Flutter 小部件内的 FOR 循环

Question

So essentially what I am trying to achieve is this:

But apparently its not allowed in flutter.

I'm trying to load a LIST of restaurant items and their quantity values using a FOR loop and display them unto the app with a text widget. But with the current logic that I used I need to iterate and update the variable of x and range after displaying each item name along with its quantity from their respective lists. The problem here is I can't use the FOR loop within widgets as you would a normal FOR loop where you can place multiple statements within the FOR loop.

The snippet of code below is the logic I'm trying to achieve. It is similar to the code I'm implementing in flutter. The FOR loop portion is the only portion I'm kind of stuck with.

Still kind of new to Flutter, so any help or guidance would be appreciated. Thank you!

void main()
{
 int x =0;
  int range =0;
  
  
  
  List<String> restaurauntNames = ['Jollibee','Chowking','Mcdonalds'];
  
 List<int> orderNumber = [3,2,1];
  
 List<int> itemQuantity = [1,1,2,3,1,3];
  
 List<String> itemName= ['Jolly Spag','Chicken Joy','Peach Mango Pie','Chao Fan','Lauriat','Big Mac'];
  
 
  

  for(String i in restaurauntNames)
  {
    print(i);
    for(int z =0; z!=orderNumber[x];z++)
    {
      print(itemName[z+range]+'---------------'+ itemQuantity[z+range].toString());
    }
    range = range + orderNumber[x];
    x++;
  }
  

Answer 1

You can't put brace in for loop widget, I've got the same problem for quite some time and one the solution was to map the iterated list.

children: [
    ...restaurantNames.map((i){
      print(i);
      for(int z = 0; z != loadedOrder.orderNumber[x];z++){
        return Text(loadedOrder.itemNames[z + range] + 'X' +loadedOrder.itemQuantity[z + range].toString());
      }
      range = range + orderNumber[x];
      x++;
    }).toList(),
  ],