Async task inside fragment starts to execute before opening its fragment

Async task inside fragment starts to execute before opening its fragment - android

I am creating an app with tabs with fragment and swipable views ...
I have xml parser fragment which works in asynctask in background ..
The problem is that when i open the other fragment and not the xml parser fragment it starts the asynctask and shows progressbar dialog that keeps the user waiting till the task complete! How do i make it like that it will start the async task when i go to that xmlparser fragment only ? Can anybody help?
My code:
public class CircularsFragment extends Fragment {
// All static variables
public static final String URL = "https://dl.dropboxusercontent.com/7978967896/something.xml";
// XML node keys
static final String KEY_ITEM = "item"; // parent node
static final String KEY_ID = "id";
static final String KEY_NAME = "name";
static final String KEY_COST = "cost";
static final String KEY_DESC = "description";
ProgressDialog dialog;
// flag for Internet connection status
Boolean isInternetPresent = false;
// Connection detector class
ConnectionDetector cd;
private static class GetStuffFromUrlTask extends AsyncTask<String, Void, String> {
#Override
protected String doInBackground(String... params) {
String url = params[0];
String xml = "";
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;
}
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));
}
}
private static class ParseStuffIGotFromSomeWhereTask extends AsyncTask<String, Void, Document> {
#Override
protected Document doInBackground(String... params) {
String stringToParse = params[0];
Document document = new XMLParser().getDomElement(stringToParse);
return document;
}
}
private static class XMLParser {
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;
}
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState) {
final View rootView = inflater.inflate(R.layout.fragment_games, container, false);
setRetainInstance(true);
//check internet
cd = new ConnectionDetector(getActivity().getApplicationContext());
isInternetPresent = cd.isConnectingToInternet();
//This is the task we use to parse the XML we got back from the getStuffFromUrlTask
//do only if internet is present
if (isInternetPresent) {
final ParseStuffIGotFromSomeWhereTask parseTask = new ParseStuffIGotFromSomeWhereTask() {
#Override
protected void onPreExecute(){
}
#Override
public void onPostExecute(Document document) {
// here you can access the document that is the result of our parse operation
// progressDialog.dismiss();
//document.getElementsByTagName(XYZ)...
ArrayList<HashMap<String, String>> menuItems = new ArrayList<HashMap<String, String>>();
NodeList nl = document.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);
GetStuffFromUrlTask parser1 = new GetStuffFromUrlTask();
// adding each child node to HashMap key => value
map.put(KEY_ID, parser1.getValue(e, KEY_ID));
map.put(KEY_NAME, parser1.getValue(e, KEY_NAME));
map.put(KEY_COST, "Rs." + parser1.getValue(e, KEY_COST));
map.put(KEY_DESC, parser1.getValue(e, KEY_DESC));
// adding HashList to ArrayList
menuItems.add(map);
}
// Adding menuItems to ListView
ListAdapter adapter = new SimpleAdapter(getActivity(), menuItems,R.layout.list_item,
new String[] { KEY_NAME, KEY_DESC, KEY_COST }, new int[] {
R.id.name, R.id.desciption, R.id.cost });
final ListView lview = (ListView) rootView.findViewById(R.id.lview);
lview.setAdapter(adapter);
// selecting single ListView item
//ListView lv = getListView();
lview.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
// getting values from selected ListItem
String name = ((TextView) view.findViewById(R.id.name)).getText().toString();
String cost = ((TextView) view.findViewById(R.id.cost)).getText().toString();
String description = ((TextView) view.findViewById(R.id.desciption)).getText().toString();
// Starting new intent
Intent in = new Intent(getActivity().getApplicationContext(), SingleMenuItemActivity.class);
in.putExtra(KEY_NAME, name);
in.putExtra(KEY_COST, cost);
in.putExtra(KEY_DESC, description);
startActivity(in);
}
});
}
};
//This is the task we use to get stuff from the URL
GetStuffFromUrlTask getStuffFromUrlTask = new GetStuffFromUrlTask() {
protected void onPreExecute(){
dialog=ProgressDialog.show(getActivity(), "", "Loading...Please wait!");
}
#Override
public void onPostExecute(String result) {
//The task has completed, the string result contains the XML data we got from the URL
parseTask.execute(result); //Now we start the task to parse the xml
dialog.dismiss();
}
};
getStuffFromUrlTask.execute(URL);
}
else{
Toast.makeText(
getActivity().getApplicationContext(),
"No INTERNET! Circulars can't be loaded.",
Toast.LENGTH_LONG).show();
}
return rootView;
}
}

Related

Unable to start activity ComponentInfo{

I have the following mistake:
12-05 20:35:31.005: E/AndroidRuntime(1084): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.helplawyer/com.example.helplawyer.AndroidXMLParsingActivity}: android.os.NetworkOnMainThreadException
in xml manifest I added <uses-permission android:name="android.permission.INTERNET" />
this is my main class
package com.example.helplawyer;
public class AndroidXMLParsingActivity extends ListActivity {
// All static variables
static final String URL = "http://www.consultant.ru/rss/hotdocs.xml";
// XML node keys
static final String KEY_ITEM = "item"; // parent node
static final String KEY_TITLE = "title";
static final String KEY_DATE = "pubDate";
static final String KEY_LINK = "link";
static final String KEY_DESC = "description";
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.mainxml);
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_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_TITLE, parser.getValue(e, KEY_TITLE));
map.put(KEY_LINK, parser.getValue(e, KEY_LINK));
map.put(KEY_DATE, parser.getValue(e, KEY_DATE));
map.put(KEY_DESC, parser.getValue(e, KEY_DESC));
// adding HashList to ArrayList
menuItems.add(map);
}
// Adding menuItems to ListView
ListAdapter adapter = new SimpleAdapter(this, menuItems,
R.layout.list_item,
new String[] { KEY_TITLE, KEY_DESC, KEY_DATE, KEY_LINK }, new int[] {
R.id.name, R.id.description, R.id.cost, R.id.link });
setListAdapter(adapter);
// selecting single ListView item
ListView lv = getListView();
lv.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
// getting values from selected ListItem
String name = ((TextView) view.findViewById(R.id.name)).getText().toString();
String cost = ((TextView) view.findViewById(R.id.cost)).getText().toString();
String link = ((TextView) view.findViewById(R.id.link)).getText().toString();
String description = ((TextView) view.findViewById(R.id.description)).getText().toString();
// Starting new intent
Intent in = new Intent(getApplicationContext(), SingleMenuItemActivity.class);
in.putExtra(KEY_TITLE, name);
in.putExtra(KEY_DATE, cost);
in.putExtra(KEY_LINK, link);
in.putExtra(KEY_DESC, description);
startActivity(in);
}
});
}
}
XMLParser
package com.example.helplawyer;
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();
HttpGet httpGet = new HttpGet(url);
HttpResponse httpResponse = httpClient.execute(httpGet);
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));
}
}
I read on stackoverflow that I need to use new Thread(new Runnable() {
but I don't understand how to rewrite my code that my app works good.
Please, help me with my problem!
Thank you

From the Android documentation.
The exception that is thrown when an application attempts to perform a
networking operation on its main thread.
This is only thrown for applications targeting the Honeycomb SDK or
higher. Applications targeting earlier SDK versions are allowed to do
networking on their main event loop threads, but it's heavily
discouraged. See the document Designing for Responsiveness.
Also see StrictMode.
Look here for examples of running this operation in the background (Find "How to Avoid ANRs")

You cannot access network from your main thread.
you need to use AsyncTask . Check my answer at
Android Connecting with PHP and MySql Force Close
Note the AsyncTask<String, Void, String>, here first String is the parameter to doInBackground , Void is parameter to onProgressUpdate(), we are not implementing this method, second String is parameter to onPostExecute()
Now, from MainActivity when you call new InnerClass().execute(urltoxml); Android will automatically call doInBackground() and will pass urltoxml as the argument`
Do all your network stuff inside doInbackground, when finished, doInBackground will return a result string and android will pass that as the parameter to onPostExecute().
Use that string however you want from onPostExecute
public class MainActivity extends Activity implements OnClickListener{
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button button = (Button)findViewById(R.id.button1);
button.setOnClickListener( new OnClickListener(){
#Override
public void onClick(View v){
new InnerClass().execute(urltoxml);
}
});
}
public class InnerClass extends AsyncTask<String, Void, String>{
#Override
protected String doInBackground(String... arg0) {
String returnVal;
//process your xml here
//store the result in returnVal;
return returnVal;
}
#Override
protected void onPostExecute(String result) {
//do something with the data
}
}
}

You are running Network Request on main UI thread.
Android >=3.0 does not allow to run Network Request on main UI thread. You need to use
AsyncTask to do network operation.

Arranging xml data in a rows of a grid-view in android

<NewDataSet>
<Table>
<Cust_Name>Dev</Cust_Name>
<Order_No>OR00000009</Order_No>
<Freight_Rate>68000</Freight_Rate>
<Station_Name>Chennai</Station_Name>
<Station_Name1>Kolkatta</Station_Name1>
</Table>
<Table>
<Cust_Name>FSL</Cust_Name>
<Order_No>OR00000010</Order_No>
<Freight_Rate>6000</Freight_Rate>
<Station_Name>Mumbai</Station_Name>
<Station_Name1>Pune</Station_Name1>
</Table>
<Table>
<Cust_Name>FSL</Cust_Name>
<Order_No>OR00000011</Order_No>
<Freight_Rate>7000</Freight_Rate>
<Station_Name>Mumbai</Station_Name>
<Station_Name1>Pune</Station_Name1>
</Table>
<Table>
<Cust_Name>FSL</Cust_Name>
<Order_No>OR00000012</Order_No>
<Freight_Rate>7000</Freight_Rate>
<Station_Name>Chennai</Station_Name>
<Station_Name1>Bangalore</Station_Name1>
</Table>
</NewDataSet>
How to arrange Cust_Name,Order_No,Freight_Rate etc,.. in a row of a gridview in android?
This is the exact link for the above XML file
"http://54.251.60.177/StudentWebService/StudentDetail.asmx/GetTMSOrders"
Sources for reference
public class GridSample extends Activity
{
// All static variables
static final String URL = "http://54.251.60.177/StudentWebService/StudentDetail.asmx/GetTMSOrders";
// XML node keys
static final String KEY_TABLE = "Table"; // parent node
static final String KEY_CUST = "Cust_Name";
static final String KEY_ORDER = "Order_No";
static final String KEY_FREIGHT = "Freight_Rate";
#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_TABLE);
// 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_CUST, parser.getValue(e, KEY_CUST));
map.put(KEY_ORDER, parser.getValue(e, KEY_ORDER));
map.put(KEY_FREIGHT,parser.getValue(e, KEY_FREIGHT));
// adding HashList to ArrayList
menuItems.add(map);
}
// Adding menuItems to ListView
ListAdapter adapter = new SimpleAdapter(this, menuItems,
R.layout.grid_item,new String[] { KEY_CUST, KEY_ORDER, KEY_FREIGHT },
new int[] { R.id.name, R.id.desciption, R.id.cost });
GridView gv = (GridView)findViewById(R.id.gridVi);
gv.setAdapter(adapter);
gv.setOnItemClickListener(new OnItemClickListener()
{
public void onItemClick(AdapterView<?> parent, View view,
int position, long id)
{
// getting values from selected ListItem
String name = ((TextView) view.findViewById(R.id.name)).getText().toString();
String cost = ((TextView) view.findViewById(R.id.cost)).getText().toString();
String description = ((TextView) view.findViewById(R.id.desciption)).getText().toString();
// Starting new intent
Intent in = new Intent(getApplicationContext(), SingleMenuItemActivity.class);
in.putExtra(KEY_CUST, name);
in.putExtra(KEY_ORDER, cost);
in.putExtra(KEY_FREIGHT, description);
startActivity(in);
}
});
}}
SingleMenuItemActivity.java
public class SingleMenuItemActivity extends Activity {
// XML node keys
static final String KEY_CUST = "Cust_Name";
static final String KEY_ORDER = "Order_No";
static final String KEY_FREIGHT = "Freight_Rate";
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.single_grid_item);
// getting intent data
Intent in = getIntent();
// Get XML values from previous intent
String cust = in.getStringExtra(KEY_CUST);
String order = in.getStringExtra(KEY_ORDER);
String freight = in.getStringExtra(KEY_FREIGHT);
// Displaying all values on the screen
TextView lblcust = (TextView) findViewById(R.id.cust_label);
TextView lblorder = (TextView) findViewById(R.id.Order_label);
TextView lblfreight = (TextView) findViewById(R.id.freight_label);
lblcust.setText(cust);
lblorder.setText(order);
lblfreight.setText(freight);
}}
XMLParser.java
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));
}}
Thanks a lot!..

you can set your xml file layout in horizontal way and try parsing xml in that gridview

How to set a row for grid-view in android?

Right now i am displaying the data from XML file in to grid view in android.This is the exact xml's file link
"http://54.251.60.177/StudentWebService/StudentDetail.asmx/GetTMSOrders" which
i am trying to show.I have done that concept successfully, but here the problem is,i am not getting the answer like the below image
i need to show like the below image, in android
but i am getting only like the below image.....
How to overcome this concept?can any one please make me clear?
thanks for your precious time!..
Here my sources for reference,please find
GridviewSample.java
public class GridviewSample extends Activity
{
// All static variables
static final String URL = "http://54.251.60.177/StudentWebService/StudentDetail.asmx/GetTMSOrders";
// XML node keys
static final String KEY_TABLE = "Table"; // parent node
static final String KEY_CUST = "Cust_Name";
static final String KEY_ORDER = "Order_No";
static final String KEY_FREIGHT = "Freight_Rate";
static final String KEY_STATION1 = "Station_Name";
static final String KEY_STATION2 = "Station_Name1";
#Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
GridView gv = (GridView)findViewById(R.id.gridView1);
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_TABLE);
// 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_CUST, parser.getValue(e, KEY_CUST));
map.put(KEY_ORDER, parser.getValue(e, KEY_ORDER));
map.put(KEY_FREIGHT, parser.getValue(e, KEY_FREIGHT));
map.put(KEY_STATION1, parser.getValue(e, KEY_STATION1));
map.put(KEY_STATION2, parser.getValue(e, KEY_STATION2));
// adding HashList to ArrayList
menuItems.add(map);
}
// Adding menuItems to ListView
SimpleAdapter adapter = new SimpleAdapter(this, menuItems,R.layout.grid_item,
new String[] { KEY_CUST, KEY_ORDER, KEY_FREIGHT,KEY_STATION1,KEY_STATION2 }, new int[]
{
R.id.cust, R.id.order, R.id.freight,R.id.statio1,R.id.station2 });
gv.setAdapter(adapter);
gv.setOnItemClickListener(new OnItemClickListener()
{
public void onItemClick(AdapterView<?> Table, View v,int position, long id)
{
String cust = ((TextView) v.findViewById(R.id.cust)).getText().toString();
String order = ((TextView) v.findViewById(R.id.order)).getText().toString();
String freight = ((TextView) v.findViewById(R.id.freight)).getText().toString();
String station1 = ((TextView) v.findViewById(R.id.statio1)).getText().toString();
String station2 = ((TextView) v.findViewById(R.id.station2)).getText().toString();
// Starting new intent
Intent in = new Intent(getApplicationContext(), Single_gridview_item.class);
in.putExtra(KEY_CUST, cust);
in.putExtra(KEY_ORDER, order);
in.putExtra(KEY_FREIGHT, freight);
in.putExtra(KEY_STATION1, station1);
in.putExtra(KEY_STATION2, station2);
startActivity(in);
}
});
} }
Single_gridview_item
public class Single_gridview_item extends Activity
{
// XML node keys
static final String KEY_TABLE = "Table"; // parent node
static final String KEY_CUST_NAME = "Cust_Name";
static final String KEY_ORDER = "Order_No";
static final String KEY_FREIGHT = "Freight_Rate";
static final String KEY_STATION1 = "Station_Name";
static final String KEY_STATION2="Station_Name1";
#Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.single_grid_item);
// getting intent data
Intent in = getIntent();
// Get XML values from previous intent
String cust = in.getStringExtra(KEY_CUST_NAME);
String order = in.getStringExtra(KEY_ORDER);
String freight = in.getStringExtra(KEY_FREIGHT);
String station1 = in.getStringExtra(KEY_STATION1);
String station2 = in.getStringExtra(KEY_STATION2);
// Displaying all values on the screen
TextView lblcust = (TextView) findViewById(R.id.cust_label);
TextView lblorder = (TextView) findViewById(R.id.order_label);
TextView lblfreight = (TextView) findViewById(R.id.freight_label);
TextView lblstation1 = (TextView) findViewById(R.id.station1_label);
TextView lblstation2 = (TextView) findViewById(R.id.station2_label);
lblcust.setText(cust);
lblorder.setText(order);
lblfreight.setText(freight);
lblstation1.setText(station1);
lblstation2.setText(station2);
}}
XMLParser.java
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));
}}

Don't use a grid view, it won't help you. It is designed to display a list of items as a grid. You may specify the number of columns, but displaying a table is more of a job for a TableLayout.

content:encoded XMLParser android

Ok, about this specific situation, I have large XML file that should be parsed and shown in Android, and the part of it is here:
.
.
<rss xmlns:content="http://purl.org/rss/1.0/modules/content/:
.
.
<item>
<title>RTS1</title>
<pubDate>Tue, 14, Aug 2012</pubDate>
<content:encoded><![CDATA[6:00 Vesti<br>06:05 Jutarnji program<br>08:15 Jutarnji dnevnik
<br>09:00 Kamiondzije .................. 23:15 Film<br>]]>
</content:encoded>
<item>
In my main, app I have done this:
public class Main extends ListActivity {
// All static variables
static final String URL = "http://tvprofil.net/rss/feed/channel-group-2.xml";
// XML node keys
static final String KEY_ITEM = "item"; // parent node
static final String KEY_NAME = "title";
static final String KEY_DATE = "pubDate";
static final String KEY_DESC = "content:encoded";
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ArrayList<HashMap<String,String>> menuItems = new ArrayList<HashMap<String,String>>();
XMLParser parser = new XMLParser();
String xml = parser.getXmlFromUrl(URL); //get XML
Document doc = parser.getDomElement(xml); // get DOM elem.
NodeList nl = doc.getElementsByTagName(KEY_ITEM);
//loop
for (int i=0; i< nl.getLength(); i++){
HashMap<String, String> map = new HashMap<String, String>();
Element e = (Element) nl.item(i);
//add to map
map.put(KEY_NAME, parser.getValue(e, KEY_NAME));
map.put(KEY_DATE, parser.getValue(e, KEY_DATE));
map.put(KEY_DESC, parser.getValue(e, KEY_DESC));
// hash => list
menuItems.add(map);
}
ListAdapter adapter = new SimpleAdapter(this, menuItems, R.layout.list_item,
new String[]{KEY_NAME, KEY_DESC, KEY_DATE}, new int[]{
R.id.name, R.id.description, R.id.date
});
setListAdapter(adapter);
//singleView
ListView lv = getListView();
lv.setOnItemClickListener(new OnItemClickListener(){
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id){
String name = ((TextView)view.findViewById(R.id.name)).getText().toString();
String date = ((TextView)view.findViewById(R.id.date)).getText().toString();
String description = ((TextView)view.findViewById(R.id.description)).getText().toString();
//intent
Intent in = new Intent(getApplicationContext(), SingleMenuItemActivity.class);
in.putExtra(KEY_NAME, name);
in.putExtra(KEY_DATE, date);
in.putExtra(KEY_DESC, description);
startActivity(in);
}
});
}
}
please, look closely at:
static final String KEY_DESC = "content:encoded";
I've tried with:
static final String KEY_DESC = "encoded";
and even with:
static final String KEY_DESC = "http://purl.org/rss/1.0/modules/content/encoded";
but nothing works.. doesn't show anything nor in Log.w when I set it nor on phone...
I'll even post parser class, I don't want any confusion:
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();
dbf.setCoalescing(true);
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));
}
}

App Not working, Unfortunately, XML has stopped error

I have written this code to parse this xml:
http://hiscentral.cuahsi.org/webservices/hiscentral.asmx/GetSeriesCatalogForBox2
But when I run it... it say "APP Stopped Working" and I can't figure out the reason... Please help!
The code is:
xmlActivity.java
package com.example.xml;
public class XmlActivity extends ListActivity {
static final String URL = "http://hiscentral.cuahsi.org/webservices/hiscentral.asmx/GetSeriesCatalogForBox2";
// XML node keys
static final String KEY_SeriesRecord = "SeriesRecord"; // parent node
static final String KEY_latitude = "latitude";
static final String KEY_longitude = "longitude";
static final String KEY_location = "location";
/** Called when the activity is first created. */
#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_SeriesRecord);
// 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_SeriesRecord, parser.getValue(e, KEY_SeriesRecord));
map.put(KEY_latitude, parser.getValue(e, KEY_latitude));
map.put(KEY_longitude, parser.getValue(e, KEY_longitude));
map.put(KEY_location, parser.getValue(e, KEY_location));
// adding HashList to ArrayList
menuItems.add(map);
}
ListAdapter adapter = new SimpleAdapter(this, menuItems,
R.layout.list_item, new String[] { KEY_latitude, KEY_longitude,
KEY_location }, new int[] { R.id.name, R.id.desciption,
R.id.cost });
setListAdapter(adapter);
// selecting single ListView item
ListView lv = getListView();
lv.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
// getting values from selected ListItem
String name = ((TextView) view.findViewById(R.id.name))
.getText().toString();
String cost = ((TextView) view.findViewById(R.id.cost))
.getText().toString();
String description = ((TextView) view
.findViewById(R.id.desciption)).getText().toString();
// Starting new intent
Intent in = new Intent(getApplicationContext(),
SingleMenuItemActivity.class);
in.putExtra(KEY_latitude, name);
in.putExtra(KEY_longitude, cost);
in.putExtra(KEY_location, description);
startActivity(in);
}
});
}
}
SingleMenuItemActivity.java
package com.example.xml;
public class SingleMenuItemActivity extends Activity {
// XML node keys
static final String KEY_latitude = "latitude";
static final String KEY_longitude = "longitude";
static final String KEY_location = "location ";
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.single_list_item);
// getting intent data
Intent in = getIntent();
// Get XML values from previous intent
String latitude = in.getStringExtra(KEY_latitude);
String longitude = in.getStringExtra(KEY_longitude);
String location = in.getStringExtra(KEY_location);
// Displaying all values on the screen
TextView lblName = (TextView) findViewById(R.id.name_label);
TextView lblCost = (TextView) findViewById(R.id.cost_label);
TextView lblDesc = (TextView) findViewById(R.id.description_label);
lblName.setText(latitude);
lblCost.setText(longitude);
lblDesc.setText(location);
}
}
xmlParser.java
package com.example.xml;
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));
}
}

You cannot do slow operation like HttpRequest in the Activity Thread. You must put them in a separate thread (AsyncTask). This is mentionned by Google but i lost source i'm sorry.
You should try creating an AsyncTask here is how you should try :
public class GetSoigneurInfoTask extends AsyncTask<Document, Integer, Document> //Le même code s'applique pour presque tout sauf onPostExecute()
{
Document doc;
String xml;
String url;
public GetSoigneurInfoTask(String URL)
{
url = URL;
}
protected Document doInBackground(Document...params)
{
xml = XmlFunctions.getXML(url);
doc = XmlFunctions.XMLfromString(xml);
return doc;
}
protected void onPostExecute(Document result)
{
if(result != null)
{
NodeList nodeList = doc.getElementsByTagName("RootTag"); //Crée une liste avec les elements sous soigneur
for (int i = 0; i < nodeList.getLength(); i++)
{
Node node = nodeList.item(i);
if (node.getNodeType() == Node.ELEMENT_NODE)
{
Element element = (Element) node;
NodeList nodelist = element.getElementsByTagName("childTag");
Element element1 = (Element) nodelist.item(0);
NodeList fstNm = element1.getChildNodes();
soignTemp = fstNm.item(0).getNodeValue();
}
}
}
}
So you call your methods in doInBackground() and you do everything you have to do with UI in onPostExecute()!
Hope this helps!

Develop Reference

The Android operating system is a mobile operating system that was developed by Google (GOOGL?) to be primarily used for touchscreen devices, cell phones, and tablets.

Async task inside fragment starts to execute before opening its fragment - android

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