Wie zeigt/TOAST das zugehörige Element des String-Arrays auf Spinner aus Xml Parsing ausgewählt

Question

Wie Toast der zugehörige Wert auf den String-Wert ausgewählt aus dem SPINNER.

Ich bin in der Lage, die Spinner Datenaus dem unter XML-Format aber nicht in der Lage zu passieren seinen id, um sie für Toast zu bekommen.

**

APIGetCitiesResponse xmlns="http://xxxx"> 
<APIGetCitiesResult xmlns:a="http://xxxx.xxx" xmlns:i="http://www.w3.org/2010/XMLSchema-instance"> 
<a:Pair> 
<a:FromID>10</a:FromID>  <---This should Toast----> 
<a:FromName>INDIA</a:FromName><---On selecting this from spinner -------> 
<a:ToID>30</a:ToID> 
<a:ToName>TURKEY</a:ToName> 
</a:Pair> 
<a:Pair> 
<a:FromID>40</a:FromID> 
<a:FromName>USA</a:FromName> 
<a:ToID>10</a:ToID> 
<a:ToName>INDIA</a:ToName> 
</a:Pair> 
<a:Pair> 
<a:FromID>19</a:FromID> 
<a:FromName>CHINA</a:FromName> 
<a:ToID>40</a:ToID> 
<a:ToName>USA</a:ToName> 
</a:Pair> 
<a:Pair> 
<a:FromID>30</a:FromID> 
<a:FromName>TURKEY</a:FromName> 
<a:ToID>10</a:ToID> 
<a:ToName>INDIA</a:ToName> 
</a:Pair> 
</Result> 
</Response> 

**

MainActivity.java

public class MainActivity extends Activity implements AdapterView.OnItemSelectedListener, OnClickListener { 

    ArrayList<String> title; 
    ArrayList<String> title2; 
    Button button; 
    Spinner spinner; 
    Spinner spinner2; 
    private EditText fromDateEtxt; 
    //private EditText toDateEtxt; 

    private DatePickerDialog fromDatePickerDialog; 
    //private DatePickerDialog toDatePickerDialog; 

    private SimpleDateFormat dateFormatter; 

    ArrayAdapter<String> from_adapter; 
    ArrayAdapter<String> from_adapter2; 
    Map<String, List<String>> values = new HashMap<String, List<String>>(); 
    @TargetApi(Build.VERSION_CODES.GINGERBREAD) 
    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 


     title = new ArrayList<String>(); 
     title2 = new ArrayList<String>(); 

     button = (Button) findViewById(R.id.button1); 
     spinner = (Spinner) findViewById(R.id.spinner1); 
     spinner.setOnItemSelectedListener(this); 

     spinner2 = (Spinner) findViewById(R.id.spinner2); 
     //spinner2.setOnItemSelectedListener(this); 
     dateFormatter = new SimpleDateFormat("dd-MM-yyyy", Locale.US); 
     findViewsById(); 

     setDateTimeField(); 
     if (android.os.Build.VERSION.SDK_INT > 9) { 
      StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build(); 
      StrictMode.setThreadPolicy(policy); 
     } 


     button.setOnClickListener(new OnClickListener() 
     { 

      @Override 
      public void onClick(View v) { 
       // TODO Auto-generated method stub 

       parse(); 

       from_adapter=new ArrayAdapter<String>(getBaseContext(),android.R.layout.simple_spinner_item, title); 
       from_adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); 
       title2.clear(); 
       from_adapter2=new ArrayAdapter<String>(getBaseContext(),android.R.layout.simple_spinner_item, title2); 
       from_adapter2.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); 


       spinner.setAdapter(from_adapter); 
       //from_adapter2.clear(); 
       //from_adapter2.notifyDataSetChanged(); 
       spinner2.setAdapter(from_adapter2); 


      } 

      private Object from_adapter(int i) { 
       // TODO Auto-generated method stub 
       return null; 
      } 

     }); 


    } 
    public void onItemSelected(AdapterView<?> parent, View view, int pos, 
      long id) { 
     String lang_Name = parent.getItemAtPosition(pos).toString(); 
     List<String> lang_Key = values.get(lang_Name); 
     from_adapter2.clear(); 
      for(String s : lang_Key){ 
        from_adapter2.insert(s, from_adapter2.getCount()); 
      } 
      from_adapter2.notifyDataSetChanged(); 
     Toast.makeText(parent.getContext(), ""+lang_Key, 
       Toast.LENGTH_LONG).show(); 
    } 

    public void onNothingSelected(AdapterView<?> arg0) { 
    } 

    protected void parse() { 
     // TODO Auto-generated method stub 


     try { 

      URL url = new URL(
        "www.example.com"); 
      DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance(); 
      DocumentBuilder db = dbf.newDocumentBuilder(); 
      Document doc = db.parse(new InputSource(url.openStream())); 
      doc.getDocumentElement().normalize(); 

      NodeList nodeList = doc.getElementsByTagName("a:Pair"); 
      for (int i = 0; i < nodeList.getLength(); i++) { 
       Element el = (Element) nodeList.item(i); 
       // get the a:W value 
       String awValue = el.getElementsByTagName("a:FromName").item(0).getTextContent(); 
       // add the above value in our map as key if it isn't present in the map, this key will 
       // have a list associated with it in which ALL the values for a:R will be stored, if 
       // the awValue key is present then you just add the new a:R value to its list 
       if (!values.containsKey(awValue)) { 
        values.put(awValue, new ArrayList<String>()); 

       } 
       // also add the value pointed by a:R to the list associated with a:W 
       String arValue = el.getElementsByTagName("a:ToName").item(0).getTextContent(); 
       values.get(awValue).add(arValue); 

       // Log.d("ADebugTag", "Value: " + arValue); 
      } 
      Log.d("ADebugTag", "Value: " + values); 
      for (int i = 0; i < nodeList.getLength(); i++) { 

       Node node = nodeList.item(i);  

       Element fstElmnt = (Element) node; 
       NodeList nameList = fstElmnt.getElementsByTagName("a:FromName"); 
       Element nameElement = (Element) nameList.item(0); 
       nameList = nameElement.getChildNodes();   

       NodeList websiteList = fstElmnt.getElementsByTagName("a:ToName"); 
       Element websiteElement = (Element) websiteList.item(0); 
       websiteList = websiteElement.getChildNodes(); 

       title.add(((Node) nameList.item(0)).getNodeValue()); 

      } 
      NodeList nodeList2 = doc.getElementsByTagName("a:Pair"); 
      for (int i = 0; i < nodeList2.getLength(); i++) { 

       Node node = nodeList2.item(i);  

       Element fstElmnt = (Element) node; 
       NodeList nameList = fstElmnt.getElementsByTagName("a:ToName"); 
       Element nameElement = (Element) nameList.item(0); 
       nameList = nameElement.getChildNodes();   
       title2.add(((Node) nameList.item(0)).getNodeValue()); 

      } 
      Set<String> set = new LinkedHashSet<String>(title); 
      title = new ArrayList<String>(set); 
      // Collection<String> set = new LinkedHashSet<String>(months); 
      Set<String> set2 = new LinkedHashSet<String>(title2); 
      title2 = new ArrayList<String>(set2); 
      System.out.println("list are"); 
      System.out.println(set); 
      System.out.println("list 2 are"); 
      System.out.println(set2); 
     } catch (Exception e) { 
      System.out.println("XML Pasing Excpetion = " + e); 
     } 

    } 

    @Override 
    public void onClick(View view) { 
     if(view == fromDateEtxt) { 
      fromDatePickerDialog.show(); 
     } else { 
      Log.d("errorrrr", "soryy"); 
     } 

    } 
} 

Update: 1

Wenn ich den obigen Code wie unten beschrieben ändere, erhalte ich alle IDs, wenn der erste Spinner in Logcat Log.d ("fromid fromid", "fromid:" + fromid); aber wie man dies an den Spinner anhängt, so dass, wenn der pekuläre Wert angeklickt wird, seine spezielle ID Toasted ist.

NodeList nodeList = doc.getElementsByTagName("Pair"); 
    for (int i = 0; i < nodeList.getLength(); i++) { 
     Element el = (Element) nodeList.item(i); 

     String awValue = el.getElementsByTagName("FromName").item(0).getTextContent(); 
     if (!values.containsKey(awValue)) { 
      values.put(awValue, new ArrayList<String>()); 
      String fromid = el.getElementsByTagName("FromID").item(0).getTextContent(); 
      Log.d("fromid fromid", "fromid: " + fromid); 

     } 
     String arValue = el.getElementsByTagName("ToName").item(0).getTextContent(); 
     values.get(awValue).add(arValue); 
    } 

Answer 1

eine POJO Klasse erstellen für die XML-Antwort Städte.

City.java

public class City { 
    int id; 
    String name; 

    public City() { 
    } 

    public City(int id, String name) { 
     this.id = id; 
     this.name = name; 
    } 
    //getters ad setters 
} 

Anstatt die XML jedes Mal Parsen Parsen sie alle in einer einzigen Schleife.

parse Methode

Map<Integer, City> to = new HashMap<>(); 
Map<Integer, City> from = new HashMap<>(); 

protected void parse() { 
    try { 
     URL url = new URL("https://raw.githubusercontent.com/kushagrakhare/g/master/test.xml"); 
     DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance(); 
     DocumentBuilder db = dbf.newDocumentBuilder(); 
     Document doc = db.parse(new InputSource(url.openStream())); 
     doc.getDocumentElement().normalize(); 

     NodeList nodeList = doc.getElementsByTagName("a:CityPair"); 
     for (int i = 0; i < nodeList.getLength(); i++) { 
      Element el = (Element) nodeList.item(i); 
      // get the a:W value 
      String fromCityName = el.getElementsByTagName("a:FromCityName").item(0).getTextContent(); 
      int fromCityID = Integer.parseInt(el.getElementsByTagName("a:FromCityID").item(0).getTextContent()); 
      int toCityID = Integer.parseInt(el.getElementsByTagName("a:ToCityID").item(0).getTextContent()); 
      String toCityName = el.getElementsByTagName("a:ToCityName").item(0).getTextContent(); 

      City from1 = new City(fromCityID, fromCityName); 
      City to1 = new City(toCityID, toCityName); 
      from.put(fromCityID, from1); 
      to.put(toCityID, to1); 
     } 

     for (City item : from.values()) { 
      title.add(item.getName()); 
     } 

     for (City item : to.values()) { 
      title2.add(item.getName()); 
     } 

    } catch (Exception e) { 
     System.out.println("XML Pasing Excpetion = " + e); 
    } 

} 

Lagern Sie die Auswahl jedes spinner und immer dann, wenn sie sich ändert den Toast anzuzeigen.

onItemSelected Code

int spinner1SelectionPos; 
int spinner2SelectionPos; 
public void onItemSelected(AdapterView<?> parent, View view, int pos, long id) { 
    switch (parent.getId()) { 
     case R.id.spinner1: 
      spinner1SelectionPos = pos; 
      break; 
     case R.id.spinner2: 
      spinner2SelectionPos = pos; 
      break; 
    } 

    int fcityKey = getMapKey(from, title.get(spinner1SelectionPos)); 
    int tcityKey = getMapKey(to, title2.get(spinner2SelectionPos)); 

    String message = title.get(spinner1SelectionPos) + " " + fcityKey 
      + " " + title2.get(spinner2SelectionPos) + " " + tcityKey; 

    Toast.makeText(MainActivity.this, message, Toast.LENGTH_LONG).show(); 
} 

//for getting key from a map using value 
private int getMapKey(Map<Integer, City> map, String value) { 
    for (Map.Entry<Integer, City> item : map.entrySet()) { 
     if (item.getValue().getName().equals(value)) return item.getKey(); 
    } 

    return -1; 
}