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

<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" />

//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

}
});