Double click item in ListView Android

Question

When i click on the first item of ListView, the first item is selected. But when i scroll down, the 12th item is selected too, but i didn;t click on the 12th item. Why it was happend?

First screen: http://oi59.tinypic.com/9iw7b8.jpg Second screen : oi60.tinypic.com/1zxunv4. jpg [delete whitespace]

My sourse code is like that : http://startandroid.ru/en/uroki/vse-uroki-spiskom/85-urok-44-sobytija-v-listview.html

But i add the white recolor after utem click.

I think you are facing a similar problem I had a couple of days ago: http://stackoverflow.com/questions/30424912/change-item-background-color-in-simple-listview — Ruocco, May 28 '15 at 23:27

score 1 · Answer 1 · edited May 23 '17 at 11:58

This question was answered here: Checking a checkbox in listview makes other random checkboxes checked too

Basically, when you scroll down you list, it recycles its present state as well as listeners attached to it.

One way I solved this problem is (suposing that your list is called check in java):

Create a boolean array (let's name it listCheck), same size as your checkbox, all values false

Write in your adapter getView method:

check.setChecked(listCheck[position]); //listCheck is your array of booleans.
check.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        CheckBox checkBox = (CheckBox) v.findViewById(R.id.checkEspecialidade);
        listCheck[position] = check.isChecked();
    }
});

Basically, we set the check value the same as the one on the array, and when the user clicks it, we also change de value of that check in the array. That works because the boolean array is not recycled.

There is no need in creating new array - it's obvious to add boolean value to initial object, array of which is displayed using the ListView — Oleg Osipenko, May 28 '15 at 21:52
Agreed @OlegOsipenko, but I think this way it's easier to understand. — Thyen Hong Guedes Chang, May 29 '15 at 18:28

Double click item in ListView Android

1 Answers1