searching in android listview

Question

I have entered Business Name, City and Area in each listview item. I have placed a edit text on top of the list view for the searching process. i want to search listview item by Busines name, city and area, i have used the text watcher on edit text and used the filter; but this is not working. What should I do???

This is my code:

CustomerShowPointActivity.java :-

                    ListView lv = (ListView) findViewById(R.id.list);
                    final ShowPointAdapter adapter = new ShowPointAdapter(
                            CustomerShowPointActivity.this, item);
                    lv.setAdapter(adapter);
                    lv.setTextFilterEnabled(true);
                    lv.bringToFront();

                    // Locate the EditText in listview_main.xml
                    editsearch = (EditText) findViewById(R.id.et1);
                    // Capture Text in EditText
                    editsearch.addTextChangedListener(new TextWatcher() {
                        @Override
                        public void onTextChanged(CharSequence s, int start,
                                int before, int count) {

                        }

                        @Override
                        public void beforeTextChanged(CharSequence s, int start,
                                int count, int after) {
                        }

                        @Override
                        public void afterTextChanged(Editable s) {
                            String text = editsearch.getText().toString()
                                    .toLowerCase(Locale.getDefault());
                            adapter.filter(text);
                        }
                    });

And this is my Adapter class : -

public class ShowPointAdapter extends BaseAdapter {

// Declare Variables
Context mContext;
LayoutInflater mInflater;
private List<PointItem> item = null;
private ArrayList<PointItem> arraylist;
String search;

public ShowPointAdapter(Context context, List<PointItem> item) {
    mContext = context;
    this.item = item;
    mInflater = LayoutInflater.from(mContext);
    this.arraylist = new ArrayList<PointItem>();
    this.arraylist.addAll(item);
}

public class ViewHolder {
    TextView Bus_name;
    TextView bus_area;
    TextView bus_point;
}

@Override
public int getCount() {
    return item.size();
}

@Override
public PointItem getItem(int position) {
    return item.get(position);
}

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

public boolean isEnabled(int position) {
    return false;
}

@Override
public View getView(final int position, View view, ViewGroup parent) {
    final ViewHolder holder;
    if (view == null) {
        holder = new ViewHolder();
        view = mInflater.inflate(R.layout.customer_show_point_item, null);
        holder.Bus_name = (TextView) view
                .findViewById(R.id.item_bname);
        holder.bus_area = (TextView) view
                .findViewById(R.id.item_barea);
        holder.bus_point = (TextView) view
                .findViewById(R.id.bus_point);
        view.setTag(holder);
    } else {
        holder = (ViewHolder) view.getTag();
    }
    // set the result into textviews
    holder.Bus_name.setText(item.get(position).getbus_name());
    holder.bus_area.setText(item.get(position).getbus_area() + ", "
            + item.get(position).getbus_city());
    holder.bus_point.setText(item.get(position).getcus_bus_point());
    return view;
}

public void filter(String charText) {
    // TODO Auto-generated method stub
    charText = charText.toLowerCase(Locale.getDefault());
    item.clear();
    if (charText.length() == 0) {
        item.addAll(arraylist);
    } else {
        for (PointItem it : arraylist) {
            if (it.getbus_name().toLowerCase(Locale.getDefault())
                    .contains(charText)) {
                item.add(it);
            }
        }
    }
    notifyDataSetChanged();
}
}

Answer 1

I am not using Holder in my code... simply change the showPointAdapter class code...use

final ViewHolder holder;

just change the adapter class code :-

public class ShowPointAdapter extends BaseAdapter {


Context mContext;
LayoutInflater mInflater;
private List<PointItem> item = null;
private ArrayList<PointItem> arraylist;
String search;

public ShowPointAdapter(Context context, List<PointItem> item) {
    mContext = context;
    this.item = item;
    mInflater = LayoutInflater.from(mContext);
    this.arraylist = new ArrayList<PointItem>();
    this.arraylist.addAll(item);
}

public class ViewHolder {
    TextView Bus_name;
    TextView bus_area;
    TextView bus_point;
}

@Override
public int getCount() {
    return item.size();
}

@Override
public PointItem getItem(int position) {
    return item.get(position);
}

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

public boolean isEnabled(int position) {
    return false;
}

@Override
public View getView(final int position, View view, ViewGroup parent) {
    final ViewHolder holder;
    if (view == null) {
        holder = new ViewHolder();
        view = mInflater.inflate(R.layout.customer_show_point_item, null);
        holder.Bus_name = (TextView) view
                .findViewById(R.id.item_bname);
        holder.bus_area = (TextView) view
                .findViewById(R.id.item_barea);
        holder.bus_point = (TextView) view
                .findViewById(R.id.bus_point);
        view.setTag(holder);
    } else {
        holder = (ViewHolder) view.getTag();
    }
    // set the result into textviews
    holder.Bus_name.setText(item.get(position).getbus_name());
    holder.bus_area.setText(item.get(position).getbus_area() + ", "
            + item.get(position).getbus_city());
    holder.bus_point.setText(item.get(position).getcus_bus_point());
    return view;
}

public void filter(String charText) {
    // TODO Auto-generated method stub
    charText = charText.toLowerCase(Locale.getDefault());
    item.clear();
    if (charText.length() == 0) {
        item.addAll(arraylist);
    } else {
        for (PointItem it : arraylist) {
            if (it.getbus_name().toLowerCase(Locale.getDefault())
                    .contains(charText)) {
                item.add(it);
            }
        }
    }
    notifyDataSetChanged();
}
}