What is LiveData in Android SDK?

LiveData is a lifecycle-aware data holder class, which means it respects the lifecycle of other application components, such as activities, fragments, or services. This helps in managing UI-related data in a way that is consistent with the lifecycle of the app, ensuring that the UI only updates when it is in an active state (started or resumed).

LiveData can be observed for changes and can notify observers when the underlying data changes, making it ideal for responsive app design. It is part of Android Architecture Components and is designed to work seamlessly with ViewModel and other lifecycle-aware components.

Here's a simple example of how to use LiveData in a ViewModel:

        import androidx.lifecycle.LiveData;
        import androidx.lifecycle.MutableLiveData;
        import androidx.lifecycle.ViewModel;

        public class MyViewModel extends ViewModel {
            private final MutableLiveData myData = new MutableLiveData<>();

            public LiveData getMyData() {
                return myData;
            }

            public void setMyData(String data) {
                myData.setValue(data);
            }
        }