实现类似Android联系人搜索功能

1》效果如下：

执行搜索：

2》布局文件如下：

res/layout/main_activity.xml

<LinearLayout 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"    android:orientation="vertical"    android:paddingBottom="@dimen/activity_vertical_margin"    android:paddingLeft="@dimen/activity_horizontal_margin"    android:paddingRight="@dimen/activity_horizontal_margin"    android:paddingTop="@dimen/activity_vertical_margin"    tools:context=".MainActivity">    <EditText        android:id="@+id/search_et"        android:hint="@string/search_et_hint"        android:layout_width="match_parent"        android:layout_height="wrap_content" />    <ListView        android:id="@+id/content_lv"        android:layout_width="match_parent"        android:layout_height="wrap_content">    </ListView></LinearLayout>

3》MainActivity.java

package com.sohu.cxc.edittextsearchdemo;import android.os.Message;import android.support.v7.app.ActionBarActivity;import android.os.Bundle;import android.text.Editable;import android.text.TextWatcher;import android.util.Log;import android.view.Menu;import android.view.MenuItem;import android.widget.ArrayAdapter;import android.widget.EditText;import android.widget.ListView;import java.util.ArrayList;import java.util.logging.Handler;public class MainActivity extends ActionBarActivity {    private static final String TAG = "MainActivity";    //声明控件    private EditText search_et;    private ListView content_lv;    //ListView 中要填充的数据    private String[] listItemValues = {"Java", "JavaSE", "JavaEE", "Oracle 8",            "Oracle 9i", "Oracle 10g"};    private ArrayAdapter<String> listViewAdapter;    private android.os.Handler myHandler;    private static final int MSG_SINGAL = 1001;    private static final String MSG_KEY = "MainActivity.MSG_KEY";    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        initViews();    }    //初始化控件、变量并对注册相应的事件    private void initViews() {        search_et = (EditText) findViewById(R.id.search_et);        content_lv = (ListView) findViewById(R.id.content_lv);        //注册事件        search_et.addTextChangedListener(new TextWatcher() {            @Override            public void beforeTextChanged(CharSequence s, int start, int count, int after) {            }            @Override            public void onTextChanged(CharSequence s, int start, int before, int count) {                Message msg = new Message();                msg.what = MSG_SINGAL;                Bundle data = new Bundle();                data.putString(MSG_KEY, s.toString());                msg.setData(data);                myHandler.sendMessage(msg);                Log.d(TAG, "----send:" + s.toString());            }            @Override            public void afterTextChanged(Editable s) {            }        });        listViewAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, listItemValues);        //注册Adapter        content_lv.setAdapter(listViewAdapter);        //handler        myHandler = new android.os.Handler() {            @Override            public void handleMessage(Message msg) {                super.handleMessage(msg);                switch (msg.what) {                    case MSG_SINGAL:                        //todo                        refreshListView(msg.getData().getString(MSG_KEY));                        break;                    default:                        break;                }            }        };    }    //根据搜索字符（串）更新ListView显示数据    private void refreshListView(String searchString) {        Log.d(TAG, "+++++++get:" + searchString);        if (searchString == null || searchString.trim().length() == 0) {//搜索字符串为空时，显示全部            listViewAdapter = new ArrayAdapter<String>(this,                    android.R.layout.simple_list_item_1, listItemValues);            content_lv.setAdapter(listViewAdapter);        }        ArrayList<String> tmpList = new ArrayList<String>();        for (String s : listItemValues) {            if (s.toLowerCase().contains(searchString.toLowerCase())) {//ListView 数据项中包含搜索字符串（不区分字符大小）                tmpList.add(s);            }        }            /*            if (tmpList.size() == 0)            return;            */        listViewAdapter = new ArrayAdapter<String>(this,                android.R.layout.simple_list_item_1, tmpList);        content_lv.setAdapter(listViewAdapter);        content_lv.invalidateViews();    }}