I've a Material
widget to wrap a MaterialButton
to make border radius, but I can't set the width
attribute to it. I tried use a SizedBox
but not works, the Material
widget keep using all space of screen.
Code:
return new SizedBox(
width: 40,
child: Material(
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(22.0)),
elevation: 18.0,
color: Color(0xFF801E48),
clipBehavior: Clip.antiAlias,
child: MaterialButton(
materialTapTargetSize: MaterialTapTargetSize.shrinkWrap,
height: 30.0,
child: new Text('Sair',
style:
new TextStyle(fontSize: 16.0, color: Colors.white)),
),
),
);
Result:
Clearly it not have 40.0 of width size.
A better approach is using Container widget. When you need to change width, height or add padding/margin to any widget you should wrap the target widget into a container. The container widget is for this kind of job.
Container(
width: myWidthValue, // Container child widget will get this width value
height: myHeghtValue, // Container child widget will get this height value
padding: allowPaddingToo, // padding is allowed too
child: Material(
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(22.0)),
elevation: 18.0,
color: Color(0xFF801E48),
clipBehavior: Clip.antiAlias, // Add This
child: MaterialButton(
materialTapTargetSize: MaterialTapTargetSize.shrinkWrap,
height: 30.0,
child: new Text('Sair',
style:
new TextStyle(fontSize: 16.0, color: Colors.white)),
onPressed: () {
setState(() {
_isNeedHelp = false;
});
},
),
),
);
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