How to set background color for an icon button?

问题

I want to apply background color for icon button but I don't see an explicit backgroundColor property for it. I want to achieve this:

Currently I was able to achieve till here:

Below is the code so far:

@override
  Widget build(BuildContext context) {

return Scaffold(
    resizeToAvoidBottomPadding: false,
    backgroundColor: Color(0xFF13212C),
    appBar: AppBar(
      title: Text('Demo'),
    ),
    drawer: appDrawer(),
    body: new Center(
    child: new Column(
    crossAxisAlignment: CrossAxisAlignment.stretch,
 //     mainAxisAlignment: MainAxisAlignment.spaceEvenly,
    children: <Widget>[
      new Column(
        children: <Widget>[
       //   new Flexible(
    new TextField(
        style: new TextStyle(
        color: Colors.white,
      fontSize: 16.0),
      cursorColor: Colors.green,
      decoration: new InputDecoration(

        suffixIcon: new IconButton(
            icon: new Image.asset('assets/search_icon_ivory.png'),onPressed: null),

      fillColor: Colors.black,
        contentPadding: new EdgeInsets.fromLTRB(10.0, 20.0, 10.0, 20.0),
        filled: true,
        hintText: 'What Do You Need Help With?',
        hintStyle: new TextStyle(
          color: Colors.white
        )
    )
    )
      //    )
    ]
),

回答1:

you can wrap your IconButton with Container and use color property to achieve desire output. May Following Example help You.

 suffixIcon: Container(
              color: Colors.green,
              child: new IconButton(
                  icon: new Icon(Icons.search,color: Colors.white,),onPressed: null),
            ),

回答2:

You can not do that with IconButton widget yet. Good news is that you may replace it with FlatButton like that:

suffixIcon: new FlatButton(
                      color: Colors.green,
                      disabledColor: Colors.green[100],
                      child: Icon(Icons.search)),

color will be used in case onPressed handler is defined, otherwise it will be rendered with disabledColor background.

回答3:

You can use a Circular Avatar with the radius = text field's height/2 or whatever height you prefer.

To figure out text field specs you can visit material.io

So the chunk of code is going to be like the following:

CircleAvatar(
                radius: 30,
                backgroundColor: Color(0xff94d500),
                child: IconButton(
                  icon: Icon(
                    Icons.search,
                    color: Colors.black,
                  ),
                  onPressed: () {
                    ...
                  },
                ),
              ),

This way you get an Icon button with background color. I hope this can help you guys.

来源：https://stackoverflow.com/questions/52777164/how-to-set-background-color-for-an-icon-button

标签

Flutter

flutter-layout

IconButton