0

再利用可能な複数行テキスト コンポーネントを 1 つ作成しました。TextSpan ウィジェットを使用しています。

コード：

/// Creates multi line styled widget which displays list of items with bullet
class AppMultiLineText extends StatelessWidget {
  final List<CustomStyledText> items;
  final String semanticsText;

  const AppMultiLineText({@required this.items, this.semanticsText}) : assert(items != null);

  @override
  Widget build(BuildContext context) {
    final style = context.appThemeData.bodyCopyDefault.appTextStyle;
    final styleBold = context.appThemeData.bodyCopyBold.appTextStyle;
    return MergeSemantics(
      child: Padding(
        padding: context.appThemeData.multilineDisplay.padding,
        child: Column(
          children: [
            _buildRow(context, items, style, styleBold, semanticsText),
          ],
        ),
      ),
    );
  }
}

Widget _buildRow(BuildContext context, List<CustomStyledText> styledText, AppTextStyle style, AppTextStyle styleBold,
    String semanticsText) {
  final _padding = EdgeInsets.symmetric(vertical: context.appThemeData.bulletStyle.spaceBetweenLines);
  return Semantics(
    child: Padding(
      padding: _padding,
      child: Row(
        children: [
          _buildBulletSection(context),
          _styledWidget(context, styledText, style, styleBold, semanticsText),
          
        ],
      ),
    ),
  );
}

Widget _buildBulletSection(BuildContext context) {
  // final textScaleFactor = _textScaleFactor(context);
  final _bulletPadding = EdgeInsets.only(
      top: context.appThemeData.bulletStyle.bulletOffset, right: context.appThemeData.bulletStyle.spaceAfterBullet);

  return Text.rich(
    TextSpan(
      children: [
        WidgetSpan(
          child: Padding(
            padding: _bulletPadding,
            child: _drawBullet(context),
          ),
        ),
      ],
    ),
    //textScaleFactor: textScaleFactor,
  );
}

Widget _drawBullet(BuildContext context) {
  final _bulletDiameter = context.appThemeData.bulletStyle.bulletDiameter;
  return Container(
    width: _bulletDiameter,
    height: _bulletDiameter,
    decoration: BoxDecoration(
      color: context.appThemeData.bodyCopyDefault.appTextStyle.textStyle.color,
      shape: BoxShape.circle,
    ),
  );
}
Widget _styledWidget(BuildContext context, List<CustomStyledText> styledText, AppTextStyle style,
    AppTextStyle styleBold, String semanticsText) {
  final scaleFactor = context.calculateScaleFactor(
    style.textStyle.fontSize,
    style.maximumFontSize,
    style.minimumScalingFactor,
  );

  return Expanded(
    child: Text.rich(
      TextSpan(
        style: style.textStyle,
        children: styledText.map((e) {
          return TextSpan(
            text: e.text,
            style: e.isBold
                ? styleBold.textStyle.copyWith(
                    letterSpacing: e.isNumeric ? PresentationConstants.numericLetterSpacing : null,
                  )
                : style.textStyle.copyWith(
                    letterSpacing: e.isNumeric ? PresentationConstants.numericLetterSpacing : null,
                  ),
          );
        }).toList(),
      ),
      style: style.textStyle,
      textScaleFactor: scaleFactor,
      textAlign: style.textAlign,
      semanticsLabel: semanticsText,
    ),
  );
}

class CustomStyledText {
  final String text;
  final String styleText;
  final bool isBold;
  final bool isNumeric;

  CustomStyledText(
    this.text, {
    this.styleText,
    this.isBold = false,
    this.isNumeric = false,
  });
}


class:
 AppMultiLineText(
              items: [
                CustomStyledText(context.appLocalization.listOfRequirementsBodyCopy1),
                CustomStyledText(context.appLocalization.listOfRequirementsBodyCopy2),
                
              ],
            ),
          ],
        ),

[![ここに画像の説明を入力][1]][1]

これは予想されるデザインです [1]: https://i.stack.imgur.com/AZF3w.png

しかし、私はすべての項目を段落として取得しています。

4

2 に答える 2

0

別の解決策を提案してもよろしいですか?

import 'package:flutter/material.dart';

class CustomList extends StatelessWidget {
  final List<Widget> children;

  const CustomList({
    Key key,
    this.children = const [],
  }) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return Column(
      children: [
        for (final child in children)
          Container(
            padding: EdgeInsets.all(10.0),
            child: Row(
              crossAxisAlignment: CrossAxisAlignment.start,
              children: [
                Padding(
                  padding: const EdgeInsets.all(5.0),
                  child: Icon(
                    Icons.circle,
                    size: 4.0,
                  ),
                ),
                SizedBox(width: 10.0),
                Expanded(child: child),
              ],
            ),
          ),
      ],
    );
  }
}

好きなウィジェットをその子に渡すと、ドットが自動的に追加されます。

CustomList(
            children: [
              Text('My first line of text'),
              Text(
                'My second line of text which is long enough, long enough,  long enough,  long enough,  long enough,  long enough',
                style: TextStyle(
                  fontWeight: FontWeight.bold,
                  color: Colors.orange,
                  fontSize: 20.0,
                ),
              ),
            ],
          ),

- - - - - - アドオン - - - - - -

さらに進んで、「タイプ」を追加して、順序付けされていないスタイルから順序付けられたスタイルに切り替えることができます。

import 'package:flutter/material.dart';

enum CustomListType { Unordered, Ordered }

class CustomList extends StatelessWidget {
  final List<Widget> children;
  final CustomListType type;

  const CustomList({
    Key key,
    this.children = const [],
    this.type = CustomListType.Unordered,
  }) : super(key: key);

  @override
  Widget build(BuildContext context) {
    final _children = <Widget>[];
    for (var i = 0; i < children.length; i++) {
      _children.add(Container(
        padding: EdgeInsets.all(10.0),
        child: Row(
          crossAxisAlignment: CrossAxisAlignment.start,
          children: [
            type == CustomListType.Ordered
                ? Text('${i + 1}.')
                : Padding(
                    padding: const EdgeInsets.all(5.0),
                    child: Icon(
                      Icons.circle,
                      size: 4.0,
                    ),
                  ),
            SizedBox(width: 10.0),
            Expanded(child: children.elementAt(i)),
          ],
        ),
      ));
    }
    return Column(
      children: _children,
    );
  }
}

CustomList(
            type: CustomListType.Ordered,
            children: [
              Text('My first line of text'),
              Text(
                'My second line of text which is long enough, long enough,  long enough,  long enough,  long enough,  long enough',
                style: TextStyle(
                  fontWeight: FontWeight.bold,
                  color: Colors.orange,
                  fontSize: 20.0,
                ),
              ),
            ],
          ),
于 2021-06-07T11:40:16.760 に答える