Develop Reference

search filter for Listview [duplicate]

I'm a beginner, I'm creating a job search app which shows job infomation as listview where the data is from WAMP server database. I encounter a problem : Cannot resolve method 'getStringArrayList' , when I'm making a search filter for this Listview. Please see line 11 of SearchFilter.java. Could anyone help? thank you very much!
SearchFilter.java
public class SearchFilter extends ListActivity {
private EditText filterText = null;
ArrayAdapter<String> adapter = null;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
filterText = (EditText) findViewById(R.id.search_box);
filterText.addTextChangedListener(filterTextWatcher);
setListAdapter(new ArrayAdapter<String>(this,
android.R.layout.simple_list_item_1,
getStringArrayList())); ***<<<<< this line !***
}
private TextWatcher filterTextWatcher = new TextWatcher() {
public void afterTextChanged(Editable s) {
}
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
}
public void onTextChanged(CharSequence s, int start, int before,
int count) {
adapter.getFilter().filter(s);
}
};
#Override
protected void onDestroy() {
super.onDestroy();
filterText.removeTextChangedListener(filterTextWatcher);
}
}
MainActivity.java
public class MainActivity extends ListActivity {
private ProgressDialog pDialog;
// URL to get contacts JSON
private static String url = "http://192.168.0.102/get_json_select_all.php";
// JSON Node names
private static final String TAG_INFO = "info";
private static final String TAG_POSTNAME = "PostName";
private static final String TAG_LOCATION = "Location";
private static final String TAG_SALARY = "Salary";
private static final String TAG_RESPONSIBILITY = "Responsibility";
private static final String TAG_COMPANY = "Company";
private static final String TAG_CONTACT = "Contact";
// contacts JSONArray
JSONArray infos = null;
// Hashmap for ListView
ArrayList<HashMap<String, String>> infoList;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
infoList = new ArrayList<HashMap<String, String>>();
final ListView lv = getListView();
// Listview on item click listener
lv.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.PostName))
.getText().toString();
String cost = ((TextView) view.findViewById(R.id.Location))
.getText().toString();
String description = ((TextView) view.findViewById(R.id.Salary))
.getText().toString();
HashMap<String, String> info = new HashMap<String, String>();
info=(HashMap<String, String>)lv.getAdapter().getItem(position);
// Starting single contact activity
Intent in = new Intent(getApplicationContext(),
SingleContactActivity.class);
in.putExtra(TAG_POSTNAME, name);
in.putExtra(TAG_LOCATION, cost);
in.putExtra(TAG_SALARY, description);
in.putExtra(TAG_RESPONSIBILITY, info.get(TAG_RESPONSIBILITY));
in.putExtra(TAG_COMPANY, info.get(TAG_COMPANY));
in.putExtra(TAG_CONTACT, info.get(TAG_CONTACT));
startActivity(in);
}
});
// Calling async task to get json
new GetContacts().execute();
}
/**
* Async task class to get json by making HTTP call
* */
private class GetContacts extends AsyncTask<Void, Void, Void> {
#Override
protected void onPreExecute() {
super.onPreExecute();
// Showing progress dialog
pDialog = new ProgressDialog(MainActivity.this);
pDialog.setMessage("Please wait...");
pDialog.setCancelable(false);
pDialog.show();
}
#Override
protected Void doInBackground(Void... arg0) {
// Creating service handler class instance
ServiceHandler sh = new ServiceHandler();
// Making a request to url and getting response
String jsonStr = sh.makeServiceCall(url, ServiceHandler.GET);
Log.d("Response: ", "> " + jsonStr);
if (jsonStr != null) {
try {
JSONObject jsonObj = new JSONObject(jsonStr);
// Getting JSON Array node
infos = jsonObj.getJSONArray(TAG_INFO);
// looping through All Contacts
for (int i = 0; i < infos.length(); i++) {
JSONObject c = infos.getJSONObject(i);
String id = c.getString(TAG_POSTNAME);
String name = c.getString(TAG_LOCATION);
String email = c.getString(TAG_SALARY);
String address = c.getString(TAG_RESPONSIBILITY);
String gender = c.getString(TAG_COMPANY);
// Phone node is JSON Object
String mobile = c.getString(TAG_CONTACT);
// tmp hashmap for single contact
HashMap<String, String> info = new HashMap<String, String>();
// adding each child node to HashMap key => value
info.put(TAG_POSTNAME, id);
info.put(TAG_LOCATION, name);
info.put(TAG_SALARY, email);
info.put(TAG_RESPONSIBILITY, address);
info.put(TAG_COMPANY, gender);
info.put(TAG_CONTACT, mobile);
// adding contact to contact list
infoList.add(info);
}
} catch (JSONException e) {
e.printStackTrace();
}
} else {
Log.e("ServiceHandler", "Couldn't get any data from the url");
}
return null;
}
#Override
protected void onPostExecute(Void result) {
super.onPostExecute(result);
// Dismiss the progress dialog
if (pDialog.isShowing())
pDialog.dismiss();
/**
* Updating parsed JSON data into ListView
* */
ListAdapter adapter = new SimpleAdapter(
MainActivity.this, infoList,
R.layout.list_item, new String[] { TAG_POSTNAME, TAG_LOCATION,
TAG_SALARY }, new int[] { R.id.PostName,
R.id.Location, R.id.Salary });
setListAdapter(adapter);
}
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu_main, menu);
return (super.onCreateOptionsMenu(menu));
}
}
activity_main.xml
<EditText android:id="#+id/search_box"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:hint="Search Jobs"
android:inputType="text"
android:maxLines="1"/>
<ListView
android:id="#android:id/list"
android:layout_width="fill_parent"
android:layout_height="wrap_content"/>

getStringArrayList is a method on Bundle (such as savedInstanceState). There's no such method in Activity. Hope that helps.
Currently your infoList is an ArrayList>, something that is harder to pass directly to an activity. So find a way to represent it as an ArrayList, or find a more suitable datatype supported by Intent's putExtra-methods. Here below is a suggested solution using an ArrayList.
Passing the data into the activity with the Intent allows you to get it back in your SearchFilter. In the calling activity put something like this:
Intent i = new Intent(this, SearchFilter.class);
i.putStringArrayListExtra("com.yourpackagename.here.keynamehere", aStringArrayList);
In SearchFilter.java, put something like this:
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
filterText = (EditText) findViewById(R.id.search_box);
filterText.addTextChangedListener(filterTextWatcher);
Intent startingIntent = getIntent();
ArrayList<String> arrayList = new ArrayList<String>();
if (startingIntent != null) {
arrayList = startingIntent.getStringArrayList("com.yourpackagename.here.keynamehere");
}
setListAdapter(new ArrayAdapter<String>(this,
android.R.layout.simple_list_item_1,
arrayList));
}

how to display details of single item of list in another activity from url (json data)?

I have written a program to display the list of json data from a url which has an image and 5 textviews which is displaying perfectly.
Url : https://itunes.apple.com/search?term=jack+johnson&limit=50.
When i click on an item from the list i want to display the details of that item in another activity based on the track-id
Url : https://itunes.apple.com/lookup?id=659234741
So when i click on the item the details are getting displayed in the textview , but by default it is displaying the details of id = 659234741 for some items or in short the details does not match.
Need some help to figure out the problem
My Code :
MainActivity.java
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
resultsList = new ArrayList<HashMap<String, String>>();
lv = getListView();
// Calling async task to get json
new GetTunesDetails().execute();
}
/**
* Async task class to get json by making HTTP call
* */
private class GetTunesDetails extends AsyncTask<Void, Void, Void> {
#Override
protected void onPreExecute() {
super.onPreExecute();
// Showing progress dialog
pDialog = new ProgressDialog(MainActivity.this);
pDialog.setMessage("Please wait...");
pDialog.setCancelable(false);
pDialog.show();
}
#Override
protected Void doInBackground(Void... params) {
// Creating service handler class instance
ServiceHandler sh = new ServiceHandler();
// Making a request to url and getting response
String jsonStr = sh.makeServiceCall(url, ServiceHandler.GET);
Log.d("Response: ", "> " + jsonStr);
if (jsonStr != null) {
try {
JSONObject jsonObj = new JSONObject(jsonStr);
// Getting JSON Array node
tunes = jsonObj.getJSONArray(TAG_RESULT);
// looping through All Products
for (int i = 0; i < tunes.length(); i++) {
JSONObject c = tunes.getJSONObject(i);
artworkImage = c.getString("artworkUrl100");
wrapperType = c.getString("wrapperType");
artistName = c.getString("artistName");
collectionName = c.getString("collectionName");
trackName = c.getString("trackName");
collectionPrice = c.getString("collectionPrice");
trackId = c.getString("trackId");
// tmp hashmap for single contact
HashMap<String, String> tunesMap = new HashMap<String,
String>();
// adding each child node to HashMap key => value
// contact.put(TAG_ID, firstname);
tunesMap.put(TAG_ARTWORK_IMAGE, artworkImage);
tunesMap.put(TAG_WRAPPER_TYPE, wrapperType);
tunesMap.put(TAG_ARTIST_NAME, artistName);
tunesMap.put(TAG_COLLECTION_NAME, collectionName);
tunesMap.put(TAG_TRACK_NAME, trackName);
tunesMap.put(TAG_COLLECTION_PRICE, collectionPrice);
tunesMap.put(TAG_TRACK_ID, trackId);
// adding contact to contact list
resultsList.add(tunesMap);
}
} catch (JSONException e) {
e.printStackTrace();
}
} else {
Log.e("ServiceHandler", "Couldn't get any data from the url");
}
return null;
}
#Override
protected void onPostExecute(Void result) {
super.onPostExecute(result);
if (pDialog.isShowing())
pDialog.dismiss();
// Pass the results into ListViewAdapter.java
adapter = new ListViewAdapter(MainActivity.this, resultsList);
// Set the adapter to the ListView
lv.setAdapter(adapter);
}
}
ListViewAdapter.java
public class ListViewAdapter extends BaseAdapter {
// Declare Variables
Context context;
LayoutInflater inflater;
ArrayList<HashMap<String, String>> data;
ImageLoader imageLoader;
HashMap<String, String> resultp = new HashMap<String, String>();
int position;
TextView wrapperType, artistName, collectionName, trackName,
collectionPrice;
ImageView artworkImage;
public ListViewAdapter(Context context, ArrayList<HashMap<String, String>>
arraylist) {
this.context = context;
data = arraylist;
imageLoader = new ImageLoader(context);
}
#Override
public int getCount() {
return data.size();
}
#Override
public Object getItem(int position) {
return null;
}
#Override
public long getItemId(int position) {
return 0;
}
public View getView(final int position, View convertView, ViewGroup parent) {
// Declare Variables
// this.position = position;
inflater = (LayoutInflater)
context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View itemView = inflater.inflate(R.layout.custom_row, parent, false);
// Get the position
resultp = data.get(position);
// Locate the TextViews in listview_item.xml
wrapperType = (TextView) itemView.findViewById(R.id.wrapperType);
artistName = (TextView) itemView.findViewById(R.id.artistName);
collectionName = (TextView) itemView.findViewById(R.id.collectionName);
trackName = (TextView) itemView.findViewById(R.id.trackName);
collectionPrice = (TextView)
itemView.findViewById(R.id.collectionPrice);
// Locate the ImageView in listview_item.xml
artworkImage = (ImageView) itemView.findViewById(R.id.artworkImage);
// Capture position and set results to the TextViews
wrapperType.setText(resultp.get(MainActivity.TAG_WRAPPER_TYPE));
artistName.setText(resultp.get(MainActivity.TAG_ARTIST_NAME));
collectionName.setText(resultp.get(MainActivity.TAG_COLLECTION_NAME));
trackName.setText(resultp.get(MainActivity.TAG_TRACK_NAME));
collectionPrice.setText(resultp.get(MainActivity.TAG_COLLECTION_PRICE));
// Capture position and set results to the ImageView
// Passes flag images URL into ImageLoader.class
imageLoader.DisplayImage(resultp.get(MainActivity.TAG_ARTWORK_IMAGE),
artworkImage);
// Capture ListView item click
itemView.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) { // TODO Auto-generated method
Toast.makeText(context, "Clicked at position " + position,
Toast.LENGTH_LONG).show();
Intent intent = new Intent(context, SingleTrack.class);
intent.putExtra("track_image",
resultp.get(MainActivity.TAG_ARTWORK_IMAGE));
intent.putExtra("wrapper_type",
resultp.get(MainActivity.TAG_WRAPPER_TYPE));
intent.putExtra("artistName",
resultp.get(MainActivity.TAG_ARTIST_NAME));
intent.putExtra("collectionName",
resultp.get(MainActivity.TAG_COLLECTION_NAME));
intent.putExtra("trackName",
resultp.get(MainActivity.TAG_TRACK_NAME));
intent.putExtra("collectionPrice",
resultp.get(MainActivity.TAG_COLLECTION_PRICE));
intent.putExtra("trackId",
resultp.get(MainActivity.TAG_TRACK_ID));
context.startActivity(intent);
}
});
return itemView;
}
SingleTrack.java : This is the class where i displaying the details on single item click
public class SingleTrack extends Activity {
// URL to get contacts JSON
private static String url = "";
// JSON Node names
static final String TAG_RESULT = "results";
static final String TAG_ARTWORK_IMAGE = "artworkUrl100";
static final String TAG_WRAPPER_TYPE = "wrapperType";
static final String TAG_ARTIST_NAME = "artistName";
static final String TAG_COLLECTION_NAME = "collectionName";
static final String TAG_TRACK_NAME = "trackName";
static final String TAG_COLLECTION_PRICE = "collectionPrice";
static final String TAG_TRACK_ID = "trackId";
// contacts JSONArray
JSONArray tracks = null;
// Hashmap for ListView
ArrayList<HashMap<String, String>> singleTrackDetails;
ProgressDialog pDialog;
String passedData1, passedData2, passedData3, passedData4, passedData5,
passedData6, passedData7;
TextView wrapperTypeText, artistNameText, collectionNameText, trackNameText,
collectionPriceText;
ImageView trackImage;
String artworkImage, wrapperType, artistName, collectionName, trackName,
collectionPrice, trackId;
#Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.single_track);
wrapperTypeText = (TextView) findViewById(R.id.wrapperType1);
artistNameText = (TextView) findViewById(R.id.artistName1);
collectionNameText = (TextView) findViewById(R.id.collectionName1);
trackNameText = (TextView) findViewById(R.id.trackName1);
collectionPriceText = (TextView) findViewById(R.id.collectionPrice);
trackImage = (ImageView) findViewById(R.id.artworkImage1);
passedData1 = getIntent().getStringExtra("track_image");
passedData2 = getIntent().getStringExtra("wrapper_type");
passedData3 = getIntent().getStringExtra("artistName");
passedData4 = getIntent().getStringExtra("collectionName");
passedData5 = getIntent().getStringExtra("trackName");
passedData6 = getIntent().getStringExtra("collectionPrice");
passedData7 = getIntent().getStringExtra("trackId");
singleTrackDetails = new ArrayList<HashMap<String, String>>();
// url
url = "https://itunes.apple.com/lookup?id=" + passedData7;
// Calling async task to get json
new GetSingleTrackDetails().execute();
}
class GetSingleTrackDetails extends AsyncTask<String, Void, String> {
private JSONObject jsonObj;
#Override
protected void onPreExecute() {
super.onPreExecute();
// Showing progress dialog
pDialog = new ProgressDialog(SingleTrack.this);
pDialog.setMessage("Loading Track Details...");
pDialog.setCancelable(false);
pDialog.show();
}
#Override
protected String doInBackground(String... params) {
// Creating service handler class instance
ServiceHandler sh = new ServiceHandler();
// Making a request to url and getting response
String jsonStr = sh.makeServiceCall(url, ServiceHandler.GET);
Log.d("Response: ", "> " + jsonStr);
if (jsonStr != null) {
try {
JSONObject jsonObj = new JSONObject(jsonStr);
// Getting JSON Array node
tracks = jsonObj.getJSONArray(TAG_RESULT);
// looping through All Products
for (int i = 0; i < tracks.length(); i++) {
JSONObject c = tracks.getJSONObject(i);
artworkImage = c.getString("artworkUrl100");
wrapperType = c.getString("wrapperType");
artistName = c.getString("artistName");
collectionName = c.getString("collectionName");
trackName = c.getString("trackName");
collectionPrice = c.getString("collectionPrice");
trackId = c.getString("trackId");
// tmp hashmap for single contact
HashMap<String, String> tunesMap = new HashMap<String,
String>();
// adding each child node to HashMap key => value
// contact.put(TAG_ID, firstname);
tunesMap.put(TAG_ARTWORK_IMAGE, artworkImage);
tunesMap.put(TAG_WRAPPER_TYPE, wrapperType);
tunesMap.put(TAG_ARTIST_NAME, artistName);
tunesMap.put(TAG_COLLECTION_NAME, collectionName);
tunesMap.put(TAG_TRACK_NAME, trackName);
tunesMap.put(TAG_COLLECTION_PRICE, collectionPrice);
tunesMap.put(TAG_TRACK_ID, trackId);
// adding contact to contact list
singleTrackDetails.add(tunesMap);
}
} catch (JSONException e) {
e.printStackTrace();
}
} else {
Log.e("ServiceHandler", "Couldn't get any data from the url");
}
return null;
}
#Override
protected void onPostExecute(String result) {
super.onPostExecute(result);
if (pDialog != null) {
pDialog.dismiss();
pDialog = null;
}
wrapperTypeText.setText(wrapperType);
artistNameText.setText(artistName);
collectionNameText.setText(collectionName);
trackNameText.setText(trackName);
collectionPriceText.setText(collectionPrice);
}
}
Thank you

The problem is that you are initializing the resultp each element in your getView method, so therefore the last id/element of the listview adapter's data will be considered as the resultp.
Im sure that the id 659234741 is the last element, which will always be the id for each onclick that would happen.
A solution for this is to create a final resultp within your getView method instead of having just one global resultp.
final HashMap<String, String> resultp = data.get(position);

setOnScrollListener(...) in AbsListView not applicable for (new Runnable(){}) when trying to automatically load new items into ListView after scroll

I want to display first 10 item continue to upload to 10 item when they reach the end of the list. The error: "The method setOnScrollListener(AbsListView.OnScrollListener) in the type AbsListView is not applicable for the arguments (new Runnable(){})" in line list=getListView().setOnScrollListener(this);. How to fix?
public class CustomizedListView extends ListActivity implements OnScrollListener{
private ProgressDialog pDialog;
// All static variables
static final String URL = "https://api.api2cart.com/v1.0/product.list.xml?api_key=6aed775211e8c3d556db063d12125d2d&store_key=ed58a22dfecb405a50ea3ea56979360d&start=0&count=19&params=id,u_model,name,price,images,short_description";
// XML node keys
static final String KEY_SONG = "product"; // parent node
static final String KEY_ID = "id";
static final String KEY_TITLE = "u_model";
static final String KEY_ARTIST = "name";
static final String KEY_DURATION = "price";
static final String KEY_THUMB_URL = "http_path";
static final String KEY_SHORT_DESCRIPTION = "short_description";
ListView list;
LazyAdapter adapter;
ArrayList<HashMap<String, String>> songsList;
//#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
songsList = new ArrayList<HashMap<String, String>>();
new LoadCatalog().execute();
}
public void onScroll(AbsListView view, int firstVisible, int visibleCount, int totalCount) {
boolean loadMore = /* maybe add a padding */
firstVisible + visibleCount >= totalCount;
if(loadMore) {
adapter.count += visibleCount; // or any other amount
adapter.notifyDataSetChanged();
}
}
public void onScrollStateChanged(AbsListView v, int s) { }
class LoadCatalog extends AsyncTask<String, String, String> {
#Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(CustomizedListView.this);
pDialog.setMessage("Загрузка каталога ...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(false);
pDialog.show();
}
protected String doInBackground(String... args) {
XMLParser parser = new XMLParser();
String xml = parser.getXmlFromUrl(URL); // getting XML from URL
Document doc = parser.getDomElement(xml); // getting DOM element
NodeList nl = doc.getElementsByTagName(KEY_SONG);
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_TITLE, parser.getValue(e, KEY_TITLE));
map.put(KEY_ARTIST, parser.getValue(e, KEY_ARTIST));
map.put(KEY_DURATION, parser.getValue(e, KEY_DURATION));
map.put(KEY_SHORT_DESCRIPTION, parser.getValue(e, KEY_SHORT_DESCRIPTION));
map.put(KEY_THUMB_URL, parser.getValue(e, KEY_THUMB_URL));
// adding HashList to ArrayList
songsList.add(map);
}
return null;
}
public void onScroll(AbsListView view, int firstVisible, int visibleCount, int totalCount) {
boolean loadMore = /* maybe add a padding */
firstVisible + visibleCount >= totalCount;
if(loadMore) {
adapter.count += visibleCount; // or any other amount
adapter.notifyDataSetChanged();
}
}
public void onScrollStateChanged(AbsListView v, int s) { }
protected void onPostExecute(String file_url) {
// dismiss the dialog after getting all products
pDialog.dismiss();
// updating UI from Background Thread
runOnUiThread(new Runnable() {
public void run() {
list=getListView().setOnScrollListener(this);
adapter=new LazyAdapter(CustomizedListView.this, songsList);
list.setAdapter(adapter);
}
});
} }}

Change "this" for CustomizedListView.this, with "this" you are actually refering to the Runnable Object you created inside the parameters of runOnUiThread method, you should point to the class that implements the Scroll Listener by using "CustomizedListView.this" (in case CustomizedListView implements the Scroll Listener interface)
Hope this Helps.
Regards

#Override
public void onStart() {
super.onStart();
getListView().setOnScrollListener(this);
getListView().setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);
}

add selected product to cart in android

I have developed one android list view app using xml parsing.this is done for my first page.
After i have to click any product from list means am getting the detailed product description in displayed on next activity.it is also done.
Here i have to implement one part.
the detailed order page have one button add to cart.here i have to click this button means the selected product is added on my cart.how can i implement this.please help me.
This is my first activity(list view using xml parsing):
public class CustomizedListView extends Activity {
// All static variables
static final String URL = "http://192.168.1.168/tbc/watches.xml";
// XML node keys
static final String KEY_SONG = "Product"; // parent node
static final String KEY_ID = "productid";
static final String KEY_TITLE = "Name";
static final String KEY_ARTIST = "ProductURL";
static final String KEY_DURATION = "Price";
static final String KEY_THUMB_URL = "Image";
ListView list;
LazyAdapter adapter;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
ArrayList<HashMap<String, String>> songsList = new ArrayList<HashMap<String, String>>();
XMLParser parser = new XMLParser();
String xml = parser.getXmlFromUrl(URL); // getting XML from URL
Document doc = parser.getDomElement(xml); // getting DOM element
NodeList nl = doc.getElementsByTagName(KEY_SONG);
// looping through all song nodes <song>
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_TITLE, parser.getValue(e, KEY_TITLE));
map.put(KEY_ARTIST, parser.getValue(e, KEY_ARTIST));
map.put(KEY_DURATION, parser.getValue(e, KEY_DURATION));
map.put(KEY_THUMB_URL, parser.getValue(e, KEY_THUMB_URL));
// adding HashList to ArrayList
songsList.add(map);
}
list=(ListView)findViewById(R.id.list);
// Getting adapter by passing xml data ArrayList
adapter=new LazyAdapter(this, songsList);
list.setAdapter(adapter);
// Click event for single list row
list.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
String title = ((TextView) view.findViewById(R.id.title)).getText().toString();
String duration = ((TextView) view.findViewById(R.id.duration)).getText().toString();
String artist = ((TextView) view.findViewById(R.id.artist)).getText().toString();
String thumb_image = ((ImageView) view.findViewById(R.id.list_image)).getImageMatrix().toString();
// Starting new intent
Intent in = new Intent(getApplicationContext(), SingleMenuItemActivity.class);
in.putExtra(KEY_TITLE, title);
in.putExtra(KEY_DURATION, duration);
in.putExtra(KEY_ARTIST, artist);
in.putExtra(KEY_THUMB_URL, thumb_image);
startActivity(in);
}
});
}
}
This is detailed description activity:
public class SingleMenuItemActivity extends Activity {
Button cart;
// XML node keys
static final String KEY_TITLE = "Name";
static final String KEY_DURATION = "Price";
static final String KEY_ARTIST = "ProductURL";
static final String KEY_THUMB_URL = "Image";
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.single_list_item);
int productIndex = getIntent().getExtras().getInt(CustomizedListView.URL);
//final CustomizedListView selectedProduct = songsList.getInt(productIndex);
cart = (Button)findViewById(R.id.cart);
cart.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
//cart.add(selectedProduct);
finish();
}
});
// getting intent data
Intent in = getIntent();
// Get XML values from previous intent
String title = in.getStringExtra(KEY_TITLE);
String duration = in.getStringExtra(KEY_DURATION);
String artist = in.getStringExtra(KEY_ARTIST);
final String thumb_image = in.getStringExtra(KEY_THUMB_URL);
// 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);
ImageView imgv = (ImageView) findViewById(R.id.image_label);
ImageLoader imageLoader = new ImageLoader(getApplicationContext());
lblName.setText(title);
lblCost.setText(duration);
lblDesc.setText(artist);
imageLoader.DisplayImage(thumb_image, imgv);
}
}
I have to add add to cart button in these 2nd activity.what condition i have to put here for selected product item is add to cart .please give me solution for some useful coding wise.please help me.

android listview loadmore button with xml parsing

Hi i have to developed listview with load more button using xml parsing in android application.
Here i have faced some problem.
my xml feed is empty means how can hide the load more button on last page.
i have used below code here.
public class CustomizedListView extends Activity {
// All static variables
private String URL = "http://dev.mmm.com/xctesting/xcart444pro/retrieve.php?page=1";
// XML node keys
static final String KEY_SONG = "Order";
static final String KEY_TITLE = "orderid";
static final String KEY_DATE = "date";
static final String KEY_ARTIST = "payment_method";
int current_page = 1;
ListView lv;
LazyAdapter adapter;
ProgressDialog pDialog;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
lv = (ListView) findViewById(R.id.list);
ArrayList<HashMap<String, String>> songsList = new ArrayList<HashMap<String, String>>();
XMLParser parser = new XMLParser();
String xml = parser.getXmlFromUrl(URL); // getting XML from URL
Document doc = parser.getDomElement(xml); // getting DOM element
NodeList nl = doc.getElementsByTagName(KEY_SONG);
// looping through all song nodes <song>
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_TITLE, parser.getValue(e, KEY_TITLE));
map.put(KEY_ARTIST, parser.getValue(e, KEY_ARTIST));
songsList.add(map);
}
Button btnLoadMore = new Button(this);
btnLoadMore.setText("Load More");
btnLoadMore.setBackgroundResource(R.drawable.lgnbttn);
// Adding Load More button to lisview at bottom
lv.addFooterView(btnLoadMore);
// Getting adapter
adapter = new LazyAdapter(this, songsList);
lv.setAdapter(adapter);
btnLoadMore.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View arg0) {
// Starting a new async task
new loadMoreListView().execute();
}
});
}
private class loadMoreListView extends AsyncTask<Void, Void, Void> {
#Override
protected void onPreExecute() {
// Showing progress dialog before sending http request
pDialog = new ProgressDialog(
CustomizedListView.this);
pDialog.setMessage("Please wait..");
//pDialog.setIndeterminateDrawable(getResources().getDrawable(R.drawable.my_progress_indeterminate));
pDialog.setIndeterminate(true);
pDialog.setCancelable(false);
pDialog.show();
pDialog.setContentView(R.layout.custom_dialog);
}
protected Void doInBackground(Void... unused) {
current_page += 1;
// Next page request
URL = "http://dev.mmm.com/xctesting/xcart444pro/retrieve.php?page=" + current_page;
ArrayList<HashMap<String, String>> songsList = new ArrayList<HashMap<String, String>>();
XMLParser parser = new XMLParser();
String xml = parser.getXmlFromUrl(URL); // getting XML from URL
Document doc = parser.getDomElement(xml); // getting DOM element
NodeList nl = doc.getElementsByTagName(KEY_SONG);
NodeList nl = doc.getElementsByTagName(KEY_SONG);
if (nl.getLength() == 0)
{
btnLoadMore.setVisibility(View.GONE);
pDialog.dismiss();
}
else
// 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_TITLE, parser.getValue(e, KEY_TITLE));
map.put(KEY_ARTIST, parser.getValue(e, KEY_ARTIST));
songsList.add(map);
}
// get listview current position - used to maintain scroll position
int currentPosition = lv.getFirstVisiblePosition();
// Appending new data to menuItems ArrayList
adapter = new LazyAdapter(
CustomizedListView.this,
songsList);
lv.setAdapter(adapter);
lv.setSelectionFromTop(currentPosition + 1, 0);
}
});
return (null);
}
protected void onPostExecute(Void unused) {
// closing progress dialog
pDialog.dismiss();
}
}
}
EDIT:
Here i have to run the app means the listview is displayed on perpage 4 items.my last page having 1 item.please refer this screenshot:lastpage
In last page i have to click the load more button means have to go next activity and successfully hide the button on empty page..please refer this screenshot:empty page-so hide the button
i have to check the condition for empty page:
if (nl.getLength() == 0)
{
btnLoadMore.setVisibility(View.GONE);
pDialog.dismiss();
}
How can i write the conditon fot last page?????pleas ehelp me
Here i wish to need the o/p is hide the button on last page.
Please help me.how can i check the condition.give me some code programmatically.

First off, why are you using runOnUiThread inside an AsyncTaks? This should not be necessary. The code that has to run in the background, in the doInBackground method is enough.
Furthermore, you could use the third parameter type of the AsyncTask to return a result from te doInBackground to the onPostExecute. Then depending on the result, you can change the visibility of the button there.
To do this, the reference to the Button (btnLoadMore in your case) should be a instance variable, so it should be defined in the class, not in the onCreate method. Otherwise it will not be accessible from outside this method.
I asume the nodelist will be empty when the feed is empty? Then it will look something like this:
public class CustomizedListView extends Activity {
private Button btnLoadMore;
public void onCreate(){
btnLoadMore = new Button(this);
<do stuff>
btnLoadMore.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View arg0) {
// Starting a new async task
new LoadMoreListView().execute();
}
});
new LoadMoreListView().execute();// execute the AsyncTask once in the onCreate, so you don't have to duplicate the code here to load the listview.
}
private class LoadMoreListView extends AsyncTask<Void, Void, Boolean> {
#Override
protected void onPreExecute() {
< Show dialog>;
}
#Override
protected Void doInBackground(Void... unused) {
Boolean listIsEmpty;
< Page request>;
< Retrieve element list>;
< If element list size == 0, listIsEmpty = true; return listIsEmpty>;
< Process elements, fill list etc.>;
< End of doInBackground, listIsEmpty = false; return listIsEmpty>;
}
#Override
protected void onPostExecute(Boolean listIsEmpty) {
< If listIsEmpty == true -> btnLoadMore.setVisibility(View.GONE);>
< Close dialog>
}
}
}
}

I achieved load more using this way I dont use footer view for it
public boolean mHasLoadMore = false;
class MyAdapter extends ArrayAdapter implements OnItemClickListener{
public MyAdapter(Context context, int textViewResourceId) {
super(context, textViewResourceId);
// TODO Auto-generated constructor stub
}
public int getTotal(){
return super.getCount();
}
#Override
public int getCount() {
if(super.getCount()>0)
return super.getCount()+1;
else
return 0;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
if( getTotal() == (position+1) && mHasLoadMore ){
TextView loadMoreView = new TextView(getContext());
loadMoreView.setText("Load More");
return loadMoreView;
}
else {
View theView = new View(getContext());
// inflate & add what you need for item view here you can modify it to reuse convertView also
return theView;
}
}
#Override
public void onItemClick(AdapterView<?> arg0, View arg1, int position,
long id) {
if( getTotal() == (position+1) && mHasLoadMore ){
// load more button clicked do handling for load more launch async
//task to do load more after that if found 0 result change mHasLoadMore to false
//& call notifydatadetchanged
}
else
{
// handle item click here
}
}
}
Use such adapter for your listview & set value of mHasLoadMore first time while loading data & call notifydatasetchanged