What methods are used for navigation between screens in Android applications?

Navigation between screens (Activity or Fragment) in Android applications can be done in several ways:

1. Using Intent to transition between Activities

   Intent intent = new Intent(CurrentActivity.this, NextActivity.class);
   startActivity(intent);
   

2. Navigation using FragmentManager to replace fragments within a single Activity

   FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
   transaction.replace(R.id.container, new NextFragment());
   transaction.addToBackStack(null);
   transaction.commit();
   

3. Navigation Component — a modern way of navigation that simplifies managing transitions and passing data between screens, using a navigation graph (nav_graph.xml).

4. Using third-party libraries — for example, Flow or others, but most often the standard tools are sufficient.

The choice of method depends on the application's architecture and navigation requirements.