how to pass integer to array, where the array is contain some stateful widget

I hava an array called screenData, that is contain screen for my bottomNavigationBar.

for this case, i need to pass an int to all class on screenData.

is there any solution, so i dont need to manually input int to these class?

final screenData = [
    const homeTest(indexTheme: 2),
    const productPage(indexTheme: 2),
    const trading(indexTheme: 2),
    const inventoryPage(indexTheme: 2),
    const masterPage(indexTheme: 2),
    const financePage(indexTheme: 2),
  ];

the code is work fine but in the future i want the indexTheme can change, without i do it manually