17、Flutter Widget - Spacer;

  RowAnd Columnthere can be uniformly allocated to the sub- Widgetattribute mainAxisAlignment.

Row(
   mainAxisAlignment:MainAxisAlignment.spaceAround,
   children:[
    MyBox(),
    MyBox(),
    MyBox()
   ],
 )
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  If you want more personalized achieve sub- Widgetspace allocation can be used Spacer;

Row (
  children:[
    MyBox(),
    Spacer(),
    MyBox(),
    Spacer(),
    MyBox(),
],
)
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  Just add Spacerinstances to the other Widgetbetween, they will expand and create additional space. 1 may be used as the default flexattributes to customize their relative sizes:

Row (
  children:[
    MyBox(),
    Spacer(),
    MyBox(),
    Spacer(flex:3),
    MyBox(),
],
)
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