QueryEvent class

Event fired when data changes at location.

Example:

Database database = firebase.database();
database.ref('messages').onValue.listen((QueryEvent e) {
  DataSnapshot datasnapshot = e.snapshot;
  //...
});

Constructors

QueryEvent(DataSnapshot snapshot, [String? prevChildKey])

Creates a new QueryEvent with snapshot and optional prevChildKey.

Properties

hashCode → int

The hash code for this object.

no setter, inherited

prevChildKey → String?

String containing the key of the previous child.

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

snapshot → DataSnapshot

Immutable copy of the data at a database location.

final

Methods

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited