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POnotifyDataSetChange not working from custom adapter
 

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  1. POnotifyDataSetChange not working from custom adapter
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    <p>When I repopulate my <code>ListView</code>, I call a specific method from my <code>Adapter</code>.</p> <p><strong>Problem</strong>:</p> <p>When I call <code>updateReceiptsList</code> from my <code>Adapter</code>, the data is refreshed, but my <code>ListView</code> doesn't reflect the change. </p> <p><strong>Question</strong>:</p> <p>Why doesn't my <code>ListView</code> show the new data when I call <code>notifyDataSetChanged</code>?</p> <p><strong>Adapter</strong>:</p> <pre><code>public class ReceiptListAdapter extends BaseAdapter { public List&lt;Receipt&gt; receiptlist; private Context context; private LayoutInflater inflater; private DateHelpers dateH; public ReceiptListAdapter(Activity activity, Context mcontext, List&lt;Receipt&gt; rl) { context = mcontext; receiptlist = rl; Collections.reverse(receiptlist); inflater = (LayoutInflater)activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE); dateH = new DateHelpers(); } @Override public int getCount() { try { int size = receiptlist.size(); return size; } catch(NullPointerException ex) { return 0; } } public void updateReceiptsList(List&lt;Receipt&gt; newlist) { receiptlist = newlist; this.notifyDataSetChanged(); } @Override public Receipt getItem(int i) { return receiptlist.get(i); } @Override public long getItemId(int i) { return receiptlist.get(i).getReceiptId() ; } private String getPuntenString(Receipt r) { if(r.getPoints().equals("1")) { return "1 punt"; } return r.getPoints()+" punten"; } @Override public View getView(int position, View convertView, ViewGroup parent) { View vi=convertView; final Receipt receipt = receiptlist.get(position); ReceiptViewHolder receiptviewholder; Typeface tf_hn = Typeface.createFromAsset(context.getAssets(), "helveticaneue.ttf"); Typeface tf_hn_bold = Typeface.createFromAsset(context.getAssets(), "helveticaneuebd.ttf"); if (vi == null) { //convertview==null receiptviewholder = new ReceiptViewHolder(); vi = inflater.inflate(R.layout.view_listitem_receipt, null); vi.setOnClickListener(null); vi.setOnLongClickListener(null); vi.setLongClickable(false); receiptviewholder.shop = (TextView) vi.findViewById(R.id.tv_listitemreceipt_shop); receiptviewholder.date = (TextView) vi.findViewById(R.id.tv_listitemreceipt_date); receiptviewholder.price = (TextView) vi.findViewById(R.id.tv_listitemreceipt_price); receiptviewholder.points = (TextView) vi.findViewById(R.id.tv_listitemreceipt_points); receiptviewholder.shop.setTypeface(tf_hn_bold); receiptviewholder.price.setTypeface(tf_hn_bold); vi.setTag(receiptviewholder); }else{//convertview is not null receiptviewholder = (ReceiptViewHolder)vi.getTag(); } receiptviewholder.shop.setText(receipt.getShop()); receiptviewholder.date.setText(dateH.timestampToDateString(Long.parseLong(receipt.getPurchaseDate()))); receiptviewholder.price.setText("€ "+receipt.getPrice()); receiptviewholder.points.setText(getPuntenString(receipt)); vi.setClickable(false); return vi; } public static class ReceiptViewHolder { public TextView shop; public TextView date; public TextView price; public TextView points; } public Object getFilter() { // XXX Auto-generated method stub return null; } } </code></pre> <p>--EDIT:</p> <p><strong>found Workaround</strong></p> <p>Just to have some functional code i do now:</p> <pre><code>listview.setAdapter( new ReceiptListAdapter(activity,mcontext, -new dataset-); </code></pre> <p>Works, but not how it is supposed to work.</p>
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    1. USJasper
    1. USJasper
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    1. COhttp://stackoverflow.com/a/4198569/2382964 ,Hi Jasper please refer this link ... this will help you .
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      1. USTushar Pandey
 

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