Answers for "flutter icon with background image"

flutter background image

Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Welcome to Flutter',
      home: Container(
        decoration: BoxDecoration(
            image: DecorationImage(
                image: AssetImage("images/logo.png"), fit: BoxFit.cover)),
        child: Scaffold(),),);

flutter use png as icon

ImageIcon(
     AssetImage("images/icon_more.png"),
     color: Color(0xFF3A5A98),
),