How to blur a specific position in the picture using CustomPainter in flutter

问题

Is it possible to add blur effect to picture using painting? If so, how can I do this?

回答1:

use this :

Stack(
    children: <Widget>[
      YourImageWidget(),
      new BackdropFilter(
        filter: ImageFilter.blur(sigmaX: 3.0, sigmaY: 3.0),
        child: new Container(
          decoration: new BoxDecoration(color: Colors.white.withOpacity(0.0)),
        ),
      ),

    ],
  )

来源：https://stackoverflow.com/questions/60217978/how-to-blur-a-specific-position-in-the-picture-using-custompainter-in-flutter