flutter stack示例

double _containerHeight = 120, _imageHeight = 80, _iconTop = 44, _iconLeft = 12, _marginLeft = 110;

@override
Widget build(BuildContext context) {
  return Scaffold(
    backgroundColor: Colors.white,
    body: Stack(
      children: <Widget>[
        Positioned(
          left: 0,
          right: 0,
          height: _containerHeight,
          child: Container(color: Colors.blue),
        ),
        Positioned(
          left: _iconLeft,
          top: _iconTop,
          child: Icon(Icons.settings, color: Colors.white),
        ),
        Positioned(
          right: _iconLeft,
          top: _iconTop,
          child: Icon(Icons.bubble_chart, color: Colors.white),
        ),
        Positioned(
          left: _iconLeft,
          top: _containerHeight - _imageHeight / 2,
          child: ClipOval(child: Image.asset("assets/images/profile.jpg", fit: BoxFit.cover, height: _imageHeight, width: _imageHeight)),
        ),
        Positioned(
          left: _marginLeft,
          top: _containerHeight - (_imageHeight / 2.5),
          child: Text("CopsOnRoad", style: TextStyle(color: Colors.white, fontWeight: FontWeight.w500, fontSize: 18)),
        ),
        Positioned.fill(
          left: _marginLeft,
          top: _containerHeight + (_imageHeight / 4),
          child: Row(
            mainAxisAlignment: MainAxisAlignment.spaceBetween,
            children: <Widget>[
              Column(
                children: <Widget>[
                  Text("2", style: TextStyle(fontWeight: FontWeight.bold)),
                  Text("Gold", style: TextStyle(color: Colors.grey)),
                ],
              ),
              Column(
                children: <Widget>[
                  Text("22", style: TextStyle(fontWeight: FontWeight.bold)),
                  Text("Silver", style: TextStyle(color: Colors.grey)),
                ],
              ),
              Column(
                children: <Widget>[
    Text("28", style: TextStyle(fontWeight: FontWeight.bold)),
                  Text("Bronze", style: TextStyle(color: Colors.grey)),
                ],
              ),
              Container(),
            ],
          ),
        ),
      ],
    ),
  );
}

标签：TextStyle,style,示例,color,Text,flutter,Colors,child,stack
来源： https://blog.csdn.net/computerclass/article/details/115033579