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POclear a custom adapter
 

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  1. POclear a custom adapter
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    <p>ive implented a searchbar into my ListView and so far it works correctly except that the adapter is acting weird. Everytime i call its clear function my listview still shows the "old" content.</p> <pre><code>public abstract class MYLISTITEM extends BaseAdapter { private Context activity; private List&lt;String&gt; data; private static LayoutInflater inflater=null; private int ItemIcon; private boolean moreVis; public MYISTITEM(Context a, int IconID,boolean vis) { activity = a; data = new ArrayList&lt;String&gt;(); inflater = (LayoutInflater)activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE); ItemIcon = IconID; moreVis = vis; } public void add(String object) { data.add(object); notifyDataSetChanged(); } public void replace(int index,String object) { data.set(index, object); notifyDataSetChanged(); } public void clear() { data.clear(); notifyDataSetChanged(); } public void remove(Object object) { data.remove(object); notifyDataSetChanged(); } @Override public int getCount() { // TODO Auto-generated method stub return data.size(); } public void insert(String object,int c) { data.set(c, object); notifyDataSetChanged(); } @Override public String getItem(int position) { // TODO Auto-generated method stub if(position &gt;= 0 &amp;&amp; position &lt; data.size()) { return data.get(position); } return null; } @Override public long getItemId(int position) { // TODO Auto-generated method stub return position; } public static class ViewHolder{ public TextView text; public ImageView image; } @Override public View getView(int position, View convertView, ViewGroup parent) { View vi=convertView; ViewHolder holder; if(convertView==null){ vi = inflater.inflate(R.layout.item,parent, false); holder=new ViewHolder(); holder.text=(TextView)vi.findViewById(R.id.text); holder.image=(ImageView)vi.findViewById(R.id.image); vi.setTag(holder); } else holder=(ViewHolder)vi.getTag(); holder.text.setText(data.get(position)); holder.image.setImageDrawable(activity.getResources().getDrawable(ItemIcon)); ImageButton btn_more = (ImageButton) vi.findViewById(R.id.more); if(moreVis) { btn_more.setOnClickListener(new OnMoreClickListener(btn_more,position)); } else { btn_more.setVisibility(View.GONE); } vi.setOnClickListener(new OnRowClickListener(vi,position)); return vi; } public abstract void OnRowClick(View mView, int position); public abstract void OnMoreClick(View mView, int position); private class OnRowClickListener implements OnClickListener{ private int mPosition; private View mView; OnRowClickListener(View view,int position){ mPosition = position; mView = view; } @Override public void onClick(View arg0) { OnRowClick(mView,mPosition); } } private class OnMoreClickListener implements OnClickListener{ private int mPosition; private View mView; OnMoreClickListener(View view,int position){ mPosition = position; mView = view; } @Override public void onClick(View arg0) { OnMoreClick(mView,mPosition); } } </code></pre> <p>}</p> <p>the debugger shows that only the size of data has been changed but none of its content. Do i miss something here???</p> <hr> <p>some additional code:</p> <pre><code>public abstract class MYSCREEN extends ListView{ public abstract void Init(); public abstract void OnLoadFinished(); public abstract void OnRowClicked(int position); public abstract void onCreateQuickAction(MYQUICKACTION action,int position); public abstract void CreateOptionMenu(Menu menu); public abstract boolean OptionsItemSelected(MenuItem item); public MYLISTITEM adapter = null; public static void StartupScreen(Activity current,Class&lt;?&gt; next) { Intent myIntent = new Intent(current,next); current.startActivity(myIntent); } public MYSCREEN(Activity context,int Icon) { super(context); boolean moreisvis = true; MYQUICKACTION canarybirdybirdy = new MYQUICKACTION(new View(context)); onCreateQuickAction(canarybirdybirdy,0); if(canarybirdybirdy.anchor.getVisibility() != View.VISIBLE) { moreisvis = false; } adapter = new MYLISTITEM(context,Icon,moreisvis){ @Override public void OnRowClick(View mView, int position) { // TODO Auto-generated method stub OnRowClicked(position); } @Override public void OnMoreClick(View mView, int position) { // TODO Auto-generated method stub final MYQUICKACTION mQuickAction = new MYQUICKACTION(mView); final ImageButton mMoreImage = (ImageButton) mView.findViewById(MY.views.R.id.more); mMoreImage.setImageResource(MY.views.R.drawable.ic_list_more_selected); onCreateQuickAction(mQuickAction,position); mQuickAction.setAnimStyle(MYQUICKACTION.ANIM_AUTO); mQuickAction.setOnDismissListener(new OnDismissListener() { @Override public void onDismiss() { mMoreImage.setImageResource(MY.views.R.drawable.ic_list_more); } }); mQuickAction.show(); } }; final ProgressDialog dialog = new ProgressDialog(context); dialog.setMessage("loading..."); dialog.show(); new LOADER(){ @Override public void RunThread() { Init(); } @Override public void FinishLoad() { dialog.dismiss(); OnLoadFinished(); } }.Start(); } public abstract class MYTHREAD extends AsyncTask&lt;Void, Void, Void&gt; { public abstract void InitThread(); public abstract void RunThread(); public abstract void FinishThread(); @Override protected Void doInBackground(Void... params) { RunThread(); // TODO Auto-generated method stub return null; } //ui stuff allowed @Override protected void onPreExecute() { InitThread(); } //ui stuff allowed @Override protected void onProgressUpdate(Void... value) { super.onProgressUpdate(value); } //ui stuff allowed @Override protected void onPostExecute(final Void unused) { FinishThread(); } public void Start() { this.execute(); } } public abstract class LOADER extends MYTHREAD{ public abstract void FinishLoad(); @Override public void InitThread() { // TODO Auto-generated method stub } @Override public void FinishThread() { // TODO Auto-generated method stub FinishLoad(); } }} </code></pre> <p>and here is the function that gives me the headache.Its from one of MYSCREEN derived classes , oh and its also called from the search-buttons clickevent.</p> <pre><code> @Override public void OnLoadFinished() { // TODO Auto-generated method stub SelectedTable = TabController.Instance.Clients[TabController.Instance.selectedtab ? 1 : 0].DbTablename; adapter.clear(); TabController.Instance.Clients[TabController.Instance.selectedtab ? 1 : 0].MetaEntities(SelectedTable, true, new ClientCallBackHandler(){ @Override public void StartCallBack() { // TODO Auto-generated method stub prgdialog.setMessage("connecting service..."); prgdialog.show(); } @Override public void EndCallBack(boolean success) { // TODO Auto-generated method stub if(success) { try{ ExceptionResponse except = (ExceptionResponse) this.response; ab.setMessage(Html.fromHtml("&lt;b&gt;&lt;font color=#ff0000&gt;" + except.Message)); ab.setPositiveButton("ok", null); ab.show(); success = false; }catch(Exception e) { MetadataEntitiesResponse resp = (MetadataEntitiesResponse) response; if(resp.Entities[0] != null) { Ent = resp.Entities[0]; int i = 0; //search for the first string in our database ... for(AttributeMetaData Att : Ent.Attributes) { if(Att.Type.contentEquals("string")) { SelectedAttribute = i; break; } i++; } StartQuery(0); //here the adapter gets filled with info } } } } }); } </code></pre> <hr> <pre><code> private void StartQuery(int page) { if(currentpage != -1) { nextpage = page; return; } Query query = new Query(); query.EntityName = Ent.Name; if(SearchFilter != null) { query.Filter = new Filter(); query.Filter.Filters = SearchFilter; query.Filter.FilterOperator = Filter.E_FilterOperator.And; } query.Columns = new AllColumns(); query.Limit = new Limit(); query.Limit.Count = 15; Order order = new Order(); order.OrderType = Order.OrderTypeE.Ascending; order.AttributeName = Ent.Attributes[SelectedAttribute].Name; query.Orders = new Order[] {order}; currentpage = query.Limit.Page = page; TabController.Instance.Clients[TabController.Instance.selectedtab ? 1 : 0].RetrieveMultiple(query, new ClientCallBackHandler(){ @Override public void StartCallBack() { // TODO Auto-generated method stub } @Override public void EndCallBack(boolean success) { // TODO Auto-generated method stub try{ ExceptionResponse except = (ExceptionResponse) this.response; ab.setMessage(Html.fromHtml("&lt;b&gt;&lt;font color=#ff0000&gt;" + except.Message)); ab.setPositiveButton("ok", null); ab.show(); success = false; }catch(Exception e) { RetrieveMultipleResponse rmResp = (RetrieveMultipleResponse) this.response; if(adapter.getCount() == 0) { for(int i = 0; i&lt; rmResp.TotalRecords;i++) { prgdialog.setMessage( ((int) (i/rmResp.TotalRecords * 100)) + "%"); adapter.add("connecting..."); } prgdialog.dismiss(); } int i = 0; for(Entity ent : rmResp.Entities) { adapter.replace(currentpage*15+i, ent.Properties[SelectedAttribute].ToString()); i++; } if(currentpage == nextpage) { nextpage = -1; } else { StartQuery(nextpage); } currentpage = -1; } } }); } </code></pre>
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