Java 如何在android中从web服务在listview中显示数据
my webservice以以下格式返回数据 ab cdef 我必须在listview中显示返回数据,这里是我的welcome.xml,我必须在其中显示数据 welcome.xmlJava 如何在android中从web服务在listview中显示数据,java,android,Java,Android,my webservice以以下格式返回数据 ab cdef 我必须在listview中显示返回数据,这里是我的welcome.xml,我必须在其中显示数据 welcome.xml <?xml version="1.0" encoding="utf-8" ?> - <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_pare
<?xml version="1.0" encoding="utf-8" ?>
- <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical">
<ImageView android:id="@+id/welcome" android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@drawable/main" android:layout_gravity="center_horizontal" />
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- <RelativeLayout android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_marginTop="10dip" android:id="@+id/Relative01">
<ListView android:id="@+id/lvevent" android:layout_width="fill_parent" android:layout_height="fill_parent" android:layout_below="@+id/welcome" android:background="@drawable/wel_bg" android:layout_marginBottom="50dip" />
</RelativeLayout>
- <TableLayout android:layout_height="fill_parent" android:layout_width="fill_parent" android:layout_below="@+id/Relative01">
- <TableRow>
<Button android:id="@+id/btn_index" android:layout_height="wrap_content" android:layout_width="wrap_content" android:background="@drawable/cap_button" android:paddingRight="15dip" android:layout_marginRight="50dip" />
<Button android:id="@+id/btn_event" android:layout_height="wrap_content" android:layout_width="wrap_content" android:background="@drawable/button" android:layout_toRightOf="@+id/btn_index" android:paddingLeft="25dip" android:layout_marginLeft="30dip" />
</TableRow>
</TableLayout>
</LinearLayout>
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如何在listview中显示数据
下面是我用于解析器的代码:
MYXMLHandler.java:
package org.parsing;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;
public class MyXMLHandler extends DefaultHandler{
Boolean currentElement = false;
String currentValue = null;
public static SitesList sitesList = null;
public static SitesList getSitesList() {
return sitesList;
}
public static void setSitesList(SitesList sitesList) {
MyXMLHandler.sitesList = sitesList;
}
/** Called when tag starts ( ex:- <name>AndroidPeople</name>
* -- <name> )*/
@Override
public void startElement(String uri, String localName, String qName,
Attributes attributes) throws SAXException {
currentElement = true;
if (localName.equals("content"))
{
/** Start */
sitesList = new SitesList();
} /*else if (localName.equals("website")) {
*//** Get attribute value *//*
String attr = attributes.getValue("category");
sitesList.setCategory(attr);
}*/
}
/** Called when tag closing ( ex:- <name>AndroidPeople</name>
* -- </name> )*/
@Override
public void endElement(String uri, String localName, String qName)
throws SAXException {
currentElement = false;
/** set value */
if (localName.equalsIgnoreCase("title"))
sitesList.setTitle(currentValue);
else if (localName.equalsIgnoreCase("description"))
sitesList.setDescription(currentValue);
}
/** Called to get tag characters ( ex:- <name>AndroidPeople</name>
* -- to get AndroidPeople Character ) */
public void characters(char[] ch, int start, int length)
throws SAXException {
if (currentElement) {
currentValue = new String(ch, start, length);
currentElement = false;
}
}
}
package-org.parsing;
导入org.xml.sax.Attributes;
导入org.xml.sax.SAXException;
导入org.xml.sax.helpers.DefaultHandler;
公共类MyXMLHandler扩展了DefaultHandler{
布尔currentElement=false;
字符串currentValue=null;
公共静态站点列表SitesList=null;
公共静态站点列表getSitesList(){
返回站点列表;
}
公共静态无效集合站点列表(站点列表站点列表){
MyXMLHandler.sitesList=sitesList;
}
/**标记启动时调用(例如:-AndroidPeople
* -- )*/
@凌驾
public void startElement(字符串uri、字符串localName、字符串qName、,
属性)引发SAX异常{
currentElement=true;
if(localName.equals(“内容”))
{
/**开始*/
sitesList=新建sitesList();
}/*else if(localName.equals(“网站”)){
*//**获取属性值*//*
字符串attr=attributes.getValue(“类别”);
sitesList.setCategory(属性);
}*/
}
/**标记关闭时调用(例如:-AndroidPeople
* -- )*/
@凌驾
公共void endElement(字符串uri、字符串localName、字符串qName)
抛出SAX异常{
currentElement=false;
/**设定值*/
if(localName.equalsIgnoreCase(“标题”))
sitesList.setTitle(当前值);
else if(localName.equalsIgnoreCase(“说明”))
SiteList.setDescription(当前值);
}
/**调用以获取标记字符(例如:-AndroidPeople
*——获得男性化(人物性格)*/
公共无效字符(字符[]ch,整数开始,整数长度)
抛出SAX异常{
if(当前元素){
currentValue=新字符串(ch、开始、长度);
currentElement=false;
}
}
}
SitesList.java:
package org.parsing;
import java.util.ArrayList;
public class SitesList {
/** Variables */
private ArrayList<String> title = new ArrayList<String>();
private ArrayList<String> description = new ArrayList<String>();
//private ArrayList<String> category = new ArrayList<String>();
/** In Setter method default it will return arraylist
* change that to add */
public ArrayList<String> getTitle() {
return title;
}
public void setTitle(String title) {
this.title.add(title);
}
public ArrayList<String> getDescription() {
return description;
}
public void setDescription(String description) {
this.description.add(description);
}
/*public ArrayList<String> getCategory() {
return category;
}
public void setCategory(String category) {
this.category.add(category);
}
*/
}
package-org.parsing;
导入java.util.ArrayList;
公共类站点列表{
/**变数*/
私有ArrayList title=新ArrayList();
私有ArrayList description=新ArrayList();
//私有ArrayList类别=新建ArrayList();
/**在Setter方法默认值中,它将返回arraylist
*将其更改为添加*/
公共数组列表getTitle(){
返回标题;
}
公共无效集合标题(字符串标题){
本.title.add(title);
}
公共ArrayList getDescription(){
返回说明;
}
公共void集合描述(字符串描述){
本.description.add(description);
}
/*公共阵列列表getCategory(){
退货类别;
}
公共无效集合类别(字符串类别){
本.category.add(category);
}
*/
}
XMLParsingExample.java:
package org.parsing;
import java.net.URL;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
import org.xml.sax.ContentHandler;
import org.xml.sax.InputSource;
import org.xml.sax.XMLReader;
import android.app.Activity;
import android.os.Bundle;
import android.widget.LinearLayout;
import android.widget.TextView;
public class XMLParsingExample extends Activity {
/** Create Object For SiteList Class */
SitesList sitesList = null;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
/** Create a new layout to display the view */
LinearLayout layout = new LinearLayout(this);
layout.setOrientation(1);
/** Create a new textview array to display the results */
TextView title[];
TextView description[];
//TextView category[];
try {
/** Handling XML */
SAXParserFactory spf = SAXParserFactory.newInstance();
SAXParser sp = spf.newSAXParser();
XMLReader xr = sp.getXMLReader();
/** Send URL to parse XML Tags */
URL sourceUrl = new URL(
"http://208.109.97.179:1010/webservices/newsevents.php");
/** Create handler to handle XML Tags ( extends DefaultHandler ) */
MyXMLHandler myXMLHandler = new MyXMLHandler();
xr.setContentHandler((ContentHandler) myXMLHandler);
xr.parse(new InputSource(sourceUrl.openStream()));
} catch (Exception e) {
System.out.println("XML Pasing Excpetion = " + e);
}
/** Get result from MyXMLHandler SitlesList Object */
sitesList = MyXMLHandler.sitesList;
/** Assign textview array lenght by arraylist size */
title = new TextView[sitesList.getTitle().size()];
description = new TextView[sitesList.getDescription().size()];
//category = new TextView[sitesList.getName().size()];
/** Set the result text in textview and add it to layout */
for (int i = 0; i < sitesList.getTitle().size(); i++) {
title[i] = new TextView(this);
title[i].setText("Title = "+sitesList.getTitle().get(i));
description[i] = new TextView(this);
description[i].setText("Website = "+sitesList.getDescription().get(i));
//category[i] = new TextView(this);
//category[i].setText("Website Category = "+sitesList.getCategory().get(i));
layout.addView(title[i]);
layout.addView(description[i]);
//layout.addView(category[i]);
}
/** Set the layout view to display */
setContentView(layout);
}
}
package-org.parsing;
导入java.net.URL;
导入javax.xml.parsers.SAXParser;
导入javax.xml.parsers.SAXParserFactory;
导入org.xml.sax.ContentHandler;
导入org.xml.sax.InputSource;
导入org.xml.sax.XMLReader;
导入android.app.Activity;
导入android.os.Bundle;
导入android.widget.LinearLayout;
导入android.widget.TextView;
公共类XMLParsingExample扩展活动{
/**为SiteList类创建对象*/
SitesList SitesList=null;
/**在首次创建活动时调用*/
@凌驾
创建时的公共void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
/**创建新布局以显示视图*/
LinearLayout布局=新的LinearLayout(本);
布局。设置方向(1);
/**创建新的textview数组以显示结果*/
文本视图标题[];
文本视图描述[];
//文本视图类别[];
试一试{
/**处理XML*/
SAXParserFactory spf=SAXParserFactory.newInstance();
SAXParser sp=spf.newSAXParser();
XMLReader xr=sp.getXMLReader();
/**发送URL以解析XML标记*/
URL sourceUrl=新URL(
"http://208.109.97.179:1010/webservices/newsevents.php");
/**创建处理XML标记的处理程序(扩展DefaultHandler)*/
MyXMLHandler MyXMLHandler=新的MyXMLHandler();
xr.setContentHandler((ContentHandler)myXMLHandler);
parse(新的InputSource(sourceUrl.openStream());
}捕获(例外e){
System.out.println(“XML-Pasing expetion=“+e”);
}
/**从MyXMLHandler SitleList对象获取结果*/
sitesList=MyXMLHandler.sitesList;
/**按arraylist大小指定textview数组长度*/
title=新文本视图[sitesList.getTitle().size()];
description=新文本视图[sitesList.getDescription().size()];
//category=新文本视图[sitesList.getName().size()];
/**在textview中设置结果文本并将其添加到布局*/
对于(int i=0;i
检查代码后,告诉我哪里错了,并告诉正确答案。一种解决方案是,解析来自web服务的XML响应,并将解析后的数据存储在数组中。然后只需使用数组适配器填充ListView。一种解决方案是,解析来自web服务的XML响应,并将解析后的数据存储在数组中。然后简单地使用数组适配器填充列表视图。谢谢你的回答。正如你所看到的,我已经解析了我的数据。因此,请告诉我如何将它们存储在数组中并在适配器中显示。使用类似这样的东西;setListAdapter(新的ArrayAdapter(getBaseContext(),R.layout.bulleted_列表_项,R.id.listItemDisplay,