为了专注于键盘在BottomSheet - Wrap TextField在Padding Widget如下:

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

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>
             ),)),)

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

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

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

    return SingleChildScrollView(
      child: Container(
        padding:
            EdgeInsets.only(bottom: MediaQuery.of(context).viewInsets.bottom),
        child: Padding(
          padding: const EdgeInsets.all(15.0), // content padding
          child: Container())});

注意:这一行完成了所有的魔术

把它添加到你的底页的最后一个小部件之后

Padding(padding: EdgeInsets.only(bottom:MediaQuery.of(context).viewInsets.bottom))