ListView: how to access Item's elements programmatically from outside?

Question

I have the following situation.

I have a ListView, each item of the ListView is comprised of different widgets (TextViews, ImageViews, etc...) inflated form a Layout in

Answer 1

I assume you have a model object that you use to "draw" the list item , and for example the background color is determined based on a boolean or something.

All you need to do, is change the value on which you base your decision which background color should that TextView have.

Your getView() method should have code like that

if (myModelObj.isBrown()) {
    myTextView.setBackgroundResource(R.drawable.brown_bg);
else
    myTextView.setBackgroundResource(R.drawable.not_brown_bg);

All you should do when ur event is triggered, is set the value of the brown boolean in your model and call notifyDataSetChanged() on your adapter

EDIT

If for some reason you don't wanna call nofitfyDataSetChanged(), althought it won't move the scroll position of your list and with the right recyclying it won't cause bad performance

You can find the View object that represent the list item you want to edit-if it's visisble-, and simply change the background in it, without refreshing the list at all.

int wantedPosition = 10; // Whatever position you're looking for
int firstPosition = listView.getFirstVisiblePosition() - listView.getHeaderViewsCount();
int wantedChild = wantedPosition - firstPosition
if (wantedChild < 0 || wantedChild >= listView.getChildCount()) {
    // Wanted item isn't displayed
    return;
}
View wantedView = listView.getChildAt(wantedChild);

then use wantedView to edit your background

This answer can be found here