How to show SnackBar in Flutter

Question

I want to show a SnackBar Widget when the bottom tab is clicked. I am trying to show it as:

Scaffold.of(context).showSnackBar(new SnackBar(
                cont         


        

Answer 1

Change your _handleBottomNavigationBarTap method to take a BuildContext argument.

void _handleBottomNavigationBarTap(int newValue, BuildContext context) {
  ...
}

Then change your bottomNavigationBar argument as follows:

bottomNavigationBar: new Builder(
  builder: (BuildContext context) {
    return new BottomNavigationBar(
      labels: bottomBarLabels,
      onTap: (index) => _handleBottomNavigationBarTap(index, context),
    );
  }
),

This ensures that you call to Scaffold.of(context) will be able to find a ScaffoldState that is an ancestor of the context.