flutter pass onchanged callback in arguments
class DropdownItem extends StatelessWidget {
final Function(bool) onchangedCallback;
// ....
Checkbox(
onChanged: onchangedCallback,
),flutter pass onchanged callback in arguments
class DropdownItem extends StatelessWidget {
final Function(bool) onchangedCallback;
// ....
Checkbox(
onChanged: onchangedCallback,
),flutter pass onPress function as parameter
int result = 0;
void calculate(num1, num2) {
setState(() {
result = num1 + num2;
});
}
new RaisedButton(
onPressed: () => calculate(1, 100),
...
),
new Text("$result")Copyright © 2021 Codeinu
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