 Since Android SDK is a little bit slow, I will demonstrate with Chrome. So this is what the app is done. Here we can see the list of groups over here. And we can select a single group. The feeds should be automatically loaded and displayed. We can put it to Android just using 4K. If you use a PHP or something like back-end, we can also set up a database and we can also perform the search and let us post and we can sort based on the category.