this is nothing but a simple interface between two fragments. i am facing null pointer exception error on my TextView inside a Fragment, please help.here is my code. In the next chapter, we are going to use it and develop an Intro Application.I am new to Android Studio. Cool!! We had learnt about the Fragments. This is all about how the fragment come up within the activity and goes out.

onDetach() - This method called when the fragment is detached from its host activity.

onDestroy() - This method called when the fragment does its final clean up.

onDestroyView() - This method called when the view and related resources created in onCreateView() are removed from the activity’s view hierarchy and destroyed.

onStop() - This method called when the fragment is no longer visible the fragment will get change with other fragment or it gets removed from activity or fragment’s activity called stop.

onPause() - This method called when a fragment is not allowing the user to interact the fragment will get change with other fragment or it gets removed from activity or fragment’s activity called a pause.

Fragment resumes only after activity resumes.

onResume() - This method called when a fragment is visible and allowing the user to interact with it.onStart() - This method called when a fragment is visible.onActivit圜reated() - This method called when Activity completes its onCreate() method.

You can return null if the fragment does not provide a UI. To draw a UI for your fragment, you must return a View component from this method that is the root of your fragment’s layout.

onCreateView() - The method called when it’s time for the fragment to draw its user interface for the first time.

onCreate() - This method called when a fragment instance initializes, just after the onAttach where fragment attaches to the host activity.

We are passing the Activity that will host our fragment.

onAttach() - This method called first, To know that our fragment has been attached to an activity.

Android studio fragment