如何调整Flutter ListView小部件中项目之间的间距

ListView.builder(
  itemCount: items.length,
  itemBuilder: (context, index) {
    return Padding(
      padding: EdgeInsets.only(top: 8.0), // 调整这里的数值来改变间距
      child: ListTile(
        title: Text(items[index]),
      ),
    );
  },
);

class SpaceDecoration extends Decoration {
  final double space;

  SpaceDecoration(this.space);

  @override
  BoxPainter createBoxPainter([VoidCallback? callback]) {
    return _SpacePainter(space);
  }
}

class _SpacePainter extends BoxPainter {
  final double space;

  _SpacePainter(this.space);

  @override
  void paint(Canvas canvas, Offset offset, ImageConfiguration configuration) {
    final paint = Paint()..color = Colors.transparent;
    final bounds = Rect.fromLTWH(
      offset.dx,
      offset.dy + space,
      configuration.size.width,
      configuration.size.height - space,
    );
    canvas.drawRect(bounds, paint);
  }
}

ListView.builder(
  itemCount: items.length,
  itemBuilder: (context, index) {
    return ListTile(
      title: Text(items[index]),
    );
  },
  itemExtent: 50.0, // 设置一个固定的高度
  itemBuilder: (context, index) {
    return ListTile(
      title: Text(items[index]),
    );
  },
  itemDecoration: SpaceDecoration(10.0), // 添加间距
);

ListView.builder(
  itemCount: items.length,
  itemBuilder: (context, index) {
    return Row(
      children: [
        Expanded(
          flex: 1,
          child: ListTile(
            title: Text(items[index]),
          ),
        ),
        SizedBox(width: 10), // 添加间距
        Expanded(
          flex: 2,
          child: Container(), // 或者其他小部件
        ),
      ],
    );
  },
);