dictionary - Flutter ExpansionTile child 为Gridview？

有没有可能让颤振扩展的儿童成为网格视图？
目前我正在使用此代码获取ListView。

children : myData.map((data) {return MyWidget()}).toList()

我想让昂贵的孩子成为网格视图而不是列表视图。我正在制作一个购物应用程序，其中Expensionile是一个类别，我希望子类别的孩子成为GridView。

最佳答案

这是我的尝试：

SingleChildScrollView(
          child: Column(children: <Widget>[
            ExpansionTile(title: Text("Category 1"), children: <Widget>[
              GridView.count(
                  shrinkWrap: true,
                  physics: ClampingScrollPhysics(),
                  crossAxisCount: 2,
                  padding: const EdgeInsets.all(20.0),
                  crossAxisSpacing: 10.0,
                  childAspectRatio: MediaQuery.of(context).size.width /
                      (MediaQuery.of(context).size.height / 4),
                  children: <Widget>[
                    Text("SubCategory 1"),
                    Text("SubCategory 2"),
                    Text("SubCategory 3"),
                    Text("SubCategory 4"),
                    Text("SubCategory 5"),
                    Text("SubCategory 6"),
                  ])
            ]),
            ExpansionTile(title: Text("Category 2"), children: <Widget>[
              GridView.count(
                  shrinkWrap: true,
                  physics: ClampingScrollPhysics(),
                  crossAxisCount: 2,
                  padding: const EdgeInsets.all(20.0),
                  crossAxisSpacing: 10.0,
                  childAspectRatio: MediaQuery.of(context).size.width /
                      (MediaQuery.of(context).size.height / 4),
                  children: <Widget>[
                    Text("SubCategory 1"),
                    Text("SubCategory 2"),
                    Text("SubCategory 3"),
                    Text("SubCategory 4"),
                    Text("SubCategory 5"),
                    Text("SubCategory 6"),
                  ])
            ]),
            ExpansionTile(title: Text("Category 3"), children: <Widget>[
              GridView.count(
                  shrinkWrap: true,
                  physics: ClampingScrollPhysics(),
                  crossAxisCount: 2,
                  padding: const EdgeInsets.all(20.0),
                  crossAxisSpacing: 10.0,
                  childAspectRatio: MediaQuery.of(context).size.width /
                      (MediaQuery.of(context).size.height / 4),
                  children: <Widget>[
                    Text("SubCategory 1"),
                    Text("SubCategory 2"),
                    Text("SubCategory 3"),
                    Text("SubCategory 4"),
                    Text("SubCategory 5"),
                    Text("SubCategory 6"),
                  ])
            ])
          ]),
        )

关于dictionary - Flutter ExpansionTile child 为Gridview？，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/53518596/