WebView android代理

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（将为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

没有合法的方法以编程方式更改webview代理设置。但是可以使用java反射来更改android.net.http.RequestQueue类中的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了它，它很有效。以下是我的方法示例：

    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;      
}

---

我已经做了很多测试，我可以说之前使用基于android.net.http.RequestQueue的覆盖的响应在android 1.6到3.1之间工作得非常好

但API上有一个代码重构，为了使其在Android 3.2和4.x上工作，解决方案如下：

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)
{    
}

---

享受

这是版本4.1和4.2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;
}

madeye的解决方案伪代码：

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

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

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");

---

我已经调整了这里介绍的三种解决方案（并修改了一种失败的解决方案），以生成一种简单的setProxy方法，该方法适用于所有版本的Android。我从10到18岁对它进行了测试，它适用于所有测试环境

更新2014-04-04在nubela和xjy2061的帮助下，我终于从下面的评论中找到了解决方案。现在这适用于所有当前的Android版本，包括KitKat 4.4。如果实现自己的应用程序子类，请提供类的名称作为可选的第四个参数

更新2015-01-15KitKat方法中标记为可选的部分在棒棒糖上引发异常，因为缺少辅助类，但如果没有辅助类，它在KitKat和棒棒糖上都有效，因为WebView在这两种情况下都基于铬

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;
}

publicstaticbooleansetproxy（WebView-WebView，stringhost，int-port，stringapplicationclassname=“android.app.Application”）{
//3.2（HC）或更低
如果（Build.VERSION.SDK_INT如@Karthik所说，这些答案在android 4.4（KitKat）上不起作用。
对于KitKat，答案已经发布。
首先，感谢大家为修复代理设置（android中不存在的公共api）而发布的代码，这对我也有很大帮助。我已经讨论了android a版本中的所有问题，看到它将需要更新此信息。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android.net.ProxyProperties不受支持，而方法updateProxy需要反射只需要通过java.lang.String输入参数。因此，我顺便更改了它的代码，希望它能帮助人们使用它我和你有同样的问题：

/**
 * 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;
    }
}

Chromium已开始在新版本中混淆类名（ProxyChangeListener的类名在最新版本中显示为“bMh”，并且可能在将来的版本中更改。因此，对于较新版本，Chromium的解决方案将不再有效，因为以下检查将始终失败：

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

我考虑的一个解决方案是在当前应用程序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，因为调用错误的接收器可能会产生不必要的副作用，人们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？）

根据前面的答案，可能是这样的：

// 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，这将非常有帮助

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applicationclassname的使用。
当api>=29时，它在android 7.1上运行良好：

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
    }
}

请将GetFieldValueSafety（requestQueueField，网络）的代码张贴出来好吗；问候Muthuvel.p感谢您的精彩代码！我将其添加到中，以便为所有感兴趣的Android开发人员提供一种简单快速的方法，在其应用程序中支持代理。再次感谢您！我尝试将这些代码放在loadURl之前。但它不起作用。我应该将这些代码放在何处，thz请检查下面的答案，如果您需要的话您正在使用11以上的android api。它应该在loadURlprivate字段之前工作：对象同步器=新对象（）；oauthPage您的代码片段中的内容是什么error@Rinkalkumar通过你的WebView对象的引用。谢谢。它只在4.0 ICS中工作。但不适用于JB和GB。嗨，我们可以使用这种方法添加代理身份验证吗？@Bear-我已经在很多设备上测试过，它工作得很好。你能告诉我它失败的地方吗？我有在这里发布我的问题谢谢大家嗨，我们可以在setProxyJB方法中添加代理身份验证吗？谢谢！你能告诉我如何恢复，这意味着清除proxy@mohitum007我建议，对于2.x，您可以读取通讯器代理文件，并在需要关闭代理时进行恢复。对于3.x和4.x，看起来代理仅为一个实例设置n WebView对象不是全系统的，是吗？这里有一个类似的片段，据说在KitKat/4.4上也可以使用：嗨，我们可以在setProxyJB方法中添加代理身份验证吗？谢谢！请为您的解决方案添加以下答案（对于API>19）：Guardian Project@Vlad中有一个库，我如何使用此项目在WebView中取消阻止我的url