markdown qr_flutter加白色背景

Posted 2021-05-05

...
Stack(
  children: <Widget>[
    Container(
      alignment: Alignment.center,
      margin: EdgeInsets.only(top: 10, bottom: 10),
      child: Container(
        color: Colors.white,
        height: 150.0,
        width: 150.0,
      ),
    ),
    Container(
      alignment: Alignment.center,
      margin: EdgeInsets.only(top: 10, bottom: 10),
      height: 150,
      child: QrImage(
        data: "这里是需要生成二维码的数据",
        onError: (ex) {
          print("[QR] ERROR - $ex");
        },
      ),
    ),
  ],
)
...

![](https://raw.githubusercontent.com/WingCH/Image/master/20190623162218.png)