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How to Remove Unwanted Space in SliverAppBar in Flutter?

I’m experiencing an issue with a SliverAppBar in my Flutter app. There’s an unwanted space in the SliverAppBar that appears in blue color, and I can’t seem to remove it.

Here is a simplified version of my code:Problem Image

SliverAppBar(
              collapsedHeight: 56,
              elevation: 0,
              scrolledUnderElevation: 0,
              backgroundColor: Colors.blue,
              expandedHeight: _appBarHeight,
              floating: false,
              pinned: false,
              systemOverlayStyle: SystemUiOverlayStyle(
                statusBarColor: Colors.black.withOpacity(0.5), // Set the status bar color
                statusBarIconBrightness: Brightness.light, // Set the status bar icon brightness
                statusBarBrightness: Brightness.light, // Set the status bar brightness (for iOS)
              ),
              leading: Container(
                margin: const EdgeInsets.all(8.0),
                decoration: const BoxDecoration(
                  color: Colors.white,
                  shape: BoxShape.circle,
                ),
                child: IconButton(
                  icon: const Icon(Icons.arrow_back, color: Color(0xff333333)),
                  onPressed: () => Navigator.of(context).pop(),
                ),
              ),
              flexibleSpace: FlexibleSpaceBar(
                background: _buildImageCarousel(),
              ),
            ),

I’ve tried adjusting padding and margin properties, but the unwanted space still remains. How can I remove this extra space? Is there a specific property or method I should be using to ensure the SliverAppBar fits correctly without the additional blue space?

Any help or guidance would be greatly appreciated!

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2

Answers


  1. 0

    To remove unwanted space in a SliverAppBar in Flutter, you can customize its properties to ensure it occupies the desired space without any extra padding or margin. Here’s a step-by-step guide to achieve this:

    1.Use expandedHeight: Set the expandedHeight property to control the height of the SliverAppBar when it is fully expanded.

    2.FlexibleSpaceBar Configuration: Use the FlexibleSpaceBar to manage the space within the SliverAppBar. Ensure that you configure the centerTitle and titlePadding properties appropriately.

    3.Padding and Margins: Ensure that no additional padding or margin is added inadvertently to the child widgets inside the SliverAppBar.

    4.SafeArea Considerations: If you are using a SafeArea, check that it doesn’t add extra padding.

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  2. 0

    Try to set fit: BoxFit.Cover for that image represented in the sliver app bar.

    and

    For your carousel slider, you shouldn’t impose any constraints on it, which help to cover all the space in the sliver app bar.

    and try the following:

      background:  Column(
     children:[
       Expanded(
         child : YourCarousel()
        )
      ]
     )
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