How can I put a ListView into a ScrollView without it collapsing?

Question

I\'ve searched around for solutions to this problem, and the only answer I can find seems to be \"don\'t put a ListView into a ScrollView\". I have yet to see any real expl

Answer 1

All these answers are wrong!!! If you are trying to put a listview in a scroll view you should re-think your design. You are trying to put a ScrollView in a ScrollView. Interfering with the list will hurt list performance. It was designed to be like this by Android.

If you really want the list to be in the same scroll as the other elements, all you have to do is add the other items into the top of the list using a simple switch statement in your adapter:

class MyAdapter extends ArrayAdapter{

    public MyAdapter(Context context, int resource, List objects) {
        super(context, resource, objects);
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
         ViewItem viewType = getItem(position);

        switch(viewType.type){
            case TEXTVIEW:
                convertView = layouteInflater.inflate(R.layout.textView1, parent, false);

                break;
            case LISTITEM:
                convertView = layouteInflater.inflate(R.layout.listItem, parent, false);

                break;            }


        return convertView;
    }


}

The list adapter can handle everything since it only renders what is visible.

Answer 2

This is a combination of the answers by DougW, Good Guy Greg, and Paul. I found it was all needed when trying to use this with a custom listview adapter and non-standard list items otherwise the listview crashed the application (also crashed with the answer by Nex):

public void setListViewHeightBasedOnChildren(ListView listView) {
        ListAdapter listAdapter = listView.getAdapter();
        if (listAdapter == null) {
            return;
        }

        int totalHeight = listView.getPaddingTop() + listView.getPaddingBottom();
        for (int i = 0; i < listAdapter.getCount(); i++) {
            View listItem = listAdapter.getView(i, null, listView);
            if (listItem instanceof ViewGroup)
                listItem.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
            listItem.measure(0, 0);
            totalHeight += listItem.getMeasuredHeight();
        }

        ViewGroup.LayoutParams params = listView.getLayoutParams();
        params.height = totalHeight + (listView.getDividerHeight() * (listAdapter.getCount() - 1));
        listView.setLayoutParams(params);
    }

Answer 3

When we place ListView inside ScrollView two problems arise. One is ScrollView measures its children in UNSPECIFIED mode, so ListView sets its own height to accommodate only one item(I don't know why), another is ScrollView intercepts the touch event so ListView does not scrolls.

But we can place ListView inside ScrollView with some workaround. This post, by me, explains the workaround. By this workaround we can also retain ListView's recycling feature as well.