Flutter检查json显示/隐藏容器中是否存在值

Question

我是刚开始颤动，我想显示容器，如果种类模型中存在特定值，模型包含商店，杂货店和市场，我不知道该怎么做，请帮助我的代码控制器返回json是kindController.kindDataList

因此，如果json中存在市场，则表明

     child: HomeFlatBtn(image: 'market', height: 150, currentTab: 1,),



         Container(
          child: Padding(
            padding: EdgeInsets.symmetric(
                horizontal: Dimensions.PADDING_SIZE_SMALL),
            child: IntrinsicHeight(
              child: Row(
                crossAxisAlignment: CrossAxisAlignment.stretch,
                children: [
                  Expanded(
                    child: Column(children: [
                      
                      Padding(
                        padding: EdgeInsets.symmetric(vertical: Dimensions
                            .PADDING_SIZE_SMALL,
                            horizontal: Dimensions.PADDING_SIZE_SMALL),
                        child: HomeFlatBtn(
                          image: 'market', height: 150, currentTab: 1,),
                      ),

                      Padding(
                        padding: EdgeInsets.symmetric(horizontal: Dimensions
                            .PADDING_SIZE_SMALL),

                        child: HomeFlatBtn(
                          image: 'grocery', height: 150, currentTab: 1,),
                      ),
                    ]
                    ),
                  ),
                  Expanded(child: HomeFlatBtn(image: 'food',
                      height: 0,
                      currentTab: 1),
                  ),
                ],
              ),
            ),
          ),
        ),

Answer 1

为此，您可以使用< code>Visibility小部件。

只需将容器包装为可见性。像这样：

Visibility(
  visible: true,  //set this to either true or false
  child: Container(
    //the contents of Container
  ),
),
//visible decides whether your Container will be visible or not.