notifydatasetchanged - w3toppers.com

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

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.

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

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

How to dynamically add suggestions to autocompletetextview with preserving character status

one of the easiest way of doing that (put the code in onCreate): EDIT: addied wikipedia free opensearch (if https://en.wikipedia.org doesn’t work try http://en.wikipedia.org) AutoCompleteTextView actv = new AutoCompleteTextView(this); actv.setThreshold(1); String[] from = { “name”, “description” }; int[] to = { android.R.id.text1, android.R.id.text2 }; SimpleCursorAdapter a = new SimpleCursorAdapter(this, android.R.layout.simple_list_item_2, null, from, to, 0); a.setStringConversionColumn(1); … Read more