CallbackGroup class Null safety

create a gorup of callback. Once call() method is invoked, all callbacks in the group will be invoked as well

Constructors

CallbackGroup()

Properties

hashCode int
The hash code for this object. [...]
read-only, inherited
runtimeType Type
A representation of the runtime type of the object.
read-only, inherited

Methods

add(VoidCallback callback) → void
addAll(Iterable<VoidCallback> callbacks) → void
call() → void
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed. [...]
inherited
remove(VoidCallback callback) → void
removeAll(Iterable<VoidCallback> callbacks) → void
toString() String
A string representation of this object. [...]
inherited

Operators

operator ==(Object other) bool
The equality operator. [...]
inherited