相关疑难解决方法(0)

我有一个带有大量不同视图的TabBarView().我希望它们是一个顶部有TextField的列,下面是ListView.Builder(),但两个小部件应该在同一个可滚动区域(scrollview).我实现它的方式引发了一些错误:

@override
Widget build(BuildContext context) {
return new Column(
  mainAxisAlignment: MainAxisAlignment.center,
    mainAxisSize: MainAxisSize.max,
    children: <Widget>[
      new Padding(
          padding: EdgeInsets.symmetric(horizontal: 16.0, vertical: 8.0),
          child: new TextField(
            decoration: new InputDecoration(
                hintText: "Type in here!"
            ),
          )
      ),
      new ListView.builder(
          itemCount: _posts.length, itemBuilder: _postBuilder)
    ],
   );
}

错误:

I/flutter (23520): The following assertion was thrown during performResize():
I/flutter (23520): Vertical viewport was given unbounded height.
I/flutter (23520): Viewports expand in the scrolling direction to fill their container.In this case, a vertical
I/flutter (23520): …

我有一个ListView带shrinkWrap: true。

另外，我申请BouncingScrollPhysics()了ListView

问题是反弹物理仅适用于ListView. 当我滚动到顶部时，它不会显示反弹效果。