如果你还没有找到你的问题。我认为你们在BuilderContext中漏掉了。有时候当你实现modalBottomSheet时，它只会给你context参数。用BuildContext添加context。

 builder: (BuildContext context) {  //-Here is your issue add BuilderContext class name as it as 
          return Padding(
            padding: MediaQuery.of(context).viewInsets,
            child: SingleChildScrollView(
              child: Padding(
                padding: EdgeInsets.only(bottom: MediaQuery.of(context).viewInsets.bottom),
                child: new Container(

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)), ), ]), ], ), ), ); } }

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>
             ),)),)

用脚手架小部件包装表单，然后用SingleChildScrollView包装TextFormField:

 return Container(
          height: screenHeight * .66,
          child: Scaffold(
             body: Form(
               key: _form,
               child: SingleChildScrollView(
                 child:TextFormField()
               )
              )
             )
           )

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
            ],
          ),
        ),
      )
    ),
  )
);

要修复此问题

你所需要的就是使用MediaQuery.of(context).viewInsets.bottom填充键盘 为了更保险，设置底部表格对话框的isScrollControlled = true，这将允许底部表格获得所需的全部高度。

请注意

如果您的BottomSheetModel是Column，请确保添加mainAxisSize: mainAxisSize。Min，否则床单会覆盖整个屏幕。 工作与多个TextField或TextFormField

例子

showModalBottomSheet(
        shape: RoundedRectangleBorder(
            borderRadius: BorderRadius.vertical(top: Radius.circular(25.0))),
        backgroundColor: Colors.black,
        context: context,
        isScrollControlled: true,
        builder: (context) => Padding(
          padding: EdgeInsets.only(
                        bottom: MediaQuery.of(context).viewInsets.bottom),
          child: Column(
                crossAxisAlignment: CrossAxisAlignment.start,
                mainAxisSize: MainAxisSize.min,
                children: <Widget>[
                  Padding(
                    padding: const EdgeInsets.symmetric(horizontal: 12.0),
                    child: Text('Enter your address',
                        style: TextStyles.textBody2),
                  ),
                  SizedBox(
                    height: 8.0,
                  ),
                  TextField(
                      decoration: InputDecoration(
                        hintText: 'adddrss'
                      ),
                      autofocus: true,
                      controller: _newMediaLinkAddressController,
                    ),
                  

                  SizedBox(height: 10),
                ],
              ),
        ));

请注意:

shape: RoundedRectangleBorder(
        borderRadius: BorderRadius.vertical(top: Radius.circular(25.0))),

这不是必须的。只是我要创建一个圆形的底页。

更新

Flutter 2.2又打破了改动!”现在你需要再次给底部填充，这样键盘就不会重叠在底部。