scrollable_bottom_sheet 0.2.1

Scrollable Bottom Sheet #

This is a temporary workaround to achieve Scrollable Persistent Bottom Sheet that i created.

Installation #

First, add scrollable_bottom_sheet as a dependency in your pubspec.yaml file.

scrollable_bottom_sheet: ^0.2.1

## Notes

For version ^0.2.0 and later is AndroidX compatible version
For version below 0.1.0+2 is AndroidX incompatible version

I haven't refactor this plugin to Flutter 1.2.1, so maybe if you're using Flutter 1.2.1 this may cause errors

Feel free to fork this if you want to customize or refactor to Flutter 1.2.1

Example #

class _BottomSheetDemoState extends State<BottomSheetDemo> with TickerProviderStateMixin {
  bool _bottomSheetActive = false;
  String _currentState = "initial";
  String _currentDirection = "up";
  final controller = ScrollableController();

  void _showMessage(BuildContext context) {
    showDialog<void>(
      context: context,
      builder: (BuildContext context) {
        return AlertDialog(
          content: const Text('You tapped the floating action button.'),
          actions: <Widget>[
            FlatButton(
                onPressed: () {
                  Navigator.pop(context);
                },
                child: const Text('OK'))
          ],
        );
      },
    );
  }

  final GlobalKey<ScaffoldState> _scaffoldKey = new GlobalKey<ScaffoldState>();

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      key: _scaffoldKey,
      appBar: AppBar(
        title: const Text('Persistent bottom sheet'),
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: () {
          _showMessage(context);
        },
        backgroundColor: Colors.redAccent,
        child: const Icon(
          Icons.add,
          semanticLabel: 'Add',
        ),
      ),
      body: Builder(
        builder: (BuildContext context) {
          return Column(children: [
            Expanded(
                child: Center(
                    child: RaisedButton(
                        onPressed: _bottomSheetActive
                            ? null
                            : () {
                                setState(() {
                                  //disable button
                                  _bottomSheetActive = true;
                                });
                                _showBottomSheet(context);
                              },
                        child: const Text('Show bottom sheet')))),
            Expanded(
                child: Center(
                    child: RaisedButton(
                        onPressed: () {
                          Navigator.push(context, MaterialPageRoute(builder: (context) => AnotherScrollable()));
                        },
                        child: const Text('Show bottom sheet')))),
          ]);
        },
      ),
    );
  }

  Widget _bottomSheetBuilder(BuildContext context) {
    final ThemeData themeData = Theme.of(context);

    return Stack(children: [
      ScrollableBottomSheet(
        controller: controller,
        halfHeight: 250.0,
        minimumHeight: 50.0,
        autoPop: false,
        scrollTo: ScrollState.minimum,
        snapAbove: false,
        snapBelow: false,
        callback: (state) {
          if (state == ScrollState.minimum) {
            _currentState = "minimum";
            _currentDirection = "up";
          } else if (state == ScrollState.half) {
            if (_currentState == "minimum") {
              _currentDirection = "up";
            } else {
              _currentDirection = "down";
            }
            _currentState = "half";
          } else {
            _currentState = "full";
            _currentDirection = "down";
          }
        },
        child: Container(
            color: Colors.greenAccent,
            margin: EdgeInsets.only(bottom: 50.0),
            child: Padding(
                padding: const EdgeInsets.all(32.0),
                child: Column(children: [
                  InkWell(
                    child: Container(color: Colors.red, height: 57.0),
                    onTap: () {
                      controller.animateToZero(context, willPop: true);
                    },
                  ),
                  Text('This is a Material persistent bottom sheet. Drag downwards to dismiss it.',
                      textAlign: TextAlign.center, style: TextStyle(color: themeData.accentColor, fontSize: 24.0)),
                  Column(
                      children: List.generate(100, (index) {
                    return Text("Text $index");
                  }))
                ]))),
      ),
      Positioned(
          bottom: 0.0,
          left: 0.0,
          right: 0.0,
          height: 50.0,
          child: Material(
            elevation: 15.0,
            child: IconButton(
                icon: Icon(Icons.location_on),
                onPressed: () {
                  if (_currentState == "half") {
                    if (_currentDirection == "up") {
                      controller.animateToFull(context);
                    } else {
                      controller.animateToMinimum(context);
                    }
                  } else {
                    controller.animateToHalf(context);
                  }
                }),
          ))
    ]);
  }

  _showBottomSheet(BuildContext context) {
    showBottomSheet<void>(context: context, builder: _bottomSheetBuilder).closed.whenComplete(() {
      if (mounted) {
        setState(() {
          // re-enable the button
          _bottomSheetActive = false;
        });
      }
    });
  }
}

0.2.1 #

  • Cancel drag when not full height (by joserocha3)

0.2.0+1 #

  • Updating README

0.2.0 #

  • Upgrade to AndroidX

0.1.0+2 #

  • Latest non-AndroidX version
  • Fix error with no controller in ScrollableBottomSheet

0.1.0+1 #

  • Change ScrollableBottomSheetState to be private since there's no need to create GlobalKey anymore

0.1.0 #

  • Change communication type between parent and bottom sheet from GlobalKey to ScrollableController

0.0.9 #

  • Minor bug Fixes

0.0.8 #

  • Scroll smoothness improved, add new feature measure minimum and half height by content

0.0.7 #

  • Bug Fixes

0.0.6 #

  • Fling scroll feature added

0.0.5 #

  • Bug Fixes, add callback feature, and renaming some

0.0.4 #

  • Bug Fixes

0.0.3 #

  • Minimum feature and animation control from the outside added

0.0.2 #

  • Bug fixes and snap feature added

0.0.1 #

  • Initial release.

example/README.md

import 'package:flutter/material.dart';
import 'package:scrollable_bottom_sheet/scrollable_bottom_sheet.dart';
import 'package:scrollable_bottom_sheet/scrollable_controller.dart';
import 'package:scrollable_bottom_sheet_example/another_scrollable.dart';

void main() => runApp(MyApp());

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

class BottomSheetDemo extends StatefulWidget {
  @override
  _BottomSheetDemoState createState() => _BottomSheetDemoState();
}

class _BottomSheetDemoState extends State<BottomSheetDemo> with TickerProviderStateMixin {
  bool _bottomSheetActive = false;
  String _currentState = "initial";
  String _currentDirection = "up";
  final controller = ScrollableController();

  void _showMessage(BuildContext context) {
    showDialog<void>(
      context: context,
      builder: (BuildContext context) {
        return AlertDialog(
          content: const Text('You tapped the floating action button.'),
          actions: <Widget>[
            FlatButton(
                onPressed: () {
                  Navigator.pop(context);
                },
                child: const Text('OK'))
          ],
        );
      },
    );
  }

  final GlobalKey<ScaffoldState> _scaffoldKey = new GlobalKey<ScaffoldState>();

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      key: _scaffoldKey,
      appBar: AppBar(
        title: const Text('Persistent bottom sheet'),
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: () {
          _showMessage(context);
        },
        backgroundColor: Colors.redAccent,
        child: const Icon(
          Icons.add,
          semanticLabel: 'Add',
        ),
      ),
      body: Builder(
        builder: (BuildContext context) {
          return Column(children: [
            Expanded(
                child: Center(
                    child: RaisedButton(
                        onPressed: _bottomSheetActive
                            ? null
                            : () {
                                setState(() {
                                  //disable button
                                  _bottomSheetActive = true;
                                });
                                _showBottomSheet(context);
                              },
                        child: const Text('Show bottom sheet')))),
            Expanded(
                child: Center(
                    child: RaisedButton(
                        onPressed: () {
                          Navigator.push(context, MaterialPageRoute(builder: (context) => AnotherScrollable()));
                        },
                        child: const Text('Show bottom sheet')))),
          ]);
        },
      ),
    );
  }

  Widget _bottomSheetBuilder(BuildContext context) {
    final ThemeData themeData = Theme.of(context);

    return Stack(children: [
      ScrollableBottomSheet(
        controller: controller,
        halfHeight: 250.0,
        minimumHeight: 50.0,
        autoPop: false,
        scrollTo: ScrollState.minimum,
        snapAbove: false,
        snapBelow: false,
        callback: (state) {
          if (state == ScrollState.minimum) {
            _currentState = "minimum";
            _currentDirection = "up";
          } else if (state == ScrollState.half) {
            if (_currentState == "minimum") {
              _currentDirection = "up";
            } else {
              _currentDirection = "down";
            }
            _currentState = "half";
          } else {
            _currentState = "full";
            _currentDirection = "down";
          }
        },
        child: Container(
            color: Colors.greenAccent,
            margin: EdgeInsets.only(bottom: 50.0),
            child: Padding(
                padding: const EdgeInsets.all(32.0),
                child: Column(children: [
                  InkWell(
                    child: Container(color: Colors.red, height: 57.0),
                    onTap: () {
                      controller.animateToZero(context, willPop: true);
                    },
                  ),
                  Text('This is a Material persistent bottom sheet. Drag downwards to dismiss it.',
                      textAlign: TextAlign.center, style: TextStyle(color: themeData.accentColor, fontSize: 24.0)),
                  Column(
                      children: List.generate(100, (index) {
                    return Text("Text $index");
                  }))
                ]))),
      ),
      Positioned(
          bottom: 0.0,
          left: 0.0,
          right: 0.0,
          height: 50.0,
          child: Material(
            elevation: 15.0,
            child: IconButton(
                icon: Icon(Icons.location_on),
                onPressed: () {
                  if (_currentState == "half") {
                    if (_currentDirection == "up") {
                      controller.animateToFull(context);
                    } else {
                      controller.animateToMinimum(context);
                    }
                  } else {
                    controller.animateToHalf(context);
                  }
                }),
          ))
    ]);
  }

  _showBottomSheet(BuildContext context) {
    showBottomSheet<void>(context: context, builder: _bottomSheetBuilder).closed.whenComplete(() {
      if (mounted) {
        setState(() {
          // re-enable the button
          _bottomSheetActive = false;
        });
      }
    });
  }
}

Use this package as a library

1. Depend on it

Add this to your package's pubspec.yaml file:


dependencies:
  scrollable_bottom_sheet: ^0.2.1

2. Install it

You can install packages from the command line:

with Flutter:


$ flutter pub get

Alternatively, your editor might support flutter pub get. Check the docs for your editor to learn more.

3. Import it

Now in your Dart code, you can use:


import 'package:scrollable_bottom_sheet/scrollable_bottom_sheet.dart';
  
Popularity:
Describes how popular the package is relative to other packages. [more]
83
Health:
Code health derived from static analysis. [more]
100
Maintenance:
Reflects how tidy and up-to-date the package is. [more]
100
Overall:
Weighted score of the above. [more]
91
Learn more about scoring.

We analyzed this package on Jul 17, 2019, and provided a score, details, and suggestions below. Analysis was completed with status completed using:

  • Dart: 2.4.0
  • pana: 0.12.19
  • Flutter: 1.7.8+hotfix.3

Platforms

Detected platforms: Flutter

References Flutter, and has no conflicting libraries.

Health suggestions

Format lib/scrollable_bottom_sheet.dart.

Run flutter format to format lib/scrollable_bottom_sheet.dart.

Format lib/scrollable_controller.dart.

Run flutter format to format lib/scrollable_controller.dart.

Dependencies

Package Constraint Resolved Available
Direct dependencies
Dart SDK >=2.0.0-dev.68.0 <3.0.0
flutter 0.0.0
Transitive dependencies
collection 1.14.11
meta 1.1.6 1.1.7
sky_engine 0.0.99
typed_data 1.1.6
vector_math 2.0.8

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