Flutter ternary conditional is null and not subtype of bool-CodePudding

Text(
  data?["success"] != null ? "Success" : "Failure",
  style: TextStyle(
    color: data?["success"] ? Colors.green : Colors.red,
    fontSize: 15.0),
  )
),

_TypeError (type 'Null' is not a subtype of type 'bool')

Sometimes data["success"] has a response of null but it usually is true or false boolean.

I'm using the spacexdata.com api for launches: https://docs.spacexdata.com/#bc65ba60-decf-4289-bb04-4ca9df01b9c1 and it is not data I control.

Hoping someone can help

CodePudding user response：

Since this data?["success"] != null ? is your way of checking success, you need to apply it further down, too:

Text(
  data?["success"] != null ? "Success" : "Failure",
  style: TextStyle(
    color: data?["success"] != null ? Colors.green : Colors.red,
    fontSize: 15.0),
  )
),

Obviously, I have no clue if handling the data that way is "correct", but you should no longer get errors, your success is green and your failure is red.