Question 75784 in Flutter Question posted in
The official Flutter documentation can be found here.

This function has a return type of 'int', but doesn't end with a return statement flutter

in my function there is a warning about the return (This function has a return type of ‘int’, but doesn’t end with a return statement. ) but I dont know what is the problem . any idea?

int checkValueIndex() {
   if (selectedValue != null) {
      for (int i = 0; i < mList.length; i++) {
        if (mList[i].name == selectedValue.name) {
          return i;
            }
          }
        } else {
          return null;
      }
     }
Tags:

2

Answers


  1. 0

    Error says you have to return some int value. Add ? in return type so that you can allow return null value as well.

    try this code:

    int? checkValueIndex() {
  if (selectedValue != null) {
    for (int i = 0; i < mList.length; i++) {
      if (mList[i].name == selectedValue.name) {
        return i;
      }
    }
  } else {
    return null;
  }
}
    Login or Signup to reply.
  2. 0

    Your function return null value ,add (?) so it will accept null as follow:

     int? checkValueIndex() {
   if (selectedValue != null) {
      for (int i = 0; i < mList.length; i++) {
        if (mList[i].name == selectedValue.name) {
          return i;
            }
          }
        } else {
          return null;
      }
     }
    Login or Signup to reply.
Please signup or login to give your own answer.

Back To Top
Search