This code is working from API 21
To enable the tint:
mWebView.loadUrl("https://www.google.com/");
Change the url, it also work for local file as well.
mWebView.loadUrl("file:///android_asset/index.html");
It works also to enable the caching for web view. Using LOAD_DEFAULT property, it works in offline mode also.
Author: Ahmed Faisal