ConnectionState enum
The state of connection to an asynchronous computation.
The usual flow of state is as follows:
- none, maybe with some initial data.
- waiting, indicating that the asynchronous operation has begun, typically with the data being null.
- active, with data being non-null, and possible changing over time.
- done, with data being non-null.
See also:
- AsyncSnapshot, which augments a connection state with information received from the asynchronous computation.
Values
- none → const ConnectionState
-
Not currently connected to any asynchronous computation.
For example, a FutureBuilder whose FutureBuilder.future is null.
- waiting → const ConnectionState
-
Connected to an asynchronous computation and awaiting interaction.
- active → const ConnectionState
-
Connected to an active asynchronous computation.
For example, a Stream that has returned at least one value, but is not yet done.
- done → const ConnectionState
-
Connected to a terminated asynchronous computation.
Properties
- hashCode → int
-
The hash code for this object.
no setterinherited
- index → int
-
A numeric identifier for the enumerated value.
no setterinherited
- name → String
-
Available on Enum, provided by the EnumName extension
The name of the enum value.no setter - runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
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
Constants
-
values
→ const List<
ConnectionState> - A constant List of the values in this enum, in order of their declaration.