Replace one fragment with an another fragment

Question

I want to replace an old Fragment with a new Fragment, but i still get the buttons of the old Fragment that is still visible in the ne

Answer 1

To understand the flow of fragment transition, first of all, you have to know about its structure in activity. Let's see: a) Activity: At bottom of everything (MainActivity)

activity_main.xml :-

Here @+id/container is the layout over we do transitions of fragment contents.

B) FragmentA : Initially added fragment to the container of MainActivity.

FragmentManager fm = getFragmentManager();
FragmentTransaction ft = fm.beginTransaction();
//Instance of fragment
Fragment newFragment = FragmentA.newInstance("a","b");
//It will replace the fragment content view to container of main activity
ft.replace(R.id.container, newFragment);
//FragmentA is added to back stack with it's name as a tag
ft.addToBackStack(FragmentA.class.getSimpleName());
ft.commitAllowingStateLoss();

B) FragmentB : Replace FragmentA with FragmentB

FragmentManager fm = getFragmentManager();
FragmentTransaction ft = fm.beginTransaction();
//Instance of fragment
Fragment newFragment = FragmentB.newInstance("a","b");
//It will replace the fragment content view to container of fragment A which     // is previously replaced to main activity container
ft.replace(R.id.container, newFragment);
//FragmentB is added to back stack with it's name as a tag
ft.addToBackStack(FragmentB.class.getSimpleName());
ft.commitAllowingStateLoss();

So main thing behind this is to replace/add fragment content view to the activity container view.