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Data not displayed in Listview in Android

I am trying to get google places data from google api and display in listview. I was succeeded in getting data and and setting to adapter, but not able to display in listview.
MainActivity. java
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
lv=(ListView)findViewById(R.id.listView);
StringBuilder sbValue = new StringBuilder(sbMethod());
PlacesTask placesTask = new PlacesTask();
placesTask.execute(sbValue.toString());
MyAdapter adapter=new MyAdapter(MainActivity.this,R.layout.my_adapter_item,arr);
lv.setAdapter(adapter);
}
public StringBuilder sbMethod() {
//use your current location here
double mLatitude =-33.8670522;
double mLongitude =151.1957362;
StringBuilder sb = new StringBuilder("https://maps.googleapis.com/maps/api/place/nearbysearch/json?");
sb.append("location=" + mLatitude + "," + mLongitude);
sb.append("&radius=5000");
sb.append("&types=" + "restaurant");
sb.append("&sensor=true");
sb.append("&key=AIzaSyC2SaN5I5u2eWw3zr4OZoLwD0qvCU-_uUw");
Log.d("Map", "api: " + sb.toString());
return sb;
}
private class PlacesTask extends AsyncTask<String, Integer, String> {
String data = null;
// Invoked by execute() method of this object
#Override
protected String doInBackground(String... url) {
try {
data = downloadUrl(url[0]);
} catch (Exception e) {
Log.d("Background Task", e.toString());
}
return data;
}
// Executed after the complete execution of doInBackground() method
#Override
protected void onPostExecute(String result) {
ParserTask parserTask = new ParserTask();
// Start parsing the Google places in JSON format
// Invokes the "doInBackground()" method of the class ParserTask
parserTask.execute(result);
}
}
private String downloadUrl(String strUrl) throws IOException {
String data = "";
InputStream iStream = null;
HttpURLConnection urlConnection = null;
try {
URL url = new URL(strUrl);
// Creating an http connection to communicate with url
urlConnection = (HttpURLConnection) url.openConnection();
// Connecting to url
urlConnection.connect();
// Reading data from url
iStream = urlConnection.getInputStream();
BufferedReader br = new BufferedReader(new InputStreamReader(iStream));
StringBuffer sb = new StringBuffer();
String line = "";
while ((line = br.readLine()) != null) {
sb.append(line);
}
data = sb.toString();
br.close();
} catch (Exception e) {
Log.d("Exception downloading", e.toString());
} finally {
iStream.close();
urlConnection.disconnect();
}
return data;
}
private class ParserTask extends AsyncTask<String, Integer, List<HashMap<String, String>>> {
JSONObject jObject;
// Invoked by execute() method of this object
#Override
protected List<HashMap<String, String>> doInBackground(String... jsonData) {
List<HashMap<String, String>> places = null;
Place_JSON placeJson = new Place_JSON();
try {
jObject = new JSONObject(jsonData[0]);
places = placeJson.parse(jObject);
} catch (Exception e) {
Log.d("Exception", e.toString());
}
return places;
}
// Executed after the complete execution of doInBackground() method
#Override
protected void onPostExecute(List<HashMap<String, String>> list) {
for (int i = 0; i < list.size(); i++) {
HashMap<String, String> hmPlace = list.get(i);
double lat = Double.parseDouble(hmPlace.get("lat"));
double lng = Double.parseDouble(hmPlace.get("lng"));
}
}
}
public class Place_JSON {
/**
* Receives a JSONObject and returns a list
*/
public List<HashMap<String, String>> parse(JSONObject jObject) {
JSONArray jPlaces = null;
try {
/** Retrieves all the elements in the 'places' array */
jPlaces = jObject.getJSONArray("results");
} catch (JSONException e) {
e.printStackTrace();
}
/** Invoking getPlaces with the array of json object
* where each json object represent a place
*/
return getPlaces(jPlaces);
}
private List<HashMap<String, String>> getPlaces(JSONArray jPlaces) {
int placesCount = jPlaces.length();
List<HashMap<String, String>> placesList = new ArrayList<HashMap<String, String>>();
HashMap<String, String> place = null;
/** Taking each place, parses and adds to list object */
for (int i = 0; i < placesCount; i++) {
try {
/** Call getPlace with place JSON object to parse the place */
place = getPlace((JSONObject) jPlaces.get(i));
placesList.add(place);
} catch (JSONException e) {
e.printStackTrace();
}
}
return placesList;
}
/**
* Parsing the Place JSON object
*/
private HashMap<String, String> getPlace(JSONObject jPlace) {
HashMap<String, String> place = new HashMap<String, String>();
String placeName = "-NA-";
String vicinity = "-NA-";
String latitude = "";
String longitude = "";
String reference = "";
try {
// Extracting Place name, if available
if (!jPlace.isNull("name")) {
placeName = jPlace.getString("name");
}
// Extracting Place Vicinity, if available
if (!jPlace.isNull("vicinity")) {
vicinity = jPlace.getString("vicinity");
}
latitude = jPlace.getJSONObject("geometry").getJSONObject("location").getString("lat");
longitude = jPlace.getJSONObject("geometry").getJSONObject("location").getString("lng");
reference = jPlace.getString("reference");
place.put("place_name", placeName);
place.put("vicinity", vicinity);
place.put("lat", latitude);
place.put("lng", longitude);
place.put("reference", reference);
map1=new HashMap<String, String>();
map1.put("Name",placeName);
map1.put("Vicinity",vicinity);
arr.add(map1);
Log.w("MainActivity",placeName+";"+vicinity);
} catch (JSONException e) {
e.printStackTrace();
}
return place;
}
}
Here i am getting data from HashMap<String, String> getPlace(JSONObject jPlace) and setting to adapter.
This adapter i am setting to listview in Oncreate.
adapter class
public class MyAdapter extends BaseAdapter {
ArrayList<HashMap<String, String>> names;
int data;
Context ctxt;
LayoutInflater inflater;
public MyAdapter (Context c, int nes, ArrayList<HashMap<String, String>> enj){
this.ctxt = c;
this.data = nes;
this.names = enj;
}
#Override
public int getCount() {
// TODO Auto-generated method stub
return names.size();
}
#Override
public Object getItem(int arg0) {
// TODO Auto-generated method stub
return names.get(arg0);
}
#Override
public long getItemId(int arg0) {
// TODO Auto-generated method stub
return arg0;
}
#Override
public View getView(int position, View convertView, ViewGroup viewGroup) {
// TODO Create the cell (View) and populate it with an element of the array
ViewHolder holder = new ViewHolder();
if (convertView == null) {
convertView = LayoutInflater.from(ctxt).inflate(data, viewGroup);
holder.nam = (TextView) convertView . findViewById (R.id.name);
holder.vic = (TextView) convertView . findViewById (R.id.vicinity);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView . getTag ();
}
holder.nam.setText(names.get(position).get("Name"));
holder.vic.setText(names.get(position).get("Vicinity"));
return convertView;
}
class ViewHolder {
TextView nam,vic;
}
}
Here i am not able to display the data in listview. Please help me in this.

Once the "arr" has changed we need to notify adapter that dataset has changed. In onPostExecute of ParserTask , add following line
adapter.notifyDataSetChanged();

Try to use :
instead of this
#Override
public Object getItem(int arg0) {
// TODO Auto-generated method stub
return names.get(arg0);
}
use
#Override
public Object getItem(int arg0) {
// TODO Auto-generated method stub
return arg0;
}

extract data from PHP json to use in android

I'm using this code to fetch some data from PHP file and extract some data into my android application.
This code extract name, price and availability for each product and put each one in an String.
Now I need to have array of the product in java which that is included name,price and availability for each product and name them product1 product2 product3 so I'll be able to write rest of my code based on that.
How can I do that ?
public class MainActivity extends Activity {
private String jsonResult;
private String url = "xxxx/get_all_products.php";
private ListView listView;
private static final String TAG_PRODUCTS = "products";
private static final String TAG_PID = "pid";
private static final String TAG_NAME = "name";
private static final String TAG_PRICE = "price";
private static final String TAG_FOUND = "found";
private static final String TAG_DESCRIPTION = "description";
ArrayList<HashMap<String, String>> productList;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
listView = (ListView) findViewById(R.id.listView1);
productList = new ArrayList<HashMap<String, String>>();
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
String selval = ((TextView) view.findViewById(R.id.name)).getText().toString();
String selval1 = ((TextView) view.findViewById(R.id.price)).getText().toString();
String selval2 = ((TextView) view.findViewById(R.id.found)).getText().toString();
// Also I've found a solution on SO that a guy solved this problem doing soemthing like this :
// TextView txt = (TextView) parent.getChildAt(position - listview.firstVisiblePosition()).findViewById(R.id.sometextview);
// String keyword = txt.getText().toString();
Intent intnt = new Intent(getApplicationContext(), SingleListItem.class);
intnt.putExtra("selval", selval);
intnt.putExtra("selval1", selval1);
intnt.putExtra("selval2", selval2);
startActivity(intnt);
}
});
accessWebService();
}
// Async Task to access the web
private class JsonReadTask extends AsyncTask<String, Void, String> {
#Override
protected String doInBackground(String... params) {
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost(params[0]);
try {
HttpResponse response = httpclient.execute(httppost);
jsonResult = inputStreamToString(
response.getEntity().getContent()).toString();
}
catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
private StringBuilder inputStreamToString(InputStream is) {
String rLine = "";
StringBuilder answer = new StringBuilder();
BufferedReader rd = new BufferedReader(new InputStreamReader(is));
try {
while ((rLine = rd.readLine()) != null) {
answer.append(rLine);
}
}
catch (IOException e) {
// e.printStackTrace();
Toast.makeText(getApplicationContext(),
"Error..." + e.toString(), Toast.LENGTH_LONG).show();
}
return answer;
}
#Override
protected void onPostExecute(String result) {
ListDrwaer();
}
}// end async task
public void accessWebService() {
JsonReadTask task = new JsonReadTask();
// passes values for the urls string array
task.execute(new String[]{url});
}
// build hash set for list view
public void ListDrwaer() {
List<Map<String, String>> productList = new ArrayList<Map<String, String>>();
try {
JSONObject jsonResponse = new JSONObject(jsonResult);
JSONArray jsonMainNode = jsonResponse.optJSONArray("products");
for (int i = 0; i < jsonMainNode.length(); i++) {
JSONObject jsonChildNode = jsonMainNode.getJSONObject(i);
String name = jsonChildNode.optString("name");
String price = jsonChildNode.optString("price");
String found = jsonChildNode.optString("found");
// String outPut = name + "-" + number;
// String outPut = name + "-" + price + "-" + found;
// productList.add(createProduct("products", outPut));
HashMap<String, String> product = new HashMap<String, String>();
product.put(TAG_NAME, name);
product.put(TAG_FOUND, found);
product.put(TAG_PRICE, price);
productList.add(product);
}
} catch (JSONException e) {
Toast.makeText(getApplicationContext(), "Error" + e.toString(),
Toast.LENGTH_SHORT).show();
}
SimpleAdapter simpleAdapter = new SimpleAdapter(this, productList,
R.layout.list_item, new String[] { TAG_NAME, TAG_PRICE,
TAG_FOUND }, new int[] { R.id.name,
R.id.price, R.id.found });
listView.setAdapter(simpleAdapter);
}
}

its very simple, by using this code outside of the for loop
JSONObject pro1 = jsonMainNode.getJSONObject(0);

Matching json parsed value with user entered value

I parsed json to adapt for my autocompleteTextView. I tried to match the value parsed by my json object with the value entered by user.
But some where i am failing. please help me in matching these values.
i have to match the string(acity) that is entered by user with my parsed json value stored in responseList.
This is how i am trying.
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_search);
new HttpGetTask().execute();
Button shwBtn = (Button) findViewById(R.id.showBtn);
shwBtn.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
AutoCompleteTextView city1 = (AutoCompleteTextView) findViewById(R.id.autoCity);
EditText area1 = (EditText) findViewById(R.id.edArea);
String aCity = city1.getText().toString().trim();
String aArea = area1.getText().toString().trim();
//here i have to match acity with all the values in responseList before sending it to next activity
Intent myInt = new Intent(getBaseContext(),
Map1Activity.class);
String city = city1.getText().toString();
String area = area1.getText().toString();
myInt.putExtra("city", city);
myInt.putExtra("area", area);
startActivity(myInt);
}
});
}
private class HttpGetTask extends AsyncTask<Void, Void, String> {
String URL = "xyzz.cities.json?app_id=test";
AndroidHttpClient mClient = AndroidHttpClient.newInstance("");
#Override
protected String doInBackground(Void... params) {
// http stuff
return null;
}
#Override
protected void onPostExecute(String result) {
try {
JSONArray json = new JSONArray(result);
//getting my response(cities)
Log.v("ResponseCity", result);
final List<String> responseList = new ArrayList<String>();
for (int i = 0; i < json.length(); i++) {
final JSONObject e = json.getJSONObject(i);
String name = e.getString("name");
//Adding all values to a stringList
responseList.add(name);
ArrayAdapter<String> adapter;
adapter = new ArrayAdapter<String>(SearchActivity.this,
android.R.layout.simple_dropdown_item_1line,
responseList);
AutoCompleteTextView textView = (AutoCompleteTextView) findViewById(R.id.autoCity);
textView.setAdapter(adapter);
}
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
if (null != mClient)
mClient.close();
}
}

So lets assume you need to match a certain city before you intent to a map :
private final List<String> responseList;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_search);
new HttpGetTask().execute();
Button shwBtn = (Button) findViewById(R.id.showBtn);
shwBtn.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
AutoCompleteTextView city1 = (AutoCompleteTextView) findViewById(R.id.autoCity);
EditText area1 = (EditText) findViewById(R.id.edArea);
String aCity = city1.getText().toString().trim();
String aArea = area1.getText().toString().trim();
//here i have to match acity with all the values in responseList before sending it to next activity
for(int i=0; i<responseList.size(); i++) {
if(responseList.get(i).equals(aCity)) {
Intent myInt = new Intent(getBaseContext(),
Map1Activity.class);
String city = city1.getText().toString();
String area = area1.getText().toString();
myInt.putExtra("city", city);
myInt.putExtra("area", area);
startActivity(myInt);
}
}
}
});
}
private class HttpGetTask extends AsyncTask<Void, Void, String> {
String URL = "xyzz.cities.json?app_id=test";
AndroidHttpClient mClient = AndroidHttpClient.newInstance("");
#Override
protected String doInBackground(Void... params) {
// http stuff
return null;
}
#Override
protected void onPostExecute(String result) {
try {
JSONArray json = new JSONArray(result);
//getting my response(cities)
Log.v("ResponseCity", result);
responseList = new ArrayList<String>();
for (int i = 0; i < json.length(); i++) {
final JSONObject e = json.getJSONObject(i);
String name = e.getString("name");
//Adding all values to a stringList
responseList.add(name);
ArrayAdapter<String> adapter;
adapter = new ArrayAdapter<String>(SearchActivity.this,
android.R.layout.simple_dropdown_item_1line,
responseList);
AutoCompleteTextView textView = (AutoCompleteTextView) findViewById(R.id.autoCity);
textView.setAdapter(adapter);
}
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
if (null != mClient)
mClient.close();
}
}
It should be something like that if I didnt guess your intent wrongly.

Android ListView OnItemClickListener()

I am a beginner in Android programming. I'm trying to put an ID identifier coming from MySQL database using JSON to my listview items but I can't make it work. When i click on an item it should probably give the id of the item I clicked but it is not working and all I can get is a false.
public class MessagingListFragment extends Fragment {
private String jsonResult;
private String url = "http://10.0.2.2/mobile/get_my_ins.php";
private ListView listView;
List<NameValuePair> nameValuePairs;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.messaging_list, container, false);
listView = (ListView) rootView.findViewById(R.id.listView1);
accessWebService();
return rootView;
}
// Async Task to access the web
#SuppressLint("NewApi")
private class JsonReadTask extends AsyncTask<String, Void, String> {
#Override
protected String doInBackground(String... params) {
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost(url);
nameValuePairs = new ArrayList<NameValuePair>(2);
nameValuePairs.add(new BasicNameValuePair("stud_id",MainActivity.user_id));
try {
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
} catch (UnsupportedEncodingException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
try {
HttpResponse response = httpclient.execute(httppost);
jsonResult = inputStreamToString(
response.getEntity().getContent()).toString();
}
catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
private StringBuilder inputStreamToString(InputStream is) {
String rLine = "";
StringBuilder answer = new StringBuilder();
BufferedReader rd = new BufferedReader(new InputStreamReader(is));
try {
while ((rLine = rd.readLine()) != null) {
answer.append(rLine);
}
}
catch (IOException e) {
}
return answer;
}
#Override
protected void onPostExecute(String result) {
ListDrawer();
}
}// end async task
public void accessWebService() {
try{
JsonReadTask task = new JsonReadTask();
// passes values for the urls string array
task.execute(new String[] { url });
}catch(Exception e){
Toast.makeText(getActivity(), e.getMessage().toString() + " 3", Toast.LENGTH_LONG).show();
}
}
// build hash set for list view
public void ListDrawer() {
List<Map<String, String>> classList = new ArrayList<Map<String, String>>();
try {
JSONObject jsonResponse = new JSONObject(jsonResult);
JSONArray jsonMainNode = jsonResponse.optJSONArray("recipient");
for (int i = 0; i < jsonMainNode.length(); i++) {
JSONObject jsonChildNode = jsonMainNode.getJSONObject(i);
String friend = jsonChildNode.optString("last_name") + ", " + jsonChildNode.optString("first_name");
String outPut = friend;
classList.add(createMsgList("recipient", outPut));
}
} catch (JSONException e) {
Toast.makeText(getActivity(), e.getMessage().toString() + " 1", Toast.LENGTH_LONG).show();
}
try{
SimpleAdapter simpleAdapter = new SimpleAdapter(getActivity() , classList,
android.R.layout.simple_list_item_1, new String[] { "recipient" }, new int[] { android.R.id.text1 });
listView.setAdapter(simpleAdapter);
listView.setOnItemClickListener(new OnItemClickListener(){
#Override
public void onItemClick(AdapterView<?> a, View v, int i,
long l) {
// TODO Auto-generated method stub
Toast.makeText(getActivity(), listView.getId(), Toast.LENGTH_LONG).show();
}
});
}catch(Exception e){
Toast.makeText(getActivity(), e.getMessage().toString() + " 2", Toast.LENGTH_LONG).show();
}
}
private HashMap<String, String> createMsgList(String name, String subject) {
HashMap<String, String> friendList = new HashMap<String, String>();
friendList.put(name, subject);
return friendList;
}
}

You are popping up a Toast with listView.getId() as the textual content. This will always give you the ID of the listview that is containing your list items.
If you want to grab the data for the view, you will either need to use the position parameter (int i in the onItemClick method), or you can try to grab the data from the View v if it is a custom view.
For example, instead of passing in a String array into your adapter, you can keep a reference to the array and find the data you are looking for with myArray[i].

by calling listView.getId() you requested the listview id not the item inside listview
change
Toast.makeText(getActivity(), listView.getId(), Toast.LENGTH_LONG).show();
to
Toast.makeText(getActivity(), "my id and position = "+i, Toast.LENGTH_LONG).show();
i is the item position inside listview and JSONArray
hope this information helpful to you

Error in my logcat, after some refreshes on my list my app crashes

Posts.java
public class Posts extends Activity implements OnCheckedChangeListener {
private static final String TAG = "POSTS";
private static final int NULL_COUNTRY_CODE = 6;
private static final int POST_BACK_BTN = 7;
private static final int CHANGE = 8;
private String un;
private SimpleAdapter simpleAdpt;
private EditText post;
private RadioGroup radGrp;
private GPSTracker mGPS;
private PullToRefreshListView lv;
private String initial = "Se eida ";
private String code;
private String unm;
private String postui;
private String tmp;
private String idPost;
// The data to show
private List<Map<String, String>> postsList = new ArrayList<Map<String, String>>();
JSONArray array = null;
private static List<String> list = new ArrayList<String>();
private String pst;
private AlertDialogFragments adf;
private FragmentTransaction ft;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_posts);
initLocation();
if (code == null) {
ft = getFragmentManager().beginTransaction();
// Create and show the dialog.
adf = new AlertDialogFragments(NULL_COUNTRY_CODE);
adf.show(ft, "dialog");
}
init();
}
private HashMap<String, String> createPost(String key, String name) {
HashMap<String, String> post = new HashMap<String, String>();
post.put(key, name);
return post;
}
private void initLocation() {
mGPS = new GPSTracker(this);
final double mLat = mGPS.getLatitude();
final double mLong = mGPS.getLongitude();
getAddress(mLat, mLong);
}
private void getAddress(double mLat, double mLong) {
try {
Geocoder gcd = new Geocoder(this, Locale.getDefault());
List<Address> addresses = gcd.getFromLocation(mLat, mLong, 100);
if (addresses.size() > 0) {
addresses = gcd.getFromLocation(mLat, mLong, 1);
code = addresses.get(0).getCountryCode();
}
} catch (IOException ex) {
ex.printStackTrace();
}
}
private void init() {
this.getWindow().setSoftInputMode(
WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_HIDDEN);
Intent i = getIntent();
un = i.getStringExtra("un");
post = (EditText) findViewById(R.id.lbl_txt);
radGrp = (RadioGroup) findViewById(R.id.rdg);
radGrp.setOnCheckedChangeListener(this);
// We get the ListView component from the layout
lv = (PullToRefreshListView) findViewById(R.id.listView);
// Set a listener to be invoked when the list should be refreshed.
((PullToRefreshListView) lv)
.setOnRefreshListener(new OnRefreshListener() {
#Override
public void onRefresh() {
((PullToRefreshListView) lv)
.setLastUpdated(new SimpleDateFormat(
"dd-MM-yyyy HH:mm").format(new Date()));
new GetData().execute();
}
});
simpleAdpt = new CustomAdapter(this, postsList,
android.R.layout.simple_list_item_1, new String[] { "post" },
new int[] { android.R.id.text1 });
new GetData().execute();
}
public class CustomAdapter extends SimpleAdapter {
HashMap<String, String> map = new HashMap<String, String>();
public CustomAdapter(Context context,
List<? extends Map<String, String>> data, int resource,
String[] from, int[] to) {
super(context, data, resource, from, to);
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
View row = super.getView(position, convertView, parent);
if (row != null) {
if (position % 2 == 0)
row.setBackgroundResource(R.drawable.listview_selector_even);
else
row.setBackgroundResource(R.drawable.listview_selector_odd);
}
return row;
}
}
private class GetData extends AsyncTask<String, String, String> {
private ProgressDialog progDailog;
#Override
protected void onPreExecute() {
super.onPreExecute();
progDailog = new ProgressDialog(Posts.this);
progDailog.setMessage("Loading...");
progDailog.setIndeterminate(false);
progDailog.setProgressStyle(ProgressDialog.STYLE_SPINNER);
progDailog.setCancelable(true);
progDailog.show();
}
#Override
protected String doInBackground(String... params) {
postsList.clear();
list.clear();
new Thread(new Runnable() {
public void run() {
//getting data from server and store into results
try {
array = new JSONArray(result);
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
for (int i = 0; i < array.length(); i++) {
JSONObject row = null;
try {
row = array.getJSONObject(i);
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
unm = row.getString("Username");
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
postui = row.getString("Post");
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
tmp = row.getString("Timestamp");
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
idPost = row.getString("Id");
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
pst = unm + ":\n" + postui + "\n"
+ tmp.substring(0, tmp.length() - 2);
list.add(i, idPost);
postsList.add(createPost("post", pst));
}
runOnUiThread(new Runnable() {
#Override
public void run() {
lv.setSelector(R.drawable.row_pressed);
lv.setAdapter(simpleAdpt);
simpleAdpt.notifyDataSetChanged();
registerForContextMenu(lv);
}
});
}
}).start();
return null;
}
#Override
protected void onPostExecute(String unused) {
super.onPostExecute(unused);
simpleAdpt.notifyDataSetChanged();
progDailog.dismiss();
((PullToRefreshListView) lv).onRefreshComplete();
}
}
// We want to create a context Menu when the user long click on an item
#Override
public void onCreateContextMenu(ContextMenu menu, View v,
ContextMenuInfo menuInfo) {
super.onCreateContextMenu(menu, v, menuInfo);
AdapterContextMenuInfo aInfo = (AdapterContextMenuInfo) menuInfo;
// We know that each row in the adapter is a Map
HashMap<?, ?> map = (HashMap<?, ?>) simpleAdpt
.getItem(aInfo.position - 1);
String string = (String) map.get("post");
menu.setHeaderTitle("Options");
menu.add(1, 1, 1, "Share via:");
menu.add(1, 2, 2, "Copy");
menu.add(1, 3, 3, "Delete");
menu.add(1, 1, 1, "Share via:");
menu.add(1, 2, 2, "Copy");
}
// This method is called when user selects an Item in the Context menu
#SuppressWarnings("deprecation")
#Override
public boolean onContextItemSelected(MenuItem item) {
int itemId = item.getItemId();
AdapterContextMenuInfo info = (AdapterContextMenuInfo) item
.getMenuInfo();
switch (itemId) {
case 1:
// Share intent
String key = ((TextView) info.targetView).getText().toString();
// create the send intent
Intent shareIntent = new Intent(android.content.Intent.ACTION_SEND);
// set the type
shareIntent.setType("text/plain");
// add a subject
shareIntent.putExtra(android.content.Intent.EXTRA_SUBJECT,
R.string.app_name);
// build the body of the message to be shared
String shareMessage = key.substring(0, key.length() - 20)
.substring(key.indexOf(":") + 2);
// add the message
shareIntent.putExtra(android.content.Intent.EXTRA_TEXT,
shareMessage);
// start the chooser for sharing
startActivity(Intent.createChooser(shareIntent, "Share via: "));
break;
case 2:
// Copy
String key1 = ((TextView) info.targetView).getText().toString();
int sdk = android.os.Build.VERSION.SDK_INT;
if (sdk < android.os.Build.VERSION_CODES.HONEYCOMB) {
android.text.ClipboardManager clipboard = (android.text.ClipboardManager) getSystemService(Context.CLIPBOARD_SERVICE);
clipboard.setText(key1.substring(0, key1.length() - 20)
.substring(key1.indexOf(":") + 2));
Toast.makeText(this, "Post copied.", Toast.LENGTH_SHORT).show();
} else {
android.content.ClipboardManager clipboard = (android.content.ClipboardManager) getSystemService(Context.CLIPBOARD_SERVICE);
android.content.ClipData clip = android.content.ClipData
.newPlainText("", key1.substring(0, key1.length() - 20)
.substring(key1.indexOf(":") + 2));
clipboard.setPrimaryClip(clip);
Toast.makeText(this, "Post copied.", Toast.LENGTH_SHORT).show();
}
break;
case 3:
// Delete
int index = info.position - 1;
//deletes a post
deletePost(list.get(index), this);
new GetData().execute();
break;
}
return true;
}
My Logcat output
The content of the adapter has changed but ListView did not receive a
notification. Make sure the content of your adapter is not modified
from a background thread, but only from the UI thread.

You are using postList as content for your adapter. Then you change that content in doInBackground(). You cannot do that.
Here's what you have to do. Gather the data in doInBackground() and return it. The result will be passed to onPostExecute. Then, in onPostExecute, change the adapter content and notify about the data change. onPostExecute() runs in the UI thread.
If you want to periodically update your AdapterView, use publishProgress.
You don't need to start a new Thread in doInBackground and you don't need to invoke any runOnUIThread method. It will work (especially the runOnUIThread part) but then you don't need the AsyncTask class.