Implementing null safety on if statement?

Question

I am updating my app to comply the null safety right now. Still new and trying to figure things out. However, I am stuck on the if & else if statement.

return Container(
  child: 
      if (_dashboardViewController.currentPage() == 'home') {
        return HomeView();
      } else if (_dashboardViewController.currentPage() == 'profile') {
        return ProfileView();
      } else if (_dashboardViewController.currentPage() == 'game') {
        return GameView();
      }

They are all Container widgets. But, I am receiving

The body might complete normally, causing 'null' to be returned, but the return type is a potentially non-nullable type. Try adding either a return or a throw statement at the end.

It worked before the null safety. I am quite lost where I can make this null safety. And, also, where can I put ? to allow to have null value in this case?

Adelina · Accepted Answer · 2021-04-17 14:59:26Z

1

   if (_dashboardViewController.currentPage() == 'home') {
        return HomeView();
      } else if (_dashboardViewController.currentPage() == 'profile') {
        return ProfileView();
      } else if (_dashboardViewController.currentPage() == 'game') {
        return GameView();
      }
   else return Container() // it has to return something, can't return null/nothing

answered Apr 17, 2021 at 14:59

Adelina

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