Answers for "flutter forms dropdown"

6

dropdown flutter

String dropdownValue = 'One';

@override
Widget build(BuildContext context) {
  return DropdownButton<String>(
    value: dropdownValue,
    icon: const Icon(Icons.arrow_downward),
    iconSize: 24,
    elevation: 16,
    style: const TextStyle(
      color: Colors.deepPurple
    ),
    underline: Container(
      height: 2,
      color: Colors.deepPurpleAccent,
    ),
    onChanged: (String? newValue) {
      setState(() {
        dropdownValue = newValue!;
      });
    },
    items: <String>['One', 'Two', 'Free', 'Four']
      .map<DropdownMenuItem<String>>((String value) {
        return DropdownMenuItem<String>(
          value: value,
          child: Text(value),
        );
      })
      .toList(),
  );
}
Posted by: Guest on July-20-2021
0

Drop down input flutter form

var _currencies = [
    "Food",
    "Transport",
    "Personal",
    "Shopping",
    "Medical",
    "Rent",
    "Movie",
    "Salary"
  ];

 FormField<String>(
          builder: (FormFieldState<String> state) {
            return InputDecorator(
              decoration: InputDecoration(
                  labelStyle: textStyle,
                  errorStyle: TextStyle(color: Colors.redAccent, fontSize: 16.0),
                  hintText: 'Please select expense',
                  border: OutlineInputBorder(borderRadius: BorderRadius.circular(5.0))),
              isEmpty: _currentSelectedValue == '',
              child: DropdownButtonHideUnderline(
                child: DropdownButton<String>(
                  value: _currentSelectedValue,
                  isDense: true,
                  onChanged: (String newValue) {
                    setState(() {
                      _currentSelectedValue = newValue;
                      state.didChange(newValue);
                    });
                  },
                  items: _currencies.map((String value) {
                    return DropdownMenuItem<String>(
                      value: value,
                      child: Text(value),
                    );
                  }).toList(),
                ),
              ),
            );
          },
        )
Posted by: Guest on June-11-2021

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