Android - Change background color of body after url loads

Question

I need to change the background color of the body tag in some Html that gets loaded into a webview. I have already tried the answer located here. Here is the relevant code I have in onPageFinished():

String command = "javascript:document.body.style.background = \"transparent\";"; webView.loadUrl(command);

My WebView just ends up ditching the old Html that was originally loaded and displays "transparent" instead of changing the color like I want.

here is another location about similar problem. u may have a look: stackoverflow.com/questions/10867503/… — Umit Kaya
– Umit Kaya, Commented Jun 13, 2014 at 3:12

Christopher Perry · Accepted Answer · 2014-06-13 07:30:09Z

Changing the javascript to this is what works:

String javascript = "javascript:(function() { document.body.style.background='transparent'; })();";

if on KitKat+ you can do:

String javascript = "(function() { document.body.style.background='transparent'; })();"; webview.evaluateJavascript(javascript, null);

Community · Accepted Answer · 2017-05-23 11:53:18Z

call-a-function-after-complete-page-load

you can do this in javascript code, there is not need to do this in the android java code.

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