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POAndroid and .NET Webservice - parsing the returned xml
 

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  1. POAndroid and .NET Webservice - parsing the returned xml
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    <p>So I have done a few "minor" things with web services and had some success, but when I attempted to tinker around with some stuff for fun I was encountering what I believe is me incorrectly parsing out the data to get the information that I need. I can get the entire xml as a string but not just the 3 programs that I need. The getPrograms and getInstitutions are similar enough that if I can get the programs part parsed right I can get the institutions. Where I am getting confused is what I believe is the "tags" and how much they differ from any tutorials to what I am actually using. I also went the way of the XmlPullParser but do not know if this is the best way about doing this (is it?). The format of what I am accessing is as follows:</p> <pre><code>&lt;DataSet&gt; &lt;xs:schema id="NewDataSet"&gt; &lt;xs:element name="NewDataSet" msdata:IsDataSet="true" msdata:UseCurrentLocale="true"&gt; &lt;xs:complexType&gt; &lt;xs:choice minOccurs="0" maxOccurs="unbounded"&gt; &lt;xs:element name="tblPrograms"&gt; &lt;xs:complexType&gt; &lt;xs:sequence&gt; &lt;xs:element name="Program" type="xs:string" minOccurs="0"/&gt; &lt;/xs:sequence&gt; &lt;/xs:complexType&gt; &lt;/xs:element&gt; &lt;/xs:choice&gt; &lt;/xs:complexType&gt; &lt;/xs:element&gt; &lt;/xs:schema&gt; &lt;diffgr:diffgram&gt; &lt;NewDataSet&gt; &lt;tblPrograms diffgr:id="tblPrograms1" msdata:rowOrder="0"&gt; &lt;Program&gt;Ancillary&lt;/Program&gt; &lt;/tblPrograms&gt; &lt;tblPrograms diffgr:id="tblPrograms2" msdata:rowOrder="1"&gt; &lt;Program&gt;Ancillary ESY&lt;/Program&gt; &lt;/tblPrograms&gt; &lt;tblPrograms diffgr:id="tblPrograms3" msdata:rowOrder="2"&gt; &lt;Program&gt;REAP&lt;/Program&gt; &lt;/tblPrograms&gt; &lt;/NewDataSet&gt; &lt;/diffgr:diffgram&gt; &lt;/DataSet&gt; </code></pre> <p>And my source code is as follows:</p> <pre><code>public class FirstScreen extends Activity { /** Called when the activity is first created. */ private static final String NAMESPACE = "http://tempuri.org/"; private static final String URL = "http://www.ces.org/android/android.asmx";//must point to where service is located /** HelloAndroid method */ //SOAP_ACTION = NAMESPACE + METHODNAME private static final String SOAP_ACTION = "http://tempuri.org/HelloAndroid"; private static final String METHOD_NAME = "HelloAndroid"; /** SelectInstitutionTypes method */ //SOAP_ACTION = NAMESPACE + METHODNAME private static final String SOAP_ACTION_INSTITUTIONS = "http://tempuri.org/SelectInstitutionTypes"; private static final String METHOD_NAME_INSTITUTIONS = "SelectInstitutionTypes"; /** SelectPrograms method */ //SOAP_ACTION = NAMESPACE + METHODNAME private static final String SOAP_ACTION_PROGRAMS = "http://tempuri.org/SelectPrograms"; private static final String METHOD_NAME_PROGRAMS = "SelectPrograms"; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); getHelloAndroid(); //getInstitutionTypes(); getPrograms(); }//end of onCreate private void getPrograms() { TextView tv3 = (TextView)findViewById(R.id.TextView03);//contains SelectInstitutionTypes information SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME_PROGRAMS); //soap serialization SoapSerializationEnvelope soapEnvelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);//running 1.1 soapEnvelope.dotNet=true;//to handle .net services asmx/aspx soapEnvelope.setOutputSoapObject(request);//package request //create transport object(s) HttpTransportSE aht = new HttpTransportSE(URL); try { aht.debug = true; //make the call aht.call(SOAP_ACTION_PROGRAMS, soapEnvelope); //in/out SoapObject resultString = (SoapObject)soapEnvelope.getResponse(); XmlPullParserFactory factory = XmlPullParserFactory.newInstance(); factory.setNamespaceAware(true); XmlPullParser xpp = factory.newPullParser(); xpp.setInput(new StringReader (resultString.toString())); int eventType = xpp.getEventType(); while(eventType != XmlPullParser.END_DOCUMENT){ if(eventType == XmlPullParser.START_DOCUMENT) { System.out.println("Start document"); } else if(eventType == XmlPullParser.START_TAG) { if(xpp.getName().equals("Program")) System.out.println("Start tag "+xpp.getName()); System.out.println("Program"+ xpp.getAttributeName(0)); } else if(eventType == XmlPullParser.END_TAG) { System.out.println("End tag "+xpp.getName()); } else if(eventType == XmlPullParser.TEXT) { System.out.println("Text "+xpp.getText()); } eventType = xpp.next(); } System.out.println("End document"); tv3.setBackgroundColor(Color.BLUE); tv3.setText("STATUS: " + resultString /*ks.toString()*/ + "\n\n" + "AHTHOST: " + aht.getHost() + "\n\n" + "NAHT STRING: " + aht.toString()); } catch(Exception e) { e.toString(); e.printStackTrace(); tv3.setText("EXCEPTION NAME: " + e.toString().toString() + "\n\n" + "EXCEPTION MESSAGE: " + e.getMessage() + " "); } }//end of getPrograms private void getInstitutionTypes() { TextView tv2 = (TextView)findViewById(R.id.TextView02);//contains SelectInstitutionTypes information //tv2.setText("TODO: SelectInstitutionTypes"); SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME_INSTITUTIONS); //soap serialization SoapSerializationEnvelope soapEnvelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);//running 1.1 soapEnvelope.dotNet=true;//to handle .net services asmx/aspx soapEnvelope.setOutputSoapObject(request);//package request //create transport object(s) HttpTransportSE aht = new HttpTransportSE(URL); try { aht.debug = true; //make the call aht.call(SOAP_ACTION_INSTITUTIONS, soapEnvelope); //in/out SoapObject resultString = (SoapObject)soapEnvelope.getResponse(); tv2.setText("STATUS: " + resultString /*ks.toString()*/ + "\n\n" + "AHTHOST: " + aht.getHost() + "\n\n" + "NAHT STRING: " + aht.toString()); } catch(Exception e) { e.toString(); e.printStackTrace(); tv2.setText("EXCEPTION NAME: " + e.toString().toString() + "\n\n" + "EXCEPTION MESSAGE: " + e.getMessage() + " "); } }//end of getInstitutionTypes public void getHelloAndroid() { TextView tv = (TextView)findViewById(R.id.TextView01);//contains HelloAndroid information SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME); //soap serialization SoapSerializationEnvelope soapEnvelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);//running 1.1 soapEnvelope.dotNet=true;//to handle .net services asmx/aspx soapEnvelope.setOutputSoapObject(request);//package request //create transport object(s) HttpTransportSE aht = new HttpTransportSE(URL); try { aht.debug = true; //make the call aht.call(SOAP_ACTION, soapEnvelope); //in/out SoapPrimitive resultString = (SoapPrimitive)soapEnvelope.getResponse(); tv.setBackgroundColor(Color.BLUE); tv.setText("STATUS: " + resultString + "\n\n" + "AHTHOST: " + aht.getHost() + "\n\n" + "NAHT STRING: " + aht.toString()); } catch(Exception e) { e.toString(); e.printStackTrace(); tv.setText("EXCEPTION NAME: " + e.toString().toString() + "\n\n" + "EXCEPTION MESSAGE: " + e.getMessage() + " "); } }//end of getHelloAndroid }//end of activity </code></pre>
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