title: WebView slow on loading content
body: <p>I am doing a custom dialog plugin for PhoneGap in Android. The Notification plugin for PhoneGap cannot set text in HTML format in dialog boxes. So I decided to make my own using WebView. But I noticed that when the Alert.Dialog appears, the WebView is initially empty and then the content is loaded a split second later causing the dialog height to "jump". Even when I hardcode the content passed to loadData, the loading of content is still slow.</p>
  
  <p>Is there anything I'm missing?</p>
  
  <pre><code>@Override
  public PluginResult execute(String action, JSONArray args, String callbackId) {
      try {
          JSONObject jo = args.getJSONObject(0);
          showCustomDialog(jo.getString("title"), jo.getString("message"), jo.getString("buttonLabel")); 
          return new PluginResult(PluginResult.Status.OK);
      } catch (JSONException e) {
          return new PluginResult(PluginResult.Status.JSON_EXCEPTION);
      }
  }
  
  private void showCustomDialog(final String dialogTitle, final String dialogMessage, final String dialogButtonLabel) {           
  
      Runnable runnable = new Runnable() {
  
          public void run() {                         
              WebView webView = new WebView(ctx);
              webView.loadData(dialogMessage, "text/html", "UTF-8");
          webView.setBackgroundColor(Color.TRANSPARENT);
  
          AlertDialog.Builder alert = new AlertDialog.Builder(ctx);           
          alert.setView(view)
              .setCancelable(false)
              .setIcon(R.drawable.icon)
              .setTitle(dialogTitle)
              .setPositiveButton(dialogButtonLabel,
                      new DialogInterface.OnClickListener() {
                          public void onClick(DialogInterface dialog, int id) {
                              dialog.dismiss();
                          }
                      }
              )
              .show();
          }
      };
      this.ctx.runOnUiThread(runnable);
  }
  </code></pre>