Want to set background color for an icon button? you can wrap your IconButton with Container and use color property to achieve desire output. May Following Example help You.
Here is an example:
child: new IconButton(
icon: new Icon(Icons.search,color: Colors.white,),onPressed: null),
If you like this question & answer and want to contribute, then write your question & answer and email to freewebmentor[@]gmail.com. Your question and answer will appear on FreeWebMentor.com and help other developers.