builder: (context, state) {
          if(state.status == RecievingState.success && state.userData != null){
            return  Column(
            children: [  Vibration.vibrate(); //error
            ],)
            },
            }

as soon as the data is changed from API. I want the phone to vibrate within same page...

CodePudding user response：

If you like vibrate every time the if condition get satisfied, you can do :

builder: (context, state) {
     if(state.status == RecievingState.success && state.userData != null){
        Vibration.vibrate();
        return  Column(
          children: [  

You can add another bool to control the vibrate on the build method.

If you like to check the state, Use FutureBuilder.

CodePudding user response：

Column children should be widget only like this

Column(
children: <Widget>[
const Text('hello'),
const Text('world'),
] )

if you want to use vibrate please refer