GNestedScrollView class
一自定义的NestedScrollView对象
Flutter系统自带的NestedScrollView如果使用PageView为body且PageView的子页面是ListView时, 当滑动一个页面的ListView其他不可见的ListView也会同步滑动。
当下拉时,当PageView中任意一个ListView滑动顶部时都会拉出Header,这是不正确的,我们应该只判断当前页面的ListView是否滑动到了顶部。
这个NestedScrollView解决了这个问题。
- Inheritance
-
- Object
- DiagnosticableTree
- Widget
- StatefulWidget
- GNestedScrollView
Constructors
- GNestedScrollView({Key? key, ScrollController? controller, Axis scrollDirection = Axis.vertical, bool reverse = false, ScrollPhysics? physics, required NestedScrollViewHeaderSliversBuilder headerSliverBuilder, required Widget body, DragStartBehavior dragStartBehavior = DragStartBehavior.start, bool floatHeaderSlivers = false, Clip clipBehavior = Clip.hardEdge, String? restorationId, ScrollBehavior? scrollBehavior})
-
const
Properties
- body → Widget
-
final
- clipBehavior → Clip
-
final
- controller → ScrollController?
-
final
- dragStartBehavior → DragStartBehavior
-
final
- floatHeaderSlivers → bool
-
final
- hashCode → int
-
The hash code for this object.
no setterinherited
- headerSliverBuilder → NestedScrollViewHeaderSliversBuilder
-
final
- key → Key?
-
Controls how one widget replaces another widget in the tree.
finalinherited
- physics → ScrollPhysics?
-
final
- restorationId → String?
-
Restoration ID to save and restore the scroll offset of the scrollable.
final
- reverse → bool
-
final
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- scrollBehavior → ScrollBehavior?
-
final
- scrollDirection → Axis
-
final
Methods
-
createElement(
) → StatefulElement -
Creates a StatefulElement to manage this widget's location in the tree.
inherited
-
createState(
) → GNestedScrollViewState -
Creates the mutable state for this widget at a given location in the tree.
override
-
debugDescribeChildren(
) → List< DiagnosticsNode> -
Returns a list of
DiagnosticsNode
objects describing this node's children.inherited -
debugFillProperties(
DiagnosticPropertiesBuilder properties) → void -
Add additional properties associated with the node.
inherited
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent 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 DiagnosticsNode.toStringDeep.
inherited
-
toString(
{DiagnosticLevel minLevel = DiagnosticLevel.info}) → String -
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 ==(
Object other) → bool -
The equality operator.
inherited