Java 通过XMLParsing onTextChange自动完成TextView
我有这个问题。我需要向我的SAX解析器发送一个调用(每次用户尝试输入学生的姓名时)以获取姓名。我现在正在做的是向我的HttpHandler发送一个令牌字符串,它每次返回10条记录,因为学生总数约为40K,所以我无法一次解析所有记录。我正在调用AsyncTask以在AutoCompletetextview的ContextChanged事件中解析XML。但我仍然无法将适配器设置为自动完成Java 通过XMLParsing onTextChange自动完成TextView,java,xml-parsing,sax,autocompletetextview,Java,Xml Parsing,Sax,Autocompletetextview,我有这个问题。我需要向我的SAX解析器发送一个调用(每次用户尝试输入学生的姓名时)以获取姓名。我现在正在做的是向我的HttpHandler发送一个令牌字符串,它每次返回10条记录,因为学生总数约为40K,所以我无法一次解析所有记录。我正在调用AsyncTask以在AutoCompletetextview的ContextChanged事件中解析XML。但我仍然无法将适配器设置为自动完成 public ArrayList<AutoCompleteUserDataGetterSetter>
public ArrayList<AutoCompleteUserDataGetterSetter> parsexml(String token)
{
try {
SAXParserFactory saxPF = SAXParserFactory.newInstance();
SAXParser saxP = saxPF.newSAXParser();
XMLReader xmlR = saxP.getXMLReader();
URL url = new URL(xyz.com/xyz.ashx?token=+"token"); // URL of the XML
AutoCompleteUserDataXMLHandler myXMLHandler = new AutoCompleteUserDataXMLHandler();
xmlR.setContentHandler(myXMLHandler);
xmlR.parse(new InputSource(url.openStream()));
} catch (Exception e) {
System.out.println(e);
}
return data=AutoCompleteUserDataXMLHandler.getArrayData();
}
public ArrayList parsexml(字符串标记)
{
试一试{
SAXParserFactory saxPF=SAXParserFactory.newInstance();
SAXParser saxP=saxPF.newSAXParser();
XMLReader xmlR=saxP.getXMLReader();
URL URL=newURL(xyz.com/xyz.ashx?token=+“token”);//XML的URL
AutoCompleteUserDataXMLHandler myXMLHandler=新的AutoCompleteUserDataXMLHandler();
setContentHandler(myXMLHandler);
parse(新的InputSource(url.openStream());
}捕获(例外e){
系统输出打印ln(e);
}
返回数据=autocompleteServataXMLHandler.getArrayData();
}
这是我的AutoCompleteTextViewAdapter代码
ArrayList<AutoCompleteUserDataGetterSetter> data=new ArrayList<AutoCompleteUserDataGetterSetter>();
public UserNewMessageAutoCompleteAdapater(Context context,
int textViewResourceId,
ArrayList<AutoCompleteUserDataGetterSetter>data) {
super(context, textViewResourceId, data);
// TODO Auto-generated constructor stub
this.context = context;
this.data=data;
vi = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View v = convertView;
final AutoCompleteUserDataGetterSetter i = this.data.get(position);
if (i != null) {
Log.d("adapter", "in here");
AutoCompleteUserDataGetterSetter si = (AutoCompleteUserDataGetterSetter) i;
v = vi.inflate(R.layout.autocompletetext_layout, null);
final TextView title = (TextView) v
.findViewById(R.id.autocomplete_name);
TextView userid = (TextView) v
.findViewById(R.id.autocompleteuserid);
if (title != null)
title.setText(si.GetFullName());
userid.setText(si.GetUserId());
}
return v;
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return data.size();
}
@Override
public AutoCompleteUserDataGetterSetter getItem(int arg0) {
// TODO Auto-generated method stub
return data.get(arg0);
}
@Override
public long getItemId(int arg0) {
// TODO Auto-generated method stub
return 0;
}
ArrayList data=new ArrayList();
public usernewmessageautocompletedapter(上下文,
int textViewResourceId,
ArrayListdata){
super(上下文、textViewResourceId、数据);
//TODO自动生成的构造函数存根
this.context=上下文;
这个。数据=数据;
vi=(LayoutFlater)上下文
.getSystemService(上下文布局\充气机\服务);
}
@凌驾
公共视图getView(int位置、视图转换视图、视图组父视图){
视图v=转换视图;
最终自动完成SerDataGetterSetter i=this.data.get(位置);
如果(i!=null){
Log.d(“适配器”,“在这里”);
AutoCompleteTUserDataGettersetter si=(AutoCompleteTUserDataGettersetter)i;
v=vi.充气(R.layout.autocompletetext\u布局,空);
最终文本视图标题=(文本视图)v
.findviewbyd(R.id.autocomplete_name);
TextView用户ID=(TextView)v
.findViewById(R.id.autocompleteSerid);
如果(标题!=null)
title.setText(si.GetFullName());
userid.setText(si.GetUserId());
}
返回v;
}
@凌驾
public int getCount(){
//TODO自动生成的方法存根
返回data.size();
}
@凌驾
公共自动完成serdatagettersetter getItem(int arg0){
//TODO自动生成的方法存根
返回data.get(arg0);
}
@凌驾
公共长getItemId(int arg0){
//TODO自动生成的方法存根
返回0;
}
这是我的AsyncTask类
class SomeTask extends AsyncTask<Void, Void, Void> {
private final ProgressDialog dialog = new ProgressDialog(UserMessagesComposeNewActivity.this);
@Override
protected void onPreExecute() {
}
@Override
protected Void doInBackground(Void... voids) {
UserMessagesComposeNewActivity.this.data=parsexml(users.getText().toString());
for(int i=0;i<data.size();i++)
{
nameadapter.add(data.get(i).GetFullName());
useridadapter.add(data.get(i).GetUserId());
}
if(data==null)
{
AutoCompleteUserDataGetterSetter umsgs=new AutoCompleteUserDataGetterSetter();
umsgs.SetFullName(" ");
umsgs.SetUserID("");
data.add(umsgs);
}
return null;
}
@Override
protected void onPostExecute(Void aVoid) {
if (this.dialog.isShowing()) {
this.dialog.dismiss();
}
users.setAdapter(nameadapter);
}
}
class SomeTask扩展了AsyncTask{
private final ProgressDialog dialog=新建ProgressDialog(userMessagesComposeneActivity.this);
@凌驾
受保护的void onPreExecute(){
}
@凌驾
受保护的空位背景(空位…空位){
userMessagesComposeneActivity.this.data=parsexml(users.getText().toString());
对于(int i=0;i最终,经过一段时间的讨论,最终解决了这个问题
我放弃了自定义适配器方法,使用了ArrayAdapter方法。下面是通过选择用户姓名向用户发送消息的完整代码
public class UserMessagesComposeNewActivity extends Activity implements TextWatcher{
ArrayList<AutoCompleteUserDataGetterSetter> data=new
ArrayList<AutoCompleteUserDataGetterSetter>();
Long login;
Boolean shouldAutoComplete;
UserNewMessageAutoCompleteAdapater cdapater;
String TO,FROM;
Button btn;
AutoCompleteTextView users;
EditText edTextSubject,edTextMessage;
AutoCompleteWidget myAutoComplete;
List<String> nameadapter=new ArrayList<String>();
ArrayAdapter<String> dataAdapter ;
UserNewMessageAutoCompleteAdapater atAdapter;
String ResultEmail;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Intent intent=getIntent();
setContentView(R.layout.user_messages_compose_new);
login=intent.getLongExtra("EmployeedId", 0);
btn=(Button)findViewById(R.id.userNewmessageSendButton);
edTextSubject=(EditText)findViewById(R.id.userNewmessageSubject);
edTextMessage=(EditText)findViewById(R.id.userNewmessageMessage);
users=(AutoCompleteTextView)findViewById(R.id.userNewmessageAutoCT);
users.addTextChangedListener(this);
users.setThreshold(4);
//Here we get the selected value from autocompletetextview dropdown
users.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
for(int i=0;i<data.size();i++)
{
if(data.get(i).GetFullName().equals(users.getText().toString()))
{
TO=data.get(i).GetUserId();
}
else
{
TO="0";
}
}
}
});
//here we call the Send Email method.
btn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
new DomParserEmail().execute();
}
});
}
public void afterTextChanged(Editable s) {
}
public void beforeTextChanged(CharSequence arg0, int arg1, int arg2,
int arg3) {
// TODO Auto-generated method stub
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
if(s.length()>=4)
{
new SomeTask().execute();
}
}
class SomeTask extends AsyncTask<Void, Void, Void> {
private final ProgressDialog dialog = new ProgressDialog(UserMessagesComposeNewActivity.this);
@Override
protected void onPreExecute() {
}
@Override
protected Void doInBackground(Void... voids) {
//Here we are parsing the xml
UserMessagesComposeNewActivity.this.data=parsexml(users.getText().toString());
if(data==null)
{
AutoCompleteUserDataGetterSetter umsgs=new AutoCompleteUserDataGetterSetter();
umsgs.SetFullName(" ");
umsgs.SetUserID("");
data.add(umsgs);
}
return null;
}
@Override
protected void onPostExecute(Void aVoid) {
if (this.dialog.isShowing()) {
this.dialog.dismiss();
}
UserMessagesComposeNewActivity.this.nameadapter.clear();
for(int i=0;i<data.size();i++)
{
UserMessagesComposeNewActivity.this.nameadapter.add(UserMessagesComposeNewActivity.this.data.get(i).GetFullName());
}
dataAdapter = new ArrayAdapter<String>(getApplicationContext(),
android.R.layout.simple_dropdown_item_1line, nameadapter);
dataAdapter.notifyDataSetChanged();
users.setAdapter(dataAdapter);
users.showDropDown();
}
}
public ArrayList<AutoCompleteUserDataGetterSetter> parsexml(String token)
{
try {
SAXParserFactory saxPF = SAXParserFactory.newInstance();
SAXParser saxP = saxPF.newSAXParser();
XMLReader xmlR = saxP.getXMLReader();
URL url = new URL("blah blah"); // URL of the XML
/**
* Create the Handler to handle each of the XML tags.
**/
AutoCompleteUserDataXMLHandler myXMLHandler = new AutoCompleteUserDataXMLHandler();
xmlR.setContentHandler(myXMLHandler);
xmlR.parse(new InputSource(url.openStream()));
} catch (Exception e) {
System.out.println(e);
}
return data=AutoCompleteUserDataXMLHandler.getArrayData();
}
class DomParserEmail extends AsyncTask<Void, Void, Void> {
private final ProgressDialog dialog = new ProgressDialog(UserMessagesComposeNewActivity.this);
@Override
protected void onPreExecute() {
this.dialog.setMessage("Sending your message");
this.dialog.setTitle("Please Wait");
this.dialog.show();
}
@Override
protected Void doInBackground(Void... voids) {
// download and parse
UserMessagesComposeNewActivity.this.ResultEmail=EmailSuccessMessage(UserMessagesComposeNewActivity.this.edTextSubject.getText().toString(),UserMessagesComposeNewActivity.this.edTextMessage.getText().toString(),UserMessagesComposeNewActivity.this.TO,UserMessagesComposeNewActivity.this.login.toString());
return null;
}
@Override
protected void onPostExecute(Void aVoid) {
if (this.dialog.isShowing()) {
this.dialog.dismiss();
Toast toast=Toast.makeText(getApplicationContext(),UserMessagesComposeNewActivity.this.ResultEmail,Toast.LENGTH_LONG );
toast.show();
}
}
}
public String EmailSuccessMessage(String subject,String content,String To, String From) throws FactoryConfigurationError
{
try {
SAXParserFactory saxPF = SAXParserFactory.newInstance();
SAXParser saxP = saxPF.newSAXParser();
XMLReader xmlR = saxP.getXMLReader();
URL url = new URL("abc.com/abc.asahx?blah blah");
/**
* Create the Handler to handle each of the XML tags.
**/
UserReplyMessageXMLParsing myXMLHandler = new UserReplyMessageXMLParsing();
xmlR.setContentHandler(myXMLHandler);
xmlR.parse(new InputSource(url.openStream()));
}
catch (Exception e)
{
System.out.println(e);
UserMessagesComposeNewActivity.this.ResultEmail="Email Not Sent";
}
UserReplyMessageXMLParsing usmx=new UserReplyMessageXMLParsing();
UserMessagesComposeNewActivity.this.ResultEmail=usmx.GetEmailStatus();
return UserMessagesComposeNewActivity.this.ResultEmail;
}
}
公共类UserMessagesComposeneActivity扩展活动实现TextWatcher{
ArrayList数据=新建
ArrayList();
长登录;
布尔应自动完成;
UserNewMessageAutoCompleteAdapater CDAPeter;
串到,从;
按钮btn;
自动完成文本视图用户;
EditText edTextSubject,edTextMessage;
自动完成小部件myAutoComplete;
List nameadapter=new ArrayList();
阵列适配器;
UserNewMessageAutoCompleteAdapter或Adapter;
字符串ResultEmail;
创建时的公共void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
Intent=getIntent();
setContentView(R.layout.user\u messages\u compose\u new);
login=intent.getLongExtra(“EmployeedId”,0);
btn=(按钮)findViewById(R.id.userNewmessageSendButton);
edTextSubject=(EditText)findViewById(R.id.userNewmessageSubject);
edTextMessage=(EditText)findViewById(R.id.userNewmessageMessage);
users=(AutoCompleteTextView)findviewbyd(R.id.userNewmessageAutoCT);
users.addTextChangedListener(此);
设置阈值(4);
//这里我们从autocompletetextview下拉列表中获取所选值
setOnClickListener(新的OnClickListener(){
@凌驾
公共void onClick(视图arg0){
//TODO自动生成的方法存根
对于(int i=0;i=4)
{
新建SomeTask().execute();
}
}
类SomeTask扩展了AsyncTask{
private final ProgressDialog dialog=新建ProgressDialog(userMessagesComposeneActivity.this);
@凌驾
受保护的void onPreExecute(){
}
@凌驾
受保护的空位背景(空位…空位){
//这里我们正在解析xml
userMessagesComposeneActivity.this.data=parsexml(users.getText().toString());
如果(数据==null)
{
autocompleteeserdatagettersetter umsgs=新的autocompleteeserdatagettersetter();
umsgs.SetFullName(“”);
umsgs.SetUserID(“”);
添加数据(umsgs);
}
返回null;
}
@凌驾
受保护的void onPostExecute(void避免){
if(this.dialog.isShowing()){
this.dialog.disclose();
}
UserMessagesComposeneActivity.this.nameadapter.clear();
对于(int i=0;i