Listview with dynamic height(without scroll)

Question

Considering the following structure:

Listview (1) > Adapter (1) > Listview (2) > Adapter (2)

I need to place a listview inside an Adapter, and in that list view there may be several other Adapters.

Adapter(1) inside Listview(1) needs to contain a Listview(2) and within that precise list of Adapters(2) with heights according to its contents.

I’ve tried everything I’ve seen in tutorials and nothing helped, always the same thing happens. Adapter(1) is fixed in size, and Listview(2) creates scrolling, it is not full in height to readjust the Adapter(1).

I leave below an image with example and caption, and thank you if someone can tell me how I can be making this list. Thank you.

Answer 1

You need to calculate the height of your listview according to the number of items, that’s it?

I use this code:

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

    int totalHeight = listView.getPaddingTop() + listView.getPaddingBottom();
    int desiredWidth = MeasureSpec.makeMeasureSpec(listView.getWidth(), MeasureSpec.AT_MOST);
    for (int i = 0; i < listAdapter.getCount(); i++) {
        View listItem = listAdapter.getView(i, null, listView);

        if(listItem != null){
            // This next line is needed before you call measure or else you won't get measured height at all. The listitem needs to be drawn first to know the height.
            listItem.setLayoutParams(new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT));
            listItem.measure(desiredWidth, MeasureSpec.UNSPECIFIED);
            totalHeight += listItem.getMeasuredHeight();

        }
    }

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

Then you just call him, so:

setListViewHeightBasedOnChildren(instancia_da_sua_list_view);