CustomHeader class

a custom Indicator for header

here is the very simple usage

CustomHeader(
     builder: (context,mode){
       Widget body;
       if(mode==RefreshStatus.idle){
         body = Text("pull down refresh");
       }
      else if(mode==RefreshStatus.refreshing){
         body = CupertinoActivityIndicator();
       }
       else if(mode==RefreshStatus.canRefresh){
         body = Text("release to refresh");
       }
       else if(mode==RefreshStatus.completed){
         body = Text("refreshCompleted!");
      }
       return Container(
         height: 60.0,
         child: Center(
           child: body,
         ),
      );
     },
   )

If you need to listen overScroll event do some animate,you should use OnOffsetChange callback in SmartRefresher finally,If your indicator contain more complex animation and need to update frequently ,I suggest you extends RefreshIndicator to implements

See also

CustomFooter, a custom Indicator for footer

Inheritance

Constructors

CustomHeader({Key? key, required HeaderBuilder builder, VoidFutureCallBack? readyToRefresh, VoidFutureCallBack? endRefresh, OffsetCallBack? onOffsetChange, ModeChangeCallBack<RefreshStatus>? onModeChange, VoidCallback? onResetValue, double height = 60.0, Duration completeDuration = const Duration(milliseconds: 600), RefreshStyle refreshStyle = RefreshStyle.Follow})
const

Properties

builder → HeaderBuilder
final
completeDuration → Duration
the stopped time when refresh complete or fail
finalinherited
endRefresh → VoidFutureCallBack?
final
hashCode → int
The hash code for this object.
no setterinherited
height → double
the visual extent indicator
finalinherited
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
offset → double
finalinherited
onModeChange → ModeChangeCallBack<RefreshStatus>?
final
onOffsetChange → OffsetCallBack?
final
onResetValue → VoidCallback?
final
readyToRefresh → VoidFutureCallBack?
final
refreshStyle → RefreshStyle?
refresh display style
finalinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

Methods

createElement() → StatefulElement
Creates a StatefulElement to manage this widget's location in the tree.
inherited
createState() → State<StatefulWidget>
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