Develop Reference

three categories item list get with diffrent category_id from json data in recyclerview android

I am developing an android app in which i store data from json.
everything is working fine but i am trying to implement multilayout Recyclerview where i show first and second category list items in a box with horizontal scroll and third list which we get from Category_id from json in vertical list
i get data from server in json where category list is open with unique category id just like
http://example.com/file_path&Category_id=3
and i get json data like
json data for category
[
{
"Category_ID":"3",
"Category_name":"Camera",
"Category_image":"upload\/images\/7089-2015-07-09.png"
},
{
"Category_ID":"9",
"Category_name":"Cars",
"Category_image":"upload\/images\/7789-2015-07-09.png"
},
]
json data for category list item
category list item json data. Every category list have unique id.
[
{
"Menu_ID":"19",
"Menu_name":"Sample 6",
"Price":"380",
"Menu_image":"upload\/images\/8611-2015-02-11.jpg"
},
{
"Menu_ID":"18",
"Menu_name":"Sample 5",
"Price":"500",
"Menu_image":"upload\/images\/8119-2015-02-11.jpg"
}
]
i am using recyclerview to show category and by clicking on category item category list is open
but i dont know how to call diffrent category list item from diffrent json category_id in a same recyclerview just like this image
Code is something like
MainActivity.java
public class ActivityProductList extends AppCompatActivity {
List<DataProductAdapter> ListOfdataAdapter;
RecyclerView recyclerView;
String HTTP_JSON_URL = "http: //example.com";
String Menu_Price_JSON = "Price";
String Menu_ID_JSON = "Menu_ID";
String Menu_Name_JSON = "Menu_name";
String Menu_Image_JSON = "Menu_image";
JsonArrayRequest RequestOfJSonArray ;
RequestQueue requestQueue ;
View view ;
int RecyclerViewItemPosition ;
RecyclerView.LayoutManager layoutManagerOfrecyclerView;
RecyclerView.Adapter recyclerViewadapter;
ArrayList<String> ImageTitleNameArrayListForClick;
public static ArrayList<Long> Menu_ID = new ArrayList<Long>();
public static ArrayList<String> Menu_name = new ArrayList<String>();
public static ArrayList<Double> Menu_price = new ArrayList<Double>();
public static ArrayList<String> Menu_image = new ArrayList<String>();
ProgressBar prgLoading;
SwipeRefreshLayout swipeRefreshLayout = null;
EditText edtKeyword;
ImageButton btnSearch;
TextView txtAlert;
public static double Tax;
public static String Currency;
String MenuAPI;
String TaxCurrencyAPI;
int IOConnect = 0;
long Category_ID;
String Category_name;
String Keyword;
// create price format
DecimalFormat formatData = new DecimalFormat("#.##");
private RecViewProductAdapter mla;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_product);
ImageTitleNameArrayListForClick = new ArrayList<>();
mla = new RecViewProductAdapter(ActivityProductList.this);
// menu API url
MenuAPI = examplelink+"&category_id=";
// tax and currency API url
TaxCurrencyAPI = examplelink2;
Intent iGet = getIntent();
Category_ID = iGet.getLongExtra("category_id",0);
Category_name = iGet.getStringExtra("category_name");
MenuAPI += Category_ID;
ListOfdataAdapter = new ArrayList<>();
swipeRefreshLayout = (SwipeRefreshLayout) findViewById(R.id.swipeRefreshLayout);
swipeRefreshLayout.setColorSchemeResources(R.color.orange, R.color.green, R.color.blue);
prgLoading = (ProgressBar) findViewById(R.id.prgLoading);
edtKeyword = (EditText) findViewById(R.id.edtKeyword);
btnSearch = (ImageButton) findViewById(R.id.btnSearch);
txtAlert = (TextView) findViewById(R.id.txtAlert);
recyclerView = (RecyclerView) findViewById(R.id.recyclerview_prod);
recyclerView.setHasFixedSize(true);
layoutManagerOfrecyclerView = new LinearLayoutManager(this);
recyclerView.setLayoutManager(layoutManagerOfrecyclerView);
recyclerViewadapter = new RecViewProductAdapter(ListOfdataAdapter, getApplicationContext());
recyclerView.setAdapter(recyclerViewadapter);
// JSON_HTTP_CALL();
new getTaxCurrency().execute();
swipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
#Override
public void onRefresh() {
new Handler().postDelayed(new Runnable() {
#Override
public void run() {
swipeRefreshLayout.setRefreshing(false);
IOConnect = 0;
clearData();
new getDataTask().execute();
}
}, 3000);
}
});
// Implementing Click Listener on RecyclerView.
recyclerView.addOnItemTouchListener(
new RecyclerItemClickListener(this, new RecyclerItemClickListener.OnItemClickListener() {
#Override
public void onItemClick(View arg1, int position)
{
// TODO: Implement this method
AdapterView<?> arg0;
long arg3;
Intent iDetail = new Intent(ActivityProductList.this, ActivityMenuDetail.class);
iDetail.putExtra("menu_id", Menu_ID.get(position));
startActivity(iDetail);
}
})
);
}
public class getTaxCurrency extends AsyncTask<Void, Void, Void>{
// show progressbar first
getTaxCurrency(){
if(!prgLoading.isShown()){
prgLoading.setVisibility(View.VISIBLE);
txtAlert.setVisibility(View.GONE);
}
}
#Override
protected Void doInBackground(Void... arg0) {
// TODO Auto-generated method stub
// parse json data from server in background
parseJSONDataTax();
return null;
}
#Override
protected void onPostExecute(Void result) {
// TODO Auto-generated method stub
// when finish parsing, hide progressbar
prgLoading.setVisibility(View.GONE);
// if internet connection and data available request menu data from server
// otherwise, show alert text
if((Currency != null) && IOConnect == 0){
new getDataTask().execute();
}else{
txtAlert.setVisibility(View.VISIBLE);
}
}
}
public void parseJSONDataTax(){
try {
// request data from tax and currency API
HttpClient client = new DefaultHttpClient();
HttpConnectionParams.setConnectionTimeout(client.getParams(), 15000);
HttpConnectionParams.setSoTimeout(client.getParams(), 15000);
HttpUriRequest request = new HttpGet(TaxCurrencyAPI);
HttpResponse response = client.execute(request);
InputStream atomInputStream = response.getEntity().getContent();
BufferedReader in = new BufferedReader(new InputStreamReader(atomInputStream));
String line;
String str = "";
while ((line = in.readLine()) != null){
str += line;
}
// parse json data and store into tax and currency variables
JSONObject json = new JSONObject(str);
JSONArray data = json.getJSONArray("data"); // this is the "items: [ ] part
JSONObject object_tax = data.getJSONObject(0);
JSONObject tax = object_tax.getJSONObject("tax_n_currency");
Tax = Double.parseDouble(tax.getString("Value"));
JSONObject object_currency = data.getJSONObject(1);
JSONObject currency = object_currency.getJSONObject("tax_n_currency");
Currency = currency.getString("Value");
} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
IOConnect = 1;
// TODO Auto-generated catch block
e.printStackTrace();
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
// clear arraylist variables before used
// asynctask class to handle parsing json in background
public class getDataTask extends AsyncTask<Void, Void, Void>{
// show progressbar first
getDataTask(){
if(!prgLoading.isShown()){
prgLoading.setVisibility(View.VISIBLE);
txtAlert.setVisibility(View.GONE);
}
}
#Override
protected Void doInBackground(Void... arg0) {
// TODO Auto-generated method stub
// parse json data from server in background
parseJSONData();
return null;
}
#Override
protected void onPostExecute(Void result) {
// TODO Auto-generated method stub
// when finish parsing, hide progressbar
prgLoading.setVisibility(View.GONE);
// if data available show data on list
// otherwise, show alert text
if(Menu_ID.size() > 0){
recyclerView.setVisibility(View.VISIBLE);
recyclerView.setAdapter(mla);
}else{
txtAlert.setVisibility(View.VISIBLE);
}
}
}
void clearData(){
Menu_ID.clear();
Menu_name.clear();
Menu_price.clear();
Menu_image.clear();
}
// method to parse json data from server
public void parseJSONData(){
clearData();
try {
// request data from menu API
HttpClient client = new DefaultHttpClient();
HttpConnectionParams.setConnectionTimeout(client.getParams(), 15000);
HttpConnectionParams.setSoTimeout(client.getParams(), 15000);
HttpUriRequest request = new HttpGet(MenuAPI);
HttpResponse response = client.execute(request);
InputStream atomInputStream = response.getEntity().getContent();
BufferedReader in = new BufferedReader(new InputStreamReader(atomInputStream));
String line;
String str = "";
while ((line = in.readLine()) != null){
str += line;
}
// parse json data and store into arraylist variables
JSONObject json = new JSONObject(str);
JSONArray data = json.getJSONArray("data"); // this is the "items: [ ] part
for (int i = 0; i < data.length(); i++) {
JSONObject object = data.getJSONObject(i);
JSONObject menu = object.getJSONObject("Menu");
Menu_ID.add(Long.parseLong(menu.getString("Menu_ID")));
Menu_name.add(menu.getString("Menu_name"));
Menu_price.add(Double.valueOf(formatData.format(menu.getDouble("Price"))));
Menu_image.add(menu.getString("Menu_image"));
}
} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
#Override
protected void onDestroy() {
// TODO Auto-generated method stub
//mla.imageLoader.clearCache();
recyclerView.setAdapter(null);
super.onDestroy();
}
#Override
public void onConfigurationChanged(final Configuration newConfig)
{
// Ignore orientation change to keep activity from restarting
super.onConfigurationChanged(newConfig);
}
}
adapter class
public class RecViewProductAdapter extends RecyclerView.Adapter<RecViewProductAdapter.ViewHolder> {
Context context;
List<DataProductAdapter> dataAdapters;
ImageLoader imageLoader;
private ActivityProductList _mainActivity;
private Activity activity;
public RecViewProductAdapter(ActivityProductList activity){
this._mainActivity=activity;
}
public RecViewProductAdapter(Activity act) {
this.activity = act;
}
public RecViewProductAdapter(List<DataProductAdapter> getDataAdapter, Context context){
super();
this.dataAdapters = getDataAdapter;
this.context = context;
}
#Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.lsv_item_menu_list, parent, false);
ViewHolder viewHolder = new ViewHolder(view);
return viewHolder;
}
#Override
public void onBindViewHolder(ViewHolder holder, int position) {
View convertView = null;
holder.menuname.setText(ActivityProductList.Menu_name.get(position));
holder.menuprice.setText(ActivityProductList.Menu_price.get(position)+" "+ActivityProductList.Currency);
Picasso.with(activity).load(Config.ADMIN_PANEL_URL+"/"+ActivityProductList.Menu_image.get(position)).placeholder(R.drawable.loading).into(holder.imgThumb);
}
#Override
public int getItemCount() {
return ActivityProductList.Menu_ID.size();
// return dataAdapters.size();
}
class ViewHolder extends RecyclerView.ViewHolder{
TextView txtText, txtSubText;
ImageView imgThumb;
public TextView menuname, menuprice, menunid;
public NetworkImageView VollyImageView ;
public ViewHolder(View itemView) {
super(itemView);
menuname = (TextView) itemView.findViewById(R.id.txtText);
menuprice = (TextView) itemView.findViewById(R.id.txtSubText);
imgThumb = (ImageView) itemView.findViewById(R.id.imgThumb);
}
}
}
any idea how can i achieve that layout with above code?
thankx

How to parse JSON dat with HTTP Post method in android studio

JSONParser.class
package com.example.diptiagravat.myapplication;
public class JSONParser {
public String getJSON(String url, int timeout) {
HttpURLConnection c = null;
try {
URL u = new URL(url);
c = (HttpURLConnection) u.openConnection();
c.setRequestMethod("GET");
c.setRequestProperty("Content-length", "0");
c.setUseCaches(false);
c.setAllowUserInteraction(false);
c.setConnectTimeout(timeout);
c.setReadTimeout(timeout);
c.connect();
int status = c.getResponseCode();
switch (status) {
case 200:
case 201:
BufferedReader br = new BufferedReader(new InputStreamReader(c.getInputStream()));
StringBuilder sb = new StringBuilder();
String line;
while ((line = br.readLine()) != null) {
sb.append(line + "\n");
}
br.close();
return sb.toString();
}
} catch (MalformedURLException ex) {
Logger.getLogger(getClass().getName()).log(Level.SEVERE, null, ex);
} catch (IOException ex) {
Logger.getLogger(getClass().getName()).log(Level.SEVERE, null, ex);
} finally {
if (c != null) {
try {
c.disconnect();
} catch (Exception ex) {
Logger.getLogger(getClass().getName()).log(Level.SEVERE, null, ex);
}
}
}
return null;
}
public String sendHTTPData(String urlpath, String id) {
HttpURLConnection connection = null;
try {
URL url=new URL(urlpath);
connection = (HttpURLConnection) url.openConnection();
connection.setDoOutput(true);
connection.setDoInput(true);
connection.setRequestMethod("POST");
connection.setRequestProperty("Content-Type", "application/json");
connection.setRequestProperty("Accept", "application/json");
OutputStreamWriter streamWriter = new OutputStreamWriter(connection.getOutputStream());
streamWriter.write(id);
streamWriter.flush();
StringBuilder stringBuilder = new StringBuilder();
if (connection.getResponseCode() == HttpURLConnection.HTTP_OK){
InputStreamReader streamReader = new InputStreamReader(connection.getInputStream());
BufferedReader bufferedReader = new BufferedReader(streamReader);
String response = null;
while ((response = bufferedReader.readLine()) != null) {
stringBuilder.append(response + "\n");
}
bufferedReader.close();
Log.d("test", stringBuilder.toString());
return stringBuilder.toString();
} else {
Log.e("test", connection.getResponseMessage());
return null;
}
} catch (Exception exception){
Log.e("test", exception.toString());
return null;
} finally {
if (connection != null){
connection.disconnect();
}
}
}
}
MainActivity.java
package com.example.diptiagravat.myapplication;
public class MainActivity extends AppCompatActivity {
private TextView txtid, txtcname;
Spinner spcnt, spstate;
public ArrayList<String> clist;
ArrayAdapter<String> cad;
public ArrayList<String> slist;
ArrayAdapter<String> sad;
public String strcnt;
private static String url = "http://urmiinfotech.com/demo/ifirst/app_api/get_country_list.php";
private static String stateUrl = "http://urmiinfotech.com/demo/ifirst/app_api/get_state_list.php";
private static final String TAG_USER = "country";
private static final String TAG_ID = "id";
private static final String TAG_NAME = "country_name";
private ArrayList<Country> clistModels;
/**
* ATTENTION: This was auto-generated to implement the App Indexing API.
* See https://g.co/AppIndexing/AndroidStudio for more information.
*/
private GoogleApiClient client;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initViews();
CountryAsyncTask countryAsyncTask= new CountryAsyncTask();
countryAsyncTask.execute();
}
private void initViews() {
txtid = (TextView) findViewById(R.id.tvid);
txtcname = (TextView) findViewById(R.id.tvcname);
spcnt = (Spinner) findViewById(R.id.spcnt);
spstate = (Spinner) findViewById(R.id.spstate);
clist = new ArrayList<String>();
slist = new ArrayList<String>();
}
public class CountryAsyncTask extends AsyncTask<Void, Void, String> {
#Override
protected String doInBackground(Void... params) {
// TODO Auto-generated method stub
JSONParser jParser = new JSONParser();
// Getting JSON from URL
JSONObject json = null;
try {
json = new JSONObject(jParser.getJSON(url, 5000));
} catch (JSONException e) {
e.printStackTrace();
}
return json.toString();
}
#Override
protected void onPostExecute(String result) {
// TODO Auto-generated method stub
super.onPostExecute(result);
Log.i("Result Ravi", result);
try {
JSONObject obj = new JSONObject(result);
JSONArray cntArray = obj.getJSONArray("country");
if (cntArray.length() > 0) {
for (int i = 0; i < cntArray.length(); i++) {
final JSONObject temp = cntArray.getJSONObject(i);
// txtid.setText(temp.getString("id"));
// txtcname.setText(temp.getString("country_name"));
Country country = new Gson().fromJson(temp.toString(), Country.class);
clist = new ArrayList<String>();
clistModels = new ArrayList<Country>();
clistModels.add(new Country(temp.optString("id"), temp.optString("country_name"), "", null));
clist.add(temp.getString("country_name"));
cad = new ArrayAdapter<String>(MainActivity.this, android.R.layout.simple_spinner_item, clist);
spcnt.setAdapter(cad);
spcnt.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
#Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
strcnt = clistModels.get(position).getId();
//strcnt = parent.getItemAtPosition(position).toString();
Log.i("id", strcnt);
new StatesAsyncTask().execute();
}
#Override
public void onNothingSelected(AdapterView<?> parent) {
}
});
// txtid.setText(temp.getString(country.getId()));
// txtcname.setText(temp.getString(country.getCountryName()));
}
}
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
public class StatesAsyncTask extends AsyncTask<Void, Void, String> {
#Override
protected void onPreExecute() {
super.onPreExecute();
}
#Override
protected String doInBackground(Void... params) {
JSONParser jParser = new JSONParser();
// Getting JSON from URL
JSONObject json = null;
try {
json = new JSONObject(jParser.sendHTTPData(stateUrl, strcnt));
} catch (JSONException e) {
e.printStackTrace();
}
return json.toString();
}
#Override
protected void onPostExecute(String s) {
super.onPostExecute(s);
try {
JSONObject obj = new JSONObject(s);
JSONArray stArray = obj.getJSONArray("statelist");
if (stArray.length() > 0) {
for (int i = 0; i < stArray.length(); i++) {
final JSONObject temp = stArray.getJSONObject(i);
// txtid.setText(temp.getString("id"));
// txtcname.setText(temp.getString("country_name"));
Statelist stlist = new Gson().fromJson(temp.toString(), Statelist.class);
slist = new ArrayList<String>();
// clistModels = new ArrayList<Country>();
//clistModels.add(new Country(temp.optString("id"), temp.optString("country_name"), "", null));
slist.add(temp.getString("state_name"));
sad = new ArrayAdapter<String>(MainActivity.this, android.R.layout.simple_spinner_item, slist);
spstate.setAdapter(sad);
spstate.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
#Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
// strcnt = clistModels.get(position).getId();
//strcnt = parent.getItemAtPosition(position).toString();
// Log.i("id", strcnt);
}
#Override
public void onNothingSelected(AdapterView<?> parent) {
}
});
// txtid.setText(temp.getString(country.getId()));
// txtcname.setText(temp.getString(country.getCountryName()));
}
}
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}
My response is null?

HttpURLConnection is deprecated in Android Lollipop, so please try to use DefaultHttpClient instead. Also, check your logs, this is at your onPostExecute():
Log.i("Result Ravi", result);
For DefaultHttpClient check this post.
Another way is to try Retrofit

parse JSON from URL on Android and display in listview

I'm trying to parse a JSON result from a URL in my Android app.
I have tried a few examples on the Internet, but can't get it to work.
What's the simplest way to fetch the URL and parse the JSON data show it in the listview
Json data :
[{"MemberID":"1","Username":"weerachai","Password":"12345","Name":"Weerachai
Nukitram","Tel":"0819876107","Email":"weerachai#gmail.com"},{"MemberID":"2","Username":"adisorn","Password":"ac143","Name":"Adisorn
Bunsong","Tel":"021978032","Email":"adisorn#gmail.com"},{"MemberID":"3","Username":"surachai","Password":"gg111","Name":"Surachai
Sirisart","Tel":"0876543210","Email":"surachai#gmail.com"}]
Android code :
public class MainActivity extends AppCompatActivity {
ArrayList<HashMap<String, String>> MyArrList;
#SuppressLint("NewApi")
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Permission StrictMode
if (android.os.Build.VERSION.SDK_INT > 9) {
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
StrictMode.setThreadPolicy(policy);
}
ShowData();
// btnSearch
final Button btnSearch = (Button) findViewById(R.id.btnSearch);
//btnSearch.setBackgroundColor(Color.TRANSPARENT);
// Perform action on click
btnSearch.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
ShowData();
}
});
}
public void ShowData()
{
// listView1
final ListView lisView1 = (ListView)findViewById(R.id.listView1);
// keySearch
EditText strKeySearch = (EditText)findViewById(R.id.txtKeySearch);
// Disbled Keyboard auto focus
InputMethodManager imm = (InputMethodManager)getSystemService(Context.INPUT_METHOD_SERVICE);imm.hideSoftInputFromWindow(strKeySearch.getWindowToken(), 0);
String url = "http:...............php";
// Paste Parameters
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("txtKeyword", strKeySearch.getText().toString()));
try {
JSONArray data = new JSONArray(getJSONUrl(url,params));
MyArrList = new ArrayList<HashMap<String, String>>();
HashMap<String, String> map;
for(int i = 0; i < data.length(); i++){
JSONObject c = data.getJSONObject(i);
map = new HashMap<String, String>();
map.put("MemberID", c.getString("MemberID"));
map.put("Username", c.getString("Username"));
map.put("Password", c.getString("Password"));
map.put("Name", c.getString("Name"));
map.put("Email", c.getString("Email"));
map.put("Tel", c.getString("Tel"));
MyArrList.add(map);
}
lisView1.setAdapter(new ImageAdapter(this));
// OnClick Item
lisView1.setOnItemClickListener(new AdapterView.OnItemClickListener() {
public void onItemClick(AdapterView<?> myAdapter, View myView, int position, long mylng) {
String sMemberID = MyArrList.get(position).get("MemberID").toString();
String sName = MyArrList.get(position).get("Name").toString();
String sTel = MyArrList.get(position).get("Tel").toString();
Intent newActivity = new Intent(MainActivity.this,DetailActivity.class);
newActivity.putExtra("MemberID", sMemberID);
startActivity(newActivity);
}
});
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public class ImageAdapter extends BaseAdapter
{
private Context context;
public ImageAdapter(Context c)
{
// TODO Auto-generated method stub
context = c;
}
public int getCount() {
// TODO Auto-generated method stub
return MyArrList.size();
}
public Object getItem(int position) {
// TODO Auto-generated method stub
return position;
}
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}
public View getView(final int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
if (convertView == null) {
convertView = inflater.inflate(R.layout.activity_column, null);
}
// ColMemberID
TextView txtMemberID = (TextView) convertView.findViewById(R.id.ColMemberID);
txtMemberID.setPadding(10, 0, 0, 0);
txtMemberID.setText(MyArrList.get(position).get("MemberID") +".");
// R.id.ColName
TextView txtName = (TextView) convertView.findViewById(R.id.ColName);
txtName.setPadding(5, 0, 0, 0);
txtName.setText(MyArrList.get(position).get("Name"));
// R.id.ColTel
TextView txtTel = (TextView) convertView.findViewById(R.id.ColTel);
txtTel.setPadding(5, 0, 0, 0);
txtTel.setText(MyArrList.get(position).get("Tel"));
return convertView;
}
}
public String getJSONUrl(String url,List<NameValuePair> params) {
StringBuilder str = new StringBuilder();
HttpClient client = new DefaultHttpClient();
HttpPost httpPost = new HttpPost(url);
try {
httpPost.setEntity(new UrlEncodedFormEntity(params));
HttpResponse response = client.execute(httpPost);
StatusLine statusLine = response.getStatusLine();
int statusCode = statusLine.getStatusCode();
if (statusCode == 200) { // Download OK
HttpEntity entity = response.getEntity();
InputStream content = entity.getContent();
BufferedReader reader = new BufferedReader(new InputStreamReader(content));
String line;
while ((line = reader.readLine()) != null) {
str.append(line);
}
} else {
Log.e("Log", "Failed to download result..");
}
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return str.toString();
}
}

how to Get selected spinner item's Id from JSON response?

Outline:
I have to get some operators list from server.
Below is my JSON data
{"PrepaidServiceList":[{"operator_id":"2","operator_name":"Reliance GSM"},{"operator_id":"9","operator_name":"TATA CDMA\/Walky"},{"operator_id":"10","operator_name":"Virgin GSM - TATA"},{"operator_id":"17","operator_name":"Docomo Mobile"},{"operator_id":"18","operator_name":"Idea Mobile"},{"operator_id":"35","operator_name":"T24 (DOCOMO)"},{"operator_id":"22","operator_name":"VodaFone Mobile"},{"operator_id":"28","operator_name":"MTS DataCard"},{"operator_id":"29","operator_name":"Reliance CDMA\/NetConnect\/Land Line"},{"operator_id":"30","operator_name":"TATA Photon"},{"operator_id":"32","operator_name":"Idea Netsetter"},{"operator_id":"33","operator_name":"MTS Prepaid"},{"operator_id":"38","operator_name":"Bsnl - Data\/Validity"},{"operator_id":"39","operator_name":"Bsnl Topup"},{"operator_id":"41","operator_name":"Bsnl Data Card"},{"operator_id":"45","operator_name":"Aircel"},{"operator_id":"46","operator_name":"Aircel Pocket Internet"},{"operator_id":"52","operator_name":"Virgin CDMA - TATA"},{"operator_id":"53","operator_name":"Docomo Special"},{"operator_id":"55","operator_name":"Videocon"},{"operator_id":"56","operator_name":"MTNL Mumbai"},{"operator_id":"57","operator_name":"MTNL Mumbai Special"},{"operator_id":"58","operator_name":"Uninor"},{"operator_id":"59","operator_name":"MTNL Delhi"},{"operator_id":"60","operator_name":"MTNL Delhi Special"},{"operator_id":"61","operator_name":"Uninor Special"},{"operator_id":"62","operator_name":"Videocon Special"},{"operator_id":"63","operator_name":"MTNL Delhi"},{"operator_id":"64","operator_name":"MTNL Mumbai"}]}
JSON data has "operator_id" and "operator_name".
I have to get both from url and display only "operator_name" in a spinner.
I Have already implemented the above. Please find the main_activity for reference
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
spinner = (Spinner) findViewById(R.id.spinner);
plans = (TextView)findViewById(R.id.browseplans);
plans.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent in = new Intent(getApplicationContext(), BrowsePlans.class);
in.putExtra("operator_id", id_click);
startActivity(in);
}
});
SimpleDateFormat sdf = new SimpleDateFormat("ddMMyyyyHHmmss");
sdf.setTimeZone(TimeZone.getTimeZone("GMT+5:30"));
currentDateandTime = sdf.format(new Date());
apikey = API_KEY.toString();
currentDateandTime.toString();
codetohash = currentDateandTime + apikey;
SHA1Hash = computeSha1OfString(codetohash);
uri = new Uri.Builder()
.scheme("http")
.authority("xxx.in")
.path("atm")
.appendQueryParameter("op", "GetPrepaidServiceList")
.appendQueryParameter("responseType", "json")
.appendQueryParameter("time", currentDateandTime)
.appendQueryParameter("clientId", ClientId)
.appendQueryParameter("hash", SHA1Hash)
.build();
stringUri = uri.toString();
new DataFromServer().execute();
} //end onCreate()
private class DataFromServer extends AsyncTask<String, Void, Void> {
#Override
protected void onPreExecute() {
}
#Override
protected Void doInBackground(String... params) {
try {
url = new URL(stringUri);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setDoInput(true);
conn.setDoOutput(true);
conn.setUseCaches(false);
conn.setRequestMethod("POST");
conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
conn.setRequestProperty("Host", "xxx.in");
/* Uri.Builder builder = new Uri.Builder()
.appendQueryParameter("val1", from)
.appendQueryParameter("val2", to);
String query = builder.build().getEncodedQuery();
OutputStream os = conn.getOutputStream();
BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(os, "UTF-8"));
writer.write(query);
writer.flush();
writer.close();
os.close();*/
conn.connect();
reader = new BufferedReader(new InputStreamReader(conn.getInputStream()));
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
text = sb.toString();
} catch (Exception ex) {
ex.toString();
} finally {
try {
reader.close();
} catch (Exception ex) {
ex.toString();
}
}
/*//only for json object not array
JSONObject parentObject = new JSONObject(text);
name = parentObject.getString("Hello");*/
try {
JSONObject jsonObj = new JSONObject(text);
// Getting JSON Array node
JSONArray jsonArray = jsonObj.getJSONArray("PrepaidServiceList");
// looping through All Contacts
for (int i = 0; i < jsonArray.length(); i++) {
c = jsonArray.getJSONObject(i);
id = c.getString("operator_id");
name = c.getString("operator_name");
list.add(name);
}
} catch (Exception e) {
e.toString();
}
return null;
}
#Override
protected void onPostExecute(Void unused) {
ArrayAdapter adapter =
new ArrayAdapter(getApplication(), R.layout.list_item, R.id.text1, list);
spinner.setAdapter(adapter);
spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
public void onItemSelected(AdapterView<?> arg0, View view, int position, long id) {
int item = spinner.getSelectedItemPosition();
id_click = spinner.getSelectedItem().toString();
}
public void onNothingSelected(AdapterView<?> arg0) {
}
});
}
}
Problem:
I am able to get user selected "operator_name" from spinner using "onItemSelectedListener".
But i need the "operator_id" of user selected "operator_name"
I have to pass the exact user selected "operator_id" to another class.
If i directly pass the operator_id, it has only the last id which is not the user selected one.
I am confused and don't know how to implement this.
Any Help would be greatly appreciated.
Thanks.

Try this way it worked for me
class LoadAlbums extends AsyncTask<String, String, ArrayList<HashMap<String,String>>> {
ArrayAdapter<String> adaptercountry ;
#Override
protected void onPreExecute() {
super.onPreExecute();
}
protected ArrayList<HashMap<String,String>> doInBackground(String... args) {
ServiceHandler sh = new ServiceHandler();
// Making a request to url and getting response
data = new ArrayList<HashMap<String, String>>();
String jsonStr = sh.makeServiceCall(COUNTRY_URL, ServiceHandler.GET);
Log.d("Response: ", "> " + jsonStr);
if (jsonStr != null) {
try {
JSONObject jsonObj = new JSONObject(jsonStr);
// Getting JSON Array node your array
country_list = jsonObj.getJSONArray(COUNTRY_LIST);
// looping through All Contacts
for (int i = 0; i < country_list.length(); i++) {
JSONObject c = country_list.getJSONObject(i);
// creating new HashMap
HashMap<String, String> map = new HashMap<String, String>();
// adding each child node to HashMap key => value
map.put(OP_ID, c.getString(OP_ID));
map.put(OP_NAME,c.getString(OP_NAME));
data.add(map);
}
} catch (JSONException e) {
e.printStackTrace();
}
} else {
Log.e("ServiceHandler", "Couldn't get any data from the url");
}
return data;
}
protected void onPostExecute(ArrayList<HashMap<String,String>> result) {
super.onPostExecute(result);
String[] arrConuntry=new String[data.size()];
for(int index=0;index<data.size();index++){
HashMap<String, String> map=data.get(index);
arrConuntry[index]=map.get(OP_NAME);
}
// pass arrConuntry array to ArrayAdapter<String> constroctor :
adaptercountry = new ArrayAdapter<String>(getActivity(),
android.R.layout.simple_spinner_dropdown_item,
arrConuntry);
spcountry.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View w) {
new AlertDialog.Builder(getActivity())
.setTitle("Select")
.setAdapter(adaptercountry, new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
spcountry.setText(adaptercountry.getItem(which).toString());
try {
cname=country_list.getJSONObject(which).getString("operator_id");
Log.d("Response: ", "> " + cname);
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
dialog.dismiss();
}
}).create().show();
}
});
}

In this case you can modify the AsyncTask to return in the doInBackground() method a List<HashMap<Integer, String>>. So you can store both operator_id and operator_name in the list and display each wanted item in the spinner.
Hope it helps!!!

Create a new ArrayList like
operator_List = new ArrayList<String>();
Add value in ArrayList like
opt_code.setName(jsonobject.optString("operator_name"));
opt_code.setId(jsonobject.optString("operator_id"));
list.add(opt_code);
datalist.add(jsonobject.optString("operator_name"));
operator_List .add(jsonobject.getString("operator_id")
and get operator_id
protected void onPostExecute(Void unused) {
ArrayAdapter adapter =
new ArrayAdapter(getApplication(), R.layout.list_item, R.id.text1, list);
spinner.setAdapter(adapter);
spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
public void onItemSelected(AdapterView<?> arg0, View view, int position, long id) {
id_click = spinner.getSelectedItemPosition();
String opt_code = operator_List.get(position);
String selectedItem = arg0.getItemAtPosition(position).toString();
}
public void onNothingSelected(AdapterView<?> arg0) {
}
});
}
May be help you

Your can get Whole object of selected Spinner item use below code:
Object item = arg0.getItemAtPosition(position);

To get Id of selected item in spinner android

Here, It is my java file
public class Create_Event extends SherlockFragment
implements OnClickListener {
class Organizer extends AsyncTask<Void, Void, Object> {
private ProgressDialog pdia;
protected void onPreExecute() {
super.onPreExecute();
pdia = new ProgressDialog(getActivity());
pdia.setMessage("Loading...");
pdia.show();
}
#Override
protected Object doInBackground(Void... params) {
try {
HttpClient httpclient1 = new DefaultHttpClient();
HttpPost httppost1 = new HttpPost(Constants.BASE_URL
+ "mobile_logins/all_my_event");
List<NameValuePair> nameValuePairs1 = new ArrayList<NameValuePair>(1);
nameValuePairs1.add(new BasicNameValuePair("id", Constants.id));
httppost1.setEntity(new UrlEncodedFormEntity(nameValuePairs1));
HttpResponse response1 = httpclient1.execute(httppost1);
String _response1 = EntityUtils.toString(response1.getEntity());
Log.e("test", _response1);
jsobj1 = new JSONObject(_response1);
orr = jsobj1.getJSONArray("organizers");
String orggg = orr.toString();
Log.e("Organization", orggg);
return jsobj1;
} catch (Exception e) {
e.printStackTrace();
Log.e("Fail 1", e.toString());
return e;
}
}
protected void onPostExecute(Object jsobj) {
pdia.dismiss();
String post = jsobj.toString();
Log.e("event_rese", post);
int len = orr.length();
Log.e("json_posexe", orr.toString());
Log.e("Onpostexe_arrlength", String.valueOf(len));
try {
JSONArray JA = orr;
JSONObject json1 = null;
final String[] host1 = new String[orr.length()];
final String[] host_id=new String[orr.length()];
for(int i = 0; i < len; i++) {
json1 = JA.getJSONObject(i);
host1[i] = json1.getString("name");
host_id[i] = json1.getString("id");
}
List<String> list = new ArrayList<String>();
for(int i = 0; i < host1.length; i++) {
list.add(host1[i]);
}
Log.e("onpostexe_list",list.toString());
ArrayAdapter<String> adapter =
new ArrayAdapter<String>(getActivity().getApplicationContext(),
android.R.layout.simple_spinner_item,list);
adapter.setDropDownViewResource(
android.R.layout.simple_spinner_dropdown_item);
sp.setAdapter(adapter);
sp.setOnItemSelectedListener(new OnItemSelectedListener() {
#Override
public void onItemSelected(AdapterView<?> arg0, View arg1,
int position, long id) {
organization=sp.getSelectedItem().toString();
}
#Override
public void onNothingSelected(AdapterView<?> arg0) {
// TODO Auto-generated method stub
}
});
} catch(Exception e) {
Log.e("Fail 3", e.toString());
}
if (json instanceof JSONObject) {
asyncrun = true;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
} else {
ExecptionHandler.register(getActivity(), (Exception) jsobj);
}
}
}
}
}
Here, I need id of the selected organization from spinner. The id and organization name came from Jsonobject(here jsobj1). How to get id of selected item from jsonobject? Is it possible?? Please Help...

Create a Organization bean as below with method #Override toString()
public class Organization {
private Integer orgId; // Long etc.
private String orgName;
// more properties if you need
#Override // Mandatory
public String toString() {
return orgName; // Return anything, what you want to show in spinner
}
// Getter & Setter
}
Then Create a java.util.List<Organization> organizationList; from your API response JSONArray or any other way. And make and set ArrayAdapter<Organization> to load Spinner options.
List<Organization> organizationList = ... // init using JSON Data OR any how;
ArrayAdapter<Organization> orgAdapter = new ArrayAdapter<Organization>(this, android.R.layout.simple_spinner_item, organizationList);
orgAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
Spinner mySpinner = findViewById(R.id.orgSpinner);
mySpinner.setAdapter(orgAdapter);
Now get selected Organization and its Properties in any Click/Change Event like below
// In any OnClick / OnSelect event
Organization selectedOrganization = (Organization) mySpinner.getSelectedItem();
Integer orgId = selectedOrganization.getOrgId();
String orgName = selectedOrganization.getOrgName();
// and if you have more properties

Yes,it is Possible, try like below.
HashMap<String,String> map_values = new HashMap<String,String>();
for(int i = 0; i < len; i++) {
json1 = JA.getJSONObject(i);
host1[i] = json1.getString("name");
host_id[i] = json1.getString("id");
map_values.put(host1[i],host_id[i]);
}
and spinner
sp.setOnItemSelectedListener(new OnItemSelectedListener() {
#Override
public void onItemSelected(AdapterView<?> arg0, View arg1,
int position, long id) {
String value = sp.getSelectedItem().toString();
String id = map_values.get(value);
Log.v("id",""+id);
}
#Override
public void onNothingSelected(AdapterView<?> arg0) {
// TODO Auto-generated method stub
}
});

mSpinner.getSelectedItemId(); // here is your selected item's Id.
BTW google first, ask later :)