section indexer get section for position returns 0

Question

In my project I have class that extends ArrayAdapter and implements SectionIndexer. When implementing methods getPositionForSec

Answer 1

Your callback method getPositionForSection(int section) needs to be implemented to give the right position which is used by setSelection to return the right position where you want to scroll on touch of SectionIndexer on rightside.

Make sure you are doing this

this.setSelection(((SectionIndexer) getAdapter()) .getPositionForSection(currentPosition));

You need to implement two callback methods

@Override
public Object[] getSections() { 
  Log.d("ListView", "Get sections"); 
  String[] sectionsArr = new String[sections.length()]; 
  for (int i=0; i < sections.length(); i++) 
  sectionsArr[i] = "" + sections.charAt(i);

   return sectionsArr; 
 }

This final callback and you are done here

@Override 
public int getPositionForSection(int section){ 
  Log.d("ListView", "Get position for section"); 
  for (int i=0; i < this.getCount(); i++) { 
  String item = this.getItem(i).toLowerCase(); 
  if (item.charAt(0) == sections.charAt(section)) 

 return i; 
} 

return 0; 
}