notifydatasetchanged

I have an adapter which fills a ListView with 2 TextViews with data from a TreeMap. When the user adds or deletes Data from the ListView, the View should be refreshed. So here is my Adapter: public class MyAdapter extends BaseAdapter { private final ArrayList mData; public MyAdapter(Map<String, String> map) { mData = new ArrayList(); mData.addAll(map.entrySet()); } @Override public int getCount() { return mData.size(); } @Override public Map.Entry<String, String> getItem(int position) { return (Map.Entry) mData.get(position); } @Override public long getItemId(int position) { // TODO implement

I have an AlertDialog with a ListView set to multiple selection on it. It also has a Button on it. The Button open another AlertDialog that if ok'ed will remove the selected items from the data set of the ListView , and then tell the adapter of the list view that the dataset has changed with the notifyDataSetChanged() method. This all works fine except for one thing. The ListView does not update it's content until I interact with something. Then it updates to the correct data. This is not a big problem, but I really would like the ListView to appear correct at once, and not just after the

I'm implementing an endless data loading for a RecyclerView. When software detects that last item is going to be shown, it downloads new items and call to the loadMoreData() function but new dataset is not showing. When I called notifyDataSetChanged() so nothing to be happened. I have only one solution that is refresh the view is to set again the adapter but problem is that the recyclerview returns to the first position then again recyclerview scrolled up from the first position to last position. RecyclerViewActivity.java RecyclerView rv; DatabaseHelpr databaseHelpr; RVAdapter adapter;

I am using Glide 3.7.0 with RecyclerView . The item view always blinks when refreshing (calling notifyDataSetChanged ). Here is my code: Glide .with(context) .load(filepath) .diskCacheStrategy(DiskCacheStrategy.NONE) .skipMemoryCache(true) .dontAnimate() .into(imageview); When I use no cache, the ImageView has a null Bitmap when notifyDataSetChanged method is called and Glide hasn't finished loading the bitmap. If I use the code below: Glide .with(context) .load(filepath) .dontAnimate() .into(imageview); Then the item ImageView does not blink anymore (using cache). I want to update the item

I extended RecyclerView.Adapter<RecyclerView.ViewHolder> And when I called: mRecyclerView.getAdapter().notifyDataSetChanged(); Nothing happened. The only way to refresh the view is to set again the adapter ( see this answer ): mRecyclerView.setAdapter(new MyAdapter(...)); I have two issues with this solution: I can see a blink on the screen when I set again the adapter The listview returns to the first position. Any ideas? Varvara Kalinina If notifyDataSetChanged() does not trigger view updates than there is a chance that you have forgotten to call SetLayoutManager() on your RecyclerView (like

I am creating a list of cards to display using the RecyclerView, where each card has a button to remove that card from the list. When i use notifyItemRemoved() to remove the card in the RecyclerView, it removes the item and animates fine but the data in the list is not updated correctly. If instead of that, i switch to the notifyDataSetChanged() then the items in list are removed and updated correctly, but then the cards dont animate. Does someone has any experience in using the notifyItemRemoved() and know why it behaves differently than notifyDataSetChanged? Here is some peiece of code that