flutter_drop_down_menu

Description:

flutter drop down menu

Usage #
DropDownListView(
defaultItemIndex: 0,
items: ['item1', 'item2', 'item3'],
curve: Curves.ease, // opening or exit animation
safeArea: true, // popup will display with safearea, Default: true
physics: const NeverScrollableScrollPhysics() // scrollphysic for popup dropdown menu
elevation: 5, // elevation for popup dropdown
transitionPerPixel: 0.5, // popup menu duration for each pixel, in other word, control speed of popup menu depend on length
iconData: Icons.arrow_drop_down, // icon for dropdown menu
dropdownItemBuilder: (BuildContext context, dynamic value, int index, bool isSelected){
// value => value of specific item
// index => index of item
// isSelected => true when current index was selected
return Container(
width: double.infinity,
padding: const EdgeInsets.symmetric(vertical: 10, horizontal: 15),
child: Text(value, overflow: TextOverflow.ellipsis)
);
},
dropdownButtonBuilder: (context, int index){ // Build dropdown button
// index => index give the current selected index;
return Padding(
padding: const EdgeInsets.symmetric(horizontal: 20, vertical: 10),
child: Text('value ${val[index]}', overflow: TextOverflow.ellipsis)
);
},
onValueChanged: (value, index){ // this function is optional and will called with selection changed.
print("value changed $value");
},
)
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