Adding child Fragment to Parent Fragment withing a ViewPager in Android

Question

I\'m developing an app that has some tabs,something like this

Each tab is a Fragment

Answer 1

If what you want is replace a fragment inside the viewpager with another fragment, take a look at this. However I would suggest you to create another Fragment (a container), and move your viewpager and fragments inside of this new fragment:

This way when the user clicks an item of a list, you can replace the MainFragment with a Details Fragment.

About the ChildFragmentManager(), it is used when you have nested fragments. If you change your implementation as I suggested, you would need to pass a ChildFragmentManager to your PagerAdapter:

viewPager.setAdapter(new AdapterView(getChildFragmentManager()));

Another thing about your commented lines of code inside VideosFragment. Make your activity commit the fragment transaction instead of doing it inside the Fragment. For a better explanation, read this.