CircularProgressIndicator class
A material design circular progress indicator, which spins to indicate that the application is busy.
A widget that shows progress along a circle. There are two kinds of circular progress indicators:
- Determinate. Determinate progress indicators have a specific value at each point in time, and the value should increase monotonically from 0.0 to 1.0, at which time the indicator is complete. To create a determinate progress indicator, use a non-null value between 0.0 and 1.0.
- Indeterminate. Indeterminate progress indicators do not have a specific value at each point in time and instead indicate that progress is being made without indicating how much progress remains. To create an indeterminate progress indicator, use a null value.
See also:
- Inheritance
- Object
- Diagnosticable
- DiagnosticableTree
- Widget
- StatefulWidget
- ProgressIndicator
- CircularProgressIndicator
- Implementers
Constructors
Properties
- strokeWidth → double
-
The width of the line used to draw the circle.
final
- backgroundColor → Color
-
The progress indicator's background color. The current theme's
ThemeData.backgroundColor by default.
final, inherited
- hashCode → int
-
The hash code for this object. [...]
read-only, inherited
- key → Key
-
Controls how one widget replaces another widget in the tree. [...]
final, inherited
- runtimeType → Type
-
A representation of the runtime type of the object.
read-only, inherited
- semanticsLabel → String
-
The
Semantics.label
for this progress indicator. [...]final, inherited - semanticsValue → String
-
The
Semantics.value
for this progress indicator. [...]final, inherited - value → double
-
If non-null, the value of this progress indicator with 0.0 corresponding
to no progress having been made and 1.0 corresponding to all the progress
having been made. [...]
final, inherited
-
valueColor
→ Animation<
Color> -
The indicator's color is the animation's value. To specify a constant
color use:
new AlwaysStoppedAnimation<Color>(color)
. [...]final, inherited
Methods
-
createState(
) → _CircularProgressIndicatorState -
Creates the mutable state for this widget at a given location in the tree. [...]
override
-
createElement(
) → StatefulElement -
Creates a StatefulElement to manage this widget's location in the tree. [...]
inherited
-
debugDescribeChildren(
) → List< DiagnosticsNode> -
Returns a list of DiagnosticsNode objects describing this node's
children. [...]
@protected, inherited
-
debugFillProperties(
DiagnosticPropertiesBuilder properties) → void -
Add additional properties associated with the node. [...]
inherited
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a non-existent method or property is accessed. [...]
inherited
-
toDiagnosticsNode(
{String name, DiagnosticsTreeStyle style }) → DiagnosticsNode -
Returns a debug representation of the object that is used by debugging
tools and by toStringDeep. [...]
inherited
-
toString(
{DiagnosticLevel minLevel: DiagnosticLevel.debug }) → String -
Returns a string representation of this object.
inherited
-
toStringDeep(
{String prefixLineOne: '', String prefixOtherLines, DiagnosticLevel minLevel: DiagnosticLevel.debug }) → String -
Returns a string representation of this node and its descendants. [...]
inherited
-
toStringShallow(
{String joiner: ', ', DiagnosticLevel minLevel: DiagnosticLevel.debug }) → String -
Returns a one-line detailed description of the object. [...]
inherited
-
toStringShort(
) → String -
A short, textual description of this widget.
inherited
Operators
-
operator ==(
dynamic other) → bool -
The equality operator. [...]
inherited