Flutter tricks and tips 1

full size container

SizedBox.expand(
  child: Container(
    child:Text('full size container')
  )
)

blur decoration of a container

Container(
  decoration: const BoxDecoration(
    image: DecorationImage(
      image: AssetImage(
        "assets/images/start_screen_bk.png",
      ),
      fit: BoxFit.fitHeight,
    ),
  ),
  child: BackdropFilter(
    filter: ImageFilter.blur(sigmaX: 10.0, sigmaY: 10.0),
    child: Container(
      decoration: BoxDecoration(color: Colors.white.withOpacity(0.0)),
      child: YourChildWidgetHere,
    ),
  ),
)