CODEWITHSUNDEEP
androidgridview
gulyan
gulyan

Reputation: 662

Android 2.1 gridview not displayed

I'm trying to display some images in a grid view. My code works for android 2.2 and 2.3, but not in 2.1

In android 2.1 the grid is always empty/invisible.

The code I use for the grid view is this one:

gridview = (GridView)findViewById(R.id.level_select);
gridview.setAdapter(new LevelImagesAdapter(this, levelsCount,
            maxLevel, listener));
gridview.invalidate();

The LevelImagesAdapter is:

public class LevelImagesAdapter extends BaseAdapter {

    private View.OnClickListener listener;
    private Context mContext;
    private int count;
    private int maxLevel;

    public LevelImagesAdapter(Context c, int maxLevel, int count, View.OnClickListener listener) {
        this.mContext = c;
        this.listener = listener;
        this.count = count;
        this.maxLevel = maxLevel;
    }

    @Override
    public int getCount() {
        return count;
    }

    @Override
    public Object getItem(int position) {
        return null;
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        Button view;
        if (convertView == null) {
            view = new Button(mContext);
            view.setOnClickListener(listener);
            view.setLayoutParams(new GridView.LayoutParams(GridView.LayoutParams.WRAP_CONTENT, GridView.LayoutParams.WRAP_CONTENT));
            view.setPadding(5, 5, 5,5);
        }
        else {
            view = (Button) convertView;
        }

        if (position <= maxLevel) {
            view.setBackgroundResource(R.drawable.level_unlock);
            view.setText((position + 1) + "");
            view.setTextColor(Color.WHITE);
            view.setTextSize(16.0f);
        }
        else {
            view.setBackgroundResource(R.drawable.level_lock);
            view.setText("");
        }
        return view;
    }

}

As far as I can tell, the adapter is created, but the getView method is never called.

Thanks!

Upvotes: 2

Views: 2077

Answers (1)

chubbsondubs
chubbsondubs

Reputation: 38676

Your getItem(position) must return something other than NULL

Make sure getCount() is returning a non-zero number.

Check and make sure you have your GridView layout parameters set to fill_parent in your layout and not match_parent Lower API levels don't support match_parent so fill_parent is backwardly compatible. The GridView could be hidden and it won't call getView in that case.

Upvotes: 6

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