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    <p>If I understand your problem correctly, it seems the issue is due to the MathJax library has not completed loading (from the <code>loadDataWithBaseURL()</code> call) when you call the additional <code>loadUrl()</code>s to display the formula. The simplest fix is to wait for the <code>onPageFinished()</code> callback to make the call.</p> <p>For example, the following code seems to work fine on mine:</p> <pre><code>/** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); final WebView w = (WebView) findViewById(R.id.webview); w.getSettings().setJavaScriptEnabled(true); w.getSettings().setBuiltInZoomControls(true); w.loadDataWithBaseURL("http://bar", "&lt;script type='text/x-mathjax-config'&gt;" + "MathJax.Hub.Config({ " + "showMathMenu: false, " + "jax: ['input/TeX','output/HTML-CSS'], " + "extensions: ['tex2jax.js'], " + "TeX: { extensions: ['AMSmath.js','AMSsymbols.js'," + "'noErrors.js','noUndefined.js'] } " + "});&lt;/script&gt;" + "&lt;script type='text/javascript' " + "src='file:///android_asset/MathJax/MathJax.js'" + "&gt;&lt;/script&gt;&lt;span id='math'&gt;&lt;/span&gt;", "text/html", "utf-8", ""); w.setWebViewClient(new WebViewClient() { @Override public void onPageFinished(WebView view, String url) { super.onPageFinished(view, url); if (!url.startsWith("http://bar")) return; w.loadUrl("javascript:document.getElementById('math').innerHTML='\\\\[" + doubleEscapeTeX("sample string") + "\\\\]';"); w.loadUrl("javascript:MathJax.Hub.Queue(['Typeset',MathJax.Hub]);"); } }); } </code></pre> <p><strong>Update</strong>: To accommodate additional output in the WebView, I would suggest adding HTML elements to the initial <code>loadDataWithBaseURL()</code> call. So for the example above, instead of this line at the end:</p> <pre><code> + "&gt;&lt;/script&gt;&lt;span id='math'&gt;&lt;/span&gt;", "text/html", "utf-8", ""); </code></pre> <p>We can do something like the following:</p> <pre><code> + "&gt;&lt;/script&gt;&lt;span id='text'&gt;Formula:&lt;/span&gt;" + "&lt;span id='math'&gt;&lt;/span&gt;", "text/html", "utf-8", ""); </code></pre> <p>Additionally, if you need to update that part interactively afterward, you can use the same mechanism that we used for the "math" part, something like:</p> <pre><code> w.loadUrl("javascript:document.getElementById('text').innerHTML='" + newText + "';"); </code></pre> <p>You can also use other HTML elements (instead of the <code>&lt;span&gt;</code> that we use above) if you want to have specific styling/formatting.</p>
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    1. COThis is one possible solution. I'll try that out and report back.
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    2. COIt shows. One last question: how do you put plain text into the same webview? For example, a sentence in default font, followed by formatted equation (inline or display)?
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    3. COGlad to help :) I updated my answer to add some suggestions on how to add the text output.
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