Is it possible to block all websites except one website on an android programmatically?

Question

Is there any way of blocking websites pro grammatically on an Android device if user open any browser in his devise. actually my requirement is i have one website only that website will open in a browser, except that website if any website if user open that should not open(blocked) it shows some alert.please any one solve my problem.

Answer 1

Yes. I finally found a way to do it.

Download kiwi browser from play store.

With this browser you can add chrome extensions on Android.
Then, download the stayfocusd extension from the chrome store
Go to the extension settings, and you can use it to block any site you want (and allow some, of course).
But, instead of blocking all the sites you don't want one by one, I found a way to block ALL websites on the internet by adding ONE blocked site - https://.
After you've added https:// to your blocked sites list, simply add your site(s) that you want to allow in the Allowed sites list, and that's it!

P.S. there is also the Nuclear option in the extension settings that lets you block all sites except the allowed ones, but unfortunately this option doesn't work on android...

There is another browser know as yandex browser . where you can use the nuclear option. There is also Max time allowed option in this extension, so you can set how much time you want to use the blocked sites before the extension blocks them. Unfortunately you can't change the time to more than what it currently is after you set it on Android...