MainActivity如下:

package cc.testfilterable;

import java.util.ArrayList;

import java.util.HashMap;

import android.os.Bundle;

import android.widget.ListView;

import android.app.Activity;

import android.content.Context;

/**

 * Demo描述:

 * 利用Filter过滤数据

 * 可用于AutoCompleteTextView筛选数据等功能

 *

 * 备注说明:

 * 该Demo只表述原理,代码逻辑较简单,有一些小的bug.

 * 完整的应用请参见以下资料.

 *

 * 参考资料:

 * 1 http://gundumw100.iteye.com/blog/1446507

 * 2 http://blog.csdn.net/ssstudio/article/details/7579089

 * 3 http://blog.csdn.net/jiahui524/article/details/7802033

 *

 */

public class MainActivity extends Activity {

	private Context mContext;

    private ListView mListView;

    private ListViewAdapter mListViewAdapter;

    private ArrayList<String> mArrayList;

    private HashMap<String, String> mHashMap;

	@Override

	protected void onCreate(Bundle savedInstanceState) {

		super.onCreate(savedInstanceState);

		setContentView(R.layout.main);

		init();

	}

	private void init(){

		mContext=this;

		mListView=(ListView) findViewById(R.id.listView);

		mArrayList=new ArrayList<String>();

		mArrayList.add("张三1");

		mArrayList.add("李四1");

		mArrayList.add("王五1");

		mArrayList.add("张三2");

		mArrayList.add("李四2");

		mArrayList.add("王五2");

		mArrayList.add("张三3");

		mArrayList.add("李四3");

		mArrayList.add("王五3");

		mArrayList.add("张三4");

		mArrayList.add("李四4");

		mArrayList.add("王五4");

		mListViewAdapter=new ListViewAdapter(mContext, mArrayList);

		//过滤数据

		//过滤出姓名里面包含"张"的数据

		mListViewAdapter.getFilter().filter("张");

		mListView.setAdapter(mListViewAdapter);

	}

}

ListViewAdapter如下:

package cc.testfilterable;

import java.util.ArrayList;

import java.util.Iterator;

import java.util.List;

import android.content.Context;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

import android.widget.BaseAdapter;

import android.widget.Filter;

import android.widget.TextView;

public class ListViewAdapter extends BaseAdapter {

	private NameFilter mNameFilter;

	private List<String> mArrayList;

	private List<String> mFilteredArrayList;

	private LayoutInflater mLayoutInflater;

	public ListViewAdapter(Context context,List<String> arrayList) {

		mArrayList = arrayList;

		mLayoutInflater=LayoutInflater.from(context);

		mFilteredArrayList=new ArrayList<String>();

	}

	@Override

	public int getCount() {

		if (mArrayList == null) {

			return 0;

		} else {

			return (mArrayList.size());

		}

	}

	@Override

	public Object getItem(int position) {

		if (mArrayList == null) {

			return null;

		} else {

			return mArrayList.get(position);

		}

	}

	@Override

	public long getItemId(int position) {

		return position;

	}

	public Filter getFilter() {

       if (mNameFilter == null) {

    	   mNameFilter = new NameFilter();

       }

      return mNameFilter;

    }  

	@Override

	public View getView(int position, View convertView, ViewGroup parent) {

		View itemView = null;

		itemView = convertView;

		ViewHolder viewHolder = null;

		if (itemView == null) {

			itemView = mLayoutInflater.inflate(R.layout.listviewitem, null);

			viewHolder = new ViewHolder();

			viewHolder.textView = (TextView) itemView.findViewById(R.id.textView);

			itemView.setTag(viewHolder);

		} else {

			viewHolder = (ViewHolder) itemView.getTag();

		}

		if (mArrayList != null) {

			if (viewHolder.textView != null) {

				viewHolder.textView.setText((mArrayList.get(position)));

			}

		}

		convertView = itemView;

		return convertView;

	}

	private class ViewHolder {

		TextView textView;

	}

	//过滤数据

	class NameFilter extends Filter {

		//执行筛选

		@Override

		protected FilterResults performFiltering(CharSequence charSequence) {

			FilterResults filterResults = new FilterResults();

			for (Iterator<String> iterator = mArrayList.iterator(); iterator.hasNext();) {

				String name = iterator.next();

				System.out.println("---> name=" + name);

				if (name.contains(charSequence)) {

					mFilteredArrayList.add(name);

				}

			}

			filterResults.values = mFilteredArrayList;

			return filterResults;

		}

		//筛选结果

		@Override

		protected void publishResults(CharSequence arg0, FilterResults results) {

			mArrayList = (List<String>) results.values;

			if (results.count > 0) {

				notifyDataSetChanged();

			} else {

				notifyDataSetInvalidated();

			}

		}}

}

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    >

    <ListView

        android:id="@+id/listView"

        android:layout_width="fill_parent"

        android:layout_height="fill_parent"

     />

</RelativeLayout>

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout

    xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="fill_parent"

    android:layout_height="wrap_content"

     >

    <TextView

       android:id="@+id/textView"

       android:layout_width="wrap_content"

       android:layout_height="50dip"

       android:gravity="center"

    />    

</LinearLayout>