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Showing posts from March, 2013

ArrayAdapter notifyOnDataSetChanged doesn't refresh underlying ListView

If for any reason you're using ArrayAdapter to feed your ListView on Android you may be struggling with the fact that whatever you do - executing notifyOnDataSetChanged doesn't result in the corresponding ListView getting refreshed. There is one simple solution for this (and no, I am not talking about one that I saw on one forum where it was suggested to recreate the ArrayAdapter , which on a first glance may be a good idea at least until you're happy with the list jumping every time to the top). So what you need to do to have your ListView updated is: 1. Either execute  arrayAdapter.remove(itemToRemove); // if you want to delete item from the list or arrayAdapter.add(itemToAdd); // if you want to add an item to the list or 2. Execute arrayAdapter.clear(); // get rid of all elements arrayAdapter.addAdd(listOfItems); // add them back to the list Both work just fine.