Android: ListView making a search Filter

Question

Is there a way to create a search filter over my custom list view which created using BaseAdapter rather than ArrayAdapter, because I have only come across methods that are using ArrayAdapters in there Custom List Views. Follwing is what I have come acrossMaking a filter using Array Adapter

Answer 1

If you're using List collection then extend ArrayAdapter - it's subclass of BaseAdapter.

Override getView method (In your case just copy your old getView code with little modifications).

Override toString of object that is in your collection and set:

listView.setTextFilterEnabled(true);

Answer 2

Here is an example for list view created using base adapter. I searched a lot but didn't get any satisfactorily solution.Hence I thought to put it up so that in future it might help others.

Here is the code of history_container.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent" android:layout_height="fill_parent"
    android:orientation="vertical">
    <EditText android:layout_width="fill_parent" android:layout_height="wrap_content" 
        android:id="@+id/filter_text" />
    <FrameLayout android:layout_width="fill_parent"
        android:layout_height="fill_parent" android:id="@+id/historyContainerLayout" />
</LinearLayout>

Here is the code of history_list_view.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_height="wrap_content" android:gravity="left|center"
    android:layout_width="wrap_content" android:paddingBottom="5px"
    android:paddingTop="5px" android:paddingLeft="5px">
    <TextView android:text="@+id/historytext" android:id="@+id/historytext"
        android:layout_width="wrap_content" android:layout_height="wrap_content"
        android:layout_marginLeft="10px" android:textColor="#0099CC"/>
</LinearLayout>

Here is the code of history_schedule.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="fill_parent"
    android:layout_height="fill_parent">
    <ScrollView android:id="@+id/scrollItemInfo"
        android:layout_width="fill_parent" android:layout_height="1000dip">
        <LinearLayout android:orientation="vertical"
            android:layout_width="fill_parent" android:layout_height="fill_parent">
                <ListView android:id="@+id/historylist" android:layout_height="1000dip"
                        android:layout_width="fill_parent"/>
        </LinearLayout>
    </ScrollView>
</LinearLayout>

Sorry, I am not being able to put the code in correct format.Seems something has changed as there is no tag anymore which was nice.But for user convenience this is also a good idea to have tab. Maybe it is my fault that I'm not being able to post in correct format.And seems like we cannot post xml file content..So, think how the layout would have designed.

The activity code is :-

package com.testfilter;

import java.util.ArrayList;
import java.util.List;

import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.text.Editable;
import android.text.TextWatcher;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewStub;
import android.widget.BaseAdapter;
import android.widget.EditText;
import android.widget.FrameLayout;
import android.widget.ListView;
import android.widget.TextView;


public class TestFilterListView extends Activity {
    FrameLayout historyContainer;
    ViewStub viewStub;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.history_container);
        historyContainer = (FrameLayout) findViewById(R.id.historyContainerLayout);
        EditText filterEditText = (EditText) findViewById(R.id.filter_text);
        filterEditText.addTextChangedListener(new TextWatcher() {

            @Override
            public void onTextChanged(CharSequence s, int start, int before, int count) {

                historyContainer.removeAllViews();
                final List<String> tempHistoryList = new ArrayList<String>();
                tempHistoryList.addAll(historyList);
                for(String data : historyList) {
                    if(data.indexOf((s.toString())) == -1) {
                        tempHistoryList.remove(data);
                    }
                }
                viewStub = new ViewStub(TestFilterListView.this, R.layout.history_schedule);
                viewStub.setOnInflateListener(new ViewStub.OnInflateListener()
                {
                    public void onInflate(ViewStub stub, View inflated)
                    {

                        setUIElements(inflated, tempHistoryList);
                    }
                });
                historyContainer.addView(viewStub);
                viewStub.inflate();

            }

            @Override
            public void beforeTextChanged(CharSequence s, int start, int count,
                    int after) {
                // TODO Auto-generated method stub

            }

            @Override
            public void afterTextChanged(Editable s) {
                // TODO Auto-generated method stub

            }
        });

        setViewStub();
    }


    /********************************************************************************************************/
    private void setViewStub()
    {
        historyList.add("first");
        historyList.add("second");
        historyList.add("third");
        historyList.add("fourth");
        historyList.add("fifth");
        historyList.add("sixth");
        historyList.add("seventh");


        viewStub = new ViewStub(TestFilterListView.this, R.layout.history_schedule);
        viewStub.setOnInflateListener(new ViewStub.OnInflateListener()
        {
            public void onInflate(ViewStub stub, View inflated)
            {

                setUIElements(inflated, historyList);
            }
        });
        historyContainer.addView(viewStub);
        viewStub.inflate();
    }

    /********************************************************************************************************/
    final List<String> historyList = new ArrayList<String>();
    String displayName = "";
    ListView historyListView;
    private void setUIElements(View v, List<String> historyLists)
    {

        if (v != null)
        {
            historyScheduleData.clear();
            //historyList.clear();

            historyScheduleData.addAll(historyLists);
            historyListView = (ListView) findViewById(R.id.historylist);
            historyListView.setAdapter(new BeatListAdapter(this));

            registerForContextMenu(historyListView);


        }
    }

    /********************************************************************************************************/
    private static class BeatListAdapter extends BaseAdapter {
        private LayoutInflater mInflater;

        public BeatListAdapter(Context context) {
            mInflater = LayoutInflater.from(context);

        }

        public int getCount() {
            return historyScheduleData.size();
        }

        public Object getItem(int position) {
            return position;
        }

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

        public View getView(int position, View convertView, ViewGroup parent) {
            ViewHolder holder;
            if (convertView == null) {
                convertView = mInflater.inflate(R.layout.history_list_view, null);
                holder = new ViewHolder();
                holder.historyData = (TextView) convertView
                        .findViewById(R.id.historytext);

                convertView.setTag(holder);
            } else {
                holder = (ViewHolder) convertView.getTag();
            }

            holder.historyData.setText(historyScheduleData.get(position));

            return convertView;
        }

        static class ViewHolder {

            TextView historyData;
        }
    }

    private static final List<String> historyScheduleData = new ArrayList<String>();


}