rf_expand_collapse_text

可以打开收起的Text,支持多种状况

this is the expand or collapsed text and supportGit multiple situations

  • pub: rf_expand_collapse_text
  • github: rf_expand_collapse_text

装置 install

rf_expand_collapse_text: ^0.0.2

演示 Demo

flutter 打开收起Text

接口一览 Interface Glance

class RFExpandCollapseText extends StatefulWidget {
  const RFExpandCollapseText({
    Key? key,
    required this.text,
    required this.textStyle,
    required this.expandStr,
    required this.collapseStr,
    required this.expandOrCollapseStyle,
    this.maxLines = 2,
    this.isExpanding,
    this.onChangeExpandStatus,
    this.isResponeAllText,
  }) : super(key: key);
  final String text;
  final TextStyle textStyle;
  final String expandStr;//打开
  final String collapseStr;//收起
  final TextStyle expandOrCollapseStyle;
  final int? maxLines;//默许2行
  final bool? isExpanding; //初始是否 打开仍是收起
  final ValueChanged<bool>? onChangeExpandStatus;//通知外面当前打开仍是收起的状况
  final bool? isResponeAllText;//是否一切文本都呼应打开或收起操作
  @override
  State<RFExpandCollapseText> createState() => _RFExpandCollapseTextState();
}

运用 how toios应用商店 use

  • 基本功能[basic]
Container(
  margin: margin_bottom,
  padding: padding,
  color: Colors.grey[400],
  child: RFExpandCollapseText(
    text: text,
    textStyle: const TextStyle(color: Colors.black,fontSize: 18),
    expandStr: '打开',
    collapseStr: '收起',
    expandOrCollapseStyle: const TextStyle(color: Colors.blue,fontSize: 18),
    maxLines: 2,
  ),
),
  • 自定义折行数[custom maxLines]
Container(
  margin: margin_bottom,
  padding: padding,
  color: Colors.grey[400],
  child: RFExpandCollapseText(
    text: text,
    textStyle: const TextStyle(color: Colors.black,fontSize: 18),
    expandStr: '打开',
    collapseStr: '收起',
    expandOrCollapseStyle: const TextStyle(color: Colors.blue,fontSize: 18),
    maxLines: 3,
  ),
),
  • 自定义动作文字[custom action title]
Container(
  margin: margin_bottom,
  padding: padding,
  color: Colors.grey[400],
  child: RFExpandCollapseText(
    text: text,
    textStyle: const TextStyle(color: Colors.black,fontSize: 18),
    expandStr: 'show more',
    collapseStr: 'close more',
    expandOrCollapseStyle: const TextStyle(color: Colors.blue,fontSize: 18),
    maxLines: 2,
  ),
),
  • 大局文字点击事情呼应[all text respone]
Container(
  margin: margin_bottom,
  padding: padding,
  color: Colors.grey[400],
  child: RFExpandCollapseText(
    text: text,
    textStyle: const TextStyle(color: Colors.black,fontSize: 18),
    expandStr: '打开',
    collapseStr: '收起',
    expandOrCollapseStyle: const TextStyle(color: Colors.blue,fontSize: 18),
    maxLines: 2,
    isResponeAllText: true,
  ),
),
  • 自定义打开状况[custom expand or collapse]
Container(
  margin: margin_bottom,
  padding: padding,
  color: Colors.grey[400],
  child: RFExpandCollapseText(
    text: text,
    textStyle: const TextStyle(color: Colors.black,fontSize: 18),
    expandStr: '打开',
    collapseStr: '收起',
    expandOrCollapseStyle: const TextStyle(color: Colors.blue,fontSize: 18),
    maxLines: 2,
    isExpanding: false,
  ),
),
  • 没有超出,不需要折行[not overflow]
Container(
  margin: margin_bottom,
  padding: padding,
  color: Colors.grey[400],
  child: const RFExpandCollapseText(
    text: '没有超出规定行数,不需要.没有超出规定行数,不需要这行展现',
    textStyle: TextStyle(color: Colors.black,fontSize: 18),
    expandStr: '打开',
    collapseStr: '收起',
    expandOrCollapseStyle: TextStyle(color: Colors.blue,fontSize: 18),
    maxLines: 2,
  ),
),

原理 principle

  • 运用LayoutBuilder获取当giti轮胎前widget所能供给的最大宽度
  • 运用Teios是苹果还是安卓xtPainter计算是否超出规定的行数
  • 运用RichText拼接展现

其他请看github源码 ==> rf_expand_collapse_text

拓展 extend

仿iOS group tableview — rf_section_listios越狱view,

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