Question

I program and handle with ViewHolder but When I type ViewHolder holder; it’s get an error. when I type ViewHolder and use Ctrl + Space it doesn’t show like we type View and User Ctrl + Space. I use ADT 20.0.3

Why eclipse doesn’t show ViewHolder?

Answer 1

Well, maybe because ViewHolder is not included into android library and just used like a pattern for AdapterViews classes, especially?

Update:

Unfortunately you found the code snippet which just illustrates using of ViewHolder without specification of this class. It’s content depends on your list item content. For example, if your ListView has list items with TextView and ImageView elements, so your ViewHolder should looks like this:

static class ViewHolder {
   TextView text;
   ImageView image;
}

It is declared inside your custom adapter class and very efficient for acceleration of ListView scrolling, because during creating of the next list item – when you use not null convertView– you may refer to convertViews content through ViewHolder which is usually is the tag of convertView.