我无法完成在我的Android应用中进行研究。 我创建了一个editText，然后我添加了一个TextWatcher。在我的自定义数组适配器中，我重写了getFilter函数来过滤结果并更新列表视图。
我创建了一个edittext并在其上设置：
et.addTextChangedListener(new TextWatcher() {
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
adapter.getFilter().filter(s.toString());
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
// TODO Auto-generated method stub
}
@Override
public void afterTextChanged(Editable arg0) {
//ContactActivity.this.adapter.getFilter().filter(arg0);
}
我的ContactAdapter是：
public ContactAdapter(Context context, int textViewResourceId, ArrayList<String> objects) {
super(context, textViewResourceId, objects);
this.objects = objects;
}
/*
* we are overriding the getView method here - this is what defines how each
* list item will look.
*/
public View getView(int position, View convertView, ViewGroup parent){
// assign the view we are converting to a local variable
View v = convertView;
// first check to see if the view is null. if so, we have to inflate it.
// to inflate it basically means to render, or show, the view.
if (v == null) {
LayoutInflater inflater = (LayoutInflater) getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
v = inflater.inflate(R.layout.list_item, null);
}
/*
* Recall that the variable position is sent in as an argument to this method.
* The variable simply refers to the position of the current object in the list. (The ArrayAdapter
* iterates through the list we sent it)
*
* Therefore, i refers to the current Item object.
*/
String i = objects.get(position);
TextView tt = (TextView) v.findViewById(R.id.name);
if (i != null) {
// This is how you obtain a reference to the TextViews.
// These TextViews are created in the XML files we defined.
if (tt != null){
tt.setText(i);
}
}
// the view must be returned to our activity
return v;
}
@Override
public Filter getFilter() {
return new Filter() {
@Override
protected void publishResults(CharSequence constraint, FilterResults results) {
ArrayList<String> list = (ArrayList<String>) results.values;
int size = list.size();
//list.clear();
for (int i = 0; i<list.size();i++){
add(list.get(i));
}
notifyDataSetChanged();
}
@Override
protected FilterResults performFiltering(CharSequence constraint) {
ArrayList<String> filteredResults = getFilteredResults(constraint);
FilterResults results = new FilterResults();
results.values = filteredResults;
return results;
}
private ArrayList<String> getFilteredResults(CharSequence constraint) {
ArrayList<String> names = ContactAdapter.this.objects;
ArrayList<String> filteredNames = new ArrayList<String>();
for(int i=0;i< names.size();i++){
if(names.get(i).toLowerCase().startsWith(constraint.toString().toLowerCase())){
filteredNames.add(names.get(i));
}
}
return filteredNames;
}
};
}
}
连连呢？ 感谢
答案 0 :(得分：0)
您可以将此功能添加到您的自定义适配器：
@Override public Filter getFilter（）{
Filter myFilter = new Filter() {
@Override
protected void publishResults(CharSequence constraint, FilterResults results) {
// TODO Auto-generated method stub
if (!m_orders.isEmpty()){
clear();
}
for (int i = 0; i < tempList.size(); i++) {
if(tempList.get(i).getName().toLowerCase().startsWith(constraint.toString().toLowerCase())){
add(tempList.get(i));
}
}
notifyDataSetChanged();
}
@Override
protected FilterResults performFiltering(CharSequence constraint) {
// TODO Auto-generated method stub
return null;
}
};
return myFilter;
}
您可以将此过滤器搜索绑定到您的editText：
et_search.addTextChangedListener（new TextWatcher（）{
@Override
public void onTextChanged(CharSequence s, int start, int count,
int after) {
// TODO Auto-generated method stub
m_adapter.getFilter().filter(s, new FilterListener() {
@Override
public void onFilterComplete(int count) {
// TODO Auto-generated method stub
m_adapter.notifyDataSetChanged();
}
});
}
@Override
public void beforeTextChanged(CharSequence arg0, int arg1,
int arg2, int arg3) {
}
@Override
public void afterTextChanged(Editable str) {
}
});
答案 1 :(得分：0)
SOURCE CODE [main.xml]是
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout android:id="@+id/LinearLayout01"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical">
<EditText android:id="@+id/EditText01"
android:layout_height="wrap_content"
android:layout_width="fill_parent"
android:hint="Search">
</EditText>
<ListView android:id="@+id/ListView01"
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
</ListView>
</LinearLayout>
SOURCE CODE [ListViewSearchExample.java]是
package com.ListViewSearchExample;
import java.util.ArrayList;
import android.app.Activity;
import android.os.Bundle;
import android.text.Editable;
import android.text.TextWatcher;
import android.widget.ArrayAdapter;
import android.widget.EditText;
import android.widget.ListView;
public class ListViewSearchExample extends Activity
{
private ListView lv;
private EditText et;
private String listview_array[] = { "ONE", "TWO", "THREE", "FOUR", "FIVE",
"SIX", "SEVEN", "EIGHT", "NINE", "TEN" };
private ArrayList<String> array_sort= new ArrayList<String>();
int textlength=0;
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
lv = (ListView) findViewById(R.id.ListView01);
et = (EditText) findViewById(R.id.EditText01);
lv.setAdapter(new ArrayAdapter<String>(this,
android.R.layout.simple_list_item_1, listview_array));
et.addTextChangedListener(new TextWatcher()
{
public void afterTextChanged(Editable s)
{
// Abstract Method of TextWatcher Interface.
}
public void beforeTextChanged(CharSequence s,
int start, int count, int after)
{
// Abstract Method of TextWatcher Interface.
}
public void onTextChanged(CharSequence s,
int start, int before, int count)
{
textlength = et.getText().length();
array_sort.clear();
for (int i = 0; i < listview_array.length; i++)
{
if (textlength <= listview_array[i].length())
{
if(et.getText().toString().equalsIgnoreCase(
(String)
listview_array[i].subSequence(0,
textlength)))
{
array_sort.add(listview_array[i]);
}
}
}
lv.setAdapter(new ArrayAdapter<String>
(ListViewSearchExample.this,
android.R.layout.simple_list_item_1, array_sort));
}
});
}
}
同时查看这些链接......
http://androidsearchfilterlistview.blogspot.in/
http://software-workshop.eu/content/android-development-creating-custom-filter-listview
http://www.mysamplecode.com/2012/07/android-listview-edittext-filter.html
http://androidcocktail.blogspot.in/2012/04/search-custom-listview-in-android.html