What approaches exist for passing information between screens in an application?

In Android, the following approaches are used for passing information between screens (Activity, Fragment):

• Intent with Extras — the most common way to pass data between Activities. You can put primitive types, Serializable, Parcelable objects into an Intent.

Intent intent = new Intent(CurrentActivity.this, NextActivity.class);
intent.putExtra("key", "value");
startActivity(intent);

• Bundle — used for passing data between Fragments or when saving state.

• ViewModel and SharedViewModel — for sharing data between fragments within the same Activity through a common ViewModel.

• Singleton or global classes — for storing data accessible from different parts of the application (not recommended due to state management issues).

• Architectural components (LiveData, StateFlow) — for reactive data exchange.

• Third-party libraries (EventBus, RxJava) — for passing events and data between components.

The choice of approach depends on the application's architecture and the volume of data being transferred.