AppBar accessibility traversal order

Hello,

When we use a SliverAppBar, we notice that the semantic order is defined in this way: Leading -> Title -> Actions -> Bottom -> FlexingSpace.

flutter/packages/flutter/lib/src/material/app_bar.dart

Line 1027 in ee0bbf4

Semantics(

I think it could be useful to be able to modify this order, for example the Bottom at the end

Thanks for your help :)

@yarmDev

@yarmDev
Check this issue comment for your reference and see by using Semantics( sortKey: OrdinalSortKey if it helps to achieve your use case.

I have already tried to use the sortKey in the SliverAppBar, it does not change.
I think the sortkeys inside the appBar take over

@yarmDev

@yarmDev
Can you provide a code sample that shows the current behavior along with an expected result you are looking for ?

    SliverAppBar(
      floating: false,
      pinned: true,
      snap: false,
      expandedHeight: getExpandedHeight(),
      leading: canPop(context)
          ? Container(
              margin: const EdgeInsets.all(Dimens.halfSpacing),
              child: AppBarBackButton(
                onPressed: pop(context),
              ))
          : null,
      actionsIconTheme: IconThemeData(
        color: Theme.of(context).colorScheme.onPrimary, //change your color here
      ),
      iconTheme: IconThemeData(
        color: Theme.of(context).colorScheme.onPrimary, //change your color here
      ),
      // status bar brightness
      elevation: 0,
      backgroundColor: Colors.transparent,
      title: AnimatedOpacity(
        duration: const Duration(milliseconds: 300),
        opacity: widget.showSmallBar ? 1.0 : 0.0,
        curve: Curves.ease,
        onEnd: () {
          setState(() {
            renderSmallBar = widget.showSmallBar;
          });
        },
        child: renderSmallBar ? widget.smallBar : null,
      ),
      collapsedHeight: widget.disableCollapse == true ? getExpandedHeight() : null,
      flexibleSpace: BackgroundFlexibleSpaceBar(
        collapseMode: CollapseMode.pin,
        background: Container(
          color: Theme.of(context).colorScheme.background,
          child: AnimatedOpacity(
            duration: const Duration(milliseconds: 300),
            opacity: !widget.showSmallBar ? 1.0 : 0.0,
            curve: Curves.ease,
            onEnd: () {
              setState(() {
                renderSmallBar = widget.showSmallBar;
              });
            },
            child: widget.expandedBar,
          ),
        ),
      ),
      bottom: widget.bottom, //TABS
    );

this is the current behavior:

Enregistrement.de.l.ecran.2022-02-17.a.12.56.53.mov

I would like to be able to select the searchForm after the backButton, it seems more logical to me

@yarmDev

@yarmDev
Have you tried using ExcludeSemantics widget ? You can read more about it here https://api.flutter.dev/flutter/widgets/ExcludeSemantics-class.html and see if it helps to arrange traversal order per your requirement.

In fact I wouldn't want to exclude the bottom.

@yarmDev

@yarmDev
It seems the code you shared has lot of custom implementation, can you provide a runnable code sample that we can directly run and verify ?

Looks like it is the sort key in the appbar that causes issue, we will probably need to investigate how to properly assign sortkey.

fix the issue that can't set app bar traversal order for flexible spa…

This thread has been automatically locked since there has not been any recent activity after it was closed. If you are still experiencing a similar issue, please open a new bug, including the output of flutter doctor -v and a minimal reproduction of the issue.

fix the issue that can't set app bar traversal order for flexible spa…

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AppBar accessibility traversal order #98570

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AppBar accessibility traversal order #98570

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darshankawar commented on Feb 16, 2022

yarmDev commented on Feb 16, 2022

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