Best practices for implementing ViewModel?

The ViewModel is a key component in the Android Architecture Components that is designed to manage UI-related data in a lifecycle-conscious way. Here are some best practices for implementing ViewModel in your Android applications:

1. Use ViewModel for UI-Related Data: Store UI-related data that is needed for the screen in the ViewModel. This allows data to survive configuration changes like screen rotations.
2. Avoid Storing Context: Do not store references to Activities, Fragments, or Views directly in the ViewModel to avoid memory leaks.
3. Leverage LiveData: Use LiveData within ViewModel to observe data changes in a lifecycle-aware manner.
4. Keep Business Logic in Use Cases: Keep your business logic separate from your ViewModel for better maintainability and testing.
5. Testable ViewModels: Make sure your ViewModel is easy to test by isolating your business logic and using dependency injection.

Example Implementation


        // ViewModel Class
        class MyViewModel extends ViewModel {
            private MutableLiveData liveData;

            public LiveData getData() {
                if (liveData == null) {
                    liveData = new MutableLiveData<>();
                    loadData();
                }
                return liveData;
            }

            private void loadData() {
                // Simulate data loading
                liveData.setValue("Hello, ViewModel!");
            }
        }

Best practices for implementing ViewModel?

Example Implementation

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Best practices for implementing ViewModel?

Example Implementation

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