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I have taken text from JSON format of an API now I want to add image to it from same API in my android app

I'm new to android and finding it tough to update realtime text and images from API's in JSON format. I've successfully added text to my listview. Now I want to add image beside it. Thanks in advance.
MainActivity.java file
package com.example.android.samplelayout;
import android.media.Image;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.widget.ImageView;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.Toast;
import android.net.Uri;
import android.graphics.drawable.Drawable;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.net.URI;
import java.util.ArrayList;
import java.util.HashMap;
public class MainActivity extends AppCompatActivity {
private String TAG = MainActivity.class.getSimpleName();
private ListView lv;
ArrayList<HashMap<String, String>> contactList;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
contactList = new ArrayList<>();
lv = (ListView) findViewById(R.id.list);
new GetContacts().execute();
}
private class GetContacts extends AsyncTask<Void, Void, Void> {
#Override
protected void onPreExecute() {
super.onPreExecute();
Toast.makeText(MainActivity.this,"Json Data is downloading",Toast.LENGTH_LONG).show();
}
#Override
protected Void doInBackground(Void... arg0) {
HttpHandler sh = new HttpHandler();
// Making a request to url and getting response
String url = "http://webhose.io/search?token=9c55cbb1-2f1c-4700-9c1e-67e685152506&format=json&q=Indian%20Startup";
String jsonStr = sh.makeServiceCall(url);
Log.e(TAG, "Response from url: " + jsonStr);
if (jsonStr != null) {
try {
JSONObject jsonObj = new JSONObject(jsonStr);
// Getting JSON Array node
//JSONObject responseObject = jsonObj.getJSONObject("response");
JSONArray responseArray = jsonObj.getJSONArray("posts");
// looping through All Contacts
for (int i = 0; i < responseArray.length(); i++) {
JSONObject firstObject = responseArray.getJSONObject(i);
//JSONObject titleObject = firstObject.getJSONObject("title");
// Extract out the title, time, and tsunami values
//String image = firstObject.getString("main_image");
String title = firstObject.getString("title");
// tmp hash map for single contact
HashMap<String , String> contact = new HashMap<>();
// adding each child node to HashMap key => value
//contact.put("pic", image);
contact.put("name", title);
// adding contact to contact list
contactList.add(contact);
}
} catch (final JSONException e) {
Log.e(TAG, "Json parsing error: " + e.getMessage());
runOnUiThread(new Runnable() {
#Override
public void run() {
Toast.makeText(getApplicationContext(),
"Json parsing error: " + e.getMessage(),
Toast.LENGTH_LONG).show();
}
});
}
} else {
Log.e(TAG, "Couldn't get json from server.");
runOnUiThread(new Runnable() {
#Override
public void run() {
Toast.makeText(getApplicationContext(),
"Couldn't get json from server. Check LogCat for possible errors!",
Toast.LENGTH_LONG).show();
}
});
}
return null;
}
#Override
protected void onPostExecute(Void result) {
super.onPostExecute(result);
ListAdapter adapter = new SimpleAdapter(MainActivity.this, contactList,R.layout.list_item, new String[]{"name"}, new int[]{ R.id.name});
lv.setAdapter(adapter);
}
}
}
HttpHandler.java file
package com.example.android.samplelayout;
import android.util.Log;
import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.ProtocolException;
import java.net.URL;
public class HttpHandler {
private static final String TAG = HttpHandler.class.getSimpleName();
public HttpHandler() {
}
public String makeServiceCall(String reqUrl) {
String response = null;
try {
URL url = new URL(reqUrl);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setRequestMethod("GET");
// read the response
InputStream in = new BufferedInputStream(conn.getInputStream());
response = convertStreamToString(in);
} catch (MalformedURLException e) {
Log.e(TAG, "MalformedURLException: " + e.getMessage());
} catch (ProtocolException e) {
Log.e(TAG, "ProtocolException: " + e.getMessage());
} catch (IOException e) {
Log.e(TAG, "IOException: " + e.getMessage());
} catch (Exception e) {
Log.e(TAG, "Exception: " + e.getMessage());
}
return response;
}
private String convertStreamToString(InputStream is) {
BufferedReader reader = new BufferedReader(new InputStreamReader(is));
StringBuilder sb = new StringBuilder();
String line;
try {
while ((line = reader.readLine()) != null) {
sb.append(line).append('\n');
}
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
is.close();
} catch (IOException e) {
e.printStackTrace();
}
}
return sb.toString();
}
}

I would suggest using a library that automatically puts an Image into an ImageView only using the Url of the image you want to use. Picasso would be a good Library for your use. You have to fetch the Image URL off the Json object and load it into the ImageView using Picasso's load().into()

json parsing error in android java

hi i'm trying to get element of this url, but every time an error occured
this url get you a json but i couldn't parse it
i try
private class Geturl 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) {
HttpHandler sh = new HttpHandler();
// Making a request to url and getting response
String jsonStr = sh.makeServiceCall("https://www.instagram.com/"+username+"/?__a=1".trim());
//Log.e(TAG, "Response from url: " + jsonStr);
if (jsonStr != null) {
try {
JSONObject jsonObj = new JSONObject(jsonStr);
//user is correct or i use wrong
//check url and parse it with online json parser
JSONArray contacts = jsonObj.getJSONArray("user");
JSONObject c = contacts.getJSONObject(0);
//profile_pic_url_hd is node or not ?
img_url=c.getString("profile_pic_url_hd");
} catch (final JSONException e) {
//Log.e(TAG, "Json parsing error: " + e.getMessage());
runOnUiThread(new Runnable() {
#Override
public void run() {
Toast.makeText(getApplicationContext(),
"Json parsing error: " + e.getMessage(),
Toast.LENGTH_LONG)
.show();
}
});
}
} else {
//Log.e(TAG, "Couldn't get json from server.");
runOnUiThread(new Runnable() {
#Override
public void run() {
Toast.makeText(getApplicationContext(),
"Couldn't get json from server. Check LogCat for possible errors!",
Toast.LENGTH_LONG)
.show();
}
});
}
return null;
}
#Override
protected void onPostExecute(Void result) {
super.onPostExecute(result);
// Dismiss the progress dialog
if (pDialog.isShowing())
pDialog.dismiss();
}
}
parsed Json in picture
no error occur in http handler just in getting elements error happened
httphandler class
import android.util.Log;
import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.ProtocolException;
import java.net.URL;
/**
* Created by jefferson on 3/24/2017.
*/
public class HttpHandler {
private static final String TAG = HttpHandler.class.getSimpleName();
public HttpHandler() {
}
public String makeServiceCall(String reqUrl) {
String response = null;
try {
URL url = new URL(reqUrl);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setRequestMethod("GET");
// read the response
InputStream in = new BufferedInputStream(conn.getInputStream());
response = convertStreamToString(in);
} catch (MalformedURLException e) {
Log.e(TAG, "MalformedURLException: " + e.getMessage());
} catch (ProtocolException e) {
Log.e(TAG, "ProtocolException: " + e.getMessage());
} catch (IOException e) {
Log.e(TAG, "IOException: " + e.getMessage());
} catch (Exception e) {
Log.e(TAG, "Exception: " + e.getMessage());
}
return response;
}
private String convertStreamToString(InputStream is) {
BufferedReader reader = new BufferedReader(new InputStreamReader(is));
StringBuilder sb = new StringBuilder();
String line;
try {
while ((line = reader.readLine()) != null) {
sb.append(line).append('\n');
}
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
is.close();
} catch (IOException e) {
e.printStackTrace();
}
}
return sb.toString();
}
}
thanks if anyone could tell me i get correct elements or not
thanks in advance.

JSONObject contacts = jsonObj.getJSONObject("user");
img_url=c.getString("profile_pic_url_hd");
The user object is not an array.

Android misfit API OAuth 2 : How to save access token

With the following android code, i manage to do this:
Display authentification page, on my Android smartphone, to my user
Login, as a valid user, through this page with my credentials
Catch the Auth code
See, on my smarthpone webview, the access_token
public class MainActivity extends AppCompatActivity
{
public static String OAUTH_URL = "https://api.misfitwearables.com/auth/dialog/authorize";
public static String OAUTH_ACCESS_TOKEN_URL = "https://api.misfitwearables.com/auth/tokens/exchange";
public static String CLIENT_ID = "my id";
public static String CLIENT_SECRET = "my secret code";
public static String CALLBACK_URL = "just a simple url";
public static String SCOPE = "public,birthday,email,tracking,session,sleep";
#Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.other);
String url = OAUTH_URL+ "?response_type=code" +"&client_id=" + CLIENT_ID+ "&redirect_uri=" + CALLBACK_URL + "&scope=" + SCOPE;
WebView webview = (WebView) findViewById(R.id.aaa);
webview.getSettings().setJavaScriptEnabled(true);
webview.setWebViewClient(new WebViewClient() {
public void onPageStarted(WebView view, String url, Bitmap favicon) {
String accessTokenFragment = "access_token=";
String accessCodeFragment = "code=";
if (url.contains(accessCodeFragment))
{
String accessCode = url.substring(url.indexOf(accessCodeFragment));
String query = "grant_type=authorization_code" + "&client_id=" + CLIENT_ID + "&client_secret=" + CLIENT_SECRET + "&" + accessCode + "&redirect_uri=" + CALLBACK_URL;
view.postUrl(OAUTH_ACCESS_TOKEN_URL, query.getBytes());
System.out.println("url:" + url);
System.out.println(accessCode);
}
System.out.println(url);
if (url.contains(accessTokenFragment)) {
String accessToken = url.substring(url.indexOf(accessTokenFragment));
url = url.replace("#", "?");
//view.loadUrl(url);
System.out.println("token=" + accessToken);
}
}
});
webview.loadUrl(url);
}
}
Like I said above, I manage to display the access_token on my webview, on my smarthpone. But I am not able to catch this token, to make get request in order to recover user's data.
I am novice in java/android, but I have some skills in C.
I just took the time to discover Java, so my skills in this area are limited.
Is that someone could advise me?

I have found some piece of code, and made an Android App that works well.
Main
package com.example.vta.webview_example;
/*
* Note that I was a complete novice in Java and Android when I was writting this.
* Note that I found pieces of code that I adapted for my needs.
*/
import org.apache.http.HttpStatus;
import org.json.JSONException;
import org.json.JSONObject;
import android.content.Context;
import android.net.Uri;
import android.os.AsyncTask;
import android.os.Bundle;
import android.app.Activity;
import android.app.Dialog;
import android.app.ProgressDialog;
import android.content.Intent;
import android.content.SharedPreferences;
import android.graphics.Bitmap;
import android.os.StrictMode;
import android.util.Log;
import android.view.View;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
import java.io.BufferedReader;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.Calendar;
public class MainActivity extends Activity
{
private static String CLIENT_ID = "your ID_CLIENT code";
private static String CLIENT_SECRET ="your SECRET_CLIENT code";
private static String REDIRECT_URI="http://localhost";
private static String GRANT_TYPE="authorization_code";
private static String TOKEN_URL ="https://api.misfitwearables.com/auth/tokens/exchange";
private static String OAUTH_URL ="https://api.misfitwearables.com/auth/dialog/authorize";
private static String OAUTH_SCOPE="public,birthday,email,tracking,session,sleep";
WebView web;
Button auth;
SharedPreferences pref;
TextView Access;
#Override
protected void onCreate(Bundle savedInstanceState)
{
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
StrictMode.setThreadPolicy(policy);
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
pref = getSharedPreferences("AppPref", MODE_PRIVATE);
Access =(TextView)findViewById(R.id.Access);
auth = (Button)findViewById(R.id.auth);
auth.setOnClickListener(new View.OnClickListener()
{
Dialog auth_dialog;
#Override
public void onClick(View arg0)
{
auth_dialog = new Dialog(MainActivity.this);
auth_dialog.setContentView(R.layout.auth_dialog);
web = (WebView)auth_dialog.findViewById(R.id.webv);
web.getSettings().setJavaScriptEnabled(true);
web.loadUrl(OAUTH_URL+"?redirect_uri="+REDIRECT_URI+"&response_type=code&client_id="+CLIENT_ID+"&scope="+OAUTH_SCOPE);
web.setWebViewClient(new WebViewClient()
{
boolean authComplete = false;
Intent resultIntent = new Intent();
String authCode;
#Override
public void onPageStarted(WebView view, String url, Bitmap favicon)
{
super.onPageStarted(view, url, favicon);
}
#Override
public void onPageFinished(WebView view, String url)
{
super.onPageFinished(view, url);
if (url.contains("?code=") && authComplete != true)
{
Uri uri = Uri.parse(url); //Create an uri, identical to the url
System.out.println("=====> uri <===== \n" + uri);
authCode = uri.getQueryParameter("code"); //Parse the uri to fond the first occurence of "code", and extract his value
Log.i("", "CODE : " + authCode);
System.out.println("=====> code <===== \n" + authCode);
authComplete = true;
resultIntent.putExtra("code", authCode);
MainActivity.this.setResult(Activity.RESULT_OK, resultIntent);
setResult(Activity.RESULT_CANCELED, resultIntent);
SharedPreferences.Editor edit = pref.edit();
edit.putString("Code", authCode);
edit.commit();
auth_dialog.dismiss();
new TokenGet().execute();
Toast.makeText(getApplicationContext(),"Authorization Code is: " +authCode, Toast.LENGTH_SHORT).show();
}
else if(url.contains("error=access_denied"))
{
Log.i("", "ACCESS_DENIED_HERE");
resultIntent.putExtra("code", authCode);
authComplete = true;
setResult(Activity.RESULT_CANCELED, resultIntent);
Toast.makeText(getApplicationContext(), "Error Occured", Toast.LENGTH_SHORT).show();
auth_dialog.dismiss();
}
}
});
auth_dialog.show();
auth_dialog.setTitle("Authorize Misfit");
auth_dialog.setCancelable(true);
}
});
}
private class TokenGet extends AsyncTask<String, String, JSONObject>
{
private ProgressDialog pDialog;
String Code;
#Override
protected void onPreExecute()
{
super.onPreExecute();
pDialog = new ProgressDialog(MainActivity.this);
pDialog.setMessage("Contacting Misfit ...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(true);
Code = pref.getString("Code", "");
pDialog.show();
}
#Override
protected JSONObject doInBackground(String... args)
{
GetAccessToken jParser = new GetAccessToken();
JSONObject json = jParser.gettoken(TOKEN_URL,Code,CLIENT_ID,CLIENT_SECRET,REDIRECT_URI,GRANT_TYPE);
System.out.println("=====> json <===== \n" + json);
return json;
}
#Override
protected void onPostExecute(JSONObject json)
{
pDialog.dismiss();
if (json != null)
{
try
{
final String tok = json.getString("access_token");
Log.d("Token Access", tok);
System.out.println("TOKN = " + tok);
auth.setText("Authenticated");
Access.setText("Access Token:" + tok);
}
catch (JSONException e)
{
e.printStackTrace();
}
getRequestToMisfit(json);
}
else
{
Toast.makeText(getApplicationContext(), "Network Error", Toast.LENGTH_SHORT).show();
pDialog.dismiss();
}
}
}
public void getRequestToMisfit(JSONObject json)
{
try
{
URL url;
HttpURLConnection connection;
String tok;
InputStream is;
BufferedReader rd;
String line;
String responseStr;
StringBuffer response;
String end_date;
String today;
String start_date;
Context context;
File file;
File file_value;
String filepath;
String filepath_value;
String result;
result = null;
context = MyApp.getContext();
connection = null;
rd = null;
tok = json.getString("access_token");
FileManagement fm = new FileManagement();
Calendar c = Calendar.getInstance();
String d = String.valueOf(c.get(Calendar.DAY_OF_MONTH));
String m = String.valueOf((c.get(Calendar.MONTH) + 1));
String y = String.valueOf(c.get(Calendar.YEAR));
today = y + "-" + m + "-" + d;
end_date = new String(today);
filepath = context.getFilesDir().getPath().toString() + "/sync_date.txt";
filepath_value = context.getFilesDir().getPath().toString() + "/sync_value.txt";
file = new File(filepath);
file_value = new File(filepath_value);
//IF YOU WANT TO SIMULATE AN OLD SYNC
//fm.writeToFile("2016-03-28", filepath);
//If you want to delete file that contain previous synchronisation date
//fm.deleteFile(file);
if ((start_date = fm.readFromFile(filepath, file)) == null)
start_date = new String(today);
//String dataUrl = "https://api.misfitwearables.com/move/resource/v1/user/me/profile?access_token=" + tok;
String dataUrl = "https://api.misfitwearables.com/move/resource/v1/user/me/activity/summary?start_date="+start_date+"&end_date="+end_date+"&access_token=" + tok;
System.out.println("=====> access_token <===== \n" + tok);
try
{
// Create connection
url = new URL(dataUrl);
setContentView(R.layout.activity_main);
TextView wv = (TextView) findViewById(R.id.misfit);
System.out.println("=====> url <===== \n" + url);
connection = (HttpURLConnection) url.openConnection();
connection.setRequestMethod("GET");
connection.setDoInput(true);
//if setDoOutput is set to "true", HttpUrlConnection will send POST request.
connection.setDoOutput(false);
// Send request
int status = connection.getResponseCode();
// Get Response
if(status >= HttpStatus.SC_BAD_REQUEST)
is = connection.getErrorStream();
else
is = connection.getInputStream();
rd = new BufferedReader(new InputStreamReader(is));
response = new StringBuffer();
while ((line = rd.readLine()) != null)
{
System.out.println("line = " + line);
response.append(line);
response.append('\r');
}
rd.close();
responseStr = response.toString();
JSONObject json_res = new JSONObject(responseStr);
System.out.println("JSON_OBJ" + json_res);
result = json_res.getString("points");
Log.d("Server response", responseStr);
System.out.println(responseStr);
System.out.println(start_date);
System.out.println(end_date);
System.out.println(result);
wv.setText("nombre de point :\ndu " + start_date + " au " + end_date + "\n" + "*** " + result + " ***");
}
catch(Exception e)
{
e.printStackTrace();
}
finally
{
if (connection != null)
connection.disconnect();
if (rd != null)
{
try
{
rd.close();
}
catch (IOException e)
{
e.printStackTrace();
}
}
}
if (!file.exists())
{
try
{
file.createNewFile();
file.mkdir();
}
catch (IOException e)
{
e.printStackTrace();
}
}
fm.writeToFile(today, filepath);
if (!file_value.exists())
{
try
{
file_value.createNewFile();
file_value.mkdir();
}
catch (IOException e)
{
e.printStackTrace();
}
}
fm.writeToFile(result, filepath_value);
System.out.println(fm.readFromFile(filepath_value, file));
Toast.makeText(context, "Result added to file ==> OK", Toast.LENGTH_LONG);
}
catch (JSONException e)
{
e.printStackTrace();
}
}
}
GetAccessToken
package com.example.vta.webview_example;
/*
* Find on
* http://stackoverflow.com/questions/22499066/invalid-client-in-jsonresponse-in-oauth2-android
*/
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.json.JSONException;
import org.json.JSONObject;
import android.util.Log;
public class GetAccessToken
{
static InputStream is = null;
static JSONObject jObj = null;
static String json = "";
List<NameValuePair> params = new ArrayList<NameValuePair>();
Map<String, String> mapn;
DefaultHttpClient httpClient;
HttpPost httpPost;
public GetAccessToken()
{
}
public JSONObject gettoken(String address,String token,String client_id,String client_secret,String redirect_uri,String grant_type)
{
// Making HTTP request
try
{
// DefaultHttpClient
httpClient = new DefaultHttpClient();
httpPost = new HttpPost(address);
params.add(new BasicNameValuePair("code", token));
params.add(new BasicNameValuePair("client_id", client_id));
params.add(new BasicNameValuePair("client_secret", client_secret));
params.add(new BasicNameValuePair("redirect_uri", redirect_uri));
params.add(new BasicNameValuePair("grant_type", grant_type));
httpPost.setHeader("Content-Type", "application/x-www-form-urlencoded");
httpPost.setEntity(new UrlEncodedFormEntity(params));
HttpResponse httpResponse = httpClient.execute(httpPost);
HttpEntity httpEntity = httpResponse.getEntity();
is = httpEntity.getContent();
}
catch (UnsupportedEncodingException e)
{
e.printStackTrace();
}
catch (ClientProtocolException e)
{
e.printStackTrace();
}
catch (IOException e)
{
e.printStackTrace();
}
try
{
BufferedReader reader;
StringBuilder sb;
String line;
reader = new BufferedReader(new InputStreamReader(is, "iso-8859-1"), 8);
sb = new StringBuilder();
line = null;
while ((line = reader.readLine()) != null)
{
System.out.println("=+=+=+> getAccessToken : line <+=+=+= \n" + line);
sb.append(line + "\n");
}
is.close();
json = sb.toString();
System.out.println("=+=+=+> getAccessToken : json <+=+=+= \n" + json);
Log.e("JSONStr", json);
}
catch (Exception e)
{
e.getMessage();
Log.e("Buffer Error", "Error converting result " + e.toString());
}
// Parse the String to a JSON Object
try
{
jObj = new JSONObject(json);
}
catch (JSONException e)
{
Log.e("JSON Parser", "Error parsing data " + e.toString());
}
// Return JSON String
return jObj;
}
}
The entire project :
https://github.com/v3t3a/android/tree/master/marvin_project/webview_example/app/src/main/java/com/example/vta/webview_example

load data from JSON ArrayList into spinner

I can't seem to figure this out, since im just a beginner with this android stuff.
My app gets the customer names from my WebAPI via JSON.
Now I am trying to load it into a spinner, but how can I load my JSON arraylist in there?
I tried loading custTable in it but its shows "com.jetron.jetronbuitendienst.CustomerDetailsTable....." in the spinner now.
My Code:
package com.jetron.jetronbuitendienst;
import android.annotation.TargetApi;
import android.os.AsyncTask;
import android.os.Build;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.widget.ArrayAdapter;
import android.widget.Spinner;
import org.json.JSONArray;
import org.json.JSONObject;
import java.util.ArrayList;
import java.util.List;
public class Gegevens extends Main {
String Naam;
Spinner spCustomers;
private ArrayList<CustomerDetailsTable> Klanten;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_gegevens);
new AsyncLoadCustDetails().execute();
spCustomers = (Spinner) findViewById(R.id.spKlanten);
}
/**
* Set up the {#link android.app.ActionBar}, if the API is available.
*/
protected class AsyncLoadCustDetails extends
AsyncTask<Void, JSONObject, ArrayList<CustomerDetailsTable>> {
ArrayList<CustomerDetailsTable> custTable = null;
#Override
protected ArrayList<CustomerDetailsTable> doInBackground(Void... params) {
// TODO Auto-generated method stub
RestAPI api = new RestAPI();
try {
JSONObject jsonObj = api.GetCustomerDetails();
JSONParser parser = new JSONParser();
custTable = parser.parseCustomerDetails(jsonObj);
Log.d("Customers: ", jsonObj.toString());
} catch (Exception e) {
// TODO Auto-generated catch block
Log.d("AsyncLoadCustDetails", e.getMessage());
}
return custTable;
}
#Override
protected void onPostExecute(ArrayList<CustomerDetailsTable> result) {
// TODO Auto-generated method stub
// Application of the Array to the Spinner
ArrayAdapter<CustomerDetailsTable> spinnerArrayAdapter = new ArrayAdapter<CustomerDetailsTable>(getApplicationContext(), android.R.layout.simple_spinner_item, custTable);
spinnerArrayAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); // The drop down view
spCustomers.setAdapter(spinnerArrayAdapter);
}
}
}
This is the jsonObj: D/Customers:: {"Successful":true,"Value":[{"Naam":"Google"},{"Naam":"Apple"},{"Naam":"AVN"},{"Naam":"Bemd"}]}

Well Since you are getting this:
D/Customers:: {"Successful":true,"Value":[{"Naam":"Google"},{"Naam":"Apple"},{"Naam":"AVN"},{"Naam":"Bemd"}]}
That implies that you are having an array that is called Value. So what you can do is this:
declare public variables :
private JSONObject jsonChildNode;
private JSONArray jsonMainNode;
private String name;
and then modify your code as:
try {
JSONObject jsonObj = api.GetCustomerDetails();
JSONParser parser = new JSONParser();
custTable = parser.parseCustomerDetails(jsonObj);
Log.d("Customers: ", jsonObj.toString());
jsonMainNode = jsonObj.optJSONArray("Value");
for (int i = 0; i < jsonMainNode.length(); i++) {
jsonChildNode = jsonMainNode.getJSONObject(i);
name = jsonChildNode.optString("Naam");
}
//and then you can add the name to a List<String> which will contain all the values of each item in the Value JSON Array.
} catch (Exception e) {
// TODO Auto-generated catch block
Log.d("AsyncLoadCustDetails", e.getMessage());
}
Hope it helps!!!

That 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();
}
});
}

Check API reference here.
ArrayAdapter uses the Object.toString() to fill the view.
Here in the code, with the Object CustomerDetailsTable does not override the toString() function, So it just print the name of the class.

How do I pass parameter to webservice and get json datas in listview

Hi (fresher to andorid)
I'm developing an android application which will use the webservice which should accept 1 parameter from the user and based on that the value is fetched datas from DB(sql server 2008) and bind that to android:LISTVIEW.
Without using the parameter my android application is working fine.But when i altered my webserservice to accept parameter and call it in android it is not displaying the result based on the given value instead of that it displays all values.
Here is my webservice code;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Services;
using System.Web.Script.Serialization;
using System.Web.Script.Services;
using System.Data;
using System.Data.SqlClient;
using System.Configuration;
using System.ComponentModel;
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[ToolboxItem(false)]
// To allow this Web Service to be called from script, using ASP.NET AJAX, uncomment the following line.
// [System.Web.Script.Services.ScriptService]
public class JService : System.Web.Services.WebService
{
public JService () {
//Uncomment the following line if using designed components
//InitializeComponent();
}
[WebMethod]
public void Cargonet(string jobno)
{
try
{
System.Web.Script.Serialization.JavaScriptSerializer serializer = new System.Web.Script.Serialization.JavaScriptSerializer();
SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["NSConstr"].ToString());
SqlCommand cmd = new SqlCommand();
//cmd.CommandText = "SELECT id,name,salary,country,city FROM EMaster where age = '" + jobno + "'";
cmd.CommandText = "SELECT [Id] as Id,[Status] as status ,[DateTime] as DateTime FROM [Attendance].[dbo].[cargo] WHERE JobNo= '" + jobno + "' ";
DataSet ds = new DataSet();
DataTable dt = new DataTable();
SqlDataAdapter da = new SqlDataAdapter(cmd);
da.SelectCommand.Connection = con;
da.Fill(dt);
con.Close();
List<Dictionary<string, object>> rows = new List<Dictionary<string, object>>();
Dictionary<string, object> row = null;
foreach (DataRow rs in dt.Rows)
{
row = new Dictionary<string, object>();
foreach (DataColumn col in dt.Columns)
{
row.Add(col.ColumnName, rs[col].ToString().Trim());
}
rows.Add(row);
}
this.Context.Response.ContentType = "application/json; charset=utf-8";
this.Context.Response.Write(serializer.Serialize(new { Cargo = rows }));
}
catch (Exception ex)
{
//return errmsg(ex);
}
}
}
Here is my android code(Main.java):
package com.example.cargotracking;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import org.apache.http.message.BasicNameValuePair;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import android.app.Activity;
import android.app.ProgressDialog;
import android.os.AsyncTask;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity extends Activity {
ListView list;
TextView Id;
TextView Status;
TextView DateTime;
Button Btngetdata;
String JobNo;
EditText editText1;
ArrayList<HashMap<String, String>> CargoTracklist = new ArrayList<HashMap<String, String>>();
//URL to get JSON Array
private static String url = "http://ip/testing/TrackId.asmx/Cargonet";
//JSON Node Names
private static final String TAG_CargoTrack = "Cargo";
private static final String TAG_Id = "Id";
private static final String TAG_Status = "Status";
private static final String TAG_DateTime = "DateTime";
JSONArray Cargo = null;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
CargoTracklist = new ArrayList<HashMap<String, String>>();
Btngetdata = (Button)findViewById(R.id.button1);
Btngetdata.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
new JSONParse().execute();
}
});
}
private class JSONParse extends AsyncTask<String, String, JSONObject> {
private ProgressDialog pDialog;
#Override
protected void onPreExecute() {
super.onPreExecute();
Status = (TextView)findViewById(R.id.textView2);
Id= (TextView)findViewById(R.id.textView1);
DateTime = (TextView)findViewById(R.id.textView3);
pDialog = new ProgressDialog(MainActivity.this);
pDialog.setMessage("Getting Data ...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(true);
pDialog.show();
}
#Override
protected JSONObject doInBackground(String... args) {
JSONParser jParser = new JSONParser();
List<BasicNameValuePair> params = new ArrayList<BasicNameValuePair>();
// List params = new ArrayList();
params.add(new BasicNameValuePair("JobNo","01"));
// Getting JSON from URL
JSONObject json = jParser.getJSONFromUrl(url,params);
return json;
}
#Override
protected void onPostExecute(JSONObject json) {
pDialog.dismiss();
try {
// Getting JSON Array from URL
Cargo = json.getJSONArray(TAG_CargoTrack);
for(int i = 0; i < Cargo.length(); i++){
JSONObject c = Cargo.getJSONObject(i);
// Storing JSON item in a Variable
String Status = c.getString(TAG_Status);
String Id = c.getString(TAG_Id);
String DateTime = c.getString(TAG_DateTime);
// Adding value HashMap key => value
HashMap<String, String> map = new HashMap<String, String>();
map.put(TAG_Status, Status);
map.put(TAG_Id, Id);
map.put(TAG_DateTime, DateTime);
CargoTracklist.add(map);
list=(ListView)findViewById(R.id.listView1);
ListAdapter adapter = new SimpleAdapter(MainActivity.this, CargoTracklist,
R.layout.listview,
new String[] { TAG_Status,TAG_Id, TAG_DateTime }, new int[] {
R.id.textView2,R.id.textView1, R.id.textView3});
list.setAdapter(adapter);
list.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
Toast.makeText(MainActivity.this, "You Clicked at "+CargoTracklist.get(+position).get("Id"), Toast.LENGTH_SHORT).show();
}
});
}
} catch (JSONException e) {
e.printStackTrace();
}
}
}
}
Here is my json parser code:
package com.example.cargotracking;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.util.List;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.json.JSONException;
import org.json.JSONObject;
import android.util.Log;
public class JSONParser {
static InputStream is = null;
static JSONObject jObj = null;
static String json = "";
// constructor
public JSONParser() {
}
//public JSONObject getJSONFromUrl(String url, List params) {
public JSONObject getJSONFromUrl(String url, List<BasicNameValuePair> params) {
// Making HTTP request
try {
// defaultHttpClient
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost(url);
httpPost.setEntity(new UrlEncodedFormEntity(params));
HttpResponse httpResponse = httpClient.execute(httpPost);
HttpEntity httpEntity = httpResponse.getEntity();
is = httpEntity.getContent();
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
try {
BufferedReader reader = new BufferedReader(new InputStreamReader(
is, "iso-8859-1"), 8);
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
is.close();
json = sb.toString();
} catch (Exception e) {
Log.e("Buffer Error", "Error converting result " + e.toString());
}
// try parse the string to a JSON object
try {
jObj = new JSONObject(json);
} catch (JSONException e) {
Log.e("JSON Parser", "Error parsing data " + e.toString());
}
// return JSON String
return jObj;
}
}
please help me to resolve this.
Thanks in advance