There is bug when using material 3 "Size Error"

[ahmeddarafat]

The navigation bar makes a size error when using material 3

[Leomhl]

The same issue with me

The following assertion was thrown during layout: A RenderFlex overflowed by 43 pixels on the bottom.

The relevant error-causing widget was: DotNavigationBar DotNavigationBar: The overflowing RenderFlex has an orientation of Axis.vertical. The edge of the RenderFlex that is overflowing has been marked in the rendering with a yellow and black striped pattern. This is usually caused by the contents being too big for the RenderFlex.

Consider applying a flex factor (e.g. using an Expanded widget) to force the children of the RenderFlex to fit within the available space instead of being sized to their natural size. This is considered an error condition because it indicates that there is content that cannot be seen. If the content is legitimately bigger than the available space, consider clipping it with a ClipRect widget before putting it in the flex, or using a scrollable container rather than a Flex, like a ListView.

The specific RenderFlex in question is: RenderFlex#08d48 OVERFLOWING ... parentData: offset=Offset(16.0, 12.0) (can use size) ... constraints: BoxConstraints(w=379.4, h=56.0) ... size: Size(379.4, 56.0) ... direction: vertical ... mainAxisAlignment: start ... mainAxisSize: min ... crossAxisAlignment: center ... verticalDirection: down

[danielkiing3]

Currently facing the same issue

BOTTOM OVERFLOWED BY 43 PIXELS

The following assertion was thrown during layout:
A RenderFlex overflowed by 43 pixels on the bottom.

The relevant error-causing widget was:
DotNavigationBar DotNavigationBar:
The overflowing RenderFlex has an orientation of Axis.vertical.
The edge of the RenderFlex that is overflowing has been marked in the rendering with a yellow and black striped pattern. This is usually caused by the contents being too big for the RenderFlex.

Consider applying a flex factor (e.g. using an Expanded widget) to force the children of the RenderFlex to fit within the available space instead of being sized to their natural size.
This is considered an error condition because it indicates that there is content that cannot be seen. If the content is legitimately bigger than the available space, consider clipping it with a ClipRect widget before putting it in the flex, or using a scrollable container rather than a Flex, like a ListView.

Error disappear when I stop using Material3 for theming

[nhCoder]

any progress on the issue . i m also facing this error

[quarc0o]

Also facing the same issue using material 3

[RenTheProgrammer]

A temporary fix for this is adding marginR and paddingR to the NavigationBar like so:

DotNavigationBar(
        marginR: const EdgeInsets.symmetric(vertical: 0, horizontal: 8),
        paddingR: const EdgeInsets.symmetric(vertical: 4, horizontal: 8),
        currentIndex: _currentIndex,
        onTap: _handleIndexChanged,
        dotIndicatorColor: Colors.black,
        items: [
          DotNavigationBarItem(
            icon: Icon(Icons.home),
            selectedColor: Colors.purple,
          ),

          /// Likes
          DotNavigationBarItem(
            icon: Icon(Icons.favorite_border),
            selectedColor: Colors.pink,
          ),

          /// Search
          DotNavigationBarItem(
            icon: Icon(Icons.search),
            selectedColor: Colors.orange,
          ),

          /// Profile
          DotNavigationBarItem(
            icon: Icon(Icons.person),
            selectedColor: Colors.teal,
          ),
        ],
      ),

[reyelahmad]

A temporary fix for this is adding marginR and paddingR to the NavigationBar like so:

DotNavigationBar(
        marginR: const EdgeInsets.symmetric(vertical: 0, horizontal: 8),
        paddingR: const EdgeInsets.symmetric(vertical: 4, horizontal: 8),
        currentIndex: _currentIndex,
        onTap: _handleIndexChanged,
        dotIndicatorColor: Colors.black,
        items: [
          DotNavigationBarItem(
            icon: Icon(Icons.home),
            selectedColor: Colors.purple,
          ),

          /// Likes
          DotNavigationBarItem(
            icon: Icon(Icons.favorite_border),
            selectedColor: Colors.pink,
          ),

          /// Search
          DotNavigationBarItem(
            icon: Icon(Icons.search),
            selectedColor: Colors.orange,
          ),

          /// Profile
          DotNavigationBarItem(
            icon: Icon(Icons.person),
            selectedColor: Colors.teal,
          ),
        ],
      ),

thanks man . love for you

[thedarkknight197]

same issue here

[thedarkknight197]

A temporary fix for this is adding marginR and paddingR to the NavigationBar like so:

DotNavigationBar(
        marginR: const EdgeInsets.symmetric(vertical: 0, horizontal: 8),
        paddingR: const EdgeInsets.symmetric(vertical: 4, horizontal: 8),
        currentIndex: _currentIndex,
        onTap: _handleIndexChanged,
        dotIndicatorColor: Colors.black,
        items: [
          DotNavigationBarItem(
            icon: Icon(Icons.home),
            selectedColor: Colors.purple,
          ),

          /// Likes
          DotNavigationBarItem(
            icon: Icon(Icons.favorite_border),
            selectedColor: Colors.pink,
          ),

          /// Search
          DotNavigationBarItem(
            icon: Icon(Icons.search),
            selectedColor: Colors.orange,
          ),

          /// Profile
          DotNavigationBarItem(
            icon: Icon(Icons.person),
            selectedColor: Colors.teal,
          ),
        ],
      ),

thanks man . love for you

this is working