解決webview內的iframe中的事件不可用的問題

更新時間：2020年03月25日 11:01:57 作者：GIS開發(fā)者

這篇文章主要介紹了解決webview內的iframe中的事件不可用的問題，具有很好的參考價值，希望對大家有所幫助。一起跟隨小編過來看看吧

最近做Android的Webview開發(fā)，使用iframe中嵌入了很多頁面，嵌入的頁面卻不可用，最后發(fā)現(xiàn)是

 webView.setWebViewClient(new WebViewClient() {
   @Override
   public boolean shouldOverrideUrlLoading(WebView view, String url) {
    return super.shouldOverrideUrlLoading(view, url);
   }

不要覆寫

shouldOverrideUrlLoading

這個方法，覆寫這個方法會攔截ifame中的事件。

補充知識：Android 原生WebView訪問使用iFrame網頁問題（頁面找不到了）

問題：

項目使用原生WebView訪問使用了iFrame的網頁出現(xiàn)的問題，列表頁使用iFrame跳轉到淘寶客的地址，單獨訪問淘寶客地址是能夠打開。但列表頁跳轉過去總是提示“頁面找不到了”，嘗試很多方法，最終發(fā)現(xiàn)是WebView對第三方Cookie支持的問題。

解決：

if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP)
CookieManager.getInstance().setAcceptThirdPartyCookies(mWebView, true);

完整配置：

  mWebView.setWebViewClient(new WebViewClient() {
   @Override
   public void onPageStarted(WebView view, String url, Bitmap favicon) {
    super.onPageStarted(view, url, favicon);
   }

   @Override
   public void onReceivedSslError(WebView view, SslErrorHandler handler, SslError error) {
    handler.proceed();
    super.onReceivedSslError(view, handler, error);
   }

   @Override
   public boolean shouldOverrideUrlLoading(WebView view, String url) { return super.shouldOverrideUrlLoading(view, url);
   }

   @TargetApi(Build.VERSION_CODES.LOLLIPOP)
   @Override
   public WebResourceResponse shouldInterceptRequest(WebView view, WebResourceRequest request) {
    return super.shouldInterceptRequest(view, request);
   }

   @Override
   public void onPageFinished(WebView view, String url) {
    super.onPageFinished(view, url);
    if (null != title && null != view && TextUtils.isEmpty(mTitle))
     title.setText(view.getTitle());
   }
  });
  mWebView.setWebChromeClient(new WebChromeClient() {
          @Override
          public void onProgressChanged(WebView webView, int i) {
           super.onProgressChanged(webView, i);
          }

          @Override
          public boolean onJsConfirm(WebView view, String url, String message, android.webkit.JsResult result) {
           return super.onJsConfirm(view, url, message, result);
          }

          @Override
          public void onShowCustomView(View view, CustomViewCallback callback) {
           super.onShowCustomView(view, callback);
          }

          @Override
          public void onHideCustomView() {
          }

          @Override
          public boolean onShowFileChooser(WebView webView, android.webkit.ValueCallback<Uri[]> filePathCallback, FileChooserParams fileChooserParams) {
           return super.onShowFileChooser(webView, filePathCallback, fileChooserParams);
          }

          @Override
          public boolean onJsAlert(WebView view, String url, String message, android.webkit.JsResult result) {
           return super.onJsAlert(view, url, message, result);
          }

          @Override
          public void onReceivedTitle(WebView view, String title) {
           super.onReceivedTitle(view, title);
          }
         }

  );

 WebSettings mWebSettings = mWebView.getSettings();

  mWebSettings.setAllowFileAccess(true);
  mWebSettings.setLayoutAlgorithm(WebSettings.LayoutAlgorithm.NARROW_COLUMNS);
  mWebSettings.setSupportZoom(true);
  mWebSettings.setBuiltInZoomControls(true);
  mWebSettings.setUseWideViewPort(true);
  mWebSettings.setSupportMultipleWindows(false);
  mWebSettings.setAppCacheEnabled(true);
  mWebSettings.setDomStorageEnabled(true);
  mWebSettings.setJavaScriptEnabled(true);
  mWebSettings.setGeolocationEnabled(true);
  mWebSettings.setAppCacheMaxSize(Long.MAX_VALUE);
  mWebSettings.setAppCachePath(getDir("appcache", 0).getPath());
  mWebSettings.setDatabasePath(getDir("databases", 0).getPath());
  mWebSettings.setGeolocationDatabasePath(getDir("geolocation", 0)
    .getPath());
  mWebSettings.setPluginState(WebSettings.PluginState.ON_DEMAND);
  mWebSettings.setLoadWithOverviewMode(true);
  mWebSettings.setCacheMode(WebSettings.LOAD_NO_CACHE);
  String mUserAgent = mWebSettings.getUserAgentString();
  mWebSettings.setUserAgentString(mUserAgent + " App/AppName");
  syncCookie();
  mWebSettings.setUseWideViewPort(true);
  mWebSettings.setLoadWithOverviewMode(true);
  if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
   mWebSettings.setCacheMode(WebSettings.LOAD_CACHE_ELSE_NETWORK);
  } else {
   mWebSettings.setCacheMode(WebSettings.LOAD_DEFAULT);
  }
  if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
   mWebSettings.setDisplayZoomControls(false);
  }
  if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
   mWebSettings.setLoadsImagesAutomatically(true);
  } else {
   mWebSettings.setLoadsImagesAutomatically(false);
  }
  if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
   mWebSettings.setMixedContentMode(WebSettings.MIXED_CONTENT_ALWAYS_ALLOW);
  }
  if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP)
   CookieManager.getInstance().setAcceptThirdPartyCookies(mWebView, true);

  mWebView.setScrollBarStyle(WebView.SCROLLBARS_INSIDE_OVERLAY);
  mWebView.setHorizontalScrollBarEnabled(false);
  mWebView.setHorizontalFadingEdgeEnabled(false);
  mWebView.setVerticalFadingEdgeEnabled(false);

  mWebView.requestFocus();
 private void syncCookie() {
  CookieSyncManager.createInstance(this);
  CookieManager cookieManager = CookieManager.getInstance();
  cookieManager.setAcceptCookie(true);
  CookieSyncManager.getInstance().sync();
 }

以上這篇解決webview內的iframe中的事件不可用的問題就是小編分享給大家的全部內容了，希望能給大家一個參考，也希望大家多多支持腳本之家。

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