What methods can be used to organize data exchange between two fragments in an application?
sobes.tech AI
Answer from AI
Data exchange between two fragments in Android can be organized in several ways:
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Via Activity — fragments communicate through a parent Activity, which acts as an intermediary. One fragment passes data to the Activity, and the Activity passes it to another fragment.
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ViewModel with LiveData — a shared ViewModel associated with the Activity allows fragments to observe data changes and exchange data reactively.
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Callback interfaces — a fragment defines an interface that the Activity implements, and through it, passes data to another fragment.
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Using EventBus (e.g., Otto, EventBus) — third-party libraries for publishing and subscribing to events between components.
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Shared Preferences or databases — for more persistent storage and data exchange, but not for instant interaction.
The most recommended and modern way is to use a shared ViewModel with LiveData, as it simplifies state management and lifecycle handling.