我想每次添加不同的图像，我重复使用这张卡片。如何在不复制粘贴整个代码的情况下做到这一点

Posted 2023-02-23

【中文标题】我想每次添加不同的图像，我重复使用这张卡片。如何在不复制粘贴整个代码的情况下做到这一点

【英文标题】：I want to add different images each time, I reuses this Card.How to do that without copy pasting the whole Code

【发布时间】：2021-12-19 08:56:11

【问题描述】：

class OwnCard extends StatelessWidget 
  const OwnCard(
    Key? key,
  ) : super(key: key);

  @override
  Widget build(BuildContext context) 
    return Card(
      child: Column(
        children: [
          AspectRatio(
            aspectRatio: 18 / 11,
            child: Image.asset('assets/diamond.png'),
          ),
          Padding(
            padding: EdgeInsets.fromLTRB(16, 12, 16, 8),
            child: Column(
              children: [
                Text('Title'),
                SizedBox(
                  height: 12,
                ),
                Text('Secondary Text')
              ],
            ),
          )
        ],
      ),
    );

【参考方案1】：

将图像 url 传递给 OwnCard 类并显示它：

List<String> urls = ['', '', ''];

GridView.builder(
      gridDelegate: SliverGridDelegateWithFixedCrossAxisCount(
        crossAxisCount: 3,
        childAspectRatio: 1.0,
      ),
      itemCount: 12,
      itemBuilder: (context, index) 
        return OwnCard(urls: urls);
      ,
    );
    
class OwnCard extends StatelessWidget 
  final List<String> urls;

  const OwnCard(
    Key? key,
    required this.urls,
  ) : super(key: key);

  @override
  Widget build(BuildContext context) 
    return Card(
      child: Column(
        children: [
          AspectRatio(
            aspectRatio: 18 / 11,
            child: Image.network(urls[0]),
          ),
          Padding(
            padding: EdgeInsets.fromLTRB(16, 12, 16, 8),
            child: Column(
              children: [
                Text('Title'),
                SizedBox(
                  height: 12,
                ),
                Text('Secondary Text'),
                Image.network(urls[1]),
                Image.network(urls[2]),
              ],
            ),
          )
        ],
      ),
    );

【讨论】：

OwnCard(url:'https://....');

不，我想在 GridView 中重复使用这张卡片，并在每张卡片中添加不同的图像。我该怎么做。我能正确解释吗？

您可以在gridview中重复使用自己的卡片

但是我想每次都添加不同的图片，

已更新，多张图片

【参考方案2】：

我更喜欢这种方式

class OwnCard extends StatelessWidget 
  final String imagePath;
  final String title;
  final String secondaryText;

  const OwnCard(
      Key? key,
      required this.imagePath,
      required this.title,
      required this.secondaryText)
      : super(key: key);

  @override
  Widget build(BuildContext context) 
    return Card(
      child: Column(
        children: [
          AspectRatio(
            aspectRatio: 18 / 11,
            child: Image.asset(imagePath),
          ),
          Padding(
            padding: const EdgeInsets.fromLTRB(16, 12, 16, 8),
            child: Column(
              children: [
                Text(title),
                const SizedBox(
                  height: 12,
                ),
                Text(secondaryText)
              ],
            ),
          )
        ],
      ),
    );