Parameter specified as non-null is null: method kotlin.jvm.internal.Intrinsics.checkParameterIsNotNull, parameter convertView

Question

I got this error just after converted the adapter code to Kotlin:

java.lang.IllegalArgumentException: Parameter specified as non-null is null: method kotlin.         


        

Answer 1

All correct solutions are already posted above. Just one more with some code and ViewBinding:

class SpinnerAdapter(
      context: Context,
      private val items: List
) : BaseAdapter() {

private var layoutInflater: LayoutInflater = LayoutInflater.from(context)

override fun getView(i: Int, convertView: View?, viewGroup: ViewGroup): View {
    return if (convertView != null) {
        convertView
    } else {
        val view = layoutInflater.inflate(R.layout.item_spinner, null)
        val binding = ItemSpinnerBinding.bind(view)
        val item = items[i]
        binding.name.text = item.name
        view
    }
}

//more overridde methods
}

Where my R.layout.item_spinner has a TextView with an Id called "name".