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我遇到了无法将 URL 放入字符串生成器的问题。我在这里想要完成的只是获取页面的特定部分。这是我试图从中获取内容的网页：

http://www.google.com/finance/company_news?q=CURRENCY%3AUSD&ei=hYbQUcC3LJS80QHnDA

这是我只想在我的 WebView 中显示的网站部分：

http://oi44.tinypic.com/2ilnhwi.jpg

这是我的代码：

public class WebClient extends WebViewClient {

    @Override
    public boolean shouldOverrideUrlLoading(WebView view, String url) {
        view.loadUrl(url);
        return true;
    }
    @Override
    public void onPageFinished(WebView view, String url) {
        StringBuilder builder = new StringBuilder("");
        builder.append("javascript:document.getElementById('gb')    .style.visibility= 'hidden';");
        builder.append("document.getElementById('gb')    .style.display   = 'none'  ;");
        builder.append("document.getElementById('appbar').style.visibility= 'hidden';");
        builder.append("document.getElementById('appbar').style.display   = 'none'  ;");
        builder.append("document.getElementById('gf-nav').style.visibility= 'hidden';");
        builder.append("document.getElementById('gf-nav').style.display   = 'none'  ;");
        view.loadUrl(builder.toString());
    }
    }

private void AddListenerOnButton() {
    spinner = (Spinner) getView().findViewById(R.id.spinner);
    final WebView webView = (WebView) getView().findViewById(R.id.webView1);
    webView.getSettings().setJavaScriptEnabled(true);
    webView.getSettings().setRenderPriority(RenderPriority.HIGH);
    webView.getSettings().setCacheMode(WebSettings.LOAD_NO_CACHE);
    webView.getSettings().setDatabaseEnabled(true);
    webView.getSettings().setDomStorageEnabled(true);
    webView.getSettings().setAppCacheEnabled(true);
    webView.getSettings().setBuiltInZoomControls(true);

    spinner.setOnItemSelectedListener(new OnItemSelectedListener() {
        @Override
        public void onItemSelected(AdapterView<?> parentView, View selectedItemView, int position, long id) {
            String text1 = spinner.getSelectedItem().toString().trim();
            WebClient wc = new WebClient();
            if (text1.equals("US Dollar - USD")) {
                //webView.loadUrl("http://www.google.com/finance/company_news?q=CURRENCY%3AUSD&ei=hYbQUcC3LJS80QHnDA");
                wc.onPageFinished(webView, "http://www.google.com/finance/company_news?q=CURRENCY%3AUSD&ei=hYbQUcC3LJS80QHnDA");
                wc.shouldOverrideUrlLoading(webView, "http://www.google.com/finance/company_news?q=CURRENCY%3AUSD&ei=hYbQUcC3LJS80QHnDA");
            }
}

我已经尝试了一切，但整个网页仍在显示。我究竟做错了什么？是不是还有什么问题？任何帮助将不胜感激。

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1 回答 1

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我当前的代码被包装在一个完整的function()包装器中，效果很好，也许你可以试试：

builder.append("javascript:(function() {");
builder.append("document.getElementById('gb')    .style.visibility= 'hidden';");
builder.append("document.getElementById('gb')    .style.display   = 'none'  ;");
builder.append("document.getElementById('appbar').style.visibility= 'hidden';");
builder.append("document.getElementById('appbar').style.display   = 'none'  ;");
builder.append("document.getElementById('gf-nav').style.visibility= 'hidden';");
builder.append("document.getElementById('gf-nav').style.display   = 'none'  ;");
builder.append("})()");

编辑：忘记了末尾的几个括号(function(){})

于 2013-07-04T00:55:25.230 回答