Is it possible to add a variable in the getview adapter function by overriding it?

Question

How to refer to adapter in the getview (of a listview) with this google syntax :

fun getView(position: Int, convertView: View?, parent: ViewGroup): View {
    return (convertView ?: layoutInflater.inflate(R.layout.my_layout, parent, false)).apply {
        // … bind content from position to convertView …
        //personal comment : "this" does not refer to adapter
    }
}

Indeed, after the .apply, I have to call adapter in order to make an adapter.notifyDataSetChanged().

With a "classic syntax", adapter could be called thanks to "this", that is impossible with google syntax.

"Classic syntax"

fun getView(position: Int, convertView: View?, parent: ViewGroup): View {

....

//"this" (refers to adapter)

return convertView
}

So is it possible to overriding the getview function to add variable in the signature ? Else, what is the solution of my problem ?

score 0 · Answer 1 · answered Dec 30 '20 at 11:19

0

You should use .also { ... } instead of .apply { ... }

answered Dec 30 '20 at 11:19

Antoine

307
2
13

Thx for the tips :) – jujuf1 Dec 31 '20 at 07:38
You're welcome! Don't forget to mark it as the correct answer if that's what you were looking for. – Antoine Jan 04 '21 at 12:26

score 0 · Answer 2 · answered Dec 30 '20 at 21:54

0

If I got your question right, you can:

Write your getView(...) function same as adapters, with additional parameter

call your getView() in adapter overridden getView(...) pass your argument what you want.

answered Dec 30 '20 at 21:54

Narek Hayrapetyan

1,731
15
27

Thx you but when I add some parameter it is written that « the function overrides nothing. » – jujuf1 Dec 31 '20 at 07:37

Is it possible to add a variable in the getview adapter function by overriding it?

2 Answers2