Android showModalBottomSheet已显示，但showBottomSheet未显示

安卓工作室3.6

class MainScreen extends StatelessWidget {

  @override
  Widget build(BuildContext context) {
    SystemChrome.setSystemUIOverlayStyle(SystemUiOverlayStyle(
        statusBarColor: new Color(Constants.COLOR_PRIMARY_DARK)));
    return new Scaffold(
        body: SafeArea(
            child: SingleChildScrollView(
                child: new Container(
                    margin: const EdgeInsets.only(
                        left: Constants.DEFAULT_MARGIN,
                        right: Constants.DEFAULT_MARGIN,
                        bottom: Constants.DEFAULT_MARGIN),
                    child: new Column(children: [
                      new Padding(
                          padding:
                              EdgeInsets.only(top: Constants.DEFAULT_MARGIN),
                          child: _createProfileContainer(context)),

---

因此，showModalBottomSheet成功展示。但是我需要显示showBottomSheet。我将showModalBottomSheet替换为showModalBottomSheet。因此，showBottomSheet不显示。

您可以复制下面的粘贴运行完整代码
您可以使用

\u scaffoldKey.currentState.showBottomSheet

代码片段

void _showBottomSheetInvoice(BuildContext context) {        
    _scaffoldKey.currentState.showBottomSheet((BuildContext context) {
      return Container(
          child: Column(

工作演示

完整代码

import 'package:flutter/material.dart';
import 'package:flutter/services.dart';

class MainScreen extends StatelessWidget {
  final GlobalKey<ScaffoldState> _scaffoldKey = GlobalKey<ScaffoldState>();

  Widget _createProfileContainer(BuildContext context) {
    return GestureDetector(
        onTap: () {
          _showBottomSheetInvoice(context);
        },
        child: Text("click"));
  }

  void _showBottomSheetInvoice(BuildContext context) {
    //_logger.d("_showBottomSheetInvoice: ");
    _scaffoldKey.currentState.showBottomSheet((BuildContext context) {
      return Container(
          child: Column(
        mainAxisSize: MainAxisSize.min,
        children: <Widget>[
          Padding(
              padding: const EdgeInsets.all(16.0),
              child: Text(
                'Persistent header for bottom bar!',
                textAlign: TextAlign.left,
              )),
          Text(
            'Then here there will likely be some other content '
            'which will be displayed within the bottom bar',
            textAlign: TextAlign.left,
          ),
        ],
      ));
    });
  }

  @override
  Widget build(BuildContext context) {
    SystemChrome.setSystemUIOverlayStyle(
        SystemUiOverlayStyle(statusBarColor: Colors.blue));
    return Scaffold(
        key: _scaffoldKey,
        body: SafeArea(
            child: SingleChildScrollView(
                child: Container(
                    margin: const EdgeInsets.only(left: 4, right: 4, bottom: 4),
                    child: Column(children: [
                      Padding(
                          padding: EdgeInsets.only(top: 4),
                          child: _createProfileContainer(context)),
                    ])))));
  }
}

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: MainScreen(),
    );
  }
}

导入“包装：颤振/材料.省道”；
导入“包：flifter/services.dart”；
类MainScreen扩展了无状态小部件{
最终GlobalKey _scaffoldKey=GlobalKey（）；
小部件_createProfileContainer（BuildContext上下文）{
返回手势检测器(
onTap:（）{
_显示发票（上下文）；
},
子项：文本（“单击”）；
}
void\u showBottomSheetInvoice（BuildContext上下文）{
//_logger.d（“_显示发票：”）；
_scaffoldKey.currentState.showBottomSheet（（构建上下文）{
返回容器(
子：列(
mainAxisSize:mainAxisSize.min，
儿童：[
填充物(
填充：常数边集全部（16.0），
子：文本(
'底部条形图的永久标头！'，
textAlign:textAlign.left，
)),
正文(
“那么这里可能会有其他内容”
'将显示在底部栏中'，
textAlign:textAlign.left，
),
],
));
});
}
@凌驾
小部件构建（构建上下文）{
SystemChrome.SetSystemTimeOverlayStyle(
SystemUIOverlyStyle（statusBarColor:Colors.blue））；
返回脚手架(
钥匙：_scaffoldKey，
正文：安全区(
子：SingleChildScrollView(
子：容器(
边距：仅限常量边集（左：4，右：4，下：4），
子项：列（子项：[
填充物(
填充：仅限边缘设置（顶部：4），
子项：_createProfileContainer（上下文）），
])))));
}
}
void main（）{
runApp（MyApp（））；
}
类MyApp扩展了无状态小部件{
@凌驾
小部件构建（构建上下文）{
返回材料PP(
标题：“颤振演示”，
主题：主题数据(
主样本：颜色。蓝色，
),
主屏幕：主屏幕（），
);
}
}

void _showBottomSheetInvoice(BuildContext context) {        
    _scaffoldKey.currentState.showBottomSheet((BuildContext context) {
      return Container(
          child: Column(

import 'package:flutter/material.dart';
import 'package:flutter/services.dart';

class MainScreen extends StatelessWidget {
  final GlobalKey<ScaffoldState> _scaffoldKey = GlobalKey<ScaffoldState>();

  Widget _createProfileContainer(BuildContext context) {
    return GestureDetector(
        onTap: () {
          _showBottomSheetInvoice(context);
        },
        child: Text("click"));
  }

  void _showBottomSheetInvoice(BuildContext context) {
    //_logger.d("_showBottomSheetInvoice: ");
    _scaffoldKey.currentState.showBottomSheet((BuildContext context) {
      return Container(
          child: Column(
        mainAxisSize: MainAxisSize.min,
        children: <Widget>[
          Padding(
              padding: const EdgeInsets.all(16.0),
              child: Text(
                'Persistent header for bottom bar!',
                textAlign: TextAlign.left,
              )),
          Text(
            'Then here there will likely be some other content '
            'which will be displayed within the bottom bar',
            textAlign: TextAlign.left,
          ),
        ],
      ));
    });
  }

  @override
  Widget build(BuildContext context) {
    SystemChrome.setSystemUIOverlayStyle(
        SystemUiOverlayStyle(statusBarColor: Colors.blue));
    return Scaffold(
        key: _scaffoldKey,
        body: SafeArea(
            child: SingleChildScrollView(
                child: Container(
                    margin: const EdgeInsets.only(left: 4, right: 4, bottom: 4),
                    child: Column(children: [
                      Padding(
                          padding: EdgeInsets.only(top: 4),
                          child: _createProfileContainer(context)),
                    ])))));
  }
}

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: MainScreen(),
    );
  }
}