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
final, inherited
endRefresh VoidFutureCallBack
final
hashCode int
The hash code for this object. [...]
@nonVirtual, read-only, inherited
height double
the visual extent indicator
final, inherited
key Key
Controls how one widget replaces another widget in the tree. [...]
final, inherited
offset double
final, inherited
onModeChange ModeChangeCallBack<RefreshStatus>
final
onOffsetChange OffsetCallBack
final
onResetValue VoidCallback
final
readyToRefresh VoidFutureCallBack
final
refreshStyle RefreshStyle
refresh display style
final, inherited
runtimeType Type
A representation of the runtime type of the object.
read-only, inherited

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. [...]
@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 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. [...]
@nonVirtual, inherited