How to migrate to Lifecycle-aware components from an older API?

When migrating to Lifecycle-aware components in Android, it's essential to adapt your existing code to leverage the benefits of the Lifecycle library. This guide will help you understand how to transition from older APIs to using Lifecycle-aware components effectively.

// Example of migrating to Lifecycle-aware Components

// Step 1: Add the Lifecycle dependencies in your build.gradle file
dependencies {
    implementation 'androidx.lifecycle:lifecycle-extensions:2.2.0'
}

// Step 2: Use ViewModel to separate UI data from UI controller
public class MyViewModel extends ViewModel {
    private MutableLiveData data;

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

    private void loadData() {
        // Load data asynchronously
    }
}

// Step 3: Access ViewModel in your Activity or Fragment
public class MyActivity extends AppCompatActivity {
    private MyViewModel viewModel;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        
        viewModel = new ViewModelProvider(this).get(MyViewModel.class);
        viewModel.getData().observe(this, new Observer() {
            @Override
            public void onChanged(String s) {
                // Update UI with the new data
            }
        });
    }
}