Android 在自定义listview上实现搜索
我有一个Android 在自定义listview上实现搜索,android,search,listview,Android,Search,Listview,我有一个列表视图和编辑文本字段，我想实现搜索，但是我的列表视图是一个自定义的列表视图填充了类项的对象数组。当我按下键时，整个listview消失了，所以我想问题是它不能将char与类项的对象匹配，这就是为什么我按下键时没有结果的原因。 这是我的代码 filterText = (EditText) findViewById(R.id.editTextfilter); filterText.addTextChangedListener(filterTextWatcher); m_ite
列表视图编辑文本列表视图列表视图listview filterText = (EditText) findViewById(R.id.editTextfilter);
filterText.addTextChangedListener(filterTextWatcher);
m_items = new ArrayList<Item>();
phoneList=(ListView)findViewById(android.R.id.list);
phoneList.setTextFilterEnabled(true);
this.m_adapter = new ItemAdapter(this,R.layout.row,m_items);
phoneList.setAdapter(this.m_adapter);
private TextWatcher filterTextWatcher = new TextWatcher() {
public void afterTextChanged(Editable s) {
}
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
}
public void onTextChanged(CharSequence s, int start, int before,
int count) {
m_adapter.getFilter().filter(s.toString());
}
};
@Override
protected void onDestroy() {
super.onDestroy();
filterText.removeTextChangedListener(filterTextWatcher);
}
filterText=（EditText）findViewById（R.id.editTextfilter）；
filterText.addTextChangedListener（filterTextWatcher）；
m_items=new ArrayList（）；
phoneList=（ListView）findViewById（android.R.id.list）；
电话列表。setTextFilterEnabled（true）；
this.m_adapter=新项适配器（this，R.layout.row，m_项）；
电话列表.setAdapter（此.m_适配器）；
私有TextWatcher filterTextWatcher=新TextWatcher（）{
公共无效后文本已更改（可编辑）{
}
更改前的公共无效（字符序列、整数开始、整数计数、，
整数后）{
}
public void onTextChanged（字符序列，int start，int before，
整数计数）{
m_adapter.getFilter（）.filter（s.toString（））；
}
};
@凌驾
受保护的空onDestroy（）{
super.ondestory（）；
filterText.removeTextChangedListener（filterTextWatcher）；
}
任何关于如何让它工作的帮助我也有类似的要求。我使用了自定义过滤器
ArrayList<PostData> mPostingData = null;//arraylist of class items
ArrayList<PostData> mTemp = new ArrayList<PostData>();//temporary arraylist of class items
ArrayList<PostData> mOri = new ArrayList<PostData>();//Original arraylist
getListView().setTextFilterEnabled(true);
search= (EditText) findViewById(R.id.searchbox);
search.addTextChangedListener(new TextWatcher() {
public void onTextChanged(CharSequence s, int start, int before, int count) {
mCustomListView.getFilter().filter(s);
mCustomListView.notifyDataSetChanged();
}
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
}
public void afterTextChanged(Editable s) {
}
});
class PostData {
String mID;
String mPostedBy;
String mTitle;
String mMessage;
String mImageUrl;
String mVideoUrl;
String mType ;
boolean me=false;
}
class CustomListView extends ArrayAdapter {
Context context;
LayoutInflater mInflater;
private Bitmap mIcon1;
private Bitmap mIcon2;
private Bitmap mIcon3;
PostData mp ;
public CustomListView(Context c)
{
super(c, 0);
mInflater = (LayoutInflater)c.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
mIcon1 = BitmapFactory.decodeResource(c.getResources(), R.drawable.text_icon);
mIcon2 = BitmapFactory.decodeResource(c.getResources(), R.drawable.image_icon);
mIcon3 = BitmapFactory.decodeResource(c.getResources(), R.drawable.video_icon);
}
public int getCount() {
if(mPostingData!=null){
return mPostingData.size();
}else{
return 0;
}
}
public void setData(ArrayList<PostData> mPpst) {
mPostingData = mPpst;//contains class items data.
}
@Override
public Filter getFilter() {
return new Filter() {
@Override
protected void publishResults(CharSequence constraint, FilterResults results) {
if (results != null && results.count >= 0) {
setData((ArrayList<PostData>) results.values);//if results of search is null set the searched results data
} else {
setData(mOri);// set original values
}
notifyDataSetInvalidated();
}
@Override
protected FilterResults performFiltering(CharSequence constraint) {
FilterResults result = new FilterResults();
if (!TextUtils.isEmpty(constraint)) {
constraint = constraint.toString().toLowerCase();
ArrayList<PostData> foundItems = new ArrayList<PostData>();
if(mTemp!=null)
{
for(int i=0;i<mTemp.size();i++)
{
//If mTitle contains the string entered in Editext
if (mTemp.get(i).mTitle.toString().contains(constraint)) {
foundItems.add(mTemp.get(i));
}
else
{
}
}
}
result.count = foundItems.size();//search results found return count
result.values = foundItems;// return values
}
else
{
result.count=-1;// no search results found
}
return result;
}
};
}
public Object getItem(int arg0) {
// TODO Auto-generated method stub
return arg0;
}
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder;
///int type = getItemViewType(arg0);
Log.i("Aru","get View");
if(mPostingData == null ){
return null;
}
if (convertView == null) {
convertView = mInflater.inflate(R.layout.listviewimg, null);
convertView.setLayoutParams(new AbsListView.LayoutParams(LayoutParams.FILL_PARENT,
LayoutParams.WRAP_CONTENT));
// Creates a ViewHolder and store references to the two children views
// we want to bind data to.
holder = new ViewHolder();
holder.ll=(LinearLayout) convertView.findViewById(R.id.lvid);
holder.text = (TextView) convertView.findViewById(R.id.texttitle);
holder.text2 = (TextView) convertView.findViewById(R.id.tvst);
holder.icon = (ImageView) convertView.findViewById(R.id.llimage);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
mp = mPostingData.get(position);
String title = mp.mType;
if(mp.mTitle!=null && Name.equals(mp.mPostedBy )){
title = mp.mTitle+" "+title;
//holder.text.setBackgroundColor(Color.WHITE);
holder.ll.setBackgroundResource(R.drawable.listbkgme);
holder.text.setText(title);
}
else if(mp.mTitle!=null && Name!=mp.mPostedBy)
{
title = mp.mTitle+" "+title;
holder.text.setText(title);
}
if(mp.mMessage!=null && Name.equals(mp.mPostedBy )){
holder.ll.setBackgroundResource(R.drawable.listbkgme);
holder.text2.setText(mp.mMessage);
}
else if(mp.mMessage!=null && Name!=(mp.mPostedBy))
{
holder.text2.setText(mp.mMessage);
}
if(mp.mImageUrl!=null ){
holder.icon.setImageBitmap(mIcon2);
}else if(mp.mVideoUrl!=null){
holder.icon.setImageBitmap(mIcon3);
}else{
holder.icon.setImageBitmap(mIcon1);
}
return convertView;
}
class ViewHolder {
TextView text;
TextView text2;
ImageView icon;
LinearLayout ll;
}
public long getItemId(int position) {
return position;
}
}
类CustomListView扩展了ArrayAdapter{
语境；
拉平机；
私有位图mIcon1；
私有位图mIcon2；
私有位图mIcon3；
PostData mp；
公共CustomListView（上下文c）
{
super（c，0）；
mInflater=（LayoutInflater）c.getSystemService（Context.LAYOUT\u INFLATER\u SERVICE）；
mIcon1=BitmapFactory.decodeResource（c.getResources（），R.drawable.text_图标）；
mIcon2=BitmapFactory.decodeResource（c.getResources（），R.drawable.image_图标）；
mIcon3=BitmapFactory.decodeResource（c.getResources（），R.drawable.video_图标）；
}
public int getCount（）{
if（mPostingData！=null）{
返回mPostingData.size（）；
}否则{
返回0；
}
}
public void setData（ArrayList mPpst）{
mPostingData=mPpst；//包含类项数据。
}
@凌驾
公共过滤器getFilter（）{
返回新筛选器（）{
@凌驾
受保护的void publishResults（CharSequence约束、FilterResults结果）{
if（results！=null&&results.count>=0）{
setData（（ArrayList）results.values）；//如果搜索结果为空，则设置搜索结果数据
}否则{
setData（mOri）；//设置原始值
}
notifyDataSetionValidated（）；
}
@凌驾
受保护的筛选器结果性能筛选（CharSequence约束）{
FilterResults结果=新的FilterResults（）；
如果（！TextUtils.isEmpty（约束））{
constraint=constraint.toString（）.toLowerCase（）；
ArrayList foundItems=新建ArrayList（）；
如果（mTemp！=null）
{
对于自定义listview中的（int i=0；i，必须在适配器中创建一个筛选方法。创建如下数据类
package ali.search;
public class Data {
public Data() {
}
int id;
private String JobTitle;
private String Department;
private String Locationn;
private String JobRole;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getJobTitle() {
return JobTitle;
}
public void setJobTitle(String jobTitle) {
JobTitle = jobTitle;
}
public String getDepartment() {
return Department;
}
public void setDepartment(String department) {
Department = department;
}
public String getLocation() {
return Locationn;
}
public void setLocation(String location) {
Locationn = location;
}
public String getJobRole() {
return JobRole;
}
public void setJobRole(String jobRole) {
JobRole = jobRole;
}
}
package ali.search;
import java.util.ArrayList;
import android.os.Bundle;
import android.app.Activity;
import android.text.Editable;
import android.text.TextWatcher;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.ListView;
public class SearchActivity extends Activity {
String[] jobtitles = { "Android Developer", "Tester","iOS Developer",
};
String[] departments = { "android", "testing", "iphone" };
String[] locations = { "Delhi", "Mumbai", "Noida" };
String[] jobRoles = { "develop android based apps", "test mobile apps",
"develop iphone based apps" };
private ListView listViewSearch;
private EditText editSearchView;
private SearchAdapter adapter;
private ArrayList<Data> sortedItems = new ArrayList<Data>();
private ArrayList<Data> OrignalItems;
@Override
protected void onCreate(Bundle savedInstanceState) {
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_search);
listViewSearch = (ListView) findViewById(R.id.lvSearch);
editSearchView = (EditText) findViewById(R.id.edittext);
OrignalItems = getListOfType();
sortedItems.addAll(OrignalItems);
adapter = new SearchAdapter(SearchActivity.this, sortedItems);
listViewSearch.setAdapter(adapter);
editSearchView.addTextChangedListener(searchTxtChangeListener);
}
private ArrayList<Data> getListOfType() {
ArrayList<Data> dataList = new ArrayList<Data>();
for (int i = 0; i < 3; i++) {
Data data = new Data();
data.setJobTitle(jobtitles[i]);
data.setDepartment(departments[i]);
data.setLocation(locations[i]);
data.setJobRole(jobRoles[i]);
data.setId(i);
dataList.add(data);
dataList.add(data);// dulicate entry
}
return dataList;
}
private TextWatcher searchTxtChangeListener = new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
}
@Override
public void afterTextChanged(Editable s) {
}
@Override
public void onTextChanged(CharSequence s, int start, int before,
int count) {
int textlength = editSearchView.getText().length();
sortedItems.clear();
for (int i = 0; i < OrignalItems.size(); i++) {
if (textlength <= OrignalItems.get(i).getJobTitle().length()) {
if (editSearchView
.getText()
.toString()
.equalsIgnoreCase(
(String) OrignalItems.get(i).getJobTitle().subSequence(0,
textlength))) {
sortedItems.add(OrignalItems.get(i));
}
}
}
adapter.notifyDataSetChanged();
}
};
}
把活动课做成这样
package ali.search;
public class Data {
public Data() {
}
int id;
private String JobTitle;
private String Department;
private String Locationn;
private String JobRole;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getJobTitle() {
return JobTitle;
}
public void setJobTitle(String jobTitle) {
JobTitle = jobTitle;
}
public String getDepartment() {
return Department;
}
public void setDepartment(String department) {
Department = department;
}
public String getLocation() {
return Locationn;
}
public void setLocation(String location) {
Locationn = location;
}
public String getJobRole() {
return JobRole;
}
public void setJobRole(String jobRole) {
JobRole = jobRole;
}
}
package ali.search;
import java.util.ArrayList;
import android.os.Bundle;
import android.app.Activity;
import android.text.Editable;
import android.text.TextWatcher;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.ListView;
public class SearchActivity extends Activity {
String[] jobtitles = { "Android Developer", "Tester","iOS Developer",
};
String[] departments = { "android", "testing", "iphone" };
String[] locations = { "Delhi", "Mumbai", "Noida" };
String[] jobRoles = { "develop android based apps", "test mobile apps",
"develop iphone based apps" };
private ListView listViewSearch;
private EditText editSearchView;
private SearchAdapter adapter;
private ArrayList<Data> sortedItems = new ArrayList<Data>();
private ArrayList<Data> OrignalItems;
@Override
protected void onCreate(Bundle savedInstanceState) {
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_search);
listViewSearch = (ListView) findViewById(R.id.lvSearch);
editSearchView = (EditText) findViewById(R.id.edittext);
OrignalItems = getListOfType();
sortedItems.addAll(OrignalItems);
adapter = new SearchAdapter(SearchActivity.this, sortedItems);
listViewSearch.setAdapter(adapter);
editSearchView.addTextChangedListener(searchTxtChangeListener);
}
private ArrayList<Data> getListOfType() {
ArrayList<Data> dataList = new ArrayList<Data>();
for (int i = 0; i < 3; i++) {
Data data = new Data();
data.setJobTitle(jobtitles[i]);
data.setDepartment(departments[i]);
data.setLocation(locations[i]);
data.setJobRole(jobRoles[i]);
data.setId(i);
dataList.add(data);
dataList.add(data);// dulicate entry
}
return dataList;
}
private TextWatcher searchTxtChangeListener = new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
}
@Override
public void afterTextChanged(Editable s) {
}
@Override
public void onTextChanged(CharSequence s, int start, int before,
int count) {
int textlength = editSearchView.getText().length();
sortedItems.clear();
for (int i = 0; i < OrignalItems.size(); i++) {
if (textlength <= OrignalItems.get(i).getJobTitle().length()) {
if (editSearchView
.getText()
.toString()
.equalsIgnoreCase(
(String) OrignalItems.get(i).getJobTitle().subSequence(0,
textlength))) {
sortedItems.add(OrignalItems.get(i));
}
}
}
adapter.notifyDataSetChanged();
}
};
}
包ali.search；
导入java.util.ArrayList；
导入android.os.Bundle；
导入android.app.Activity；
导入android.text.Editable；
导入android.text.TextWatcher；
导入android.widget.EditText；
导入android.widget.ImageView；
导入android.widget.ListView；
公共类SearchActivity扩展了活动{
String[]jobtitles={“Android开发者”、“测试者”、“iOS开发者”，
};
String[]departments={“安卓”、“测试”、“iphone”}；
字符串[]位置={“德里”、“孟买”、“诺伊达”}；
String[]jobRoles={“开发基于android的应用程序”，“测试移动应用程序”，
“开发基于iphone的应用程序”}；
私有ListView listViewSearch；
私有编辑文本编辑搜索视图；
专用搜索适配器；
private ArrayList sortedItems=新ArrayList（）；
私人ArrayList原始岩；
@凌驾
创建时受保护的void（Bundle savedInstanceState）{
setRequestedOrientation（ActivityInfo.SCREEN\u ORIENTATION\u Picture）；
super.onCreate（savedInstanceState）；
setContentView（R.layout.activity\u search）；
listViewSearch=（ListView）findViewById（R.id.lvSearch）；
editSearchView=（EditText）findViewById（R.id.EditText）；
OrignalItems=getListOfType（）；
分类数据项addAll（原始数据项）；
适配器=新的SearchAdapter（SearchActivity.this，sortedItems）；
setAdapter（适配器）；
editSearchView.addTextChangedListener（searchTxtChangeListener）；
}
私有ArrayList getListOfType（）{
ArrayList dataList=新的ArrayList（）；
对于（int i=0；i<3；i++）{
数据=新数据（）；
数据。setJobTitle（jobtitles[i]）；
数据收集部门（部门[i]）；
数据设置位置（位置[i]）；
data.setJobRole（jobRoles[i]）；
数据集ID（i）；
dataList.add（数据）；
dataList.add（数据）；//重复输入
}
返回数据列表；
}
私有TextWatcher searchTxtChangeListener=新TextWatcher（）{
@凌驾
更改前的公共无效（字符序列、整数开始、整数计数、，
整数后）{
}
@凌驾
公共无效后文本已更改（可编辑）{
}
@凌驾
public void onTextChanged（字符序列，int start，int before，
整数计数）{
int textlength=editSearchView.getText（）.length（）；
sortedItems.clear（）；
对于（int i=0；i