Spacing between the widget. Used with Row and Column.
Example:
Row(
children: [
Container(
height: 60,
width: 60,
color: Colors.blue,
),
Spacer (),
Container(
height: 60,
width: 60,
color: Colors.red,
),
Spacer (),
Container(
height: 60,
width: 60,
color: Colors.green,
),
],
),
Example:
Row(
children: [
Container(
height: 60,
width: 60,
color: Colors.blue,
),
Spacer(flex: 2),
Container(
height: 60,
width: 60,
color: Colors.red,
),
Spacer(flex: 1),
Container(
height: 60,
width: 60,
color: Colors.green,
),
],
),
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