Android Java传递XML解析器
我已经编写了一个程序从Eclipse中的XML文件中获取数据,并且我已经打印到一个文本视图中,以确保尝试工作正常,但是它没有传递数据,但是我不确定我是否获得了错误的参数,或者我调用的参数不正确,因此非常感谢您的帮助Android Java传递XML解析器,java,android,xml,xml-parsing,Java,Android,Xml,Xml Parsing,我已经编写了一个程序从Eclipse中的XML文件中获取数据,并且我已经打印到一个文本视图中,以确保尝试工作正常,但是它没有传递数据,但是我不确定我是否获得了错误的参数,或者我调用的参数不正确,因此非常感谢您的帮助 public class AnimalList extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceStat
public class AnimalList extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_animal_list);
//pulls data from XML file
XmlPullParserFactory pullParserFactory;
try
{
pullParserFactory = XmlPullParserFactory.newInstance();
XmlPullParser parser = pullParserFactory.newPullParser();
InputStream in_s = getApplicationContext().getAssets().open("animals.xml");
parser.setFeature(XmlPullParser.FEATURE_PROCESS_NAMESPACES, false);
parser.setInput(in_s, null);
parseXML(parser);
TextView display = (TextView)findViewById(R.id.animalInfo);
display.setText("crap");
}
catch (XmlPullParserException e)
{
e.printStackTrace();
}
catch (IOException e)
{
//Auto-generated catch block
e.printStackTrace();
}
}
我知道上面的工作是通过打印到文本视图,但下一步我有
private void parseXML(XmlPullParser parser) throws XmlPullParserException,IOException
{
ArrayList<Animal> animals = new ArrayList<Animal>();
int eventType = parser.getEventType();
Animal currentAnimal = null;
while (eventType != XmlPullParser.END_DOCUMENT)
{
String name = null;
switch (eventType)
{
case XmlPullParser.START_DOCUMENT:
//animals = new ArrayList();
break;
case XmlPullParser.START_TAG:
name = parser.getName();
if (name == "animal")
{
currentAnimal = new Animal();
}
else if (currentAnimal != null)
{
if (name == "specificLocation")
{
currentAnimal.specificLocation = parser.nextText();
}
else if (name == "name"){
currentAnimal.name = parser.nextText();
}
else if (name == "location")
{
currentAnimal.location= parser.nextText();
}
else if (name == "image")
{
currentAnimal.image= parser.nextText();
}
else if (name == "animalInfo")
{
currentAnimal.animalInfo= parser.nextText();
}
else if (name == "todaysFeed")
{
currentAnimal.todaysFeed= parser.nextText();
}
}
break;
case XmlPullParser.END_TAG:
name = parser.getName();
if (name.equalsIgnoreCase("animal") && currentAnimal != null){
animals.add(currentAnimal);
}
}
eventType = parser.next();
}
printAnimals(animals);
}
private void parseXML(XmlPullParser-parser)抛出xmlpullparsexception,IOException
{
ArrayList动物=新的ArrayList();
int eventType=parser.getEventType();
Animal currentAnimal=null;
while(eventType!=XmlPullParser.END_文档)
{
字符串名称=null;
开关(事件类型)
{
案例XmlPullParser.START_文档:
//动物=新的ArrayList();
打破
case XmlPullParser.START_标记:
name=parser.getName();
如果(名称==“动物”)
{
currentAnimal=新动物();
}
else if(currentAnimal!=null)
{
如果(名称=“特定位置”)
{
currentAnimal.specificLocation=parser.nextText();
}
else if(名称=“名称”){
currentAnimal.name=parser.nextText();
}
else if(名称=“位置”)
{
currentAnimal.location=parser.nextText();
}
else if(name==“image”)
{
currentAnimal.image=parser.nextText();
}
else if(name==“animalInfo”)
{
currentAnimal.animalInfo=parser.nextText();
}
else if(name==“todaysFeed”)
{
currentAnimal.todaysFeed=parser.nextText();
}
}
打破
case XmlPullParser.END_标记:
name=parser.getName();
if(name.equalsIgnoreCase(“动物”)和¤tAnimal!=null){
动物。添加(当前动物);
}
}
eventType=parser.next();
}
动物(动物);
}
然后它里面的代码什么也没做,所以希望有人能指出我是否正确地传递了它?在第二秒内,它只是将数据放入一个数组,但如果我在执行任何操作之前先放入一个文本视图输出,它就不会执行任何操作,这让我觉得它没有传递数据
谢谢。搜索标签名称您已经比较了引用,但没有比较字符串。除此之外,它工作得很好。因此,parseXML将如下所示:
private void parseXML(XmlPullParser parser) throws XmlPullParserException,IOException
{
ArrayList<Animal> animals = new ArrayList<Animal>();
int eventType = parser.getEventType();
Animal currentAnimal = null;
while (eventType != XmlPullParser.END_DOCUMENT)
{
String name = null;
switch (eventType)
{
case XmlPullParser.START_DOCUMENT:
//animals = new ArrayList();
break;
case XmlPullParser.START_TAG:
name = parser.getName();
if (name.equalsIgnoreCase( "animal"))
{
currentAnimal = new Animal();
}
else if (currentAnimal != null)
{
if (name.equalsIgnoreCase( "specificLocation"))
{
currentAnimal.specificLocation = parser.nextText();
}
else if (name .equalsIgnoreCase( "name")){
currentAnimal.name = parser.nextText();
}
else if (name .equalsIgnoreCase( "location"))
{
currentAnimal.location= parser.nextText();
}
else if (name .equalsIgnoreCase( "image"))
{
currentAnimal.image= parser.nextText();
}
else if (name .equalsIgnoreCase( "animalInfo"))
{
currentAnimal.animalInfo= parser.nextText();
}
else if (name .equalsIgnoreCase( "todaysFeed"))
{
currentAnimal.todaysFeed= parser.nextText();
}
}
break;
case XmlPullParser.END_TAG:
name = parser.getName();
if (name.equalsIgnoreCase("animal") && currentAnimal != null){
animals.add(currentAnimal);
}
}
eventType = parser.next();
}
printAnimals(animals);
}
private void parseXML(XmlPullParser-parser)抛出xmlpullparsexception,IOException
{
ArrayList动物=新的ArrayList();
int eventType=parser.getEventType();
Animal currentAnimal=null;
while(eventType!=XmlPullParser.END_文档)
{
字符串名称=null;
开关(事件类型)
{
案例XmlPullParser.START_文档:
//动物=新的ArrayList();
打破
case XmlPullParser.START_标记:
name=parser.getName();
if(名称、等信号情况(“动物”))
{
currentAnimal=新动物();
}
else if(currentAnimal!=null)
{
if(name.equalsIgnoreCase(“specificLocation”))
{
currentAnimal.specificLocation=parser.nextText();
}
else if(name.equalsIgnoreCase(“name”)){
currentAnimal.name=parser.nextText();
}
else if(name.equalsIgnoreCase(“位置”))
{
currentAnimal.location=parser.nextText();
}
else if(name.equalsIgnoreCase(“图像”))
{
currentAnimal.image=parser.nextText();
}
else if(name.equalsIgnoreCase(“animalInfo”))
{
currentAnimal.animalInfo=parser.nextText();
}
else if(name.equalsIgnoreCase(“todaysFeed”))
{
currentAnimal.todaysFeed=parser.nextText();
}
}
打破
case XmlPullParser.END_标记:
name=parser.getName();
if(name.equalsIgnoreCase(“动物”)和¤tAnimal!=null){
动物。添加(当前动物);
}
}
eventType=parser.next();
}
动物(动物);
}
希望有帮助:)
Marcin查看
parseXML()
中的代码会有所帮助。啊,我们还需要查看您在哪里创建解析器。