How to modify Flutter widgets from the code behind - flutter

I am just learning flutter and I am wondering if it is possible to change the properties of a widget from the code.
I am familiar with WPF, where I can just access the Elements by a name that is given to them (e.g. "btnIncreaseCounter") and then say btnIncreaseCounter.Background = Colors.Orange.
Does a similar concept exist in Flutter? Or how do I modify my widgets from the code?a

You can do it in flutter using key of particular widget,
but flutter is not designed to code this way, flutter provides you with much easy and best practices to achieve the same.

Related

Flutter: Make text/images selectable in whole web app

In the Flutter web apps, there is no default functionality which makes text and images in the app selectable.
Is there a way to enable selection functionality for text/image on web?
I did check SelectableText widget but it is only for text and I would need to use it over every text. Also, you can't select text in multiple SelectableText widgets at once, you can only select text in one of them. I'm looking for a solution to select all text in the app without making change to every text widget.
Let me know if there’s one step solution to achieve this thing in whole web app.
In Flutter 3.3, with the introduction of the SelectableArea widget, any child of the SelectableArea widget has selection enabled for free!
To take advantage of this powerful new feature, simply wrap your route body (such as the Scaffold) with the SelectionArea widget and let Flutter do the rest.
For a more comprehensive deep dive into this awesome new feature, please visit the SelectableArea API page.
Flutter Web currently does not support multiple text selection across SelectableText widgets.
However, there are some experimental widgets that people are currently working on. According to a guide available at:
Custom SelectableScope Widget
They have proposed a custom widget, a Selectable scope, which basically allows for anything within it to be selectable (currently text and images)
NOTE: THIS IS CURRENTLY UNDER EXPERIMENTATION AND MIGHT CHANGE AS MENTIONED IN THE PROVIDED LINK.

What is the best practice to work with LayoutBuilder in Flutter?

I have built an application for mobile screens and I now want to add Desktop and Tablet screens to it.
After a bit of googling I read about the LayoutBuilder and my question is:
What is the best Code/Project Structure to use LayoutBuilder?
Can I use it with the folder-by-feature pattern?
Should I use a Global Builder or add one into each feature?

Serialize Flutter Widget

Is there any way to serialize the Build layout of a stateless flutter widget and save it to a database?
I would like to design many simple Badge widgets and don‘t want to update the App each Time I have a new one.
I would like to save new widgets to a db instead.
Remote flutter widgets - may be the direction. It has mechanism for rendering widgets based on declarative UI descriptions that can be obtained & rendered at runtime.

How to Implement Multi-Layer Circular ListView in flutter?

I want something like this:
Circular ListView Example
But, I have been looking everywhere and can't find someway to do so in flutter, is it possible? if not in what framework or language, is this possible?
Note: Already Tried This How to create circular ListView in Flutter It doesn't spin nor it can I select any of the items, so generally it doesn't work

Can I have two MaterialApp widgets in an app in Flutter

I have two questions with and "if" regarding the first question. As the title says I know it's better to have one MaterialApp in an App in Flutter and making Scaffold widgets for screens. But in a situation like this App which I followed for learning purposes and it's really written well and very clean. but it uses "TabBarView" as a default home for the entire app. So if I want to add another screen like "LoginSreen" that's not part of the "TabBarView" it's not inheriting the "MaterialApp" widget features. So I have to add a "MaterialApp" widget independently for that screen.
So the question is, is it ok to have two "MaterialApp" widgets in a situation like this?
if yes does it affect any variables that's shared among the screens like "SharedPreference"? or what does it affect?
If it's a bad behavior to have two "MaterialApp" widgets to in an App, Then how can you get rid of the "NavScreen()" and implement the TabBarView in the screens, Because I have tried many ways and looked at many of open source projects like this they have "TabBarView" widget as the body and start of the project.
yes you can definitely have two mat apps. but its not recommended.