Frederick Eskens Frederick Eskens - 1 year ago 85
Android Question

Last section of SectionIndexer scrolls really fast

Here's a short video of my problem. The last section of the list is scrolling really fast, as you can see by the scrollbar. Here's my code (the relevant parts):

public TotemAdapter (Activity activity, List<Totem> list) {
_activity = activity;
totemList = list;
showDelete = false;

var items = list.ToArray ();

alphaIndex = new Dictionary<string, int>();
for (int i = 0; i < items.Length; i++) {
var key = items[i].title[0].ToString();
if (!alphaIndex.ContainsKey(key))
alphaIndex.Add(key, i);
sections = new string[alphaIndex.Keys.Count];
alphaIndex.Keys.CopyTo(sections, 0);
sectionsObjects = new Java.Lang.Object[sections.Length];
for (int i = 0; i < sections.Length; i++) {
sectionsObjects[i] = new Java.Lang.String(sections[i]);

public int GetPositionForSection (int section) {
return alphaIndex[sections[section]];

public int GetSectionForPosition(int position) {
return 1;

public Java.Lang.Object[] GetSections () {
return sectionsObjects;

Does anyone know how I can fix this?

Thanks in advance.

Answer Source

I fixed it by returning 0 instead of 1 in GetSectionForPosition.

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