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POHow to delete item with icon from adapter
 

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  1. POHow to delete item with icon from adapter
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    <p>I am trying to delete from adapter an icon with item(text) from adapter. I know it looks like a simple task and I did it but still have some bug on it. Its looks like the item that I delete them get strange that first icon in the list and the last one get the same icon. Here's the code:</p> <pre><code>ListRssLinkAndTitle=(ArrayList)dbAdpter.getWantedItemsList(this,"RssTitle","link","Rtl","image");//get wanted items from db for (int j=0;j&lt;ListRssLinkAndTitle.size();j++) listKeys.add(ListRssLinkAndTitle.get(j).title); for (int i=0;i&lt;ListRssLinkAndTitle.size();i++) Icon.add(ListRssLinkAndTitle.get(i).icon); listAdapter = new ListRssAdpter(this, R.layout.titlesrss, listKeys,Icon); lv.setAdapter(listAdapter); lv.setOnItemClickListener(new OnItemClickListener() { public void onItemClick(AdapterView&lt;?&gt; parent, View view, int position, long id) { if (0&lt;dbAdpter.deleteRssItem(ListRssLinkAndTitle.get(position).title,ListRssLinkAndTitle.get(position).url)) { ListRssLinkAndTitle.remove(position); listAdapter.items.remove(position); listAdapter.FavIconList.remove(position); listAdapter.notifyDataSetChanged(); } else Toast.makeText(getApplicationContext(), getResources().getString(R.string.operationFaild),0).show(); } } }); </code></pre> <p>and the adapter:</p> <pre><code>public class ListRssAdpter extends ArrayAdapter { private Context mContext; private int id; public List&lt;String&gt; items; public List&lt;byte[]&gt; FavIconList; public boolean iconRemove=false; public int IconHigh=-1;// if -1 not in use //constractor for fav icon public ListRssAdpter(Context context, int textViewResourceId, List&lt;String&gt; list,List&lt;byte[]&gt; icon) { super(context, textViewResourceId, list); mContext = context; id = textViewResourceId; items = list; this.FavIconList=icon; } public View getView(int position, View v, ViewGroup parent) { View mView = v; if (mView==null) { LayoutInflater vi = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE); mView = vi.inflate(id, null); } ImageView removeIcon = (ImageView)mView.findViewById(R.id.iconremove); ImageView favIcon = (ImageView)mView.findViewById(R.id.iconfav); if (iconRemove) { removeIcon.setVisibility(View.VISIBLE); favIcon.setVisibility(favIcon.GONE); } else { if (FavIconList.get(position)!=null) { Bitmap bitmap = BitmapFactory.decodeByteArray(FavIconList.get(position), 0, FavIconList.get(position).length); favIcon.setImageBitmap(bitmap); } else BitmapFactory.decodeResource(mView.getContext().getResources(),R.drawable.rss); removeIcon.setVisibility(removeIcon.GONE); favIcon.setVisibility(favIcon.VISIBLE); } TextView tx = (TextView) mView.findViewById(R.id.textView); //if this view is on main screen if (tx == null) { tx = ((TextView) mView); } if (this.IconHigh!=-1) tx.setHeight(this.IconHigh); //this.setTextSize(TypedValue.COMPLEX_UNIT_PX, size); tx.setText(items.get(position)); return mView; } } </code></pre> <p>If you can't find a logic error maybe you can give me a simple example working code :)</p>
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    1. PTQuestion
    1. USVitaly Menchikovsky
    1. USVitaly Menchikovsky
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    1. This table or related slice is empty.
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    1. COIts not necessairy to remove the items from the adapter, you can remove directly from listKeys and call notifydatasetchanged. You can use the viewHolder pattern to reuse view objects in your view method. I don't know the exact solution but search for some examples regarding adapters. there is enough sample code on the web regarding this topic
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      1. POHow to delete item with icon from adapter
      1. USTobrun
    2. COAlso, it's not good practice to be able to access the internal fields of the Adapter like you did there, don't make them public.
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      1. POHow to delete item with icon from adapter
      1. USdmon
    3. CODo you simply want to add (or remove) a "favorite" icon when the user clicks a row?
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      1. POHow to delete item with icon from adapter
      1. USSam
 

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