SectionIndexor in Android 3.0 Onwards

Question

I have an application in which i have implemented sectionIndexor to have alphabetical scrolling. This works fine with API level < 11. In higher versions i have a problem. The problem is that when i using fast scrolling thumb then i get to see the items properly. I have made that thumb(blue bar) always visible. But when i scroll slowly without using that thumb, that blue thumb icon disappears. When i touch the fast scroll Index thumb, i get the perfect results as shown below. https://i.stack.imgur.com/LBT4n.png

But when i scroll without using fastscrolling thumb(blue bar), The bluebar disappears and i can see only that line as shown below. https://i.stack.imgur.com/Vgt8Z.png Please guide me as to what i can do to solve this.

Thanks

Answer 1

Although this question might be outdated for the OP, an answer may be interesting for others.

The problem looks like a missing/wrong implementation of the getSectionForPosition method of the sectionIndexer interface. I went a bit more into detail here and also provided a sample implementation.