How to use an ArrayAdapter in a Fragment with Kotlin

Question

I am trying to to create a Spinner inside a Fragment but I am getting error in the ArrayAdapter constructor call. I don\'t know why, b

Answer 1

The problem is in this constructor call:

spinner.adapter = ArrayAdapter(
    this,
    R.layout.support_simple_spinner_dropdown_item,
    resources.getStringArray(R.array.atoms)
) as SpinnerAdapter

The argument this must be a reference to a Context, and a Fragment is not a Context. In an Activity it works because an Activity is a Context.

The solution is to replace this with activity:

spinner.adapter = ArrayAdapter(
    activity,
    R.layout.support_simple_spinner_dropdown_item,
    resources.getStringArray(R.array.atoms)
)