dart - 颤振中的装饰图像模糊(Blurred Decoration Image in Flutter)

Question

I have the background of my app set like so

(我的应用背景如下)

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return new MaterialApp(
      home: new Container(
        decoration: new BoxDecoration(
          image: new DecorationImage(
            image: new ExactAssetImage('assets/lol/aatrox.jpg'),
            fit: BoxFit.cover,
          ),
        ),
        child: new BackdropFilter(filter: new ImageFilter.blur(sigmaX: 600.0, sigmaY: 1000.0)),
        width: 400.0,
      ),
    );
  }
}

I am wanting to blur the DecorationImage, so I added a BackdropFilter to the Container, but I don't see any change.

(我想模糊DecorationImage，所以我向容器添加了一个BackdropFilter，但是没有看到任何变化。)

What am I doiing wrong?

(我在做什么错？)

  ask by ErraticFox translate from so

Answer 1

You could do something like this, by blurring the container child instead.

(您可以通过模糊容器子代来执行类似的操作。)

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return new MaterialApp(
      home: new Container(
        decoration: new BoxDecoration(
          image: new DecorationImage(
            image: new ExactAssetImage('assets/dog.png'),
            fit: BoxFit.cover,
          ),
        ),
        child: new BackdropFilter(
          filter: new ImageFilter.blur(sigmaX: 10.0, sigmaY: 10.0),
          child: new Container(
            decoration: new BoxDecoration(color: Colors.white.withOpacity(0.0)),
          ),
        ),
      ),
    );
  }
}

Screenshot

(屏幕截图)