notifydatasetchanged
FragmentPagerAdapter notifyDataSetChanged not working
What Nik Myers is saying is correct. However there is a piece missing. When notifyDataSetChanged is called, the method getItemPosition is called. You need to override this to get the fragments to reload. @Override public int getItemPosition(Object object) { // Causes adapter to reload all Fragments when // notifyDataSetChanged is called return POSITION_NONE; }
using notifyItemRemoved or notifyDataSetChanged with RecyclerView in Android
Use notifyItemRangeChanged(position, getItemCount()); after notifyItemRemoved(position); You don’t need to use index, just use position. See code below. private List<DetectedIssue> issues = new ArrayList<DetectedIssue>(); @Override public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) { // – get element from your dataset at this position // – replace the contents of the view with that element if(position >0){ RiskViewHolder … Read more
Android ListView not refreshing after notifyDataSetChanged
Look at your onResume method in ItemFragment: @Override public void onResume() { super.onResume(); items.clear(); items = dbHelper.getItems(); // reload the items from database adapter.notifyDataSetChanged(); } what you just have updated before calling notifyDataSetChanged() is not the adapter’s field private List<Item> items; but the identically declared field of the fragment. The adapter still stores a reference … Read more
notifyDataSetChange not working from custom adapter
Change your method from public void updateReceiptsList(List<Receipt> newlist) { receiptlist = newlist; this.notifyDataSetChanged(); } To public void updateReceiptsList(List<Receipt> newlist) { receiptlist.clear(); receiptlist.addAll(newlist); this.notifyDataSetChanged(); } So you keep the same object as your DataSet in your Adapter.
notifyDataSetChanged example
For an ArrayAdapter, notifyDataSetChanged only works if you use the add(), insert(), remove(), and clear() on the Adapter. When an ArrayAdapter is constructed, it holds the reference for the List that was passed in. If you were to pass in a List that was a member of an Activity, and change that Activity member later, … Read more