Is there a way to prevent the listview from scrolling to its top position when its adapter's data is changed?

Question

I\'m having a bit of trouble preserving the scroll position of a list view when changing it\'s adapter\'s data.

What I\'m currently doing is to create a custom Array

Answer 1

In your Expandable/List Adapter, put this method

public void refresh(List dataList) {
    mDataList.clear();
    mDataList.addAll(events);
    notifyDataSetChanged();
}

And from your activity, where you want to update the list, put this code

if (mDataListView.getAdapter() == null) {
    MyDataAdapter myDataAdapter = new MyDataAdapter(mContext, dataList);
    mDataListView.setAdapter(myDataAdapter);
} else {
    ((MyDataAdapter)mDataListView.getAdapter()).refresh(dataList);
}

In case of Expandable List View, you will use mDataListView.getExpandableListAdapter() instead of mDataListView.getAdapter()