com.google.cloud.firestore

Interface EventListener<T>

public interface EventListener<T>

An interface for event listeners.

Method Summary

Modifier and Type	Method and Description
void	onEvent(T value, FirestoreException error) onEvent will be called with the new value or the error if an error occurred.

Method Detail

onEvent

void onEvent(@Nullable
             T value,
             @Nullable
             FirestoreException error)

onEvent will be called with the new value or the error if an error occurred. It's guaranteed that exactly one of value or error will be non-null.

Parameters:

value - The value of the event. null if there was an error.

error - The error if there was error. null otherwise.