flutter - Future Builder`构建函数返回null`

Question

这是错误消息

To return an empty space that causes the building widget to fill available room, return "Container()". To return an empty space that takes as little room as possible, return "Container(width: 0.0, height: 0.0)".

我设法使用 return 但仍然发生这种情况，这是我发生错误的代码

  FutureBuilder(
   future: _getdetailRM(),
    builder: (context, snapshot) {
    if (snapshot.hasData) {
    return Container();
   }
  }
 )

标签： flutterdart

Answer 1

    FutureBuilder(
       future: _getdetailRM(),
        builder: (context, snapshot) {
        if (snapshot.hasData) {
        return Container();
       }else{
    return Container();
    
    }
      }

 )