添加:

isScrollControlled: true表示showModalBottomSheet 填充:MediaQuery.of(上下文)。viewInsets为生成器中的小部件 列/换行都可以

showModalBottomSheet<void>(
  isScrollControlled: true,
  context: context,
  shape: RoundedRectangleBorder(
    borderRadius: BorderRadius.only(
        topLeft: Radius.circular(30.0),
        topRight: Radius.circular(30.0)),
  ),
  builder: (BuildContext context) {
    return Padding(
        padding: MediaQuery.of(context).viewInsets,
        child: Container(
            child: Wrap(
          children: <Widget>[
            TextField(
              decoration: InputDecoration(
                  border: InputBorder.none,
                  hintText: 'Enter a search term'),
            ),
            TextField(
              decoration: InputDecoration(
                  border: InputBorder.none,
                  hintText: 'Enter a search term'),
            ),
            TextField(
              decoration: InputDecoration(
                  border: InputBorder.none,
                  hintText: 'Enter a search term'),
            ),
            TextField(
              decoration: InputDecoration(
                  border: InputBorder.none,
                  hintText: 'Enter a search term'),
            )
          ],
        )));
  },
);

更新2020年2月25日更好的解决方案

showModalBottomSheet(
 isScrollControlled: true,
 builder: (BuildContext context) {

    return SingleChildScrollView(
      child: Container(
        padding:
            EdgeInsets.only(bottom: MediaQuery.of(context).viewInsets.bottom),
        child: Padding(
          padding: const EdgeInsets.fromLTRB(20.0, 20.0, 20.0, 0.0), // content padding
          child: Form(...)) // From with TextField inside


});

showModalBottomSheet(
      shape: RoundedRectangleBorder(
        borderRadius: BorderRadius.circular(15.0),
      ),
      context: context,
      isScrollControlled: true,
      builder: (builder) {
        return Container(
          height: MediaQuery.of(context).size.height - 40,
          padding: MediaQuery.of(context).viewInsets,
          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
            ],
          ),
        ),
      )
    ),
  )
);

如果你有全屏或固定大小的showModalBottomSheet，不要使用填充，这不会解决你的问题。使用边距代替填充，就像这样:

  showModalBottomSheet(
          context: context,
          builder: (context) {
            return Container(
                marign: EdgeInsets.only(
                    bottom: MediaQuery.of(context).viewInsets.bottom),
                child: TextField()
            );
          }); 

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,
            

只需添加

if (_isEditing) SizedBox(height: MediaQuery.of(context).viewInsets.bottom),

在键盘和隐藏所有其他内容下面的文本框与

if (!_isEditing) Widget(...),