How to open or launch a Fragment from another Activity?

Question

from the adapter of a RecyclerView which is contained in an Activity, i\'m trying to launch a fragment when an element of the RecyclerView is pressed, this is my code right

Answer 1

You cannot start a Fragment with Intents so the method that I recommend to you is :

Fragment mFragment = null;
mFragment = new MainFragment();
FragmentManager fragmentManager = getSupportFragmentManager();
fragmentManager.beginTransaction().replace(R.id.frame_container, fragment).commit();

For more information see Fragments Transactions documents