How to: gridview inside a fragment?

Question

I want to create a gridview like android market, I want to populate this with images from a database on internet. it need to work with androidv4.support, since I want to run 2.2 until 4.0. Someone said, that isnt possible to create a gridview in pre-4.0, is it true? However It only works when I put use `setListAdapter()`, but it shows only one image per line, like a listview, when I change to `gridview.setAdapter()`, it doenst work anymore. Here is my try: This is the ListFragment class: ``` public static class ArrayListFragment extends ListFragment implements OnScrollListener{ ImageAdapter adapter = new ImageAdapter(); @Override public void onActivityCreated(Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); LayoutInflater gridInflater = (LayoutInflater) getActivity().getSystemService(Context.LAYOUT_INFLATER_SERVICE); View v = gridInflater.inflate(R.layout.imagelist, null); GridView gridView = (GridView) v.findViewById(R.id.list); ImageDownloader.Mode mode = Im…

Accepted Answer

This should work fine, you just can't use a gridView in a `ListFragment` - just use a plain old `Fragment` instead, if you're going to be manually managing the grid anyway

Also, the point of checking if convertView is null is to do view recycling - the OS only declares enough views to fill the screen and no more, so if you scroll then it can reuse the view instead of having to inflate a new one. Change up your getView() like so to take advantage:

```
public View getView(int position, View convertView, ViewGroup parent) {
  View v;

if (convertView == null) {
    v = LayoutInflater.from(mContext).inflate(R.layout.image_text_view,null);
    v.setLayoutParams(new GridView.LayoutParams(200,200));
  }
  else {
    v = convertView;
  }

ImageView imageview = (ImageView)v.findViewById(R.id.image);
  imageview.setScaleType(ImageView.ScaleType.CENTER_CROP);
  imageview.setPadding(6, 6, 6, 6);
  imageDownloader.download(URLS[position], imageview);

return v;
}
```

Also, getView isn't a function of BaseAdapter, try switching to ArrayAdapter instead. As a side note, always use `@Override` when you think you're overriding a base function - that way the compiler will give you an error if you make a mistake

How to: gridview inside a fragment?

Solution

Problem