Hi I am building a login app in where the details of the users will be shown using JSON PHP and MYSQL but whenever the profile would show up it crashes what Am I doing wrong? What's weird is that this was working few days ago
logcat report
10-05 18:55:34.088: E/AndroidRuntime(3173): FATAL EXCEPTION: main
10-05 18:55:34.088: E/AndroidRuntime(3173): java.lang.NullPointerException
10-05 18:55:34.088: E/AndroidRuntime(3173): at com.example.itmaproject.EditContactsActivity$GetProductDetails$1.run(EditContactsActivity.java:144)
10-05 18:55:34.088: E/AndroidRuntime(3173): at android.os.Handler.handleCallback(Handler.java:725)
10-05 18:55:34.088: E/AndroidRuntime(3173): at android.os.Handler.dispatchMessage(Handler.java:92)
10-05 18:55:34.088: E/AndroidRuntime(3173): at android.os.Looper.loop(Looper.java:137)
10-05 18:55:34.088: E/AndroidRuntime(3173): at android.app.ActivityThread.main(ActivityThread.java:5041)
10-05 18:55:34.088: E/AndroidRuntime(3173): at java.lang.reflect.Method.invokeNative(Native Method)
10-05 18:55:34.088: E/AndroidRuntime(3173): at java.lang.reflect.Method.invoke(Method.java:511)
10-05 18:55:34.088: E/AndroidRuntime(3173): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
10-05 18:55:34.088: E/AndroidRuntime(3173): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
10-05 18:55:34.088: E/AndroidRuntime(3173): at dalvik.system.NativeStart.main(Native Method)
my codepackage com.example.itmaproject;
public class EditContactsActivity extends Activity {
TextView txtName;
TextView txtNumber;
TextView txtAbout;
TextView txtDate;
Button btnSave;
Button btnDelete;
TextView txtDepart;
TextView fullname;
TextView txtUser;
Button btnLogout;
String username;
SessionManager session;
// Progress Dialog
private ProgressDialog pDialog;
// JSON parser class
JSONParser jsonParser = new JSONParser();
// single product url
private static final String url_contact_details = "http://10.0.3.2/sunshine-ems/login/get_contact_details.php";
// url to update product
private static final String url_update_contact = "http://10.0.3.2/sunshine-ems/login/get_contact_details.php";
// url to delete product
private static final String url_delete_contact = "http://10.0.3.2/sunshine-ems/delete_contact.php";
// JSON Node names
private static final String TAG_SUCCESS = "success";
private static final String TAG_CONTACT = "contacts";
private static final String TAG_USERNAME = "username";
private static final String TAG_FIRSTNAME = "firstname";
private static final String TAG_DEPART = "department";
private static final String TAG_LASTNAME = "lastname";
private static final String TAG_ID = "user_id";
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.edit_contact);
btnLogout = (Button) findViewById(R.id.btnLogout);
// save button
// getting product details from intent
//Intent i = getIntent();
// getting product id (pid) from intent
//pid = i.getStringExtra(TAG_USERNAME);
session = new SessionManager(getApplicationContext());
username = session.getUsername();
// Getting complete product details in background thread
new GetProductDetails().execute();
btnLogout.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
// Launching All products Activity
session.logoutUser();
Intent i = new Intent(getApplicationContext(), MainActivity.class);
startActivity(i);
}
});
}
/**
* Background Async Task to Get complete product details
* */
class GetProductDetails extends AsyncTask<String, String, String> {
/**
* Before starting background thread Show Progress Dialog
* */
#Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(EditContactsActivity.this);
pDialog.setMessage("Loading contact details. Please wait...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(true);
pDialog.show();
}
/**
* Getting product details in background thread
* */
protected String doInBackground(String... params) {
// updating UI from Background Thread
runOnUiThread(new Runnable() {
public void run() {
// Check for success tag
int success;
try {
// Building Parameters
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("username", username));
// getting product details by making HTTP request
// Note that product details url will use GET request
JSONObject json = jsonParser.makeHttpRequest(
url_contact_details, "GET", params);
// check your log for json response
Log.d("Single Contact Details", json.toString());
// json success tag
success = json.getInt(TAG_SUCCESS);
if (success == 1) {
// successfully received product details
JSONArray contactObj = json.getJSONArray(TAG_CONTACT); // JSON Array
// get first product object from JSON Array
JSONObject contact = contactObj.getJSONObject(0);
// product with this pid found
// Edit Text
txtName = (TextView) findViewById(R.id.inputName);
txtDepart = (TextView) findViewById(R.id.department);
//txtAbout = (TextView) findViewById(R.id.inputDesc);
txtUser = (TextView) findViewById(R.id.inputPrice);
// display product data in EditText
String fullname = contact.getString(TAG_LASTNAME)+' '+ contact.getString(TAG_FIRSTNAME);
txtName.setText(fullname);
txtDepart.setText(contact.getString(TAG_DEPART));
//txtAbout.setText(contact.getString(TAG_LASTNAME));
txtUser.setText(contact.getString(TAG_ID));
Log.v("blahhhhh", "blah hhhhblah");
}else{
// product with pid not found
Log.v("blah", "blah blah");
}
} catch (JSONException e) {
e.printStackTrace();
}
}
});
return null;
}
/**
* After completing background task Dismiss the progress dialog
* **/
protected void onPostExecute(String file_url) {
// dismiss the dialog once got all details
pDialog.dismiss();
}
}
/**
* Background Async Task to Save product Details
* */
class SaveProductDetails extends AsyncTask<String, String, String> {
/**
* Before starting background thread Show Progress Dialog
* */
#Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(EditContactsActivity.this);
pDialog.setMessage("Saving contact ...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(true);
pDialog.show();
}
/**
* Saving product
* */
protected String doInBackground(String... args) {
// getting updated data from EditTexts
String name = txtName.getText().toString();
//String number = txtNumber.getText().toString();
//String about = txtAbout.getText().toString();
String user = txtUser.getText().toString();
String depart = txtDepart.getText().toString();
// Building Parameters
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair(TAG_USERNAME, username));
params.add(new BasicNameValuePair(TAG_FIRSTNAME, name));
params.add(new BasicNameValuePair(TAG_DEPART, depart));
//params.add(new BasicNameValuePair(TAG_LASTNAME, about));
params.add(new BasicNameValuePair(TAG_ID, user));
// sending modified data through http request
// Notice that update product url accepts POST method
JSONObject json = jsonParser.makeHttpRequest(url_update_contact,
"POST", params);
// check json success tag
try {
int success = json.getInt(TAG_SUCCESS);
if (success == 1) {
// successfully updated
Intent i = getIntent();
// send result code 100 to notify about product update
setResult(100, i);
finish();
} else {
// failed to update product
}
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
/**
* After completing background task Dismiss the progress dialog
* **/
protected void onPostExecute(String file_url) {
// dismiss the dialog once product uupdated
pDialog.dismiss();
}
}
/*****************************************************************
* Background Async Task to Delete Product
* */
class DeleteProduct extends AsyncTask<String, String, String> {
/**
* Before starting background thread Show Progress Dialog
* */
#Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(EditContactsActivity.this);
pDialog.setMessage("Deleting Contact...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(true);
pDialog.show();
}
/**
* Deleting product
* */
protected String doInBackground(String... args) {
// Check for success tag
int success;
try {
// Building Parameters
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("username", username));
// getting product details by making HTTP request
JSONObject json = jsonParser.makeHttpRequest(
url_delete_contact, "POST", params);
// check your log for json response
Log.d("Delete Contact", json.toString());
// json success tag
success = json.getInt(TAG_SUCCESS);
if (success == 1) {
// product successfully deleted
// notify previous activity by sending code 100
Intent i = getIntent();
// send result code 100 to notify about product deletion
setResult(100, i);
finish();
}
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
/**
* After completing background task Dismiss the progress dialog
* **/
protected void onPostExecute(String file_url) {
// dismiss the dialog once product deleted
pDialog.dismiss();
}
}
}
Line 141
Log.d("Single Contact Details", json.toString());
Please check your url JSON may be null because of it
Related
In AllProductActivity.java where data is view in list form. On onItemClick depending on pid data move to next EditProductActivity.
Following code is working fine in eclipse but while working in Android Studio activity unfortunately stopped. why I just don't get it if anyone know it.
Logcat for error
Please help me.
AllProductActivity.java
public class AllProductsActivity extends ListActivity {
// Progress Dialog
private ProgressDialog pDialog;
// Creating JSON Parser object
JSONParser jParser = new JSONParser();
ArrayList<HashMap<String, String>> productsList;
// url to get all products list
private static String url_all_products = "http://192.168.1.2/android_connect/get_all_products.php";
// JSON Node names
private static final String TAG_SUCCESS = "success";
private static final String TAG_PRODUCTS = "products";
private static final String TAG_PID = "pid";
private static final String TAG_NAME = "name";
// products JSONArray
JSONArray products = null;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.all_products);
// Hashmap for ListView
productsList = new ArrayList<HashMap<String, String>>();
// Loading products in Background Thread
new LoadAllProducts().execute();
// Get listview
ListView lv = getListView();
// on seleting single product
// launching Edit Product Screen
lv.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
// getting values from selected ListItem
String pid = ((TextView) view.findViewById(R.id.pid)).getText()
.toString();
// Starting new intent
Intent in = new Intent(getApplicationContext(),
EditProductActivity.class);
// sending pid to next activity
in.putExtra(TAG_PID, pid);
// starting new activity and expecting some response back
startActivityForResult(in, 100);
}
});
}
// Response from Edit Product Activity
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
// if result code 100
if (resultCode == 100) {
// if result code 100 is received
// means user edited/deleted product
// reload this screen again
Intent intent = getIntent();
finish();
startActivity(intent);
}
}
/**
* Background Async Task to Load all product by making HTTP Request
* */
class LoadAllProducts extends AsyncTask<String, String, String> {
/**
* Before starting background thread Show Progress Dialog
* */
#Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(AllProductsActivity.this);
pDialog.setMessage("Loading products. Please wait...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(false);
pDialog.show();
}
/**
* getting All products from url
* */
protected String doInBackground(String... args) {
// Building Parameters
List<NameValuePair> params = new ArrayList<NameValuePair>();
// getting JSON string from URL
JSONObject json = jParser.makeHttpRequest(url_all_products, "GET", params);
// Check your log cat for JSON reponse
Log.d("All Products: ", json.toString());
try {
// Checking for SUCCESS TAG
int success = json.getInt(TAG_SUCCESS);
if (success == 1) {
// products found
// Getting Array of Products
products = json.getJSONArray(TAG_PRODUCTS);
// looping through All Products
for (int i = 0; i < products.length(); i++) {
JSONObject c = products.getJSONObject(i);
// Storing each json item in variable
String id = c.getString(TAG_PID);
String name = c.getString(TAG_NAME);
// creating new HashMap
HashMap<String, String> map = new HashMap<String, String>();
// adding each child node to HashMap key => value
map.put(TAG_PID, id);
map.put(TAG_NAME, name);
// adding HashList to ArrayList
productsList.add(map);
}
} else {
// no products found
// Launch Add New product Activity
Intent i = new Intent(getApplicationContext(),
NewProductActivity.class);
// Closing all previous activities
i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(i);
}
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
/**
* After completing background task Dismiss the progress dialog
* **/
protected void onPostExecute(String file_url) {
// dismiss the dialog after getting all products
pDialog.dismiss();
// updating UI from Background Thread
runOnUiThread(new Runnable() {
public void run() {
/**
* Updating parsed JSON data into ListView
* */
ListAdapter adapter = new SimpleAdapter(
AllProductsActivity.this, productsList,
R.layout.list_item, new String[] { TAG_PID,
TAG_NAME},
new int[] { R.id.pid, R.id.name });
// updating listview
setListAdapter(adapter);
}
});
}
}
}
EditProductActivity.java
public class EditProductActivity extends Activity {
EditText txtName;
EditText txtPrice;
EditText txtDesc;
EditText txtCreatedAt;
Button btnSave;
Button btnDelete;
String pid;
// Progress Dialog
private ProgressDialog pDialog;
// JSON parser class
JSONParser jsonParser = new JSONParser();
// single product url
private static final String url_product_detials = "http://192.168.1.2/android_connect/get_product_details.php";
// JSON Node names
private static final String TAG_SUCCESS = "success";
private static final String TAG_PRODUCT = "product";
private static final String TAG_PID = "pid";
private static final String TAG_NAME = "name";
private static final String TAG_PRICE = "price";
private static final String TAG_DESCRIPTION = "description";
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.edit_product);
// save button
btnSave = (Button) findViewById(R.id.btnSave);
btnDelete = (Button) findViewById(R.id.btnDelete);
// getting product details from intent
Intent i = getIntent();
// getting product id (pid) from intent
pid = i.getStringExtra(TAG_PID);
// Getting complete product details in background thread
new GetProductDetails().execute();
// save button click event
btnSave.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View arg0) {
// starting background task to update product
}
});
// Delete button click event
btnDelete.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View arg0) {
// deleting product in background thread
}
});
}
/**
* Background Async Task to Get complete product details
*/
class GetProductDetails extends AsyncTask<String, String, String> {
/**
* Before starting background thread Show Progress Dialog
*/
#Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(EditProductActivity.this);
pDialog.setMessage("Loading product details. Please wait...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(true);
pDialog.show();
}
/**
* Getting product details in background thread
*/
protected String doInBackground(String... params) {
// updating UI from Background Thread
runOnUiThread(new Runnable() {
public void run() {
// Check for success tag
int success;
try {
// Building Parameters
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("pid", pid));
// getting product details by making HTTP request
// Note that product details url will use GET request
JSONObject json = jsonParser.makeHttpRequest(
url_product_detials, "GET", params);
// check your log for json response
Log.d("Single Product Details", json.toString());
// json success tag
success = json.getInt(TAG_SUCCESS);
if (success == 1) {
// successfully received product details
JSONArray productObj = json
.getJSONArray(TAG_PRODUCT); // JSON Array
// get first product object from JSON Array
JSONObject product = productObj.getJSONObject(0);
// product with this pid found
// Edit Text
txtName = (EditText) findViewById(R.id.inputName);
txtPrice = (EditText) findViewById(R.id.inputPrice);
txtDesc = (EditText) findViewById(R.id.inputDesc);
// display product data in EditText
txtName.setText(product.getString(TAG_NAME));
txtPrice.setText(product.getString(TAG_PRICE));
txtDesc.setText(product.getString(TAG_DESCRIPTION));
} else {
// product with pid not found
}
} catch (JSONException e) {
e.printStackTrace();
}
}
});
return null;
}
/**
* After completing background task Dismiss the progress dialog
**/
protected void onPostExecute(String file_url) {
// dismiss the dialog once got all details
pDialog.dismiss();
}
}
}
Logcat error:-
Process: info.androidhive.androidphpconnection, PID: 10068
android.os.NetworkOnMainThreadException
at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1273)
at libcore.io.BlockGuardOs.connect(BlockGuardOs.java:110)
at libcore.io.IoBridge.connectErrno(IoBridge.java:137)
at libcore.io.IoBridge.connect(IoBridge.java:122)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:183)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:452)
at java.net.Socket.connect(Socket.java:884)
at org.apache.http.conn.scheme.PlainSocketFactory.connectSocket(PlainSocketFactory.java:124)
at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:149)
at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:169)
at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:124)
at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:366)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:560)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:492)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:470)
at info.androidhive.androidphpconnection.JSONParser.makeHttpRequest(JSONParser.java:62)
at info.androidhive.androidphpconnection.EditProductActivity$GetProductDetails$1.run(EditProductActivity.java:131)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
Reason : Calling networking stuff on UI thread. This line
JSONObject json = jsonParser.makeHttpRequest(
url_product_detials, "GET", params);
1.runOnUiThread runs on UI thread and where you never ever make HTTP/networking stuff.
2.
doInBackGround runs on worker thread where you can make http/networking stuff.
3. No need to call runOnUiThread inside onPreExecute and onPostExecute because these method run on UI thread only.
you code changes go like this.
protected String doInBackground(String... args) {
// Check for success tag
try {
// Building Parameters
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("pid", pid));
final JSONObject json = jsonParser.makeHttpRequest(
url_product_detials, "GET", params);
final int success = json.getInt(TAG_SUCCESS);
//below code runs on UI thread.
runOnUiThread(new Runnable() {
public void run() {
if (success == 1) {
// successfully received product details
try {
JSONArray productObj = json.getJSONArray(TAG_PRODUCT); // JSON Array
// get first product object from JSON Array
JSONObject product = productObj.getJSONObject(0);
// product with this pid found
// Edit Text
txtName = (EditText) findViewById(R.id.inputName);
txtPrice = (EditText) findViewById(R.id.inputPrice);
txtDesc = (EditText) findViewById(R.id.inputDesc);
// display product data in EditText
txtName.setText(product.getString(TAG_NAME));
txtPrice.setText(product.getString(TAG_PRICE));
txtDesc.setText(product.getString(TAG_DESCRIPTION));
} catch (JSONException e) {
}
} else {
// product with pid not found
}
}
});
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
after the crashing problem been solved now the application is not executing the update or deleting
when i update it crashes immediately but when i delete it shows me the toast and nothing happens then
this is the class
public class EditCard extends Activity {
EditText txtName;
EditText txtPosition;
EditText txtCollege;
EditText txtPhone;
Button btnSave;
Button btnDelete;
String cid;
// Progress Dialog
private ProgressDialog pDialog;
// JSON parser class
JSONParser jsonParser = new JSONParser();
// single product url
private static final String url_card_details = "http://XXX";
// url to update product
private static final String url_update_card = "http://XXX";
// url to delete product
private static final String url_delete_card = "http://XXX";
// JSON Node names
private static final String TAG_SUCCESS = "success";
private static final String TAG_CARDS = "cards";
private static final String TAG_CID = "cid";
private static final String TAG_CNAME = "name";
private static final String TAG_POSITION = "position";
private static final String TAG_COLLEGE = "college";
private static final String TAG_PHONE = "phone";
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.edit_card);
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder()
.permitAll().build();
StrictMode.setThreadPolicy(policy);
// save button
btnSave = (Button) findViewById(R.id.SaveCard);
btnDelete = (Button) findViewById(R.id.DeleteCard);
// getting product details from intent
Intent i = getIntent();
// getting product id (pid) from intent
cid = i.getStringExtra(TAG_CID);
// Getting complete product details in background thread
new GetCardDetails().execute();
// save button click event
btnSave.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View arg0) {
// starting background task to update product
new SaveCardDetails().execute();
}
});
// Delete button click event
btnDelete.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View arg0) {
// deleting product in background thread
new DeleteCard().execute();
}
});
}
/**
* Background Async Task to Get complete product details
* */
class GetCardDetails extends AsyncTask<String, String, String> {
/**
* Before starting background thread Show Progress Dialog
* */
#Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(EditCard.this);
pDialog.setMessage("Loading card details. Please wait...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(true);
pDialog.show();
}
/**
* Getting product details in background thread
* */
protected String doInBackground(String... params) {
// updating UI from Background Thread
runOnUiThread(new Runnable() {
public void run() {
// Check for success tag
int success;
try {
// Building Parameters
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("cid", cid));
// getting product details by making HTTP request
// Note that product details url will use GET request
JSONObject json = jsonParser.makeHttpRequest(
url_card_details, "GET", params);
// check your log for json response
Log.d("Single Product Details", json.toString());
// json success tag
success = json.getInt(TAG_SUCCESS);
if (success == 1) {
// successfully received product details
JSONArray cardObj = json
.getJSONArray(TAG_CARDS); // JSON Array
// get first product object from JSON Array
JSONObject card = cardObj.getJSONObject(0);
// product with this pid found
// Edit Text
txtName = (EditText) findViewById(R.id.editCard1);
txtPosition = (EditText) findViewById(R.id.editCard2);
txtCollege= (EditText) findViewById(R.id.editCard3);
txtPhone= (EditText) findViewById(R.id.editCard4);
// display product data in EditText
txtName.setText(card.getString(TAG_CNAME));
txtPosition.setText(card.getString(TAG_POSITION));
txtCollege.setText(card.getString(TAG_COLLEGE));
txtPhone.setText(card.getString(TAG_PHONE));
}else{
// product with pid not found
}
} catch (JSONException e) {
e.printStackTrace();
}
}
});
return null;
}
/**
* After completing background task Dismiss the progress dialog
* **/
protected void onPostExecute(String file_url) {
// dismiss the dialog once got all details
pDialog.dismiss();
}
}
/**
* Background Async Task to Save product Details
* */
class SaveCardDetails extends AsyncTask<String, String, String> {
/**
* Before starting background thread Show Progress Dialog
* */
#Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(EditCard.this);
pDialog.setMessage("Saving Card ...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(true);
pDialog.show();
}
/**
* Saving product
* */
protected String doInBackground(String... args) {
// getting updated data from EditTexts
String name = txtName.getText().toString();
String position = txtPosition.getText().toString();
String college = txtCollege.getText().toString();
String phone = txtPhone.getText().toString();
// Building Parameters
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("name", name));
params.add(new BasicNameValuePair("position", position));
params.add(new BasicNameValuePair("college", college));
params.add(new BasicNameValuePair("phone", phone));
// sending modified data through http request
// Notice that update product url accepts POST method
JSONObject json = jsonParser.makeHttpRequest(url_update_card,
"POST", params);
// check json success tag
try {
int success = json.getInt(TAG_SUCCESS);
if (success == 1) {
// successfully updated
Intent i = getIntent();
// send result code 100 to notify about product update
setResult(100, i);
finish();
} else {
// failed to update product
}
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
/**
* After completing background task Dismiss the progress dialog
* **/
protected void onPostExecute(String file_url) {
// dismiss the dialog once product uupdated
Toast.makeText(getApplicationContext(), "The Student Card Updated sucessfully", Toast.LENGTH_LONG).show();
pDialog.dismiss();
}
}
/*****************************************************************
* Background Async Task to Delete Product
* */
class DeleteCard extends AsyncTask<String, String, String> {
/**
* Before starting background thread Show Progress Dialog
* */
#Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(EditCard.this);
pDialog.setMessage("Deleting Card...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(true);
pDialog.show();
}
/**
* Deleting product
* */
protected String doInBackground(String... args) {
// Check for success tag
int success;
try {
// Building Parameters
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("cid", cid));
// getting product details by making HTTP request
JSONObject json = jsonParser.makeHttpRequest(
url_delete_card, "POST", params);
// check your log for json response
Log.d("Delete Card", json.toString());
// json success tag
success = json.getInt(TAG_SUCCESS);
if (success == 1) {
// product successfully deleted
// notify previous activity by sending code 100
Intent i = getIntent();
// send result code 100 to notify about product deletion
setResult(100, i);
finish();
}
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
/**
* After completing background task Dismiss the progress dialog
* **/
protected void onPostExecute(String file_url) {
// dismiss the dialog once product deleted
Toast.makeText(getApplicationContext(), "The Student Card deleted sucessfully", Toast.LENGTH_LONG).show();
pDialog.dismiss();
}
}
}
and this is the LogCat when i update
07-18 01:15:53.053: W/dalvikvm(8740): threadid=11: thread exiting with uncaught exception (group=0x40a71930)
07-18 01:15:53.383: E/AndroidRuntime(8740): FATAL EXCEPTION: AsyncTask #1
07-18 01:15:53.383: E/AndroidRuntime(8740): java.lang.RuntimeException: An error occured while executing doInBackground()
07-18 01:15:53.383: E/AndroidRuntime(8740): at android.os.AsyncTask$3.done(AsyncTask.java:299)
07-18 01:15:53.383: E/AndroidRuntime(8740): at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:352)
07-18 01:15:53.383: E/AndroidRuntime(8740): at java.util.concurrent.FutureTask.setException(FutureTask.java:219)
07-18 01:15:53.383: E/AndroidRuntime(8740): at java.util.concurrent.FutureTask.run(FutureTask.java:239)
07-18 01:15:53.383: E/AndroidRuntime(8740): at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
07-18 01:15:53.383: E/AndroidRuntime(8740): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
07-18 01:15:53.383: E/AndroidRuntime(8740): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
07-18 01:15:53.383: E/AndroidRuntime(8740): at java.lang.Thread.run(Thread.java:856)
07-18 01:15:53.383: E/AndroidRuntime(8740): Caused by: java.lang.NullPointerException
07-18 01:15:53.383: E/AndroidRuntime(8740): at com.example.ahliaevents.EditCard$SaveCardDetails.doInBackground(EditCard.java:210)
07-18 01:15:53.383: E/AndroidRuntime(8740): at com.example.ahliaevents.EditCard$SaveCardDetails.doInBackground(EditCard.java:1)
07-18 01:15:53.383: E/AndroidRuntime(8740): at android.os.AsyncTask$2.call(AsyncTask.java:287)
07-18 01:15:53.383: E/AndroidRuntime(8740): at java.util.concurrent.FutureTask.run(FutureTask.java:234)
07-18 01:15:53.383: E/AndroidRuntime(8740): ... 4 more
and this is the LogCat when i delete
07-18 01:18:01.584: E/JSON Parser(8850): Error parsing data org.json.JSONException: Value <!DOCTYPE of type java.lang.String cannot be converted to JSONObject
For your delete crash, you're not getting JSON back from the server, you're probably getting an error page. The parser is expecting to see JSON and it sees what appears to be the beginning of an XML/XHTML document.
For your other crash, just look at your source at line 210. You're getting a NullPointerException, which means that you expect something to be an object, but it's a null reference.
Most alarming is your use of runOnUiThread() within a doInBackground() the whole point of doInBackground is to avoid the UI Thread.
They have mentionned that the ERROR was occured while excecuting doInBackground()
public class NewClientActivity extends Activity {
// Progress Dialog
private ProgressDialog pDialog;
JSONParser jsonParser = new JSONParser();
EditText name;
EditText login;
EditText password;
EditText rePassword;
EditText email;
EditText adresse;
EditText tel;
// url to create new product
private static String url_add_client = "http://192.168.1.3/android_connect/add_client.php";
// JSON Node names
private static final String TAG_SUCCESS = "success";
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main_activity1);
// Edit Text
name = (EditText) findViewById(R.id.textViewNom);
login = (EditText) findViewById(R.id.textViewLogin);
password = (EditText) findViewById(R.id.textViewPassword);
rePassword = (EditText) findViewById(R.id.textViewPassword1);
email = (EditText) findViewById(R.id.textViewEmail);
adresse = (EditText) findViewById(R.id.textViewAdresse);
tel = (EditText) findViewById(R.id.textViewTel);
// Create button
Button btnAddClient = (Button) findViewById(R.id.connect);
// button click event
btnAddClient.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
// creating new product in background thread
new CreateNewProduct().execute();
}
});
}
/**
* Background Async Task to Create new product
* */
class CreateNewProduct extends AsyncTask<String, String, String> {
/**
* Before starting background thread Show Progress Dialog
* */
#Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(NewClientActivity.this);
pDialog.setMessage("Adding Customer to DataBase..");
pDialog.setIndeterminate(false);
pDialog.setCancelable(true);
pDialog.show();
}
/**
* Creating product
* */
protected String doInBackground(String... args) {
String Name = name.getText().toString();
String Login = login.getText().toString();
String Password = password.getText().toString();
// String RePassword = rePassword.getText().toString();
String Email = email.getText().toString();
String Adresse = adresse.getText().toString();
String Tel = tel.getText().toString();
// Building Parameters
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("Name", Name));
params.add(new BasicNameValuePair("Login", Login));
params.add(new BasicNameValuePair("Password", Password));
params.add(new BasicNameValuePair("Email", Email));
params.add(new BasicNameValuePair("Adresse", Adresse));
params.add(new BasicNameValuePair("Tel", Tel));
// getting JSON Object
// Note that create product url accepts POST method
JSONObject json = jsonParser.makeHttpRequest(url_add_client,
"POST", params);
// check log cat fro response
Log.d("Create Response", json.toString());
// check for success tag
try {
int success = json.getInt(TAG_SUCCESS);
if (success == 1) {
// successfully created product
// Intent i = new Intent(getApplicationContext(), AllProductsActivity.class);
// startActivity(i);
// closing this screen
// finish();
} else {
Toast.makeText(getApplicationContext(), "L'inscription n'a pas été éfectuée correctement", Toast.LENGTH_SHORT).show(); }
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
/**
* After completing background task Dismiss the progress dialog
* **/
protected void onPostExecute(String file_url) {
// dismiss the dialog once done
pDialog.dismiss();
}
}
}
Please if you can check it out and tell me where the ERROR is ??
thank you in advance !!
just override into your AsyncTask the method onProgressUpdate
class CreateNewProduct extends AsyncTask<String, String, String> {
...
...
#Override
protected void onProgressUpdate(String... values) {
Toast.makeText(getApplicationContext(), values[0], Toast.LENGTH_SHORT).show();
}
/**
* Creating product
* */
protected String doInBackground(String... args) {
...
// check for success tag
try {
int success = json.getInt(TAG_SUCCESS);
if (success == 1) {
// successfully created product
// Intent i = new Intent(getApplicationContext(), AllProductsActivity.class);
// startActivity(i);
// closing this screen
// finish();
} else {
publishProgress("L'inscription n'a pas été éfectuée correctement");
}
} catch (JSONException e) {
e.printStackTrace();
}
...
}
}
I believe the error is because you are trying to update the UI in the doInBackground method of the AsyncTask.
Toast.makeText(getApplicationContext(), "L'inscription n'a pas été éfectuée correctement", Toast.LENGTH_SHORT).show();
Move the above code to postExecute.
Also the following code in doInBackground wouldn't possibly cause an error to occur
String Name = name.getText().toString();
String Login = login.getText().toString();
String Password = password.getText().toString();
String Email = email.getText().toString();
String Adresse = adresse.getText().toString();
String Tel = tel.getText().toString();
Forget ASyncTask,
Android Annotations is the better solution!
Look this:
https://github.com/excilys/androidannotations/wiki
Toast.makeText(getApplicationContext(), "L'inscription n'a pas été éfectuée correctement", Toast.LENGTH_SHORT).show();
You are trying to update ui from the background thread ie displaying toast.
Display toast in onPostExecute() or use runonuithread
runOnUiThread(new Runnable() //run on ui thread
{
public void run()
{
Toast.makeText(NewClientActivity.this,"mymessage", 1000).show();
}
});
Use a activity context in place of getApplicationContext()
When to call activity context OR application context?
For more information check the link below .
http://developer.android.com/reference/android/os/AsyncTask.html
i'm having a problem with my application trying to retrieve data from mysql database. when i run the application i get a message that I've created in the php code saying "student not found".
Here is the java code:
public class StudentEditAccount extends Activity {
EditText txtsid;
EditText txtfirstname;
EditText txtlastname;
EditText txtcoursecode;
EditText txtphonenumber;
EditText txtemail;
Button btnSave;
Button btnDelete;
String sid;
// Progress Dialog
private ProgressDialog pDialog;
// JSON parser class
JSONParser jsonParser = new JSONParser();
// single student url
private static final String url_product_detials = "http://10.0.2.2/example/get_product_details.php";
// url to update student
private static final String url_update_product = "http://10.0.2.2/example/update_product.php";
// url to delete student
private static final String url_delete_product = "http://10.0.2.2/example/delete_product.php";
// JSON Node names
private static final String TAG_SUCCESS = "success";
private static final String TAG_STUDENTS = "students";
private static final String TAG_SID = "sid";
private static final String TAG_FIRSTNAME = "firstname";
private static final String TAG_LASTNAME = "lastname";
private static final String TAG_COURSECODE = "coursecode";
private static final String TAG_PHONENUMBER = "phonenumber";
private static final String TAG_EMAIL = "email";
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.studenteditaccount);
// save button
btnSave = (Button) findViewById(R.id.btnSave);
btnDelete = (Button) findViewById(R.id.btnDelete);
// getting student details from intent
Intent i = getIntent();
// getting student id (id) from intent
sid = i.getStringExtra(TAG_SID);
// Getting complete student details in background thread
new GetStudentAccountDetails().execute();
// save button click event
btnSave.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// starting background task to update student
new SaveStudentAccountDetails().execute();
}
});
// Delete button click event
btnDelete.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// deleting student in background thread
new DeleteStudentAccount().execute();
}
});
}
/**
* Background Async Task to Get complete student details
* */
class GetStudentAccountDetails extends AsyncTask<String, String, String> {
/**
* Before starting background thread Show Progress Dialog
* */
#Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(StudentEditAccount.this);
pDialog.setMessage("Loading account details. Please wait...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(true);
pDialog.show();
}
/**
* Getting student details in background thread
* */
protected String doInBackground(String... params) {
// updating UI from Background Thread
runOnUiThread(new Runnable() {
public void run() {
// Check for success tag
int success;
try {
// Building Parameters
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("sid", sid));
// getting student details by making HTTP request
// Note that student details url will use GET request
JSONObject json = jsonParser.makeHttpRequest(
url_product_detials, "GET", params);
// check your log for json response
Log.d("Single student Details", json.toString());
// json success tag
success = json.getInt(TAG_SUCCESS);
if (success == 1) {
// successfully received student details
JSONArray studentsObj = json
.getJSONArray(TAG_STUDENTS); // JSON Array
// get first student object from JSON Array
JSONObject students = studentsObj.getJSONObject(0);
// student with this sid found
// Edit Text
txtfirstname = (EditText) findViewById(R.id.inputfname);
txtlastname = (EditText) findViewById(R.id.inputlname);
txtcoursecode = (EditText) findViewById(R.id.inputcoursecode);
txtphonenumber = (EditText) findViewById(R.id.inputphonenumber);
txtemail = (EditText) findViewById(R.id.inputemail);
// display student data in EditText
txtfirstname.setText(students.getString(TAG_FIRSTNAME));
txtlastname.setText(students.getString(TAG_LASTNAME));
txtcoursecode.setText(students.getString(TAG_COURSECODE));
txtphonenumber.setText(students.getString(TAG_PHONENUMBER));
txtemail.setText(students.getString(TAG_EMAIL));
}else{
// student with sid not found
}
} catch (JSONException e) {
e.printStackTrace();
}
}
});
return null;
}
/**
* After completing background task Dismiss the progress dialog
* **/
protected void onPostExecute(String file_url) {
// dismiss the dialog once got all details
pDialog.dismiss();
}
}
/**
* Background Async Task to Save student Details
* */
class SaveStudentAccountDetails extends AsyncTask<String, String, String> {
/**
* Before starting background thread Show Progress Dialog
* */
#Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(StudentEditAccount.this);
pDialog.setMessage("Saving account ...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(true);
pDialog.show();
}
/**
* Saving student
* */
protected String doInBackground(String... args) {
// getting updated data from EditTexts
String sid = txtsid.getText().toString();
String firstname = txtfirstname.getText().toString();
String lastname = txtlastname.getText().toString();
String coursecode = txtcoursecode.getText().toString();
String phonenumber = txtphonenumber.getText().toString();
String email = txtemail.getText().toString();
// Building Parameters
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair(TAG_SID, sid));
params.add(new BasicNameValuePair(TAG_FIRSTNAME, firstname));
params.add(new BasicNameValuePair(TAG_LASTNAME, lastname));
params.add(new BasicNameValuePair(TAG_COURSECODE, coursecode));
params.add(new BasicNameValuePair(TAG_PHONENUMBER, phonenumber));
params.add(new BasicNameValuePair(TAG_EMAIL, email));
// sending modified data through http request
// Notice that update student url accepts POST method
JSONObject json = jsonParser.makeHttpRequest(url_update_product,
"POST", params);
// check json success tag
try {
int success = json.getInt(TAG_SUCCESS);
if (success == 1) {
// successfully updated
Intent i = getIntent();
// send result code 100 to notify about student update
setResult(100, i);
finish();
} else {
// failed to update student
}
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
/**
* After completing background task Dismiss the progress dialog
* **/
protected void onPostExecute(String file_url) {
// dismiss the dialog once student updated
pDialog.dismiss();
}
}
/*****************************************************************
* Background Async Task to Delete Product
* */
class DeleteStudentAccount extends AsyncTask<String, String, String> {
/**
* Before starting background thread Show Progress Dialog
* */
#Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(StudentEditAccount.this);
pDialog.setMessage("Deleting Account...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(true);
pDialog.show();
}
/**
* Deleting student
* */
protected String doInBackground(String... args) {
// Check for success tag
int success;
try {
// Building Parameters
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("sid", sid));
// getting student details by making HTTP request
JSONObject json = jsonParser.makeHttpRequest(
url_delete_product, "POST", params);
// check your log for json response
Log.d("Delete student", json.toString());
// json success tag
success = json.getInt(TAG_SUCCESS);
if (success == 1) {
// student successfully deleted
// notify previous activity by sending code 100
Intent i = getIntent();
// send result code 100 to notify about student deletion
setResult(100, i);
finish();
}
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
/**
* After completing background task Dismiss the progress dialog
* **/
protected void onPostExecute(String file_url) {
// dismiss the dialog once student deleted
pDialog.dismiss();
}
}
}
And this is the PHP code:
<?php
// array for JSON response
$response = array();
// include db connect class
require_once __DIR__ . '/db_connect.php';
// connecting to db
$db = new DB_CONNECT();
// check for post data
if (isset($_GET["sid"])) {
$sid = $_GET['sid'];
// get a students from student table
$result = mysql_query("SELECT *FROM student WHERE sid = $sid");
if (!empty($result)) {
// check for empty result
if (mysql_num_rows($result) > 0) {
$result = mysql_fetch_array($result);
$students = array();
$students["sid"] = $result["sid"];
$students["firstname"] = $result["firstname"];
$students["lastname"] = $result["lastname"];
$students["coursecode"] = $result["coursecode"];
$students["phonenumber"] = $result["phonenumber"];
$students["email"] = $result["email"];
// success
$response["success"] = 1;
// user node
$response["students"] = array();
array_push($response["students"], $students);
// echoing JSON response
echo json_encode($response);
} else {
// no student found
$response["success"] = 0;
$response["message"] = "No student found";
// echo no users JSON
echo json_encode($response);
}
} else {
// no student found
$response["success"] = 0;
$response["message"] = "No student found";
// echo no users JSON
echo json_encode($response);
}
} else {
// required field is missing
$response["success"] = 0;
$response["message"] = "Required field(s) is missing";
// echoing JSON response
echo json_encode($response);
}
?>
my question is: what is the problem that cause the application to display the message "Student not found" every time when i try to retrieve the data from Mysql database?
Thank you.
There is a missing space in your SQL query. It should be SELECT * FROM student WHERE sid = $sid
I am working in android platform and want to send some signup details to a php page for that i created an activity named as 'ContinueRegister' it contains an AsyncTask class. while running my project it shows unfortunately has stopped and there is some errors in logcat like
Activity com.opz.ContinueRegister has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView#41269db8
error opening trace file: No such file or directory
at android.os.Looper.loop(Looper.java:137)
at android.os.Handler.handleCallback(Handler.java:615)
atcom.opz.ContinueRegister$CreateNewUser.onPreExecute(ContinueRegister.java:76)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
at dalvik.system.NativeStart.main(Native Method)
at android.os.AsyncTask.executeOnExecutor(AsyncTask.java:586)
at java.lang.reflect.Method.invokeNative(Native Method)
this is my class file
public class ContinueRegister extends Activity {
// Progress Dialog
private ProgressDialog pDialog;
JSONParser jsonParser = new JSONParser();
EditText firstname;
EditText lastname;
EditText dob;
EditText gender;
RegisterActivity ra= new RegisterActivity();
// url to create new product
private static String url_create_product = "http://localhost/login_api/create_account.php/";
// JSON Node names
private static final String TAG_SUCCESS = "success";
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Set View to register.xml
setContentView(R.layout.registerfinsh);
Button bt=(Button)findViewById(R.id.btnRegister);
// Listening to Login Screen link
bt.setOnClickListener(new View.OnClickListener(){
public void onClick(View arg0) {
new CreateNewUser().execute();
}
});
}
/**
* Background Async Task to Create new product
* */
class CreateNewUser extends AsyncTask<String, String, String> {
/**
* Before starting background thread Show Progress Dialog
* */
#Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(ContinueRegister.this);
pDialog.setMessage("Creating New User..");
pDialog.setIndeterminate(false);
pDialog.setCancelable(true);
pDialog.show();
}
/**
* Creating User
* */
protected String doInBackground(String... args) {
String Username = ra.username.getText().toString();
String Email = ra.email.getText().toString();
String Password =ra.password.getText().toString();
firstname = (EditText)findViewById(R.id.first_name);
lastname =(EditText)findViewById(R.id.last_name);
dob =(EditText)findViewById(R.id.date_of_birth);
gender = (EditText)findViewById(R.id.gender);
String Firstname = firstname.getText().toString();
String Lastname = lastname.getText().toString();
String Dob =dob.getText().toString();
String Gender =gender.getText().toString();
// Building Parameters
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("Username", Username));
params.add(new BasicNameValuePair("Email", Email));
params.add(new BasicNameValuePair("Password", Password));
params.add(new BasicNameValuePair("Firstname", Firstname));
params.add(new BasicNameValuePair("Lastname", Lastname));
params.add(new BasicNameValuePair("Dob", Dob));
params.add(new BasicNameValuePair("Gender", Gender));
// getting JSON Object
// Note that create user url accepts POST method
JSONObject json = jsonParser.makeHttpRequest(url_create_product,
"POST", params);
// check log cat for response
Log.d("Create Response", json.toString());
// check for success tag
try {
int success = json.getInt(TAG_SUCCESS);
if (success == 1) {
// successfully created user
Intent i = new Intent(getApplicationContext(), FinishSignupActivity.class);
startActivity(i);
// closing this screen
finish();
} else {
// failed to create user
}
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
/**
* After completing background task Dismiss the progress dialog
* **/
protected void onPostExecute(String file_url) {
// dismiss the dialog once done
pDialog.dismiss();
TextView loginScreen = (TextView) findViewById(R.id.link_to_login2);
loginScreen.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
Intent m = new Intent(getApplicationContext(),LoginActivity.class);
startActivity(m);
}
});
}
}
}
please help me to fix this errors
String url_create_product = "http://10.0.2.2/login_api/create_account.php/";
OR
Use your local IP Like 192.168.0.1
String url_create_product = "http://192.168.0.1/login_api/create_account.php/";
Also check your login_api folder have file which name is create_account.php
One more thing is Never Access Any view inside doinBackGround(...)
Because doinBackGround method is non-UI thread.
we must give complete url like 192.10.1.000.
you can check in windows by using localhost.but you must provide complete url in the above line.
To know ur ipaddress open cmd prompt. and type ipconfig.
Put the code for calling intent onPostexecute
going to another activity is never a background task