how to display random number in flutter

Question

I need to display a random number in flutter using a function, but when i call it i get error.

 void generateRandomNumber() {
                        setState(() {
                          point=pointValue[new Random().nextInt(pointValue.length)];
                        });
                        }

the error is when i call it does not give any result on my app screen — MrFlutter
– MrFlutter, Commented Jun 28, 2020 at 11:55
I am assuming pointValue is your list, do you have any item there? — Jitesh Mohite
– Jitesh Mohite, Commented Jun 28, 2020 at 11:55
yes here is the declaration of list List<int> pointValue = [5,6,7,8,10,15]; — MrFlutter
– MrFlutter, Commented Jun 28, 2020 at 11:58
I want to turn this void method to function that return a number on my screen, and i'm very thankful for your time — MrFlutter
– MrFlutter, Commented Jun 28, 2020 at 11:59

Jitesh Mohite · Accepted Answer · 2020-06-28 11:59:59Z

2

Return int value from your method which generated by Random class

 List<int> pointValue = [5,6,7,8,10,15];
  
  int generateRandomNumber() {
    return pointValue[new Random().nextInt(pointValue.length)];
  }

answered Jun 28, 2020 at 11:59

Jitesh Mohite

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6 Comments

MrFlutter Over a year ago

Thaaanks a lot, i change the code like you but when i call generateRandomNumber() i get the error 'The element type 'int' can't be assigned to the list type 'Widget'.'

MrFlutter Over a year ago

generateRandomNumber(); Center( child:Text( 'elements', style: TextStyle( color: Colors.yellowAccent, fontWeight: FontWeight.bold, fontSize: 16, fontFamily: 'muso', decoration: TextDecoration.underline), ), )

Jitesh Mohite Over a year ago

generateRandomNumber().toString() instead of 'elements'.

MrFlutter Over a year ago

Thaaaaaank you you save my day

MrFlutter Over a year ago

Hi, can you help me please i have a problem that i don't know how can i get the result that i get on this screen to another screen.

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