text
stringlengths 1
372
|
|---|
return row( |
children: [ |
flexible( |
child: container( |
color: red, |
child: const text( |
'this is a very long text that won\'t fit the line.', |
style: big, |
), |
), |
), |
flexible( |
child: container( |
color: green, |
child: const text( |
'goodbye!', |
style: big, |
), |
), |
), |
], |
); |
} |
} |
////////////////////////////////////////////////// |
class example28 extends example { |
const example28({super.key}); |
@override |
final code = 'scaffold(\n' |
' body: container(color: blue,\n' |
' child: column(\n' |
' children: [\n' |
' Text(\'Hello!\'),\n' |
' Text(\'Goodbye!\')])))'; |
@override |
final string explanation = |
'the screen forces the scaffold to be exactly the same size as the screen, ' |
'so the scaffold fills the screen.' |
'\n\n' |
'the scaffold tells the container that it can be any size it wants, but not bigger than the screen.' |
'\n\n' |
'when a widget tells its child that it can be smaller than a certain size, ' |
'we say the widget supplies "loose" constraints to its child. more on that later.'; |
@override |
widget build(BuildContext context) { |
return scaffold( |
body: container( |
color: blue, |
child: const column( |
children: [ |
Text('Hello!'), |
Text('Goodbye!'), |
], |
), |
), |
); |
} |
} |
////////////////////////////////////////////////// |
class example29 extends example { |
const example29({super.key}); |
@override |
final code = 'scaffold(\n' |
' body: container(color: blue,\n' |
' child: SizedBox.expand(\n' |
' child: column(\n' |
' children: [\n' |
' Text(\'Hello!\'),\n' |
' Text(\'Goodbye!\')]))))'; |
@override |
final string explanation = |
'if you want the scaffold\'s child to be exactly the same size as the scaffold itself, ' |
'you can wrap its child with SizedBox.expand.' |
'\n\n' |
'when a widget tells its child that it must be of a certain size, ' |
'we say the widget supplies "tight" constraints to its child. more on that later.'; |
@override |
widget build(BuildContext context) { |
return scaffold( |
body: SizedBox.expand( |
child: container( |
color: blue, |
child: const column( |
children: [ |
Text('Hello!'), |
Text('Goodbye!'), |
], |
), |
), |
), |
); |
} |
} |
////////////////////////////////////////////////// |
<code_end> |
if you prefer, you can grab the code from |
this GitHub repo. |
the examples are explained in the following sections. |
<topic_end> |
<topic_start> |
Subsets and Splits