toolbar method
Implementation
PreferredSize toolbar(BuildContext context) {
return PreferredSize(
child: AppBar(
automaticallyImplyLeading: automaticallyImplyiLeading,
centerTitle: true,
leading: leading,
actions: actions,
elevation: elevation,
title: Text(
titleText ?? '',
),
bottom: bottomWidget,
),
preferredSize: Size.fromHeight(bottomWidget != null
? 140.0
: titleText != null
? 56.0
: 0.0),
);
}