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Как сделать не прокручиваемый заголовок и прокручиваемый корпус во флаттере?

Мне кажется, нужно DataFrameGroupBy.agg со словарем столбцов со списками функций, get MultiIndex, поэтому необходимо сгладить map и последние rename столбцы: 

d = {'BeginDate':['first','last', 'size'],
     'start_price':['first','last'], 
     'agr_signal':'first'}

df = df.groupby('agr_group').agg(d)
df.columns = df.columns.map('_'.join)

d = {'BeginDate_first':'BeginDate1',
     'BeginDate_last':'EndDate1',
     'BeginDate_size':'Consecutive1',
     'start_price_first':'start_price1',
     'start_price_last':'end_price1',
     'agr_signal_first':'agr_signal1'}
df = df.reset_index().rename(columns=d)
print (df)
   agr_group BeginDate1   EndDate1  Consecutive1  start_price1  end_price1  \
0        1.0 2018-03-22 2018-04-07             3      0.000997    0.000795   
1        2.0 2018-04-09 2018-04-09             1      0.000713    0.000713   
2        3.0 2018-04-12 2018-04-12             1      0.000876    0.000876   
3        4.0 2018-04-21 2018-04-21             1      0.004250    0.004250   

   agr_signal1  
0           -1  
1            0  
2            1  
3           -1

-1
задан Nick 19 January 2019 в 14:32
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1 ответ

Вы должны использовать appBar: AppBar(... внутри своей эшафот. Поэтому MaterialApp-> Scaffold -> (AppBar и listview).

Пример кода: 

import 'package:flutter/material.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: Text("This is the title"),
        ),
        body: ListView(
          children: <Widget>[
            Text("This is text 1"),
            Text("This is text 2"),
            Text("This is text 3"),
            Text("This is text 4"),
            Text("This is text 5"),
            Text("This is text 6"),
            Text("This is text 7"),
            Text("This is text 8"),
            Text("This is text 9"),
            Text("This is text 10"),
            Text("This is text 11"),
            Text("This is text 12"),
            Text("This is text 13"),
            Text("This is text 14"),
            Text("This is text 15"),
            Text("This is text 15"),
            Text("This is text 15"),
            Text("This is text 15"),
            Text("This is text 15"),
            Text("This is text 15"),
            Text("This is text 15"),
            Text("This is text 15"),
            Text("This is text 15"),
            Text("This is text 15"),
            Text("This is text 15"),
            Text("This is text 15"),
            Text("This is text 15"),
            Text("This is text 15"),
            Text("This is text 15"),
            Text("This is text 15"),
            Text("This is text 15"),
            Text("This is text 15"),
            Text("This is text 15"),
            Text("This is text 15"),
            Text("This is text 15"),
            Text("This is text 15"),
            Text("This is text 15"),
            Text("This is text 15"),
            Text("This is text 15"),
          ],
        ),
      ),
    );
  }
}
0
ответ дан guy 19 January 2019 в 14:32
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