Android WebView Content Measuring

WebViewMeasuringActivity.java

public class WebViewMeasuringActivity extends RelativeLayout {

  public void loadHtml(String html)
    WebView webView = (WebView) findViewById(R.id.web_view);
    webView.getSettings().setJavaScriptEnabled(true);
    webView.addJavascriptInterface(new WebViewResizer(), "WebViewResizer");
    webView.setWebViewClient(new WebViewClient() {
      @Override
      public void onPageFinished(WebView webView, String url) {
        webView.loadUrl("javascript:window.WebViewResizer.processHeight(document.querySelector('body').offsetHeight);");
        super.onPageFinished(view, url);
      }
    });
    webView.loadData(html, mimeType, encoding);
  }
  
  private class WebViewResizer {
    @JavascriptInterface
    public void processHeight(String height) {
      // height is in DP units. Convert it to PX if you are adjusting the WebView's height.
      // height could be 0 if WebView visibility is Visibility.GONE.
      // If changing the WebView height, do it on the main thread!
    }
  }
}