PageView | Imitation flip book effect

I have a navigation menu that I made for a test application, there are some tabs that I want to hide if I am not logged into the application. After logging in, these tabs should appear. The problem is that after logging in, I go to the desired page and I don't see all the navigation menu icons. For them to appear, I need to click on one of the available icons (only 2 icons are available for authorization) and only then the navigation menu will be updated and everything will be as it should be. All 6 icons will be visible! Can someone help me with this? Here I described the problem with the code that I am using. I would be grateful for any help.

I have a layout where I have two scroll views, one is a PageView which is used to display a list of pictures horizontally, the second is a SingleChildScrollView (maybe should be something else?), this scroll view is partially above the first one as initial position and can go completely over. Some screenshots to image this:

The problem is, if I make the 2nd scroll view take all page and add internal padding to it to make it the good height, the 2nd scroll view work as expected but the first one (witch is behind) isn't working anymore. The 2nd solution would be to wrap the SingleChildScrollView with a Padding widget to make it the good height and add Clip.none parameter to the scroll view, but in this case the scroll view cannot be scrolled in PageView zone even if the SingleChildScrollViewis over.

I wonder if someone already encountered a behavior like this and what is your solution.

Here my actual code with second solution:

I made a website with PageController to control the scroll of some screens. And I made a menu section with screen names, and when any of them are pressed, the user will navigate to the respective screen.

The app is working fine. But I refactored the menu button so I can control it's style, and to add animation in the future.

But when I refactored the button, I can't pass the PageController index, or the nextPage function.

That's why I thought of using the provider package. However, I didn't the package before, and my setup seems complex. For I should pass the PageController state to the button, and the button should send the nextPage function with a new number.

How can I achieve this?

Here's my code:

The button:

So i'm trying to order some stuff. Like that:

I'm trying to dismiss the keyboard between swiping between screen2(has a textfield) and screen1 using the PageView widget. I've tried calling Focus.of(context).unfocus(); in the dispose method of screen 2.But the keyboard remains.. Here's a minimum example...

Type and trying to props from Parent to Child using Type-React, Getting an error, that I already look but to no avail "Type 'void' is not assignable to type 'Function'."

Parent

I have a combination of bar line chart JS and it has only one axes. what I want to do is to add a second axes on the right. image for code result with only one axes in the below link. Just want to know how can I add a second axes and set its values

image for code result

my code below for the bar line chart html code:

I am reading at https://ci.apache.org/projects/flink/flink-docs-release-1.13/docs/connectors/table/upsert-kafka/.

It says that:

As a sink, the upsert-kafka connector can consume a changelog stream. It will write INSERT/UPDATE_AFTER data as normal Kafka messages value, and write DELETE data as Kafka messages with null values (indicate tombstone for the key).

It doesn't mention that if UPDATE_BEFORE message is written to upsert kafka,then what would happen?

In the same link (https://ci.apache.org/projects/flink/flink-docs-release-1.13/docs/connectors/table/upsert-kafka/#full-example), the doc provides a full example:

So i'm trying to remove space from my column, Below is the parent part,