.forName("android.webkit.JWebCoreJavaBridge");
        Class params[] = new Class[1];
        params[0] = Class.forName("android.net.ProxyProperties");
        Method updateProxyInstance = jwcjb.getDeclaredMethod("updateProxy", params);

        Class wv = Class.forName("android.webkit.WebView");
        Field mWebViewCoreField = wv.getDeclaredField("mWebViewCore");
        Object mWebViewCoreFieldInstance = getFieldValueSafely(mWebViewCoreField, webview);

        Class wvc = Class.forName("android.webkit.WebViewCore");
        Field mBrowserFrameField = wvc.getDeclaredField("mBrowserFrame");
        Object mBrowserFrame = getFieldValueSafely(mBrowserFrameField, mWebViewCoreFieldInstance);

        Class bf = Class.forName("android.webkit.BrowserFrame");
        Field sJavaBridgeField = bf.getDeclaredField("sJavaBridge");
        Object sJavaBridge = getFieldValueSafely(sJavaBridgeField, mBrowserFrame);

        Class ppclass = Class.forName("android.net.ProxyProperties");
        Class pparams[] = new Class[3];
        pparams[0] = String.class;
        pparams[1] = int.class;
        pparams[2] = String.class;
        Constructor ppcont = ppclass.getConstructor(pparams);

        updateProxyInstance.invoke(sJavaBridge, ppcont.newInstance(host, port, null));

        Log.d(LOG_TAG, "Setting proxy with 4.0 API successful!");
        return true;
    }
    catch (Exception ex)
    {
        Log.e(LOG_TAG, "failed to set HTTP proxy: " + ex);
        return false;
    }
}

/**
 * Set Proxy for Android 4.1 - 4.3.
 */
@SuppressWarnings("all")
private static boolean setProxyJB(WebView webview, String host, int port) {
    Log.d(LOG_TAG, "Setting proxy with 4.1 - 4.3 API.");

    try {
        Class wvcClass = Class.forName("android.webkit.WebViewClassic");
        Class wvParams[] = new Class[1];
        wvParams[0] = Class.forName("android.webkit.WebView");
        Method fromWebView = wvcClass.getDeclaredMethod("fromWebView", wvParams);
        Object webViewClassic = fromWebView.invoke(null, webview);

        Class wv = Class.forName("android.webkit.WebViewClassic");
        Field mWebViewCoreField = wv.getDeclaredField("mWebViewCore");
        Object mWebViewCoreFieldInstance = getFieldValueSafely(mWebViewCoreField, webViewClassic);

        Class wvc = Class.forName("android.webkit.WebViewCore");
        Field mBrowserFrameField = wvc.getDeclaredField("mBrowserFrame");
        Object mBrowserFrame = getFieldValueSafely(mBrowserFrameField, mWebViewCoreFieldInstance);

        Class bf = Class.forName("android.webkit.BrowserFrame");
        Field sJavaBridgeField = bf.getDeclaredField("sJavaBridge");
        Object sJavaBridge = getFieldValueSafely(sJavaBridgeField, mBrowserFrame);

        Class ppclass = Class.forName("android.net.ProxyProperties");
        Class pparams[] = new Class[3];
        pparams[0] = String.class;
        pparams[1] = int.class;
        pparams[2] = String.class;
        Constructor ppcont = ppclass.getConstructor(pparams);

        Class jwcjb = Class.forName("android.webkit.JWebCoreJavaBridge");
        Class params[] = new Class[1];
        params[0] = Class.forName("android.net.ProxyProperties");
        Method updateProxyInstance = jwcjb.getDeclaredMethod("updateProxy", params);

        updateProxyInstance.invoke(sJavaBridge, ppcont.newInstance(host, port, null));
    } catch (Exception ex) {
        Log.e(LOG_TAG,"Setting proxy with >= 4.1 API failed with error: " + ex.getMessage());
        return false;
    }

    Log.d(LOG_TAG, "Setting proxy with 4.1 - 4.3 API successful!");
    return true;
}

// from https://stackoverflow.com/questions/19979578/android-webview-set-proxy-programatically-kitkat
@SuppressLint("NewApi")
@SuppressWarnings("all")
private static boolean setProxyKKPlus(WebView webView, String host, int port, String applicationClassName) {
    Log.d(LOG_TAG, "Setting proxy with >= 4.4 API.");

    Context appContext = webView.getContext().getApplicationContext();
    System.setProperty("http.proxyHost", host);
    System.setProperty("http.proxyPort", port + "");
    System.setProperty("https.proxyHost", host);
    System.setProperty("https.proxyPort", port + "");
    try {
        Class applictionCls = Class.forName(applicationClassName);
        Field loadedApkField = applictionCls.getField("mLoadedApk");
        loadedApkField.setAccessible(true);
        Object loadedApk = loadedApkField.get(appContext);
        Class loadedApkCls = Class.forName("android.app.LoadedApk");
        Field receiversField = loadedApkCls.getDeclaredField("mReceivers");
        receiversField.setAccessible(true);
        ArrayMap receivers = (ArrayMap) receiversField.get(loadedApk);
        for (Object receiverMap : receivers.values()) {
            for (Object rec : ((ArrayMap) receiverMap).keySet()) {
                Class clazz = rec.getClass();
                if (clazz.getName().contains("ProxyChangeListener")) {
                    Method onReceiveMethod = clazz.getDeclaredMethod("onReceive", Context.class, Intent.class);
                    Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION);

                    onReceiveMethod.invoke(rec, appContext, intent);
                }
            }
        }

        Log.d(LOG_TAG, "Setting proxy with >= 4.4 API successful!");
        return true;
    } catch (ClassNotFoundException e) {
        StringWriter sw = new StringWriter();
        e.printStackTrace(new PrintWriter(sw));
        String exceptionAsString = sw.toString();
        Log.v(LOG_TAG, e.getMessage());
        Log.v(LOG_TAG, exceptionAsString);
    } catch (NoSuchFieldException e) {
        StringWriter sw = new StringWriter();
        e.printStackTrace(new PrintWriter(sw));
        String exceptionAsString = sw.toString();
        Log.v(LOG_TAG, e.getMessage());
        Log.v(LOG_TAG, exceptionAsString);
    } catch (IllegalAccessException e) {
        StringWriter sw = new StringWriter();
        e.printStackTrace(new PrintWriter(sw));
        String exceptionAsString = sw.toString();
        Log.v(LOG_TAG, e.getMessage());
        Log.v(LOG_TAG, exceptionAsString);
    } catch (IllegalArgumentException e) {
        StringWriter sw = new StringWriter();
        e.printStackTrace(new PrintWriter(sw));
        String exceptionAsString = sw.toString();
        Log.v(LOG_TAG, e.getMessage());
        Log.v(LOG_TAG, exceptionAsString);
    } catch (NoSuchMethodException e) {
        StringWriter sw = new StringWriter();
        e.printStackTrace(new PrintWriter(sw));
        String exceptionAsString = sw.toString();
        Log.v(LOG_TAG, e.getMessage());
        Log.v(LOG_TAG, exceptionAsString);
    } catch (InvocationTargetException e) {
        StringWriter sw = new StringWriter();
        e.printStackTrace(new PrintWriter(sw));
        String exceptionAsString = sw.toString();
        Log.v(LOG_TAG, e.getMessage());
        Log.v(LOG_TAG, exceptionAsString);
    } 
    return false;
}

private static Object getFieldValueSafely(Field field, Object classInstance) throws IllegalArgumentException, IllegalAccessException {
    boolean oldAccessibleValue = field.isAccessible();
    field.setAccessible(true);
    Object result = field.get(classInstance);
    field.setAccessible(oldAccessibleValue);
    return result;
}
于 2013-08-26T21:33:11.747 回答
25

没有合法的方式以编程方式更改您的 webview 代理设置。但是可以使用 java 反射从 android.net.http.RequestQueue 类中更改 mProxyHost 值。它是私有值，没有设置器，因此反射似乎是唯一可能的变体。我在我的项目中使用它并且它有效。这是我的方法的示例：

    private boolean setProxyHostField(HttpHost proxyServer) {
    // Getting network      
    Class networkClass = null;
    Object network = null;
    try {
        networkClass = Class.forName("android.webkit.Network");
        Field networkField = networkClass.getDeclaredField("sNetwork");
        network = getFieldValueSafely(networkField, null);
    } catch (Exception ex) {
        Log.e(ProxyManager.class.getName(), "error getting network");
        return false;
    }
    if (network == null) {
        Log.e(ProxyManager.class.getName(), "error getting network : null");
        return false;
    }
    Object requestQueue = null;
    try {
        Field requestQueueField = networkClass
                .getDeclaredField("mRequestQueue");
        requestQueue = getFieldValueSafely(requestQueueField, network);
    } catch (Exception ex) {
        Log.e(ProxyManager.class.getName(), "error getting field value");
        return false;
    }
    if (requestQueue == null) {
        Log.e(ProxyManager.class.getName(), "Request queue is null");
        return false;
    }
    Field proxyHostField = null;
    try {
        Class requestQueueClass = Class.forName("android.net.http.RequestQueue");
        proxyHostField = requestQueueClass
                .getDeclaredField("mProxyHost");
    } catch (Exception ex) {
        Log.e(ProxyManager.class.getName(), "error getting proxy host field");
        return false;
    }       
    synchronized (synchronizer) {
        boolean temp = proxyHostField.isAccessible();
        try {
            proxyHostField.setAccessible(true);
            proxyHostField.set(requestQueue, proxyServer);
        } catch (Exception ex) {
            Log.e(ProxyManager.class.getName(), "error setting proxy host");
        } finally {
            proxyHostField.setAccessible(temp);
        }
    }
    return true;
}

private Object getFieldValueSafely(Field field, Object classInstance) throws IllegalArgumentException, IllegalAccessException {
    boolean oldAccessibleValue = field.isAccessible();
    field.setAccessible(true);
    Object result = field.get(classInstance);
    field.setAccessible(oldAccessibleValue);
    return result;      
}
于 2011-04-19T15:57:07.743 回答
9

我已经做了很多测试，我可以说之前使用基于android.net.http.RequestQueue的覆盖的响应从 android 1.6 到 3.1 完美运行。

但是对 API 进行了代码重构并使其在 Android 3.2 和 4.x 上运行，这里的解决方案是：

try
{
  Class jwcjb = Class.forName("android.webkit.JWebCoreJavaBridge");
  Class params[] = new Class[1];
  params[0] = Class.forName("android.net.ProxyProperties");
  Method updateProxyInstance = jwcjb.getDeclaredMethod("updateProxy", params);

  Class wv = Class.forName("android.webkit.WebView");
  Field mWebViewCoreField = wv.getDeclaredField("mWebViewCore");
  Object mWebViewCoreFieldIntance = getFieldValueSafely(mWebViewCoreField, oauthPage);

  Class wvc = Class.forName("android.webkit.WebViewCore");
  Field mBrowserFrameField = wvc.getDeclaredField("mBrowserFrame");
  Object mBrowserFrame = getFieldValueSafely(mBrowserFrameField, mWebViewCoreFieldIntance);

  Class bf = Class.forName("android.webkit.BrowserFrame");
  Field sJavaBridgeField = bf.getDeclaredField("sJavaBridge");
  Object sJavaBridge = getFieldValueSafely(sJavaBridgeField, mBrowserFrame);

  Class ppclass = Class.forName("android.net.ProxyProperties");
  Class pparams[] = new Class[3];
  pparams[0] = String.class;
  pparams[1] = int.class;
  pparams[2] = String.class;
  Constructor ppcont = ppclass.getConstructor(pparams);

  updateProxyInstance.invoke(sJavaBridge, ppcont.newInstance("my.proxy.com", 1234, null)); 
}
catch (Exception ex)
{    
}

请享用

于 2012-04-16T14:52:01.307 回答
3

正如@Karthik 所说，这些答案不适用于android 4.4（KitKat）。对于 KitKat，答案已发布在这里。

于 2013-12-29T11:24:42.613 回答
1

这是 4.1 和 4.2 版本的代码 -

/**
 * Set Proxy for Android 4.1 and above.
 */
public static boolean setProxyICSPlus(WebView webview, String host, int port, String exclusionList) {

    Log.d("", "Setting proxy with >= 4.1 API.");

    try {

        Class wvcClass = Class.forName("android.webkit.WebViewClassic");
        Class wvParams[] = new Class[1];
        wvParams[0] = Class.forName("android.webkit.WebView");
        Method fromWebView = wvcClass.getDeclaredMethod("fromWebView", wvParams);           
        Object webViewClassic = fromWebView.invoke(null, webview);      

        Class wv = Class.forName("android.webkit.WebViewClassic");
        Field mWebViewCoreField = wv.getDeclaredField("mWebViewCore");
        Object mWebViewCoreFieldIntance = getFieldValueSafely(mWebViewCoreField, webViewClassic);

        Class wvc = Class.forName("android.webkit.WebViewCore");
        Field mBrowserFrameField = wvc.getDeclaredField("mBrowserFrame");
        Object mBrowserFrame = getFieldValueSafely(mBrowserFrameField, mWebViewCoreFieldIntance);

        Class bf = Class.forName("android.webkit.BrowserFrame");
        Field sJavaBridgeField = bf.getDeclaredField("sJavaBridge");
        Object sJavaBridge = getFieldValueSafely(sJavaBridgeField, mBrowserFrame);

        Class ppclass = Class.forName("android.net.ProxyProperties");
        Class pparams[] = new Class[3];
        pparams[0] = String.class;
        pparams[1] = int.class;
        pparams[2] = String.class;
        Constructor ppcont = ppclass.getConstructor(pparams);

        Class jwcjb = Class.forName("android.webkit.JWebCoreJavaBridge");
        Class params[] = new Class[1];
        params[0] = Class.forName("android.net.ProxyProperties");
        Method updateProxyInstance = jwcjb.getDeclaredMethod("updateProxy", params);

        updateProxyInstance.invoke(sJavaBridge, ppcont.newInstance(host, port, exclusionList));

    } catch (Exception ex) {
        Log.e("","Setting proxy with >= 4.1 API failed with error: " + ex.getMessage());
        return false;
    }

    Log.d("", "Setting proxy with >= 4.1 API successful!");
    return true;
}
于 2013-01-09T11:38:51.480 回答
1

Chromium 已开始在新版本中混淆类名（ ProxyChangeListener 的类名在最新版本中似乎是“bMh”，并且可能在未来版本中更改。因此Jimmy Dee的解决方案将不再适用于较新版本，因为以下检查总是会失败：

if (clazz.getName().contains("ProxyChangeListener"))

我想到的一个解决方案是在当前应用上下文中的所有广播接收器上调用 onReceive。

现在我明白这不是一个理想的解决方案，因为它可能会通过调用错误的接收器产生不必要的副作用，并且应该仔细检查应用程序上下文中的所有广播接收器，以确保它们不会做任何坏事。（还有其他想法吗？）

在前面的答案的基础上，它会是这样的：

// from https://stackoverflow.com/questions/19979578/android-webview-set-proxy-programatically-kitkat
@SuppressLint("NewApi")
@SuppressWarnings("all")
private static boolean setProxyKKPlus(WebView webView, String host, int port, String applicationClassName, Context appContext) {
    Log.d(LOG_TAG, "Setting proxy with >= 4.4 API.");

    Context appContext = webView.getContext().getApplicationContext();
    System.setProperty("http.proxyHost", host);
    System.setProperty("http.proxyPort", port + "");
    System.setProperty("https.proxyHost", host);
    System.setProperty("https.proxyPort", port + "");
    try {
        Class applictionCls = Class.forName(applicationClassName);
        Field loadedApkField = applictionCls.getField("mLoadedApk");
        loadedApkField.setAccessible(true);
        Object loadedApk = loadedApkField.get(appContext);
        Class loadedApkCls = Class.forName("android.app.LoadedApk");
        Field receiversField = loadedApkCls.getDeclaredField("mReceivers");
        receiversField.setAccessible(true);
        ArrayMap receivers = (ArrayMap) receiversField.get(loadedApk);
        ArrayMap contextReceivers = (ArrayMap) receivers.get(appContext);
        for (Object rec : contextReceivers.keySet()) {
            Class clazz = rec.getClass();

            Method onReceiveMethod = clazz.getDeclaredMethod("onReceive", Context.class, Intent.class);
            Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION);
            try {
                onReceiveMethod.invoke(rec, appContext, intent);
            } catch (Exception e) {
                // oops, couldn't invoke this receiver
            }
        }


        Log.d(LOG_TAG, "Setting proxy with >= 4.4 API successful!");
        return true;
    } catch (ClassNotFoundException e) {
        StringWriter sw = new StringWriter();
        e.printStackTrace(new PrintWriter(sw));
        String exceptionAsString = sw.toString();
        Log.v(LOG_TAG, e.getMessage());
        Log.v(LOG_TAG, exceptionAsString);
    } catch (NoSuchFieldException e) {
        StringWriter sw = new StringWriter();
        e.printStackTrace(new PrintWriter(sw));
        String exceptionAsString = sw.toString();
        Log.v(LOG_TAG, e.getMessage());
        Log.v(LOG_TAG, exceptionAsString);
    } catch (IllegalAccessException e) {
        StringWriter sw = new StringWriter();
        e.printStackTrace(new PrintWriter(sw));
        String exceptionAsString = sw.toString();
        Log.v(LOG_TAG, e.getMessage());
        Log.v(LOG_TAG, exceptionAsString);
    } catch (IllegalArgumentException e) {
        StringWriter sw = new StringWriter();
        e.printStackTrace(new PrintWriter(sw));
        String exceptionAsString = sw.toString();
        Log.v(LOG_TAG, e.getMessage());
        Log.v(LOG_TAG, exceptionAsString);
    } catch (NoSuchMethodException e) {
        StringWriter sw = new StringWriter();
        e.printStackTrace(new PrintWriter(sw));
        String exceptionAsString = sw.toString();
        Log.v(LOG_TAG, e.getMessage());
        Log.v(LOG_TAG, exceptionAsString);
    } catch (InvocationTargetException e) {
        StringWriter sw = new StringWriter();
        e.printStackTrace(new PrintWriter(sw));
        String exceptionAsString = sw.toString();
        Log.v(LOG_TAG, e.getMessage());
        Log.v(LOG_TAG, exceptionAsString);
    } 
    return false;
}

如果社区中有人有更好的想法，那将非常有帮助。

于 2018-06-20T06:24:48.037 回答
1 
Log.d(LOG_TAG, "Setting proxy with >= 4.4 API.");

Context appContext = webView.getContext().getApplicationContext();
System.setProperty("http.proxyHost", host);
System.setProperty("http.proxyPort", port + "");
System.setProperty("https.proxyHost", host);
System.setProperty("https.proxyPort", port + "");
try {
    Field loadedApkField = appContext.getClass().getField("mLoadedApk");
    loadedApkField.setAccessible(true);
    Object loadedApk = loadedApkField.get(appContext);
    Class loadedApkCls = Class.forName("android.app.LoadedApk");
    Field receiversField = loadedApkCls.getDeclaredField("mReceivers");
    receiversField.setAccessible(true);
    ArrayMap receivers = (ArrayMap) receiversField.get(loadedApk);
    for (Object receiverMap : receivers.values()) {
        for (Object rec : ((ArrayMap) receiverMap).keySet()) {
            Class clazz = rec.getClass();
            if (clazz.getName().contains("ProxyChangeListener")) {
                Method onReceiveMethod = clazz.getDeclaredMethod("onReceive", Context.class, Intent.class);
                Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION);

                onReceiveMethod.invoke(rec, appContext, intent);
            }
        }
    }

    Log.d(LOG_TAG, "Setting proxy with >= 4.4 API successful!");
    return true;

我删除了应用程序类名的使用。它在 android 7.1 上运行良好

于 2020-02-01T09:42:44.770 回答
1

当 api >= 29 时：

implementation 'androidx.webkit:webkit:1.4.0'

将此添加到 app/build.gradle，然后

private fun setProxy(host: String, port: Int) {
    if (WebViewFeature.isFeatureSupported(WebViewFeature.PROXY_OVERRIDE)) {
        val proxyUrl = "${host}:${port}"
        val proxyConfig: ProxyConfig = ProxyConfig.Builder()
            .addProxyRule(proxyUrl)
            .addDirect()//when proxy is not working, use direct connect, maybe?
            .build()
        ProxyController.getInstance().setProxyOverride(proxyConfig, object : Executor {
            override fun execute(command: Runnable) {

            }
        }, Runnable { Log.w(TAG, "WebView proxy") })
    } else {
        // use the solution of other anwsers
    }
}
于 2021-02-08T09:33:32.430 回答
0

madeye 的解决方案https://gist.github.com/madeye/2297083 伪代码：

android.webkit.Network.getInstance().mRequestQueue.mProxyHost=new HttpHost(host, port, "http")    //sdk < 14
android.webkit.WebViewCore.sendStaticMessage(new android.net.ProxyProperties(...))   //sdk >= 14

比小鸟的答案（WebView android proxy）伪代码要好：

android.webkit.Network.sNetwork.mRequestQueue.mProxyHost=new HttpHost(host, port, "http")    //sdk < 14

并且比 Guillaume13 和 MediumOne 的答案（WebView android proxy）伪代码更好：

android.webkit.JWebCoreJavaBridge.updateProxy(android.webkit.WebViewClassic.fromWebView(webview).mWebViewCore.mBrowserFrame.sJavaBridge, new android.net.ProxyProperties(...))   //sdk >= 14

但我不知道为什么只有当我在 setProxy 之前插入两行时代理才会成功：

webview1.loadUrl("http://0.0.0.0");
try {Thread.sleep(100);} catch (Exception e) {}
ProxySettings.setProxy(getApplicationContext(), "192.168.0.109", 8081);
webview1.loadUrl("http://www.google.com/index.php");
于 2013-07-13T10:36:43.347 回答
0

首先，感谢大家为修复代理设置的邮政编码，它不存在公共 api 到 android 的变化，它也帮助了我很多。我已经涵盖了所有版本的 android 中的问题，看到它需要更新此信息。取决于上面 Jimmy 的总结答案（谢谢！），我测试了它的代码在 android 版本 3.0 - 3.1 上运行不正确，因为不支持android.net.ProxyProperties并且方法updateProxy需要反射只有通过java.util. lang.String输入参数。所以，顺便改了下它的代码，希望能帮助遇到和我一样问题的人：

/**
 * Set Proxy from 3.0.x - to 3.1.x API.
 * @param webview webview webview to apply proxy
 * @param host host name of proxy server
 * @param port port of proxy server
 * @return true/false if success or not
 */
private static boolean setProxyOnlyHC30to31(WebView webview, String host, int port) {
    try
    {
        Logger.d(ProxySettings.class, "Setting proxy from 3.0.x - 3.1.x API.");

        Class jwcjb = Class.forName("android.webkit.JWebCoreJavaBridge");
        Class params[] = new Class[1];
        params[0] = Class.forName("java.lang.String");
        Method updateProxyInstance = jwcjb.getDeclaredMethod("updateProxy", params);

        Class wv = Class.forName("android.webkit.WebView");
        Field mWebViewCoreField = wv.getDeclaredField("mWebViewCore");
        Object mWebViewCoreFieldInstance = getFieldValueSafely(mWebViewCoreField, webview);

        Class wvc = Class.forName("android.webkit.WebViewCore");
        Field mBrowserFrameField = wvc.getDeclaredField("mBrowserFrame");
        Object mBrowserFrame = getFieldValueSafely(mBrowserFrameField, mWebViewCoreFieldInstance);

        Class bf = Class.forName("android.webkit.BrowserFrame");
        Field sJavaBridgeField = bf.getDeclaredField("sJavaBridge");
        Object sJavaBridge = getFieldValueSafely(sJavaBridgeField, mBrowserFrame);

        updateProxyInstance.invoke(sJavaBridge, "http://" + host + ":" + port);

        Logger.d(ProxySettings.class, "Setting proxy from 3.0.x - 3.1.x API successful!");
        return true;
    }
    catch (Exception ex)
    {
        if (Helper.DEBUG) Logger.e(ProxySettings.class, "failed to set HTTP proxy: " + ex);
        return false;
    }
}
于 2015-04-15T00:28:52.697 回答