android - WebView height = wrap_content with changing font size doesn't work

Question

I have webview with layout_height = "wrap_content". If I increase default font size, then webview height increases too. But if I decrease default font size, then webview height doesn't decrease. So there is empty space on the bottom remaining.

I've tried following trick:

articleContent.getSettings().setDefaultFontSize(fontSize);
RelativeLayout.LayoutParams layoutParams = new LayoutParams(ViewGroup.LayoutParams.FILL_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
layoutParams.addRule(RelativeLayout.BELOW, subtitleTextView.getId());
articleContent.setLayoutParams(layoutParams);

But it didn't help. I know there is the way to fix it by recreating WebView with a code when I changing default font size, but in my situation I can not do like that. I need to keep webview, because there are some views bellow it, and I can not recreate them too.

Answer 1

The only solution I have found that actually works, is in the com.android.email client that comes with the Android Open Source Project. There, they have a RigidWebView which works with the wrap_content and will resize accordingly when the content changes. Source code for this can be found here:

https://android.googlesource.com/platform/packages/apps/Email/+/c19c1226da4a32e49e81c202478384f0348bcfef/src/com/android/email/view/RigidWebView.java

You'll need the Clock and Throttle classes that come with it, but with minor changes to the code, you can make it so it works in your app. Then anywhere where you would normally define a WebView, you can use RigidWebView instead.