http request asynctask in onclicklistener

http request asynctask in onclicklistener - java

i want to start my Asynctask:
package com.androidhive.xmlparsing;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.NameValuePair;
import org.apache.http.StatusLine;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.conn.params.ConnManagerParams;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.params.HttpConnectionParams;
import org.apache.http.params.HttpParams;
import android.app.Notification;
import android.app.NotificationManager;
import android.content.Context;
import android.os.AsyncTask;
import android.util.Log;
public class onoff extends AsyncTask<String, Void, String> {
private static final int REGISTRATION_TIMEOUT = 3 * 1000;
private static final int WAIT_TIMEOUT = 30 * 1000;
private final HttpClient httpclient = new DefaultHttpClient();
final HttpParams params = httpclient.getParams();
HttpResponse response;
private String content = null;
private boolean error = false;
private Context mContext;
private int NOTIFICATION_ID = 1;
private Notification mNotification;
private NotificationManager mNotificationManager;
public onoff(Context context){
this.mContext = context;
//Get the notification manager
mNotificationManager = (NotificationManager) mContext.getSystemService(Context.NOTIFICATION_SERVICE);
}
protected void onPreExecute() {
createNotification("Data download is in progress","");
}
protected String doInBackground(String... urls) {
String URL = null;
String param1 = null;
String param2 = null;
String param3 = null;
try {
//URL passed to the AsyncTask
URL = urls[0];
param1 = urls[1];
param2 = urls[2];
param3 = urls[3];
HttpConnectionParams.setConnectionTimeout(params, REGISTRATION_TIMEOUT);
HttpConnectionParams.setSoTimeout(params, WAIT_TIMEOUT);
ConnManagerParams.setTimeout(params, WAIT_TIMEOUT);
HttpPost httpPost = new HttpPost(URL);
//Any other parameters you would like to set
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(3);
nameValuePairs.add(new BasicNameValuePair("token",param1));
nameValuePairs.add(new BasicNameValuePair("deviceid",param2));
nameValuePairs.add(new BasicNameValuePair("actionid",param3));
httpPost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
//Response from the Http Request
response = httpclient.execute(httpPost);
StatusLine statusLine = response.getStatusLine();
//Check the Http Request for success
if(statusLine.getStatusCode() == HttpStatus.SC_OK){
ByteArrayOutputStream out = new ByteArrayOutputStream();
response.getEntity().writeTo(out);
out.close();
content = out.toString();
Log.d("test", content);
}
else{
//Closes the connection.
Log.w("HTTP1:",statusLine.getReasonPhrase());
response.getEntity().getContent().close();
throw new IOException(statusLine.getReasonPhrase());
}
} catch (ClientProtocolException e) {
Log.w("HTTP2:",e );
content = e.getMessage();
error = true;
cancel(true);
} catch (IOException e) {
Log.w("HTTP3:",e );
content = e.getMessage();
error = true;
cancel(true);
}catch (Exception e) {
Log.w("HTTP4:",e );
content = e.getMessage();
error = true;
cancel(true);
}
return content;
}
protected void onCancelled() {
createNotification("Es ist ein Problem aufgetreten(2)!",content);
}
protected void onPostExecute(String content) {
if (error) {
createNotification("Es ist ein Problem aufgetreten(1)!",content);
} else {
createNotification("Gerät erfolgreich geschaltet(3)!","");
}
}
private void createNotification(String contentTitle, String contentText) {
//Build the notification using Notification.Builder
Notification.Builder builder = new Notification.Builder(mContext)
.setSmallIcon(android.R.drawable.stat_sys_download)
.setAutoCancel(true)
.setContentTitle(contentTitle)
.setContentText(contentText);
//Get current notification
mNotification = builder.getNotification();
//Show the notification
mNotificationManager.notify(NOTIFICATION_ID, mNotification);
}
}
in a onclicklistener on a ListActivity:
package com.androidhive.xmlparsing;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
public class SingleMenuItemActivity extends Activity {
// XML node keys
static final String KEY_NAME = "name";
static final String KEY_COST = "cost";
static final String KEY_DESC = "description";
static final String KEY_ID = "deviceid";
static final String KEY_texton = "texton";
static final String KEY_textoff = "textoff";
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.single_list_item);
// getting intent data
Intent in = getIntent();
// Get XML values from previous intent
String name = in.getStringExtra(KEY_NAME);
String cost = in.getStringExtra(KEY_COST);
String description = in.getStringExtra(KEY_DESC);
String deviceid = in.getStringExtra(KEY_ID);
String on = in.getStringExtra(KEY_texton);
String off = in.getStringExtra(KEY_textoff);
// Displaying all values on the screen
TextView lblName = (TextView) findViewById(R.id.name_label);
TextView lblCost = (TextView) findViewById(R.id.cost_label);
TextView lblDesc = (TextView) findViewById(R.id.description_label);
TextView lblid = (TextView) findViewById(R.id.id_label);
// TextView lblon = (Button) findViewById(R.id.on);
// TextView lbloff = (Button) findViewById(R.id.off);
Button lblon = (Button)findViewById(R.id.on);
lblon.getText().toString();
lblon.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
String[] url={"http://url.de/", "url","/" + KEY_ID,"/" + KEY_COST};
new onoff(this).execute(url);
}
});
Button lbloff = (Button)findViewById(R.id.off);
lbloff.getText().toString();
lbloff.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
}
});
lblName.setText(name);
lblCost.setText(cost);
lblDesc.setText(description);
lblid.setText(deviceid);
lblon.setText(on);
lbloff.setText(off);
}
}
the xmlparser:
package com.androidhive.xmlparsing;
import java.io.IOException;
import java.io.StringReader;
import java.io.UnsupportedEncodingException;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.util.EntityUtils;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import android.util.Log;
public class XMLParser {
// constructor
public XMLParser() {
}
/**
* Getting XML from URL making HTTP request
* #param url string
* */
public String getXmlFromUrl(String url) {
String xml = null;
try {
// defaultHttpClient
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost(url);
HttpResponse httpResponse = httpClient.execute(httpPost);
HttpEntity httpEntity = httpResponse.getEntity();
xml = EntityUtils.toString(httpEntity);
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
// return XML
return xml;
}
/**
* Getting XML DOM element
* #param XML string
* */
public Document getDomElement(String xml){
Document doc = null;
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
try {
DocumentBuilder db = dbf.newDocumentBuilder();
InputSource is = new InputSource();
is.setCharacterStream(new StringReader(xml));
doc = db.parse(is);
} catch (ParserConfigurationException e) {
Log.e("Error: ", e.getMessage());
return null;
} catch (SAXException e) {
Log.e("Error: ", e.getMessage());
return null;
} catch (IOException e) {
Log.e("Error: ", e.getMessage());
return null;
}
return doc;
}
/** Getting node value
* #param elem element
*/
public final String getElementValue( Node elem ) {
Node child;
if( elem != null){
if (elem.hasChildNodes()){
for( child = elem.getFirstChild(); child != null; child = child.getNextSibling() ){
if( child.getNodeType() == Node.TEXT_NODE ){
return child.getNodeValue();
}
}
}
}
return "";
}
/**
* Getting node value
* #param Element node
* #param key string
* */
public String getValue(Element item, String str) {
NodeList n = item.getElementsByTagName(str);
return this.getElementValue(n.item(0));
}
}
but i get an erron on onoff(this)? The constructor onoff is undefined
i want to start a http request when the button is clicked.
can someone help me?

In new onoff(this), this refers to the instance of OnClickListener.
Change
new onoff(this).execute(url);
with
new onoff(SingleMenuItemActivity.this).execute(url);

Related

Android: How to retrieve a single data from a web server and display it to a textview?

i want to display an employee last clock-in from a web server. The problem is i'm not really sure how to retrieve a single last clock-in and display it to a textview. Here is my code, JSONParser.java:
package com.example.win7.simpleloginapp;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.net.SocketException;
import java.util.List;
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.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.utils.URLEncodedUtils;
import org.apache.http.conn.ConnectTimeoutException;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.params.BasicHttpParams;
import org.apache.http.params.HttpConnectionParams;
import org.apache.http.params.HttpParams;
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 = "";
int timeout=10000; //in milisecond = 10 detik
// constructor
public JSONParser() {
//timeout = new Values().gettimeout();
}
// function get json from url
// by making HTTP POST or GET mehtod
public JSONObject makeHttpRequest(String url, String method,
List<NameValuePair> params) {
// Making HTTP request
try {
HttpParams httpParameters = new BasicHttpParams();
HttpConnectionParams.setConnectionTimeout(httpParameters, timeout);
HttpConnectionParams.setSoTimeout(httpParameters, timeout);
// check for request method
if(method == "POST"){
// request method is POST
// defaultHttpClient
DefaultHttpClient httpClient = new DefaultHttpClient(httpParameters);
HttpPost httpPost = new HttpPost(url);
httpPost.setEntity(new UrlEncodedFormEntity(params));
HttpResponse httpResponse = httpClient.execute(httpPost);
HttpEntity httpEntity = httpResponse.getEntity();
is = httpEntity.getContent();
}else if(method == "GET"){
// request method is GET
DefaultHttpClient httpClient = new DefaultHttpClient(httpParameters);
String paramString = URLEncodedUtils.format(params, "utf-8");
url += "?" + paramString;
HttpGet httpGet = new HttpGet(url);
HttpResponse httpResponse = httpClient.execute(httpGet);
HttpEntity httpEntity = httpResponse.getEntity();
is = httpEntity.getContent();
}
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (SocketException ste)
{
Log.e("Timeout Exception: ", ste.toString());
}
catch (ConnectTimeoutException e)
{
Log.e("Timeout Exception: ", e.toString());
}
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;
}
}
ServerRequest.java:
package com.example.win7.simpleloginapp;
import android.app.Activity;
import android.app.Application;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.AsyncTask;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.provider.Settings;
import android.util.Log;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
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.impl.io.HttpRequestParser;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.params.BasicHttpParams;
import org.apache.http.params.HttpConnectionParams;
import org.apache.http.params.HttpParams;
import org.apache.http.util.EntityUtils;
import org.json.JSONArray;
import org.json.JSONObject;
import java.util.ArrayList;
public class ServerRequest {
ProgressDialog progressDialog;
public static final int CONNECTION_TIMEOUT = 1000 * 15;
public static final String SERVER_ADDRESS = ".................net";
final static String TAG_USER = "user";
private Context mContext;
SharedPreferences sharedPreferences;
public static final String mypreference = "mypref";
public static final String NameStr = "Name";
JSONArray user;
JSONParser jsonParser = new JSONParser();
public ServerRequest(Context context) {
progressDialog = new ProgressDialog(context);
progressDialog.setCancelable(false);
progressDialog.setTitle("Processing..");
progressDialog.setMessage("Please Wait....");
mContext = context;
}
public void storeUserDataInBackground(user user, GetUserCallback userCallback) {
progressDialog.show();
new StoreUserDataAsyncTask(user, userCallback).execute();
}
public void fetchUserDataInBackground(user user, GetUserCallback callBack) {
progressDialog.show();
new fetchUserDataAsyncTask(user, callBack).execute();
}
public class StoreUserDataAsyncTask extends AsyncTask<Void, Void, Void> {
user user;
GetUserCallback userCallback;
public StoreUserDataAsyncTask(user user, GetUserCallback userCallback) {
this.user = user;
this.userCallback = userCallback;
}
#Override
protected Void doInBackground(Void... params) {
ArrayList<NameValuePair> dataToSend = new ArrayList<>();
dataToSend.add(new BasicNameValuePair("username", user.username));
dataToSend.add(new BasicNameValuePair("password", user.password));
HttpParams httpRequestParams = new BasicHttpParams();
HttpConnectionParams.setConnectionTimeout(httpRequestParams, CONNECTION_TIMEOUT);
HttpConnectionParams.setSoTimeout(httpRequestParams, CONNECTION_TIMEOUT);
HttpClient client = new DefaultHttpClient(httpRequestParams);
HttpPost post = new HttpPost("http://.........................../register.php");
try {
post.setEntity(new UrlEncodedFormEntity(dataToSend));
client.execute(post);
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
#Override
protected void onPostExecute(Void aVoid) {
progressDialog.dismiss();
userCallback.done(null);
super.onPostExecute(aVoid);
}
}
public class fetchUserDataAsyncTask extends AsyncTask< Void, Void, user> {
user user;
GetUserCallback userCallback;
public fetchUserDataAsyncTask(user user, GetUserCallback userCallback) {
this.user = user;
this.userCallback = userCallback;
}
#Override
protected user doInBackground(Void... params) {
ArrayList<NameValuePair> dataToSend = new ArrayList<>();
dataToSend.add(new BasicNameValuePair("username", user.username));
dataToSend.add(new BasicNameValuePair("password", user.password));
HttpParams httpRequestParams = new BasicHttpParams();
HttpConnectionParams.setConnectionTimeout(httpRequestParams, CONNECTION_TIMEOUT);
HttpConnectionParams.setSoTimeout(httpRequestParams, CONNECTION_TIMEOUT);
HttpClient client = new DefaultHttpClient(httpRequestParams);
HttpPost post = new HttpPost("................................../fetchUserData.php");
user returnedUser = null;
try {
post.setEntity(new UrlEncodedFormEntity(dataToSend));
HttpResponse httpResponse = client.execute(post);
HttpEntity entity = httpResponse.getEntity();
String result = EntityUtils.toString(entity);
JSONObject jObject = new JSONObject(result);
if(jObject.length()==0)
{
returnedUser = null;
}
else
{
String Name1 = jObject.getString("Name");
//String Name1 = "ekin";
storeData(Name1);
//Name1 = "hello";
returnedUser = new user(user.username, user.password);
}
} catch (Exception e) {
e.printStackTrace();
}
return returnedUser;
}
#Override
protected void onPostExecute(user returnedUser) {
progressDialog.dismiss();
userCallback.done(returnedUser);
super.onPostExecute(returnedUser);
}
}
public SharedPreferences getSharedPref(){
return mContext.getSharedPreferences(mContext.getPackageName(), Context.MODE_PRIVATE);
}
public void storeData(String Name1) {
getSharedPref().edit().putString("data", Name1).apply();
}
public String getData(){
return getSharedPref().getString("data", "");
}
}
And here is the MainActivity.java:
package com.example.win7.simpleloginapp;
import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.pm.ActivityInfo;
import android.graphics.Color;
import android.graphics.Typeface;
import android.graphics.drawable.ColorDrawable;
import android.location.Location;
import android.location.LocationManager;
import android.os.AsyncTask;
import android.support.v7.app.ActionBar;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.text.InputFilter;
import android.util.Log;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.widget.AnalogClock;
import android.widget.Button;
import android.widget.DigitalClock;
import android.widget.EditText;
import android.widget.LinearLayout;
import android.widget.ProgressBar;
import android.widget.TextView;
import android.widget.Toast;
import org.apache.http.NameValuePair;
import org.apache.http.message.BasicNameValuePair;
import org.json.JSONArray;
import org.json.JSONObject;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Date;
import java.util.List;
import org.json.JSONException;
import android.app.AlertDialog;
import android.location.LocationListener;
import com.example.win7.simpleloginapp.model.JSONParser2;
import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.MapFragment;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.Marker;
import com.google.android.gms.maps.model.MarkerOptions;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.graphics.Color;
import android.os.Bundle;
import android.view.Gravity;
import android.widget.RelativeLayout;
import android.widget.RelativeLayout.LayoutParams;
import android.widget.TextView;
public class MainActivity extends ActionBarActivity {
Button button_logout;
TextView etUsername , etName, lastTimeDisp, lastDateDisp; //baru
UserLocalStore userLocalStore;
Button clockIN1, clockOUT1;
Date date = new Date();
String AndroidId;
String username;
double longitude;
double latitude;
private TextView locationText;
private TextView addressText;
private GoogleMap map;
private LocationManager locationMangaer = null;
private LocationListener locationListener = null;
private Button btnGetLocation = null;
private EditText editLocation = null;
private ProgressBar pb = null;
private static final String TAG = "Debug";
private Boolean flag = false;
JSONArray user = null;
JSONParser jsonParser = new JSONParser();
public static final String TAG_SUCCESS = "success";
public static final String TAG_USER = "user";
public static final String TAG_STAFF_ID = "staffID";
public static final String TAG_DATE = "date";
public static final String TAG_TIME = "time";
public static final String TAG_LONG = "longitude";
public static final String TAG_LAT = "latitude";
private Button scannerButton;
private Button camButton;
String staffIDStr, dateStr, timeStr, latitudeStr, longitudeStr;
String user_name;
SharedPreferences sharedPreferences;
public static final String mypreference = "MyPrefs" ;
public static final String NameStr = "Name";
ActionBar actionbar;
TextView textview;
LayoutParams layoutparams;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
ActionBarTitleGravity();
LocationManager locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);
if (locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER)){
Toast.makeText(this, "GPS is Enabled in your device", Toast.LENGTH_SHORT).show();
}else{
showGPSDisabledAlertToUser();
}
ActionBar actionBar = getSupportActionBar();
actionBar.setBackgroundDrawable(new ColorDrawable(Color.parseColor("#3B5999")));
actionBar.setDisplayUseLogoEnabled(true);
actionBar.setDisplayShowHomeEnabled(true);
setContentView(R.layout.activity_main);
etUsername = (TextView) findViewById(R.id.etUsername);
etName = (TextView) findViewById(R.id.etName);
lastTimeDisp = (TextView) findViewById(R.id.lastTimeDisp); //baru
lastDateDisp = (TextView) findViewById(R.id.lastDateDisp); //baru
button_logout = (Button) findViewById(R.id.bLogout);
AnalogClock ac = (AnalogClock) findViewById(R.id.analogClock1);
DigitalClock dc = (DigitalClock) findViewById(R.id.digitalClock1);
clockIN1 = (Button) findViewById(R.id.clockIN);
clockOUT1 = (Button) findViewById(R.id.clockOUT);
etUsername.setFilters(new InputFilter[]{new InputFilter.AllCaps()});
etName.setFilters(new InputFilter[]{new InputFilter.AllCaps()});
super.onPause();
SharedPreferences prefs = getSharedPreferences("X", MODE_PRIVATE);
SharedPreferences.Editor editor = prefs.edit();
editor.putString("lastActivity", getClass().getName());
editor.apply(); //baru - tukar commit() ke apply()
ServerRequest serverRequest = new ServerRequest(getApplicationContext());
ServerRequest2 serverRequest2 = new ServerRequest2(getApplicationContext());
Log.d("", "The value is : " + serverRequest.getData());
String username1 = serverRequest.getData();
String timeL = serverRequest2.getData();
String dateL = serverRequest2.getData();
etName.setText(username1);
lastTimeDisp.setText(timeL); //baru
lastDateDisp.setText(dateL); //baru
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
locationText = (TextView) findViewById(R.id.location);
addressText = (TextView) findViewById(R.id.address);
replaceMapFragment();
clockIN1.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
//date.setTime(System.currentTimeMillis()); //set to current time
clockIN1.setClickable(false);
Calendar c = Calendar.getInstance();
dateStr = c.get(Calendar.YEAR) + "-" + c.get(Calendar.MONTH) + "-" + c.get(Calendar.DAY_OF_MONTH);
timeStr = c.get(Calendar.HOUR_OF_DAY) + ":" + c.get(Calendar.MINUTE);
staffIDStr = etUsername.getText().toString();
new createClockIn().execute();
clockIN1.setEnabled(false);
clockIN1.setClickable(false);
}
});
userLocalStore = new UserLocalStore(this);
}
private void ActionBarTitleGravity() {
actionbar = getSupportActionBar();
textview = new TextView(getApplicationContext());
layoutparams = new RelativeLayout.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT);
textview.setLayoutParams(layoutparams);
textview.setText("MysysESS");
textview.setTextColor(Color.WHITE);
textview.setGravity(Gravity.CENTER);
textview.setTextSize(25);
textview.setTypeface(Typeface.DEFAULT_BOLD);
actionbar.setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM);
actionbar.setCustomView(textview);
}
class createClockIn extends AsyncTask<String, String, String> {
ProgressDialog dialog;
#Override
protected void onPreExecute() {
super.onPreExecute();
dialog = new ProgressDialog(MainActivity.this);
dialog.setMessage("LOADING.");
dialog.setIndeterminate(false);
dialog.setCancelable(false);
dialog.show();
}
protected String doInBackground(String... args) {
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair(TAG_STAFF_ID, staffIDStr));
params.add(new BasicNameValuePair(TAG_DATE, dateStr));
params.add(new BasicNameValuePair(TAG_TIME, timeStr));
params.add(new BasicNameValuePair(TAG_LONG, longitudeStr));
params.add(new BasicNameValuePair(TAG_LAT, latitudeStr));
JSONObject json = jsonParser.makeHttpRequest("http://.........................../createClockIN.php", "POST", params);
try {
int success = json.getInt(TAG_SUCCESS);
if (success == 1) {
finish();
} else {
return "gagal_database";
}
} catch (JSONException e)
{
e.printStackTrace();
return "gagal_koneksi_or_exception";
}
return "sukses";
}
protected void onPostExecute(String result) {
super.onPostExecute(result);
if (result.equalsIgnoreCase("gagal_database")) {
dialog.dismiss();
Toast.makeText(MainActivity.this, "There is a problem , check your connection DB!", Toast.LENGTH_SHORT).show();
} else if (result.equalsIgnoreCase("gagal_koneksi_or_exception")) {
dialog.dismiss();
Toast.makeText(MainActivity.this, "There is a problem , check your connection!", Toast.LENGTH_SHORT).show();
} else if (result.equalsIgnoreCase("sukses")) {
dialog.dismiss();
Toast.makeText(MainActivity.this, "Lets work!", Toast.LENGTH_SHORT).show();
String staffID1 = etUsername.getText().toString();
Intent intent = new Intent(getApplicationContext(), MainActivity.class);
intent.putExtra("username", staffID1);
startActivity(intent);
}
}
}
//on start function login function
#Override
protected void onStart() {
super.onStart();
if (authenticate() == true)
displayUserDetails();
else
startActivity(new Intent(MainActivity.this, login.class));
}
private boolean authenticate() {
return userLocalStore.getUserLoggedIn();
}
private void displayUserDetails() {
user user = userLocalStore.getLoggedInUser();
etUsername.setText(user.username);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater menuInflater = getMenuInflater();
menuInflater.inflate(R.menu.menu_main, menu);
return super.onCreateOptionsMenu(menu);
}
public boolean onOptionsItemSelected(MenuItem item) {
LinearLayout main_view = (LinearLayout) findViewById(R.id.main_view);
switch (item.getItemId()) {
case R.id.logout:
userLocalStore.clearUserData();
startActivity(new Intent(this, login.class));
finish();
return true;
case R.id.history:
if (item.isChecked())
item.setChecked(false);
else
item.setChecked(true);
String username1 = etUsername.getText().toString();
Intent intent = new Intent(getApplicationContext(), ListHistory.class);
intent.putExtra("username", username1);
startActivity(intent);
return true;
case R.id.location:
if (item.isChecked())
item.setChecked(false);
else
item.setChecked(true);
String username2 = etUsername.getText().toString();
Intent intent2 = new Intent(getApplicationContext(), LocationActivity.class);
intent2.putExtra("username", username2);
startActivity(intent2);
return true;
default:
return super.onOptionsItemSelected(item);
}
}
#Override
public void onBackPressed() {
// super.onBackPressed(); // Comment this super call to avoid calling finish()
}
public void callBackDataFromAsyncTask(String address) {
addressText.setText(address);
}
private void replaceMapFragment() {
map = ((MapFragment) getFragmentManager().findFragmentById(R.id.map))
.getMap();
View frag = findViewById(R.id.map);
frag.setVisibility(View.INVISIBLE);
map.getUiSettings().setZoomGesturesEnabled(true);
map.setMapType(GoogleMap.MAP_TYPE_NORMAL);
map.setMyLocationEnabled(true);
map.setOnMyLocationChangeListener(myLocationChangeListener());
}
private GoogleMap.OnMyLocationChangeListener myLocationChangeListener() {
return new GoogleMap.OnMyLocationChangeListener() {
#Override
public void onMyLocationChange(Location location) {
LatLng loc = new LatLng(location.getLatitude(), location.getLongitude());
double longitude = location.getLongitude();
double latitude = location.getLatitude();
Marker marker;
marker = map.addMarker(new MarkerOptions().position(loc));
map.animateCamera(CameraUpdateFactory.newLatLngZoom(loc, 16.0f));
locationText.setText("You are at [" + longitude + " ; " + latitude + " ]");
longitudeStr = Double.toString(longitude);
latitudeStr = Double.toString(latitude);
if ((longitude > 101.650000 && longitude < 101.670000 && latitude > 2.925000 && latitude < 2.927000) ||
(longitude > 101.640000 && longitude < 101.660000 && latitude > 2.900000 && latitude < 2.920000) ||
(longitude > 101.680000 && longitude < 101.700000 && latitude > 3.140000 && latitude < 3.170000) ||
(longitude > 103.620000 && longitude < 103.640000 && latitude > 1.640000 && latitude < 1.660000))
{
clockIN1.setEnabled(true);
scannerButton.setEnabled(true);
camButton.setEnabled(true);
} else {
Toast.makeText(MainActivity.this, "YOU ARE NOT IN THE OFFICE!", Toast.LENGTH_SHORT).show();
clockIN1.setEnabled(false);
scannerButton.setEnabled(false);
camButton.setEnabled(false);
}
new GetAddressTask(MainActivity.this).execute(String.valueOf(latitude), String.valueOf(longitude));
}
};
}
private void showGPSDisabledAlertToUser()
{
AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(this);
alertDialogBuilder.setMessage("GPS is disabled in your device. Would you like to enable it?")
.setCancelable(false)
.setPositiveButton("Settings your GPS",
new DialogInterface.OnClickListener()
{
public void onClick(DialogInterface dialog, int id)
{
Intent callGPSSettingIntent = new Intent(android.provider.Settings.ACTION_LOCATION_SOURCE_SETTINGS);
startActivity(callGPSSettingIntent);
}
});
alertDialogBuilder.setNegativeButton("Cancel",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
dialog.cancel();
}
});
AlertDialog alert = alertDialogBuilder.create();
alert.show();
}
}
For your information, I have to retrieve the data from another web server url(http://........................./lastClock.php) and the name of the entity from the table is dclkrec(represent date) and cclktime(represent time).
Any help from you guys would be very appreciated. Thank you in advanced.

You are doing a lot of wheel reinvention here. There are tools for networking and serialising/deserialising data.
For networking I can recommend Retrofit
Working with JSON objects Gson
Try these and your life will be much easier. Trust me. It is worth investing a little time.

null pointer exception error in http POST request JSON object

I am doing android coding and sending a http POST request using httpClient. and it is giving me a null point expception error at the line
httpEntity = httpResponse.getEntity();
i used log cat and found that my code was stopping at the line mentioned above. please help me out with it. thanks in advance.
my code is for the establishment of http client is in the file serviceHandler:
package com.example.manumaheshwari.vigo;
/**
* Created by ManuMaheshwari on 30/06/15.
*/
import android.util.Log;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.List;
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.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.utils.URLEncodedUtils;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.protocol.HTTP;
import org.apache.http.util.EntityUtils;
public class ServiceHandler {
static String response = null;
public final static int GET = 1;
public final static int POST = 2;
StringBuilder sb;
public ServiceHandler() {
}
/**
* Making service call
* #url - url to make request
* #method - http request method
* */
public String makeServiceCall(String url, int method) {
return this.makeServiceCall(url, method, null);
}
/**
* Making service call
* #url - url to make request
* #method - http request method
* #params - http request params
* */
public String makeServiceCall(String url, int method, List<NameValuePair> params) {
try {
// http client
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpEntity httpEntity = null;
HttpResponse httpResponse = null;
// Checking http request method type
if (method == POST) {
HttpPost httpPost = new HttpPost(url);
httpPost.setHeader(HTTP.CONTENT_TYPE, "application/x-www-form-urlencoded ");
if (params != null) {
try {
httpPost.setEntity(new UrlEncodedFormEntity(params, "utf-8"));
}
catch (UnsupportedEncodingException e) {
// writing error to Log
e.printStackTrace();
}
// Making HTTP Request
try {
HttpResponse response = httpClient.execute(httpPost);
// writing response to log
Log.d("Http Response: ", response.toString());
} catch (ClientProtocolException e) {
// writing exception to log
e.printStackTrace();
} catch (IOException e) {
// writing exception to log
e.printStackTrace();
}
}
} else if (method == GET) {
// appending params to url
if (params != null) {
String paramString = URLEncodedUtils.format(params, "utf-8");
url += "?" + paramString;
}
HttpGet httpGet = new HttpGet(url);
httpResponse = httpClient.execute(httpGet);
}
httpEntity = httpResponse.getEntity();
response = EntityUtils.toString(httpEntity);
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return response;
}
}
and the code for my main activity is as follows:
package com.example.manumaheshwari.vigo;
import android.app.ListActivity;
import android.app.ProgressDialog;
import android.os.AsyncTask;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import org.apache.http.NameValuePair;
import org.apache.http.message.BasicNameValuePair;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
public class MainActivity extends ListActivity {
private ProgressDialog pDialog;
// URL to get pending rides JSON
private static String url = "http://128.199.206.145/vigo/v1/displayalldrivers";
// JSON Node names
private static final String TAG_SOURCE = "source";
private static final String TAG_DESTINATION = "destination";
private static final String TAG_DRIVER_ID = "driver_id";
private static final String TAG_NAME = "name";
// pending rides JSONArray
JSONArray pendingRides = null;
// Hashmap for ListView
ArrayList<HashMap<String, String>> pendingRidesList;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
pendingRidesList = new ArrayList<HashMap<String, String>>();
ListView lv = getListView();
// Calling async task to get json
new GetRides().execute();
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
/**
* Async task class to get json by making HTTP call
* */
private class GetRides extends AsyncTask<Void, Void, Void> {
#Override
protected void onPreExecute() {
super.onPreExecute();
// Showing progress dialog
pDialog = new ProgressDialog(MainActivity.this);
pDialog.setMessage("Please wait...");
pDialog.setCancelable(false);
pDialog.show();
}
#Override
protected Void doInBackground(Void... arg0) {
// Creating service handler class instance
ServiceHandler sh = new ServiceHandler();
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
nameValuePairs.add(new BasicNameValuePair("contractor_id", "1"));
// Making a request to url and getting response
String jsonStr = sh.makeServiceCall(url, ServiceHandler.POST, nameValuePairs);
Log.d("Response: " , "> " + jsonStr);
if (jsonStr != null) {
try {
JSONObject jsonObj = new JSONObject(jsonStr);
// Getting JSON Array node
pendingRides = jsonObj.getJSONArray("driver");
// looping through All Contacts
for (int i = 0; i < pendingRides.length(); i++) {
JSONObject c = pendingRides.getJSONObject(i);
String source = c.getString(TAG_NAME);
String destination = c.getString(TAG_DRIVER_ID);
// tmp hashmap for single contact
HashMap<String, String> pendingRide = new HashMap<String, String>();
// adding each child node to HashMap key => value
pendingRide.put(TAG_NAME, source);
pendingRide.put(TAG_DRIVER_ID, destination);
// adding pending ride to pending ride list
pendingRidesList.add(pendingRide);
}
} catch (JSONException e) {
e.printStackTrace();
}
} else {
Log.e("ServiceHandler", "Couldn't get any data from the url");
}
return null;
}
#Override
protected void onPostExecute(Void result) {
super.onPostExecute(result);
// Dismiss the progress dialog
if (pDialog.isShowing())
pDialog.dismiss();
/**
* Updating parsed JSON data into ListView
* */
ListAdapter adapter = new SimpleAdapter(
MainActivity.this, pendingRidesList,
R.layout.list_view, new String[] { TAG_SOURCE, TAG_DESTINATION,}, new int[] { R.id.source,R.id.destination});
setListAdapter(adapter);
}
}
}

It seems that httpResponse is null,because in POST method you didn't assign any value to it.So in POST method,change
HttpResponse response = httpClient.execute(httpPost);
// writing response to log
Log.d("Http Response: ", response.toString());
to
httpResponse = httpClient.execute(httpPost);
// writing response to log
Log.d("Http Response: ", httpResponse.toString());

How can I parse xml file from url

I try to get currency from this url http://www.ecb.europa.eu/stats/eurofxref/eurofxref-daily.xml. But my parsing doesn't work. This is my code.
http://www.ecb.europa.eu/stats/exchange/eurofxref/html/index.en.html
AndroidXMLParsingActivit.java
package com.androidhive.xmlparsing;
import java.util.ArrayList;
import java.util.HashMap;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NodeList;
import android.app.ListActivity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.TextView;
public class AndroidXMLParsingActivity extends ListActivity {
// All static variables
//static final String URL = "http://api.androidhive.info/pizza/?format=xml";
static final String URL = "http://www.ecb.europa.eu/stats/eurofxref/eurofxref-daily.xml";
// XML node keys
//static final String KEY_ITEM = "item"; // parent node
static final String KEY_ITEM = "Cube"; // parent node
static final String KEY_ID = "currency";
static final String KEY_NAME = "rate";
/*static final String KEY_ID = "id";
static final String KEY_NAME = "name";
static final String KEY_COST = "cost";
static final String KEY_DESC = "description";*/
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
ArrayList<HashMap<String, String>> menuItems = new ArrayList<HashMap<String, String>>();
XMLParser parser = new XMLParser();
String xml = parser.getXmlFromUrl(URL); // getting XML
Document doc = parser.getDomElement(xml); // getting DOM element
NodeList nl = doc.getElementsByTagName(KEY_ITEM);
// looping through all item nodes <item>
for (int i = 0; i < nl.getLength(); i++) {
// creating new HashMap
HashMap<String, String> map = new HashMap<String, String>();
Element e = (Element) nl.item(i);
// adding each child node to HashMap key => value
map.put(KEY_ID, parser.getValue(e, KEY_ID));
map.put(KEY_NAME, parser.getValue(e, KEY_NAME));
//map.put(KEY_COST, "Rs." + parser.getValue(e, KEY_COST));
//map.put(KEY_DESC, parser.getValue(e, KEY_DESC));
// adding HashList to ArrayList
menuItems.add(map);
}
// Adding menuItems to ListView
ListAdapter adapter = new SimpleAdapter(this, menuItems,
R.layout.list_item,
//new String[] { KEY_NAME, KEY_DESC, KEY_COST }, new int[] {
new String[] { KEY_NAME, KEY_ID, KEY_ID }, new int[] {
R.id.name, R.id.desciption, R.id.cost });
setListAdapter(adapter);
// selecting single ListView item
ListView lv = getListView();
lv.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
// getting values from selected ListItem
String name = ((TextView) view.findViewById(R.id.name)).getText().toString();
String cost = ((TextView) view.findViewById(R.id.cost)).getText().toString();
String description = ((TextView) view.findViewById(R.id.desciption)).getText().toString();
// Starting new intent
Intent in = new Intent(getApplicationContext(), SingleMenuItemActivity.class);
in.putExtra(KEY_ID, cost);
in.putExtra(KEY_NAME, name);
//in.putExtra(KEY_COST, cost);
//in.putExtra(KEY_DESC, description);
startActivity(in);
}
});
}
}
SingleMenuItemActivity.java
package com.androidhive.xmlparsing;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.widget.TextView;
public class SingleMenuItemActivity extends Activity {
// XML node keys
static final String KEY_ID = "currency";
static final String KEY_NAME = "rate";
/*static final String KEY_NAME = "name";
static final String KEY_COST = "cost";
static final String KEY_DESC = "description";*/
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.single_list_item);
// getting intent data
Intent in = getIntent();
// Get XML values from previous intent
String name = in.getStringExtra(KEY_NAME);
String cost = in.getStringExtra(KEY_ID);
/*String cost = in.getStringExtra(KEY_COST);
String description = in.getStringExtra(KEY_DESC);*/
// Displaying all values on the screen
TextView lblName = (TextView) findViewById(R.id.name_label);
TextView lblCost = (TextView) findViewById(R.id.cost_label);
TextView lblDesc = (TextView) findViewById(R.id.description_label);
lblName.setText(name);
lblCost.setText(cost);
lblDesc.setText(cost);
Log.i("name", name+"");
Log.i("cost", cost+"");
}
}
XMLParser.java
package com.androidhive.xmlparsing;
import java.io.IOException;
import java.io.StringReader;
import java.io.UnsupportedEncodingException;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.util.EntityUtils;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import android.util.Log;
public class XMLParser {
// constructor
public XMLParser() {
}
/**
* Getting XML from URL making HTTP request
* #param url string
* */
public String getXmlFromUrl(String url) {
String xml = null;
try {
// defaultHttpClient
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost(url);
HttpResponse httpResponse = httpClient.execute(httpPost);
HttpEntity httpEntity = httpResponse.getEntity();
xml = EntityUtils.toString(httpEntity);
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
// return XML
return xml;
}
/**
* Getting XML DOM element
* #param XML string
* */
public Document getDomElement(String xml){
Document doc = null;
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
try {
DocumentBuilder db = dbf.newDocumentBuilder();
InputSource is = new InputSource();
is.setCharacterStream(new StringReader(xml));//
doc = db.parse(is);
} catch (ParserConfigurationException e) {
Log.e("Error: ", e.getMessage());
return null;
} catch (SAXException e) {
Log.e("Error: ", e.getMessage());
return null;
} catch (IOException e) {
Log.e("Error: ", e.getMessage());
return null;
}
return doc;
}
/** Getting node value
* #param elem element
*/
public final String getElementValue( Node elem ) {
Node child;
if( elem != null){
if (elem.hasChildNodes()){
for( child = elem.getFirstChild(); child != null; child = child.getNextSibling() ){
if( child.getNodeType() == Node.TEXT_NODE ){
return child.getNodeValue();
}
}
}
}
return "";
}
/**
* Getting node value
* #param Element node
* #param key string
* */
public String getValue(Element item, String str) {
NodeList n = item.getElementsByTagName(str);
return this.getElementValue(n.item(0));
}
}

Original post from here.
File fXmlFile = new File("your XML file");
DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder dBuilder = dbFactory.newDocumentBuilder();
Document doc = dBuilder.parse(fXmlFile);
doc.getDocumentElement().normalize();
System.out.println("Root element :" + doc.getDocumentElement().getNodeName());
NodeList nList = doc.getElementsByTagName("Cube");
System.out.println("----------------------------");
for (int temp = 0; temp < nList.getLength(); temp++) {
Node nNode = nList.item(temp);
System.out.println("\nCurrent Element :" + nNode.getNodeName());
if (nNode.getNodeType() == Node.ELEMENT_NODE) {
Element eElement = (Element) nNode;
String currency = eElement.getAttribute("currency");
String rate = eElement.getAttribute("rate");
if(currency.isEmpty()){
continue;
}
System.out.println("Ccurrency :" + currency);
System.out.println("Rate : " + rate);
}
}
It's printing the currency and the Rate.

Just replace
File fXmlFile = new File("your XML file");
on
URL url = null;
try {
url = new URL("http://www.ecb.europa.eu/stats/eurofxref/eurofxref-daily.xml");
} catch (MalformedURLException e2) {
// TODO Auto-generated catch block
e2.printStackTrace();
}
URLConnection conn = null;
try {
conn = url.openConnection();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
And code must run in AsyncTask. I will send full source code through few days.

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

Android - Get HTTP Post Response in other activity

I created two activities one contains some text fields which accepts data. From other activity(Async Task) this data is sent to the server and gets the response from the server.
I am able to log the response but unable to store that response in variable and user in other activities. Is there any way to do that?
Here is one activity,
RegisterDevice.java
package sys.darpan.tracking;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
public class RegisterDevice extends Activity{
EditText regEmail, regPassword, regImei, regDeviceName, regVehicleNumber;
Button regButton;
AsyncRegisterDevice asd;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.register_device);
regEmail = (EditText)findViewById(R.id.regEmail);
regPassword = (EditText)findViewById(R.id.regPassword);
regVehicleNumber = (EditText)findViewById(R.id.regVehicleNum);
regImei = (EditText)findViewById(R.id.regImei);
regDeviceName = (EditText)findViewById(R.id.regDeviceName);
regButton = (Button)findViewById(R.id.regButton);
regImei.setText("165465416416416");
regDeviceName.setText("GT-I9300");
regButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
registerDevice();
}
});
}
protected void registerDevice(){
asd = new AsyncRegisterDevice();
String email = regEmail.getText().toString();
String password = regPassword.getText().toString();
String imei = regImei.getText().toString();
String deviceName = regDeviceName.getText().toString();
String vehicleNo = regVehicleNumber.getText().toString();
String aobj[] = new String[5];
aobj[0] = email;
aobj[1] = password;
aobj[2] = vehicleNo;
aobj[3] = imei;
aobj[4] = deviceName;
asd.execute(aobj);
}
}
Here is Async Task,
package sys.darpan.tracking;
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import org.apache.http.HttpResponse;
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 android.os.AsyncTask;
import android.util.Log;
public class AsyncRegisterDevice extends AsyncTask<String, String, String> {
String sb;
String finalResult;
#Override
protected String doInBackground(String... params) {
String email = params[0];
String password = params[1];
String vnumber = params[2];
String imei = params[3];
String deviceName = params[4];
DefaultHttpClient defaulthttpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("http://logicvibes.com/vts/register-device.php");
ArrayList<BasicNameValuePair> arraylist = new ArrayList<BasicNameValuePair>(5);
arraylist.add(new BasicNameValuePair("email", email));
arraylist.add(new BasicNameValuePair("pass", password));
arraylist.add(new BasicNameValuePair("vno", vnumber));
arraylist.add(new BasicNameValuePair("imei", imei));
arraylist.add(new BasicNameValuePair("dname", deviceName));
try
{
httppost.setEntity(new UrlEncodedFormEntity(arraylist));
httppost.getAllHeaders();
}
catch (UnsupportedEncodingException unsupportedencodingexception)
{
unsupportedencodingexception.printStackTrace();
}
try {
// HttpResponse is an interface just like HttpPost.
//Therefore we can't initialize them
HttpResponse httpResponse = defaulthttpclient.execute(httppost);
// According to the JAVA API, InputStream constructor do nothing.
//So we can't initialize InputStream although it is not an interface
InputStream inputStream = httpResponse.getEntity().getContent();
InputStreamReader inputStreamReader = new InputStreamReader(inputStream);
BufferedReader bufferedReader = new BufferedReader(inputStreamReader);
StringBuilder stringBuilder = new StringBuilder();
String bufferedStrChunk = null;
while((bufferedStrChunk = bufferedReader.readLine()) != null){
stringBuilder.append(bufferedStrChunk);
}
sb = stringBuilder.toString();
Log.d("Custom resp: ", sb);
}
catch(Exception e){
e.printStackTrace();
}
return null;
}
#Override
protected void onPostExecute(String sb) {
Log.d("RESULT", "Result : " + sb);//this returns NULL
finalResult = sb;
}
public String getFinalResult() {
return finalResult;
}
}
I searched a lot but no luck, please tell me the proper way to do this.

Solved it by using,
try {
asd.execute(aobj).get();
} catch (InterruptedException e) {
e.printStackTrace();
} catch (ExecutionException e) {
e.printStackTrace();
}
The main thread waits until the async task finished processing. (good for short processes)

Develop Reference

Java is a programming language and computing platform first released by Sun Microsystems in 1995.

http request asynctask in onclicklistener - java

In new onoff(this), this refers to the instance of OnClickListener. Change new onoff(this).execute(url); with new onoff(SingleMenuItemActivity.this).execute(url);

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