I'm using the showBottomSheet method to display a bottom sheet in my Flutter app. However, when I wrap my content inside a DraggableScrollableSheet, it blocks interaction with the rest of the screen.

If I remove DraggableScrollableSheet and use a simple Container, background interaction works as expected. However, I need DraggableScrollableSheet because I rely on its snapSizes and snap animation functionality.

Is there a way to allow interaction with the rest of the screen while still using DraggableScrollableSheet inside showBottomSheet?

Any help or workaround would be greatly appreciated!

Example Code:

void _showBottomSheet(BuildContext context) {
  showBottomSheet(
    context: context,
    backgroundColor: Colors.transparent,
    builder: (context) {
      return DraggableScrollableSheet(
        initialChildSize: 0.5,
        minChildSize: 0.2,
        maxChildSize: 1,
        snap: true,
        snapSizes: [0.2, 0.5, 1.0],
        builder: (context, scrollController) {
          return Container(
            decoration: BoxDecoration(
              color: Colors.white,
              borderRadius: BorderRadius.vertical(top: Radius.circular(16)),
            ),
            child: ListView.builder(
              controller: scrollController,
              itemCount: 20,
              itemBuilder: (context, index) {
                return ListTile(title: Text("Item $index"));
              },
            ),
          );
        },
      );
    },
  );
}

I'm using the showBottomSheet method to display a bottom sheet in my Flutter app. However, when I wrap my content inside a DraggableScrollableSheet, it blocks interaction with the rest of the screen.

If I remove DraggableScrollableSheet and use a simple Container, background interaction works as expected. However, I need DraggableScrollableSheet because I rely on its snapSizes and snap animation functionality.

Is there a way to allow interaction with the rest of the screen while still using DraggableScrollableSheet inside showBottomSheet?

Any help or workaround would be greatly appreciated!

Example Code:

void _showBottomSheet(BuildContext context) {
  showBottomSheet(
    context: context,
    backgroundColor: Colors.transparent,
    builder: (context) {
      return DraggableScrollableSheet(
        initialChildSize: 0.5,
        minChildSize: 0.2,
        maxChildSize: 1,
        snap: true,
        snapSizes: [0.2, 0.5, 1.0],
        builder: (context, scrollController) {
          return Container(
            decoration: BoxDecoration(
              color: Colors.white,
              borderRadius: BorderRadius.vertical(top: Radius.circular(16)),
            ),
            child: ListView.builder(
              controller: scrollController,
              itemCount: 20,
              itemBuilder: (context, index) {
                return ListTile(title: Text("Item $index"));
              },
            ),
          );
        },
      );
    },
  );
}

• flutter
• dart
• flutter-animation
• bottom-sheet

Share Improve this question Follow edited Mar 11 at 6:14 Rehan asked Mar 11 at 5:40 RehanRehan 18211 gold badge11 silver badge1212 bronze badges 1

• You can mimic with Stack – Md. Yeasin Sheikh Commented Mar 11 at 6:24

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2 Answers 2

Sorted by: Reset to default 0

In Flutter, when you open a BottomSheet, it typically takes over user interaction, preventing gestures from passing through to the background widgets. However, if you want to keep the background list scrollable while the bottom sheet is open, you can use the showModalBottomSheet with the isScrollControlled: true property and wrap the BottomSheet with a DraggableScrollableSheet. Here's how you can do it:

Using DraggableScrollableSheet

The DraggableScrollableSheet allows the bottom sheet to be partially opened while still allowing interactions with the background list.

Try this and give me feedback that it's Works or Not?

import 'package:flutter/material.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: HomeScreen(),
    );
  }
}

class HomeScreen extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: Text("Scrollable List with Bottom Sheet")),
      body: Stack(
        children: [
          // Background ListView
          ListView.builder(
            itemCount: 50,
            itemBuilder: (context, index) {
              return ListTile(
                title: Text('Item $index'),
              );
            },
          ),

          // Draggable Scrollable Bottom Sheet
          DraggableScrollableSheet(
            initialChildSize: 0.3, // How much it takes initially
            minChildSize: 0.1, // Minimum size when collapsed
            maxChildSize: 0.8, // Maximum height
            builder: (context, scrollController) {
              return Container(
                decoration: BoxDecoration(
                  color: Colors.white,
                  borderRadius: BorderRadius.vertical(top: Radius.circular(20)),
                  boxShadow: [BoxShadow(color: Colors.black26, blurRadius: 10)],
                ),
                child: ListView.builder(
                  controller: scrollController, // Attach the controller
                  itemCount: 20,
                  itemBuilder: (context, index) {
                    return ListTile(
                      title: Text('Bottom Sheet Item $index'),
                    );
                  },
                ),
              );
            },
          ),
        ],
      ),
    );
  }
}

Use ModalBottomSheetRoute

void _showBottomSheet(BuildContext context) {
  showModalBottomSheet(
    context: context,
    backgroundColor: Colors.transparent,
    isDismissible: false, 
    enableDrag: false, 
    isScrollControlled: true, 
    builder: (context) {
      return DraggableScrollableSheet(
        initialChildSize: 0.5,
        minChildSize: 0.2,
        maxChildSize: 1,
        snap: true,
        snapSizes: [0.2, 0.5, 1.0],
        builder: (context, scrollController) {
          return Container(
            decoration: BoxDecoration(
              color: Colors.white,
              borderRadius: BorderRadius.vertical(top: Radius.circular(16)),
            ),
            child: ListView.builder(
              controller: scrollController,
              itemCount: 20,
              itemBuilder: (context, index) {
                return ListTile(title: Text("Item $index"));
              },
            ),
          );
        },
      );
    },
  );
}

Or Use Stack with IgnorePointer

void _showBottomSheet(BuildContext context) {
  showBottomSheet(
    context: context,
    backgroundColor: Colors.transparent,
    builder: (context) {
      return Stack(
        children: [
    
          IgnorePointer(
            ignoring: false,
            child: GestureDetector(
              onTap: () => Navigator.pop(context), 
              behavior: HitTestBehavior.translucent,
            ),
          ),
          DraggableScrollableSheet(
            initialChildSize: 0.5,
            minChildSize: 0.2,
            maxChildSize: 1,
            snap: true,
            snapSizes: [0.2, 0.5, 1.0],
            builder: (context, scrollController) {
              return Container(
                decoration: BoxDecoration(
                  color: Colors.white,
                  borderRadius: BorderRadius.vertical(top: Radius.circular(16)),
                ),
                child: ListView.builder(
                  controller: scrollController,
                  itemCount: 20,
                  itemBuilder: (context, index) {
                    return ListTile(title: Text("Item $index"));
                  },
                ),
              );
            },
          ),
        ],
      );
    },
  );
}