包:https://pub.dev/packages/modal_bottom_sheet

将小部件包装到Padding中，并像这样设置Padding ==>

padding: MediaQuery.of(context).viewInsets // viewInsets will decorate your screen

你可以使用 showMaterialModalBottomSheet或showModalBottomSheet或showCupertinoModalBottomSheet

showModalBottomSheet(
        context: context,
        barrierColor: popupBackground,
        isScrollControlled: true, // only work on showModalBottomSheet function
        shape: RoundedRectangleBorder(
            borderRadius: BorderRadius.only(
                topLeft: Radius.circular(borderRadiusMedium),
                topRight: Radius.circular(borderRadiusMedium))),
        builder: (context) =>  Padding(
            padding: MediaQuery.of(context).viewInsets,
            child: Container(
                   height: 400, //height or you can use Get.width-100 to set height
                   child: <Your Widget here>
             ),)),)

试试这个

我的解决方案是

使用isScrollControlled: true 添加填充 填充:EdgeInsets。只有(底:MediaQuery.of(上下文).viewInsets.bottom) 在SingleChildScrollView中包装布局

示例代码

Future<void> future = showModalBottomSheet(
  context: context,
  isDismissible: true,
  isScrollControlled: true,
  backgroundColor: Colors.white.withOpacity(0.2),
  builder: (context) => SingleChildScrollView(
    child: GestureDetector(
      child: Padding(
        padding: EdgeInsets.only(
          bottom: MediaQuery.of(context).viewInsets.bottom
        ),
        child: Container(
          width: MediaQuery.of(context).size.width,
          height: MediaQuery.of(context).size.height,
          child: Column(
            children: <Widget>[
              // add your widget here
            ],
          ),
        ),
      )
    ),
  )
);

在结合不同的解决方案后，我得到了这个:

如果你不想全屏，也不想使用填充

  showModalBottomSheet(
      context: context,
      shape: RoundedRectangleBorder(
        borderRadius: BorderRadius.vertical(top: Radius.circular(20)),
      ),
      enableDrag: true,
      isDismissible: true,
      useRootNavigator: true,
      builder: (BuildContext ctx) {
        return Scaffold( // use CupertinoPageScaffold for iOS
          backgroundColor: Colors.transparent,
          resizeToAvoidBottomInset: true, // important
          body: SingleChildScrollView(
            child: Form(
              child: Container(
                child: Column(
                  crossAxisAlignment: CrossAxisAlignment.stretch,
                  children: <Widget>[
                    TextFormField(),
                    TextFormField(),
                  ],
                ),
              ),
            ),
          ),
        );
      },
    );

在Flutter(通道母版，v1.15.3-pre。37，适用于Mac OS X 10.15.2 19C57, locale en-US)

不要在构建器中使用builder:(BuildContext context){}，而是使用builder: (context) {}

有了这个解决方案，我的模态底部表坚持状态栏(行为像脚手架与resizeToAvoidBottomInset: false)，并允许查看所有的表单字段和滚动的形式，如果它仍然需要查看底部文本字段。

要了解更多细节，这里是我找到解决方案的链接- https://github.com/flutter/flutter/issues/18564#issuecomment-602604778

你应该用这个，

showModalBottomSheet(
    isScrollControlled: true,
    context: context,
    shape: RoundedRectangleBorder(
      // <-- for border radius
      borderRadius: BorderRadius.only(
        topLeft: Radius.circular(10.0),
        topRight: Radius.circular(10.0),
      ),
    ),
    builder: (BuildContext context) {
      return SingleChildScrollView(
        padding:
            EdgeInsets.only(bottom: MediaQuery.of(context).viewInsets.bottom),
        child: drunkenWidget()...

//BTW, Never ever Drink

import 'dart:async'; import 'dart:ui'; import 'package:flutter/foundation.dart'; import 'package:flutter/widgets.dart'; import 'package:flutter/material.dart'; import '../weight/boostrap/flutter_bootstrap.dart'; import '../weight/boostrap/bootstrap_widgets.dart'; /* TextEditingController txtname = TextEditingController(); showModalBottomSheet( context: context, isScrollControlled: true, shape: const RoundedRectangleBorder( borderRadius: BorderRadius.only( topLeft: Radius.circular(20), topRight: Radius.circular(20), ), ), builder: (context) => SingleChildScrollView( padding: EdgeInsets.only( bottom: MediaQuery.of(context).padding.bottom), child: new AddItem( tektk: 'Category', tektd: 'Add', txtname: txtname, ismultik:false, onPressed: () {}), ), ); */ class AddItem extends StatelessWidget { const AddItem( {Key? key, required this.ismultik, required this.tektd, required this.tektk, required this.txtname, required this.onPressed}) : super(key: key); final bool ismultik; final String tektk; final String tektd; final VoidCallback? onPressed; final TextEditingController txtname; @override Widget build(BuildContext context) { final MediaQueryData mediaQueryData = MediaQuery.of(context); bootstrapGridParameters(gutterSize: 10); return Padding( padding: mediaQueryData.viewInsets, child: Container( padding: EdgeInsets.only(bottom: 90.0, left: 10.0, right: 10.0), child: Column( crossAxisAlignment: CrossAxisAlignment.stretch, mainAxisAlignment: MainAxisAlignment.spaceBetween, children: [ ListTile( trailing: SizedBox.fromSize( size: Size(35, 35), child: ClipOval( child: Material( color: Colors.indigo, child: InkWell( splashColor: Colors.white, onTap: () { Navigator.pop(context); }, child: Column( mainAxisAlignment: MainAxisAlignment.center, children: <Widget>[ Icon(Icons.close, color: Colors.white), ], ), ), ), ), ), ), BootstrapRow(height: 0, children: [ BootstrapCol( sizes: 'col-md-12', child: TextField( style: TextStyle(color: Colors.black), decoration: new InputDecoration( border: new OutlineInputBorder( borderSide: new BorderSide(color: Colors.white)), labelText: tektk, ), keyboardType: ismultik == true ? TextInputType.multiline : TextInputType.text, maxLines: null, minLines: 1, controller: txtname, ), ), BootstrapCol( sizes: 'col-md-12', child: ElevatedButton( style: ElevatedButton.styleFrom( primary: Colors.green, // background onPrimary: Colors.white, // foreground ), onPressed: onPressed, child: Text(tektd)), ), ]), ], ), ), ); } }