Develop Reference

window leakage error not resolved after inserting data in MySQL

I am using localhost and MySQL database in my project. i have to insert data in database and then move to next intended activity. The Data is successfully added into database but after that app terminates with window leakage error in logcat.
Code:
class CreateNewCourier extends AsyncTask<String, String, String> {
/**
* Before starting background thread Show Progress Dialog
* */
#Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(PackageDetail.this);
pDialog.setMessage("Adding Details..");
pDialog.setIndeterminate(false);
pDialog.setCancelable(true);
pDialog.show();
}
/**
* Creating product
* */
protected String doInBackground(String... args) {
// Building Parameters
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("user_no", "120"));
params.add(new BasicNameValuePair("recp_name", recp_name));
params.add(new BasicNameValuePair("recp_no", recp_no));
params.add(new BasicNameValuePair("recp_adres", recp_adres));
params.add(new BasicNameValuePair("pkg_name", pkg_name));
params.add(new BasicNameValuePair("pkg_quan", pkg_quan));
params.add(new BasicNameValuePair("pickup_adres", pickup_adres));
params.add(new BasicNameValuePair("pkg_type", pkg_type));
params.add(new BasicNameValuePair("veh_type", veh_type));
params.add(new BasicNameValuePair("Breakable", Breakable));
// getting JSON Object
// Note that create product url accepts POST method
JSONObject json = jsonParser.makeHttpRequest(url_create_product,
"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(), Login.class);
startActivity(i);
// closing this screen
finish();
} else {
//failed to create 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 done
pDialog.dismiss();
}

Here is the solution , move this code to onPostExecute() after pDialog.dismiss();
if (success == 1) {
// successfully created product
Intent i = new Intent(getApplicationContext(), Login.class);
startActivity(i);
// closing this screen
finish();
} else {
//failed to create product
}
and also in onDestroy of activity add pDialog.dismiss(); to avoid leakage

method getText must be called from the ui thread

I am doing an application that need to send data from android to database. I am doing it using JSONParser. But I got problem when I launched the application, it doesn't send the data to the server. I got and error on "String name = inputName.getText().toString();". Here is it:
protected String doInBackground(String... args) {
String name = inputName.getText().toString();
String date = inputDate.getText().toString();
String time = inputTime.getText().toString();
String latitude = inputLatitude.getText().toString();
String longitude = inputLongitude.getText().toString();
String contacts = inputContacts.getText().toString();
// Building Parameters
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("name", name));
params.add(new BasicNameValuePair("date", date));
params.add(new BasicNameValuePair("time", time));
params.add(new BasicNameValuePair("latitude", latitude));
params.add(new BasicNameValuePair("longitude", longitude));
params.add(new BasicNameValuePair("contacts", contacts));
// getting JSON Object
// Note that create product url accepts POST method
JSONObject json = jsonParser.makeHttpRequest(url_create_product,
"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(), MainActivity.class);
startActivity(i);
// closing this screen
finish();
} else {
// failed to create 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 done
pDialog.dismiss();
}
}

As the error tells you, you cannot call getText() on a background thread. Instead, move your six getText() calls into a constructor of your AsyncTask, or possibly into an onPreExecute() callback, so the getText() calls are made on the main application thread.

App crash when execute asynctask

my app crash when execute asynctask. I try to send data from android to the server but my app crashes when execute AsyncTask
` input input = new input();
input.execute();
mainActivity = this;
latitude = "-6.711647";
longitude ="108.5413";`
public class input extends AsyncTask<String, String, String>
{
HashMap<String, String> user = db.getUserDetails();
String email = user.get("email");
String success;
#Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(MainActivity.this);
pDialog.setMessage("Sending Data to server...");
pDialog.setIndeterminate(false);
pDialog.show();
}
#Override
protected String doInBackground(String... arg0) {
String strEMAIL = email.toString();
String strNama = latitude.toString();
String strProdi = longitude.toString();
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("email", strEMAIL));
params.add(new BasicNameValuePair("latitude", strNama));
params.add(new BasicNameValuePair("longitude", strProdi));
JSONObject json = jParser.makeHttpRequest(url, "POST", params);
try {
success = json.getString("success");
} catch (Exception e) {
Toast.makeText(getApplicationContext(), "Error",
Toast.LENGTH_LONG).show();
}
return null;
}
protected void onPostExecute(String file_url) {
// dismiss the dialog once done
pDialog.dismiss();
if (success.equals("1"))
{
Toast.makeText(getApplicationContext(), "kirim data Sukses!!!", Toast.LENGTH_LONG).show();
}
else
{
Toast.makeText(getApplicationContext(), "kirim data Gagal!!!", Toast.LENGTH_LONG).show();
}
}
}
this my complete code http://pastebin.com/jRdxeQKG
and this my logcat http://prntscr.com/7p3vbz

The reference db is null when you call new input() in onCreate().
Solution: Just initialize db before calling new input():
db = new SQLiteHandler(getApplicationContext());
input input = new input();
By the way, there are many issues from the design point of view, but this will solve (one of) the crash(es).

1 Starting the name of your class with a lowercase letter is bad practice.input should be Input and should be a little more descriptive.
2 Your db initialization should come before the call to execute AsyncTask
3 You need to really understand AsyncTask before using it. You declare three generic types for your AsyncTask
public class input extends AsyncTask<String, String, String> {
but none of them is used. Your doInBackground method should be returning an instance of type NameValuePair or JSONObject.
The first generic type of an AsyncTask is the params, that is what you intend to pass to your doInBackground method. You say it's String but do not pass in any String in input.execute(); This is not a problem right now because you haven't attempted to use args0, but your app will crash if you try to. I just think you should really read about AsyncTask first and understand the basics.It will save you a whole lot of trouble.Cheers.

Android Async doinbackaground data to onpostexecute

I need some help with taking results from doinbackground to onpostexecute. The results are in the form of JSONArray. I want to populate two textviews in the UI through onpostexecute. There is no error in the code but nothing happens as it seems inpostexecute is not getting called. Please help. I have looked at several similar questions here and tried many things but unable to get it to work..thanks in advance. Please note private static final String TAG_LATEST_SCORES = "cricket_scores";
class PostScores extends AsyncTask<JSONArray, Void, JSONArray> {
/**
* Before starting background thread Show Progress Dialog
* */
#Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(NewScoreupdatescricketActivity.this);
pDialog.setMessage("Posting LiveScore Updates..");
pDialog.setIndeterminate(false);
pDialog.setCancelable(true);
pDialog.show();
}
/**
* Creating product
* */
protected JSONArray doInBackground(JSONArray... args) {
String runs1 = runs.getText().toString();
String wicket1 = wicket.getText().toString();
String overs1 = over.getText().toString();
String rr1 = rr.getText().toString();
String team_name = null;
String bat1;
if (innings.isChecked() == false) {
bat1 = "1";
team_name = bat.getText().toString();
} else {
bat1 = "2";
team_name = bat.getText().toString();
}
if (rr1.equals("NA")) {
rr1 = "0";
}
// Building Parameters
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("runs", runs1));
params.add(new BasicNameValuePair("wickets", wicket1));
params.add(new BasicNameValuePair("id", id1));
params.add(new BasicNameValuePair("overs", overs1));
params.add(new BasicNameValuePair("rr", rr1));
params.add(new BasicNameValuePair("bat", bat1));
params.add(new BasicNameValuePair("team_name", team_name));
// getting JSON Object
// Note that create product url accepts POST method
JSONObject json = jsonParser.makeHttpRequest(url_create_product,
"POST", params);
// check log cat fro response
Log.d("Create Response", json.toString());
// check for success tag
try {
int success = json.getInt(TAG_SUCCESS);
pDialog.dismiss();
if (success == 1) {
latest_scores = json.getJSONArray(TAG_LATEST_SCORES);
} else {
}
} catch (JSONException e) {
e.printStackTrace();
}
pDialog.dismiss();
return latest_scores;
}
}
/**
* After completing background task Dismiss the progress dialog
* **/
protected void onPostExecute(JSONArray latest_sc) {
// dismiss the dialog once done
try {
for (int i = 0; i < latest_sc.length(); i++) {
JSONObject c = latest_sc.getJSONObject(i);
String wickets = c.getString(TAG_WICKETS);
String runs = c.getString(TAG_RUNS);
score_inngs1.setText(wickets + runs);
}
} catch (JSONException e) {
e.printStackTrace();
}
}
}

Check your brackets. After your definition of doInBackground, you have an extra bracket - that one closes off your PostScores class, so your onPostExecute method is defined as a member of whatever class is enclosing PostScores, if any.
Also, you'll need to #Override the AsyncTask methods to provide your own implementation.

error in AsyncTask class unable to send data

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