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我在製作測驗應用程序。對於MCQ的問題，我有一個我已經解析過的XML。 這是XML：解析XML並在TextView中顯示
<quiz>
<mchoice>
<question>Not a team sport for sure</question>
<id>1</id>
<option1>Cricket</option1>
<option2>Tennis</option2>
<option3>Rugby</option3>
<option4>Soccer</option4>
<answer>Tennis</answer>
</mchoice>
<mchoice>
<question>I am the biggest planet in the Solar System</question>
<id>2</id>
<option1>Saturn</option1>
<option2>Jupiter</option2>
<option3>Neptune</option3>
<option4>Pluto</option4>
<answer>Jupiter</answer>
</mchoice>
<mchoice>
<question>I am the closest star to the earth</question>
<id>3</id>
<option1>Milky way</option1>
<option2>Moon</option2>
<option3>Sun</option3>
<option4>North Star</option4>
<answer>Sun</answer>
</mchoice>
<mchoice>
<question>A number which is not prime</question>
<id>4</id>
<option1>31</option1>
<option2>61</option2>
<option3>71</option3>
<option4>91</option4>
<answer>91</answer>
</mchoice>
<mchoice>
<question>Which is correct?</question>
<id>5</id>
<option1>Foreine</option1>
<option2>Fariegn</option2>
<option3>Foreig</option3>
<option4>Foreign</option4>
<answer>Foreign</answer>
</mchoice>
</quiz>
這是XML解析器類我所用：
public class XMLParser {
// constructor
public XMLParser() {
}
/**
* Getting XML from URL making HTTP request
* @param url string
* */
public String getXmlFromUrl(String url) {
String xml = null;
try {
// defaultHttpClient
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost(url);
HttpResponse httpResponse = httpClient.execute(httpPost);
HttpEntity httpEntity = httpResponse.getEntity();
xml = EntityUtils.toString(httpEntity);
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
// return XML
return xml;
}
/**
* Getting XML DOM element
* @param XML string
* */
public Document getDomElement(String xml){
Document doc = null;
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
try {
DocumentBuilder db = dbf.newDocumentBuilder();
InputSource is = new InputSource();
is.setCharacterStream(new StringReader(xml));
doc = db.parse(is);
} catch (ParserConfigurationException e) {
Log.e("Error: ", e.getMessage());
return null;
} catch (SAXException e) {
Log.e("Error: ", e.getMessage());
return null;
} catch (IOException e) {
Log.e("Error: ", e.getMessage());
return null;
}
return doc;
}
/** Getting node value
* @param elem element
*/
public final String getElementValue(Node elem) {
Node child;
if(elem != null){
if (elem.hasChildNodes()){
for(child = elem.getFirstChild(); child != null; child = child.getNextSibling()){
if(child.getNodeType() == Node.TEXT_NODE ){
return child.getNodeValue();
}
}
}
}
return "";
}
/**
* Getting node value
* @param Element node
* @param key string
* */
public String getValue(Element item, String str) {
NodeList n = item.getElementsByTagName(str);
return this.getElementValue(n.item(0));
}
}
這是從我打電話XML解析器類和活動將解析的數據添加到其中包含hashMap的Arraylist中：
// All static variables
static final String URL = "http://gujaratimandal.org/data.xml";
// XML node keys
static final String KEY_MCHOICE = "mchoice"; // parent node
static final String KEY_QUESTION = "question";
static final String KEY_ID = "id";
static final String KEY_OPTION1 = "option1";
static final String KEY_OPTION2 = "option2";
static final String KEY_OPTION3 = "option3";
static final String KEY_OPTION4 = "option4";
static final String KEY_ANSWER = "answer";
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
ArrayList<HashMap<String, String>> menuItems = new ArrayList<HashMap<String, String>>();
XMLParser parser = new XMLParser();
String xml = parser.getXmlFromUrl(URL); // getting XML
Document doc = parser.getDomElement(xml); // getting DOM element
NodeList nl = doc.getElementsByTagName(KEY_MCHOICE);
// looping through all item nodes <item>
for (int i = 0; i < nl.getLength(); i++) {
// creating new HashMap
HashMap<String, String> map = new HashMap<String, String>();
Element e = (Element) nl.item(i);
// adding each child node to HashMap key => value
map.put(KEY_MCHOICE, parser.getValue(e, KEY_MCHOICE));
map.put(KEY_ID, parser.getValue(e, KEY_ID));
map.put(KEY_QUESTION, parser.getValue(e, KEY_QUESTION));
//map.put(KEY_QUESTION, parser.getValue(e, KEY_QUESTION));
map.put(KEY_OPTION1, parser.getValue(e, KEY_OPTION1));
map.put(KEY_OPTION2, parser.getValue(e, KEY_OPTION2));
map.put(KEY_OPTION3, parser.getValue(e, KEY_OPTION3));
map.put(KEY_OPTION4, parser.getValue(e, KEY_OPTION4));
map.put(KEY_ANSWER, parser.getValue(e, KEY_ANSWER));
// adding HashList to ArrayList
menuItems.add(map);
for (HashMap.Entry<String, String> entry : map.entrySet()) {
String display_id=entry.getKey();
String display_question = entry.getValue();
makeAToast(""+display_id+":"+ display_question);
}
}
makeAToast(""+menuItems.size());
}
public void makeAToast(String str) {
Toast toast = Toast.makeText(this,str, Toast.LENGTH_LONG);
toast.setGravity(Gravity.BOTTOM, 0, 0);
toast.setDuration(1000000);
toast.show();
}
問題是，數據正在檢索，但不是以所需的方式。
我要在以下格式檢索數據：
，這樣我可以從每一個問題填充這些TextViews與數據：
我該怎麼辦？
我不明白你的問題：您正在使用的祝酒詞，但你不希望有祝酒詞？ – njzk2
您是否收到錯誤？因爲您已經解析了XML文件，並且唯一要做的就是將這些值放入地圖列表中，然後將每個選項分配給一個變量，然後將值插入到屏幕上的文本視圖中。 – kabuto178
安排你的東西佈局。你得到的價值使用小工具以正確的方式。 –