我通过增加打开键盘时子部件的高度来解决这个问题。 MediaQuery.of(context). viewinsets的初始值。底部为0，当键盘聚焦时它会改变。

showModalBottomSheet<void>(
      enableDrag: true,
      isScrollControlled: true,
      context: context,
      builder: (BuildContext context) {
        return Card(
          color: Colors.white,
          child: Container(
            height: MediaQuery.of(context).size.height / 2 +
                MediaQuery.of(context).viewInsets.bottom,
            child: Column(
              children: <Widget>[
                TextField(),
                TextField(),
              ],
            ),
          ),
        );
      },
    );

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

更新2021年5月扑动2.2! 现在你需要给底部填充。下面写的是一个错误。

更新2020 !

这个答案是正确的，但是你现在不需要给底部填充! 找到并删除这一行:

填充:MediaQuery.of .viewInsets(上下文)

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>
             ),)),)

简单的解决方案，你可以自定义这个:

Container(
          margin: EdgeInsets.only(left: 15),
          child: InkWell(
              onTap: () {
                showModalBottomSheet(
                    isScrollControlled : true,
                    context: context,
                    backgroundColor: Colors.transparent,
                    builder: (context) {
                      return Container(
                        padding: EdgeInsets.only(top: 15, left: 15, right: 15, bottom: 10),
                        width: double.infinity,
                        decoration: BoxDecoration(
                          color: AppTheme.leadItemColor1,
                          borderRadius: BorderRadius.only(topLeft: Radius.circular(12), topRight: Radius.circular(12)),
                        ),
                        child: Column(
                          children: [
                            _assignTo(widget.viewModel, context),
                            SizedBox(height: 12,),
                            txtComment(widget.viewModel),
                            SizedBox(height: 12,),
                            CRMButton(
                              title: 'Select',
                              onTap: () async {
                                Navigator.pop(context);
                                await widget.viewModel.updateStatus(7, why: "${ConstantData.lostOptions[_selectedNumber]}");
                              },
                            )
                          ],
                        ),
                      );
                    },
                );
              },
              child: CustomTabBarItem1(
                image: widget.viewModel.leadDetail.success.lStatus == 7 ? 'assets/appimages/LeadDetail/icons-03-01.png' : 'assets/appimages/LeadDetail/icons-04-01.png',
                bottomTitle: 'Lost',
                topTitle: widget.viewModel.leadDetail.success.lStatus > 7 ? 'assets/appimages/LeadDetail/Ellipse 61@2x.png' : widget.viewModel.leadDetail.success.lStatus == 7 ? 'assets/appimages/LeadDetail/Group 486-1.png' : 'assets/appimages/LeadDetail/Ellipse-61@3x.png',
                height : widget.viewModel.leadDetail.success.lStatus == 7 ? "0" : "1",
              )),
        ),

将此添加到路由器链接模态底部表中

 showModalBottomSheet(              
     context: context,
     isScrollControlled: true,
      builder: (BuildContext context) {
      return Messagescr();
      }
    );

在你的脚手架上也去掉这条线:

resizeToAvoidBottomInset : false,