Android自定义搜索框（EditText）的搜索功能实现，过滤ListView

实现自定义搜索框（实际上就是一个EditText）：

<RelativeLayout
        android:id="@+id/music_search_rl"
        android:layout_width="match_parent"
        android:layout_height="30dp"
        android:layout_margin="5dp"
        android:background="@drawable/acm_inputbox"
        android:focusableInTouchMode="true" >

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerInParent="true"
            android:drawableLeft="@drawable/icon_search"
            android:includeFontPadding="false"
            android:text="@string/search"
            android:textColor="#DFDFDF" />

        <EditText
            android:id="@+id/music_search_et"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:background="@android:color/transparent"
            android:hint="@null"
            android:singleLine="true" />
    </RelativeLayout>

    <ListView
        android:id="@+id/search_lv"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

acm_inputbox图片：

icon_search图片：

在相应的Activity类Java代码中，加入如下的功能代码：

//list.setTextFilterEnabled(true);
    
    search_et = (EditText)findViewById(R.id.music_search_et);
    search_et.addTextChangedListener(new TextWatcher() {
      @Override
      public void onTextChanged(CharSequence s, int start, int before, int count) {
        // TODO Auto-generated method stub
        String aa = s.toString();
        Pattern p = Pattern.compile(aa);
        
        
        //创建一个List集合，List集合的元素是Map
        List<Map<String, Object>> listItems = new ArrayList<Map<String, Object>>();
        for(int i = 0; i < pmiList.size(); i++) {
          PhoneMusicInfo pmi = pmiList.get(i);
          String pmiTitle = pmi.getTitle();
          Matcher matcher = p.matcher(pmiTitle);
          
          if(matcher.find()) {
            Map<String, Object> listItem = new HashMap<String, Object>();
            listItem.put("musicTitle", pmi.getTitle());
            listItems.add(listItem);            
          }
        }
        
        //创建一个SimpleAdapter，设置新的Adapter，替换原来的Adapter
        SimpleAdapter simpleAdapter = new SimpleAdapter(SelectMusic.this, listItems, R.layout.music_item,
            new String[] {"musicTitle"}, new int[] {R.id.music_item_tv});
        
        list.setAdapter(simpleAdapter);
        
        /*if(TextUtils.isEmpty(s))
          list.clearTextFilter();
        else
          list.setFilterText(s.toString());*/
      }
      
      @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
        
      }
    });