CustomFooter class

自定义底部加载指示器

允许开发者完全自定义加载底部的UI和行为

主要功能：

• 通过builder自定义UI
• 支持加载状态回调
• 支持偏移量变化回调
• 支持加载开始和结束回调

示例用法：

CustomFooter(
  builder: (context, mode) {
    return Container(
      height: 50.0,
      alignment: Alignment.center,
      child: Text(mode.toString()),
    );
  },
  onModeChange: (mode) {
    print('加载状态变化: $mode');
  },
)

相关组件：

Inheritance

• Object
• DiagnosticableTree
• Widget
• StatefulWidget
• LoadIndicator
• CustomFooter

Constructors

CustomFooter({Key? key, required FooterBuilder builder, OffsetCallback? onOffsetChange, ModeChangeCallback<LoadStatus>? onModeChange, AsyncVoidCallback? readyLoading, AsyncVoidCallback? endLoading, double height = 60.0, LoadStyle loadStyle = LoadStyle.showAlways, VoidCallback? onClick})

构造函数

const

Properties

builder → FooterBuilder

底部构建器

final

endLoading → AsyncVoidCallback?

结束加载回调

final

hashCode → int

The hash code for this object.

no setter, inherited

height → double

指示器的视觉高度

final, inherited

key → Key?

Controls how one widget replaces another widget in the tree.

final, inherited

loadStyle → LoadStyle

加载更多显示样式

final, inherited

onClick → VoidCallback?

用户点击底部时的回调

final, inherited

onModeChange → ModeChangeCallback<LoadStatus>?

模式变化回调

final

onOffsetChange → OffsetCallback?

偏移量变化回调

final

readyLoading → AsyncVoidCallback?

准备加载回调

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

createElement() → StatefulElement

Creates a StatefulElement to manage this widget's location in the tree.

inherited

createState() → State<CustomFooter>

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, int wrapWidth = 65}) → 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