What methods can be used to transition between fragments in an application?

Transition between fragments in an Android application can be implemented in several ways:

1. Using FragmentManager and FragmentTransaction
   • Create an instance of the desired fragment.
   • Begin a transaction through FragmentManager.
   • Replace the current fragment using replace() or add a new one with add().
   • Call commit() to apply the changes.

val fragment = NewFragment()
supportFragmentManager.beginTransaction()
    .replace(R.id.fragment_container, fragment)
    .addToBackStack(null) // to enable back navigation
    .commit()

2. Navigation Component (Jetpack)
   • Uses a Navigation Graph where all fragments and transitions are defined.
   • Transitions are performed via NavController.

findNavController().navigate(R.id.action_currentFragment_to_newFragment)

3. Using ViewPager or ViewPager2

   • For swiping between fragments.
   • Suitable for tabs or carousels.

4. Via interfaces and callbacks

   • Fragment notifies the activity about the need to change the fragment, and the activity performs the transaction.

The main methods are FragmentManager with transactions and the Navigation Component, which simplifies navigation and fragment stack management.