Android arrange expandable listview content

Question

I got this tutorial on youtube about expandablelistviews, and here is the source code that he gave, http://easyway2in.blogspot.in/2014/10/android-expandable-listview.html , problem is the contents are not arranged when the activity starts. How do i arrange the content of the listview, with the code on the link?

Even when he adds the parent view in sequence on code. it gets jumbled up on start., Action Movies 1st, then Romantic Movies, then Horror Movies, then Comedy Movies. but when the activity starts, its not in there order when puted on code. — , Sep 23 '15 at 14:03
http://stackoverflow.com/questions/5815423/sorting-arraylist-in-alphabetical-order-case-insensitive — Phantômaxx, Sep 23 '15 at 14:12

score 0 · Accepted Answer · answered Sep 23 '15 at 14:12

0

HashMap is unordered.

This class makes no guarantees as to the order of the map; in particular, it does not guarantee that the order will remain constant over time.

Use LinkedHashMap, if you want to preserve insertion order.

answered Sep 23 '15 at 14:12

Rami

7,879
12
36
66

I see, that explains it. xD – Sep 23 '15 at 14:18
In the code, i'll just change the hashmap to linkedhashmap? – Sep 23 '15 at 14:20
1

Nailed it! :) thanks alot. just changed all to linkedhashmap. it completely fixed everything. – Sep 23 '15 at 14:23

Android arrange expandable listview content

1 Answers1