xml domパーサーは、リストビューで結果を表示します

Question

私はxmlのメソッドを返すメソッドを持つWebサービスを持っています。このXMLを解析してリストビューで表示したいと思います。

主な活動

public class MainActivity extends ListActivity { 
    // All static variables 
    format=xml"; 
    // XML node keys 
    static final String KEY_ITEM = "Roomtype"; // parent node 
    static final String KEY_ID = "IDRoom"; 
    static final String KEY_NAME = "Code"; 
    static final String KEY_COST = "Normbed"; 
    static final String KEY_DESC = "Maxbed"; 
    static final String KEY_categroy = "Category"; 
    static final String KEY_order = "Order"; 

    ProgressBar pg; 
    String spin1; 
    String spin2; 
    String spin3; 
    String displayText; 
    TextView tv; 
    ListView lv; 
    int day, month, year; 
    ArrayList<HashMap<String, String>> menuItems; 
    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 

     Spinner spinner1 = (Spinner) findViewById(R.id.spinner1); 
     Spinner spinner2 = (Spinner) findViewById(R.id.spinner2); 
     Spinner spinner3 = (Spinner) findViewById(R.id.spinner3); 
     pg = (ProgressBar) findViewById(R.id.progressBar1); 
     spin1 = spinner1.getSelectedItem().toString(); 
     spin2 = spinner2.getSelectedItem().toString(); 
     spin3 = spinner3.getSelectedItem().toString(); 


     //Search 
     Button btn_search=(Button)findViewById(R.id.btn_search); 
     btn_search.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View v) { 
       //Create instance for AsyncCallWS 
       AsyncCallWS task = new AsyncCallWS(); 
       //Call execute 
       AsyncTask<String, Void, Void> xx=task.execute(); 

      } 
     }); 
    } 
private void parsexml(String xmlresult){ 

    ListView myList=(ListView)findViewById(android.R.id.list); 

    menuItems = new ArrayList<HashMap<String, String>>(); 

    XmlParser parser = new XmlParser(); 
    String xml = null; // getting XML 
    try { 
     xml = parser.getXmlFormUrl(xmlresult); 
    } catch (IOException e) { 
     e.printStackTrace(); 
    } 
    Document doc = parser.getDomElement(xml); // getting DOM element 
    NodeList nl = doc.getElementsByTagName(KEY_ITEM); 

    // 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_ID, parser.getValue(e, KEY_ID)); 
     map.put(KEY_NAME, parser.getValue(e, KEY_NAME)); 
     map.put(KEY_COST, "Rs." + parser.getValue(e, KEY_COST)); 
     map.put(KEY_DESC, parser.getValue(e, KEY_DESC)); 
     map.put(KEY_DESC, parser.getValue(e, KEY_categroy)); 
     map.put(KEY_DESC, parser.getValue(e, KEY_order)); 
     // adding HashList to ArrayList 
     menuItems.add(map); 
    } 
    // Adding menuItems to ListView 
    ListAdapter adapter = new SimpleAdapter(this, menuItems, 
      R.layout.list_item, 
      new String[] { KEY_NAME, KEY_DESC, KEY_COST,KEY_categroy,KEY_order }, new int[] { 
      R.id.name, R.id.desciption, R.id.cost,R.id.categroy,R.id.order }); 

    setListAdapter(adapter); 

} 

    private class AsyncCallWS extends AsyncTask<String, Void, Void> { 
     private Exception exception; 
     @Override 
     protected Void doInBackground(String... params) { 
      try { 
       //Invoke webservice 
       displayText = WebService.invokeHelloWorldWS(spin2, spin3, spin1, "search_availability"); 
       parsexml(displayText); 

      }catch (Exception e) { 
       this.exception = e; 
       return null; 
      } 
      return null; 
     } 

     @Override 
     protected void onPostExecute(Void result) { 

      //Make ProgressBar invisible 
      pg.setVisibility(View.INVISIBLE); 
     } 

     @Override 
     protected void onPreExecute() { 
      //Make ProgressBar invisible 
      pg.setVisibility(View.VISIBLE); 
     } 

     @Override 
     protected void onProgressUpdate(Void... values) { 
     } 

    } 

} 

XMLPARSERクラス

public class XmlParser { 

    String result; 
    public String getXmlFormUrl(String link) throws IOException { 
     URL url=new URL(link.toString()); 
     HttpURLConnection UrlConnection= (HttpURLConnection) url.openConnection(); 
     int status=UrlConnection.getResponseCode(); 
     if(status==200){ 
      InputStream inputStream=UrlConnection.getInputStream(); 
      BufferedReader bufferedReader=new BufferedReader(new InputStreamReader(inputStream,"UTF8")); 
      StringBuilder stringBuilder= new StringBuilder(); 
      String line; 
      while ((line=bufferedReader.readLine())!=null){ 
       stringBuilder.append((line+"\n")); 
      } 
      result=stringBuilder.toString(); 
      inputStream.close(); 
     } 
     return result; 
    } 
    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 DOM 
     return doc; 
    } 
    public String getValue(Element item, String str) { 
     NodeList n = item.getElementsByTagName(str); 
     return this.getElementValue(n.item(0)); 
    } 

    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 ""; 
    } 
} 

たときに結果が示されます検索ボタン上の私のタブこれは、メインのXMLファイルです。あなたはWebService.invokeHelloWorldWS(spin2, spin3, spin1, "search_availability"); CHAからのXML結果を使用して再度XML結果を取得しようとしている MainActivity.xml

<LinearLayout 
 
    xmlns:android="http://schemas.android.com/apk/res/android" 
 
    xmlns:tools="http://schemas.android.com/tools" 
 
    android:layout_width="match_parent" 
 
    android:layout_height="match_parent" 
 
    android:orientation="vertical" 
 
    android:paddingLeft="16dp" 
 
    android:paddingRight="16dp" 
 
    android:paddingTop="16dp" 
 
    android:paddingBottom="16dp" 
 
    tools:context=".MainActivity"> 
 

 
    <RelativeLayout 
 
     android:layout_width="match_parent" 
 
     android:layout_height="wrap_content" 
 
     android:orientation="horizontal"> 
 
     <TextView 
 
      android:id="@+id/tv_arrival" 
 
      android:layout_width="wrap_content" 
 
      android:layout_height="wrap_content" 
 
      android:layout_alignParentLeft="true" 
 
      android:layout_centerVertical="true" 
 
      android:text="Arrival Date"/> 
 

 
     <Button 
 
      android:id="@+id/btn_arrival" 
 
      android:layout_width="wrap_content" 
 
      android:layout_height="wrap_content" 
 
      android:layout_alignParentRight="true" 
 
      android:text="Set"/> 
 
    </RelativeLayout> 
 
    <RelativeLayout 
 
     android:layout_width="match_parent" 
 
     android:layout_height="wrap_content"> 
 
     <TextView 
 
      android:id="@+id/tv_departure" 
 
      android:layout_width="wrap_content" 
 
      android:layout_height="wrap_content" 
 
      android:layout_alignParentLeft="true" 
 
      android:layout_centerVertical="true" 
 
      android:text="Departure Date"/> 
 

 
     <Button 
 
      android:id="@+id/btn_departure" 
 
      android:layout_width="wrap_content" 
 
      android:layout_height="wrap_content" 
 
      android:layout_alignParentRight="true" 
 
      android:text="Set"/> 
 
    </RelativeLayout> 
 
    <RelativeLayout 
 
     android:layout_width="match_parent" 
 
     android:layout_height="wrap_content"> 
 
     <TextView 
 
      android:layout_width="wrap_content" 
 
      android:layout_height="wrap_content" 
 
      android:layout_alignParentLeft="true" 
 
      android:layout_centerVertical="true" 
 
      android:text="Persons"/> 
 
     <Spinner 
 
      android:id="@+id/spinner2" 
 
      android:layout_width="100dp" 
 
      android:layout_height="50dp" 
 
      android:layout_alignParentRight="true" 
 
      android:background="@android:drawable/btn_dropdown" 
 
      android:spinnerMode="dropdown" 
 
      android:entries="@array/array_person"/> 
 
    </RelativeLayout> 
 
    <RelativeLayout 
 
     android:layout_width="match_parent" 
 
     android:layout_height="wrap_content"> 
 
     <TextView 
 
      android:layout_width="wrap_content" 
 
      android:layout_height="wrap_content" 
 
      android:layout_alignParentLeft="true" 
 
      android:layout_centerVertical="true" 
 
      android:text="child"/> 
 
     <Spinner 
 
      android:id="@+id/spinner3" 
 
      android:layout_width="100dp" 
 
      android:layout_height="50dp" 
 
      android:layout_alignParentRight="true" 
 
      android:background="@android:drawable/btn_dropdown" 
 
      android:spinnerMode="dropdown" 
 
      android:entries="@array/array_child"/> 
 
    </RelativeLayout> 
 
    <RelativeLayout 
 
     android:layout_width="match_parent" 
 
     android:layout_height="wrap_content"> 
 
     <TextView 
 
      android:layout_width="wrap_content" 
 
      android:layout_height="wrap_content" 
 
      android:layout_alignParentLeft="true" 
 
      android:layout_centerVertical="true" 
 
      android:text="Rooms"/> 
 
     <Spinner 
 
      android:id="@+id/spinner1" 
 
      android:layout_width="100dp" 
 
      android:layout_height="50dp" 
 
      android:layout_alignParentRight="true" 
 
      android:background="@android:drawable/btn_dropdown" 
 
      android:spinnerMode="dropdown" 
 
      android:drawSelectorOnTop="true" 
 
      android:entries="@array/array_rooms" 
 
      /> 
 
    </RelativeLayout> 
 

 

 
    <RelativeLayout 
 
     android:layout_width="match_parent" 
 
     android:layout_height="wrap_content"> 
 
     <Button 
 
      android:id="@+id/btn_login" 
 
      android:layout_width="wrap_content" 
 
      android:layout_height="wrap_content" 
 
      android:layout_alignParentRight="true" 
 
      android:text="Login"/> 
 
     <Button 
 
      android:id="@+id/btn_search" 
 
      android:layout_width="wrap_content" 
 
      android:layout_height="wrap_content" 
 
      android:layout_alignParentLeft="true" 
 
      android:text="Search"/> 
 
    </RelativeLayout> 
 
    <RelativeLayout 
 
     android:layout_width="match_parent" 
 
     android:layout_height="wrap_content"> 
 

 
     <ListView 
 
      android:layout_width="wrap_content" 
 
      android:layout_height="wrap_content" 
 
      android:id="@android:id/list" 
 
      android:layout_alignParentTop="true" 
 
      android:layout_centerHorizontal="true" 
 
      android:layout_marginTop="73dp" /> 
 
    </RelativeLayout> 
 
    <ProgressBar 
 
     android:id="@+id/progressBar1" 
 
     android:layout_width="wrap_content" 
 
     android:layout_height="wrap_content" 
 
     android:layout_gravity="center_horizontal" 
 
     android:visibility="invisible" 
 
     /> 
 
</LinearLayout>

List_items.xml

<?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="wrap_content" 
 
    android:orientation="horizontal"> 
 
    <LinearLayout 
 
     xmlns:android="http://schemas.android.com/apk/res/android" 
 
     android:layout_width="fill_parent" 
 
     android:layout_height="wrap_content" 
 
     android:orientation="vertical"> 
 
     <!-- Name Label --> 
 
     <TextView 
 
      android:id="@+id/name" 
 
      android:layout_width="fill_parent" 
 
      android:layout_height="wrap_content" 
 
      android:textColor="#dc6800" 
 
      android:textSize="16sp" 
 
      android:textStyle="bold" 
 
      android:paddingTop="6dip" 
 
      android:paddingBottom="2dip" /> 
 
     <!-- Description label --> 
 
     <TextView 
 
      android:id="@+id/desciption" 
 
      android:layout_width="fill_parent" 
 
      android:layout_height="wrap_content" 
 
      android:textColor="#acacac" 
 
      android:paddingBottom="2dip"> 
 
     </TextView> 
 
     <!-- Linear layout for cost and price Cost: Rs.100 --> 
 
     <LinearLayout 
 
      xmlns:android="http://schemas.android.com/apk/res/android" 
 
      android:layout_width="fill_parent" 
 
      android:layout_height="wrap_content" 
 
      android:orientation="horizontal"> 
 
      <!-- Cost Label --> 
 
      <TextView 
 
       android:layout_width="wrap_content" 
 
       android:layout_height="wrap_content" 
 
       android:textColor="#5d5d5d" 
 
       android:gravity="left" 
 
       android:textStyle="bold" 
 
       android:text="Cost: " > 
 
      </TextView> 
 
      <!-- Price Label --> 
 
      <TextView 
 
       android:id="@+id/cost" 
 
       android:layout_width="wrap_content" 
 
       android:layout_height="wrap_content" 
 
       android:textColor="#acacac" 
 
       android:textStyle="bold" 
 
       android:gravity="left"> 
 
      </TextView> 
 
      <TextView 
 
       android:id="@+id/categroy" 
 
       android:layout_width="wrap_content" 
 
       android:layout_height="wrap_content" 
 
       android:textColor="#acacac" 
 
       android:textStyle="bold" 
 
       android:gravity="left"> 
 
      </TextView> 
 
      <TextView 
 
       android:id="@+id/order" 
 
       android:layout_width="wrap_content" 
 
       android:layout_height="wrap_content" 
 
       android:textColor="#acacac" 
 
       android:textStyle="bold" 
 
       android:gravity="left"> 
 
      </TextView> 
 
     </LinearLayout> 
 
    </LinearLayout> 
 

 
</LinearLayout>

Answer 1

コードを解析してXMLを解析してください。

例：

private void parsexml(String xmlresult){ 

    ListView myList=(ListView)findViewById(android.R.id.list); 

    menuItems = new ArrayList<HashMap<String, String>>(); 

    XmlParser parser = new XmlParser(); 
    Document doc = parser.getDomElement(xmlresult); // getting DOM element 
    NodeList nl = doc.getElementsByTagName(KEY_ITEM); 

    // 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_ID, parser.getValue(e, KEY_ID)); 
     map.put(KEY_NAME, parser.getValue(e, KEY_NAME)); 
     map.put(KEY_COST, "Rs." + parser.getValue(e, KEY_COST)); 
     map.put(KEY_DESC, parser.getValue(e, KEY_DESC)); 
     map.put(KEY_DESC, parser.getValue(e, KEY_categroy)); 
     map.put(KEY_DESC, parser.getValue(e, KEY_order)); 
     // adding HashList to ArrayList 
     menuItems.add(map); 
    } 
    // Adding menuItems to ListView 
    ListAdapter adapter = new SimpleAdapter(this, menuItems, 
      R.layout.list_item, 
      new String[] { KEY_NAME, KEY_DESC, KEY_COST,KEY_categroy,KEY_order }, new int[] { 
      R.id.name, R.id.desciption, R.id.cost,R.id.categroy,R.id.order }); 

    myList.setListAdapter(adapter); 
    ((BaseAdapter)adapter).notifyDataSetChanged(); 

} 

がsetListAdapter(adapter)後onPostExecute()とnotifyDataSetChanged()でparsexml()を実行することを忘れないでください。