Styjun

[Auction List Image][1] I am trying to implement a search function to search through the ListView by a specific TextView which is the ItemName TextView as shown in the image such as "Adidas Shoes" & "Nike Shoes" .That TextView is id as txtName. Currently, with these codes, there is no error, but the search function is not doing anything. How do I implement the search to actually search by looking through the txtName TextView?

Adapter:

public class AuctionListAdapter extends BaseAdapter implements Filterable 

ValueFilter valueFilter;


private Context context;
private int layout;
private ArrayList<Model> auctionList;




public AuctionListAdapter(Context context, int layout, ArrayList<Model> auctionList) 
 this.context = context;
 this.layout = layout;
 this.auctionList = auctionList;


@Override
public int getCount() 
 return auctionList.size();


@Override
public Object getItem(int position) 
 return auctionList.get(position);



@Override
public long getItemId(int position) 
 return position;


@Override
public Filter getFilter() 
 if (valueFilter == null) 
 valueFilter = new ValueFilter();
 
 return valueFilter;


private class ValueFilter extends Filter 
 @Override
 protected FilterResults performFiltering(CharSequence constraint) 
 FilterResults results = new FilterResults();

 if (constraint != null && constraint.length() > 0) 
 ArrayList<Model> filterList = new ArrayList<Model>();
 for (int i = 0; i < auctionList.size(); i++) 
 if ((auctionList.get(i).getName().toUpperCase())
 .contains(constraint.toString().toUpperCase())) 
 Model model = new Model(auctionList.get(i).getId(),auctionList.get(i).getName(),
 auctionList.get(i).getDescription(),auctionList.get(i).getPrice(),auctionList.get(i).getDuration()
 ,auctionList.get(i).getImage());
 filterList.add(model);


 
 
 results.count = filterList.size();
 results.values = filterList;
 else 
 results.count = auctionList.size();
 results.values = auctionList;
 
 return results;

 

 @Override
 protected void publishResults(CharSequence constraint,
 FilterResults results) 
 auctionList = (ArrayList<Model>) results.values;
 notifyDataSetChanged();
 




private class ViewHolder
 ImageView imageView;
 TextView txtName,txtDescription,txtPrice,txtDuration;


@Override
public View getView(int position, View convertView, ViewGroup parent) 
 View row = convertView;
 ViewHolder holder = new ViewHolder();

 if(row == null)
 LayoutInflater inflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
 row = inflater.inflate(layout,null);
 holder.txtName=row.findViewById(R.id.txtName);
 holder.txtDescription=row.findViewById(R.id.txtDescription);
 holder.txtPrice=row.findViewById(R.id.txtPrice);
 holder.txtDuration=row.findViewById(R.id.txtDuration);
 holder.imageView=row.findViewById(R.id.imgIcon);
 row.setTag(holder);
 
 else
 holder = (ViewHolder)row.getTag();
 
 Model model = auctionList.get(position);

 holder.txtName.setText(model.getName());
 holder.txtDescription.setText(model.getDescription());
 holder.txtPrice.setText(model.getPrice());
 holder.txtDuration.setText(model.getDuration());


 byte[] auctionImage = model.getImage();
 Bitmap bitmap = BitmapFactory.decodeByteArray(auctionImage,0,auctionImage.length);
 holder.imageView.setImageBitmap(bitmap);
 return row;

AuctionList.java:

@Override
public boolean onCreateOptionsMenu(Menu menu) 
 getMenuInflater().inflate(R.menu.searchmenu,menu);

 MenuItem myActionMenuItem = menu.findItem(R.id.action_search);
 SearchView searchView = (SearchView)myActionMenuItem.getActionView();

 searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() 
 @Override
 public boolean onQueryTextSubmit(String text) 

 return false;
 

 @Override
 public boolean onQueryTextChange(String newText) 
 mAdapter.getFilter().filter(newText);
 return false;
 
 );


 return super.onCreateOptionsMenu(menu);

Create a private class inside your adapter

 /**
 * Custom filter for Brand list
 * Filter content in brand list according to the search text
 */
private class BrandFilter extends Filter 

 @Override
 protected FilterResults performFiltering(CharSequence constraint) 
 FilterResults filterResults = new FilterResults();
 if (constraint!=null && constraint.length()>0) 
 ArrayList<User> tempList = new ArrayList<User>();

 // search content in Brand list
 for (User user : brandList) 
 if (mList.getBrandName().toLowerCase().contains(constraint.toString().toLowerCase())) 
 tempList.add(user);
 
 

 filterResults.count = tempList.size();
 filterResults.values = tempList;
 else 
 filterResults.count = friendList.size();
 filterResults.values = friendList;
 

 return filterResults;
 

 /**
 * Notify about filtered list to ui
 * @param constraint text
 * @param results filtered result
 */
 @SuppressWarnings("unchecked")
 @Override
 protected void publishResults(CharSequence constraint, FilterResults results) 
 filteredList = (ArrayList<User>) results.values;
 notifyDataSetChanged();
 

Implement Filterable to your adapter , and write the following code to your Override function getfilter.

 if (brandFilter == null) 
 Filter = new BrandFilter();
 

 return friendFilter;

Just call this method inside your activity , on onQueryTextChange

 mAdapetr.getFilter().filter(newText);

For temp list :

 private ArrayList<Model> filteredList;

and in your constructor

this.filteredList = auctionList

while publishing result , /**
* Notify about filtered list to ui
* @param constraint text
* @param results filtered result
*/
@SuppressWarnings("unchecked")
@Override
protected void publishResults(CharSequence constraint, FilterResults results)
filteredList = (ArrayList<Model>) results.values;
notifyDataSetChanged();