OnTab | application framework that includes everything | Application Framework library

I am emitting an event in a child component so I can, if I need to, prevent it from happening in the parent. Is there a way to retrieve event object so I can prevent it in the parent component like this ?

I'm creating a bottom navigation bar. When the app launches, the default selected navigation tab extends as seen in the gif.

The issue is when AnimatedSize starts the animate, borders cuts off. Therefore, the container's border-radius doesn't look good. I don't think I'm clipping the view. What am I missing?

slide_box.dart

I have this function for cycling through tabs:

I like to create a simple login in Flutter. When running the code, it gets stuck in an infinity loop. I already found out it's "bad practice" to call a REST API within the build method but I don't know how to avoid this.

How can I resolve this problem? What is the best way to handle REST calls from a button press/tap without setting the functionality within the "build" method?

My login view is as followed (details omitted):

I have an InkWell which uses onTap to perform some actions. When the button is tapped, I like an indicator to be shown (in case the action is long-running). However, the setState in the InkWell does not trigger its children to be re-rendered. The code is as follows:

I am creating an App and I am new in flutter, dart. I have problem in "context". I want to replace the page/screen onTab(). But I'm having the following error:

I am new to flutter , Please help me to get out of this issue,

Issue -> After click any of the menu icon , color is not changing

While staring app , icon colours are setting correctly , Home icon is default , if I click Scan or settings icon green color is not setting for icon as well as text ,

I have tried activeIcon of BottomNavigationBarItem still not working

Here is my code,

I have created an Angular reactive form which has a couple of basic form control elements, then a form array of simple form groups. You can dynamically add & remove form group instances from the form array.

Here is a demo.

When you dynamically add a new form group instance, its fields are required. However, you can remove it. Since the fields are required, the form is invalid immediately after your add a new form group. The problem that I am having is that the form remains invalid even if you remove the form group instance and every remaining form control is valid. I've checked this - I iterated through all my form elements and each individual form control is valid, but the form array remains invalid.

How can I ensure the form array is valid after I remove an invalid form group from it?

Component

I have class A: