NotificationListener | project help you to read all app notification | Notification library

This question seems silly but i really wonder why i cant wrap this Future Builder in a column.

The Widget is called inside a scaffold. What am I doing wrong? I tried to wrap it in a ListView and some other widgets too. It works perfectly if the build method returns the FutureBuilder which returns different widgets depending on the outcome.

If the build method returns another widget with the FutureBuilder as an child or in a array of widgets (children) there is only a white screen.

The IDE is not showing any errors and the debug console either. thx for help!

EDIT: Got an error!

Error: Cannot hit test a render box with no size.

After finishing my web app on flutter I tried to release it on the server by flutter build web command. I uploaded my files to the server but I am getting a blank screen. In the debugging mode on Android Studio, it works fine. I am also getting the same blank screen when I use the command flutter run -d chrome --profile --verbose I found similar questions here but the root cause seems to be different every time and nothing worked for me, can you please advice?

Below is a simplified version of my flutter code, suffering from the same issue:

I'm trying to dynamically render a list of DailyWeatherForecast, a Flutter StatelessWidget. The DailyWeatherForecast widget has some variables such as final String month and final double low, which intend to act as a single summarized forecast for a day as a narrow card. It has a constructor, and it works if I pass in hard-coded values to it from my main.dart. It looks and works great.

Information is pulled from an API though. So, I can't have this information hard-coded. See the code below for my approach:

Data from the CollectionCard widget needs to be transferred to the CollectionPage screen using the function Navigator.pushNamed function (context, '/ collection', arguments: data). When I do this and try to capture the value of the arguments using function:

I designed layout divided in two parts:-

1.Horizontal Lisview fixed at top

2.Vertical scrollview for rest of layout

I want Horizontal Lisview to occupy space only that much what is needed to cover its content.That’s why i put it inside Flexible widget. I want Vertical Scrollview to fill all the leftover available space.That’s why i put it inside Expandable widget.

My layout looks like this:-

I use OverflowBox, but i get this issue.

The following RenderObject was being processed when the exception was fired: RenderConstrainedOverflowBox#8530c NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE: needs compositing creator: OverflowBox ← _BodyBuilder ← MediaQuery ← LayoutId-[<_ScaffoldSlot.body>] ← CustomMultiChildLayout ← AnimatedBuilder ← DefaultTextStyle ← AnimatedDefaultTextStyle ← _InkFeatures-[GlobalKey#f1374 ink renderer] ← NotificationListener ← PhysicalModel ← AnimatedPhysicalModel ← ⋯ parentData: offset=Offset(0.0, 0.0); id=_ScaffoldSlot.body (can use size)
constraints: BoxConstraints(0.0<=w<=331.2, 0.0<=h<=164.8) size: Size(331.2, 164.8) alignment: Alignment.center textDirection: ltr minWidth: Infinity maxWidth: use parent maxWidth constraint
minHeight: 200.0 maxHeight: 200.0 This RenderObject had the following descendants (showing up to depth 5): child: RenderRepaintBoundary#7796e NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE child: RenderCustomPaint#57723 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE child: RenderRepaintBoundary#6b624 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE child: _RenderScrollSemantics#80ff2 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE child: RenderPointerListener#c1da5 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE ════════════════════════════════════════════════════════════════════════════════════════════════════

Another exception was thrown: RenderBox was not laid out: RenderRepaintBoundary#7796e NEEDS-LAYOUT NEEDS-PAINT

The Code Is:

I created a widget using Listview.separate() and when I scroll my list, there is an effect(scrolling effect, i presume) on each item.

here's how it looks when scrolling:

It may not clear an effect what I talk about, but when you look at image closely, you can see that there is a blueish effect attached to each item while scrolling.

here's an snippet of my code

I've copied the documentation for StatefulWidget to create this code:

I am using Flutter and firebase to create a web application. Below are the dependencies: