Develop Reference

Main Activity toolbar not showing after hiding when attaching fragment

I am attaching a fragment from a fragment that is attached to an activity and then inside the fragment i have set my custom toolbar with set setDisplayHomeUpEnabled to true. when am attaching the fragment i have set the Main activity toolbar to be hidden, the only problem is that it is not being unhidden when am returning to the parent fragment from the child fragment
package manu.apps.cartv6.Activities;
import androidx.annotation.NonNull;
import androidx.appcompat.app.ActionBarDrawerToggle;
import androidx.appcompat.app.AppCompatActivity;
import androidx.appcompat.widget.Toolbar;
import androidx.core.view.GravityCompat;
import androidx.drawerlayout.widget.DrawerLayout;
import androidx.fragment.app.Fragment;
import androidx.fragment.app.FragmentManager;
import androidx.fragment.app.FragmentTransaction;
import android.app.ProgressDialog;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
import com.android.volley.AuthFailureError;
import com.android.volley.Request;
import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.StringRequest;
import com.android.volley.toolbox.Volley;
import com.google.android.material.navigation.NavigationView;
import com.google.android.material.snackbar.Snackbar;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.text.DecimalFormat;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import manu.apps.cartv6.Classes.CartCounterConverter;
import manu.apps.cartv6.Classes.Config;
import manu.apps.cartv6.Classes.Product;
import manu.apps.cartv6.Classes.UserSessionManager;
import manu.apps.cartv6.Fragments.UserProfileFragment;
import manu.apps.cartv6.Fragments.ViewProductsFragment;
import manu.apps.cartv6.Interfaces.AddRemoveCallbacks;
import manu.apps.cartv6.R;
import manu.apps.cartv6.Tests.CartFragment;
public class MainActivity extends AppCompatActivity implements View.OnClickListener, NavigationView.OnNavigationItemSelectedListener, AddRemoveCallbacks {
/** Lists*/
public static List<Product> cartList = new ArrayList<>();
/** Variables*/
// Counter for Cart
public static int cart_count = 0;
// Get Id for users
String getId;
// Time Interval for back button press
private static final int TIME_INTERVAL = 2000; // # milliseconds, desired time passed between two back presses.
// How long the back button has been pressed
private long backPressed;
//Getting Class Info
private static final String TAG = MainActivity.class.getSimpleName();
/** Views*/
// Toolbars
Toolbar toolbar;
// TextViews
TextView navHeaderUsername;
// ImageViews
ImageView navHeaderProfileImage;
/** Session Managing*/
UserSessionManager userSessionManager;
/** Navigation Drawer*/
//Declaring ActionBarDrawerToggle
private ActionBarDrawerToggle actionBarDrawerToggle;
//Declaring Navigation View
NavigationView navigationView;
//Declaring Drawer Layout
DrawerLayout drawerLayout;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//Creating a Session Manager for the Users
userSessionManager = new UserSessionManager(this);
userSessionManager.checkUserLogin();
//Finding Drawer Layout
drawerLayout = findViewById(R.id.drawer_layout);
//Finding Navigation View
navigationView = findViewById(R.id.navigation_view);
//Finding Toolbar
toolbar = findViewById(R.id.main_tool_bar);
//Toolbar Workings
setSupportActionBar(toolbar);
getSupportActionBar().setTitle("Home");
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
// Setting View Products Fragment
Fragment fragment = new ViewProductsFragment();
getSupportFragmentManager().beginTransaction().replace(R.id.frame_layout,fragment).commit();
//Setting ActionBarDrawerToggle to Open and Close
actionBarDrawerToggle = new ActionBarDrawerToggle(this,drawerLayout,R.string.open,R.string.close);
drawerLayout.addDrawerListener(actionBarDrawerToggle);
actionBarDrawerToggle.syncState();
// Setting Navigation Item Selected Listener for Items in Navigation View
navigationView.setNavigationItemSelectedListener(this);
/**
* app:headerLayout="#layout/layout_nav_header"
*
* Remove the above line in NavigationView because we are inflating programmatically
*
* */
View navView = navigationView.inflateHeaderView(R.layout.layout_nav_header);
//Finding Views in Navigation Header which is inside Navigation View
navHeaderUsername = navView.findViewById(R.id.nav_header_username);
navHeaderProfileImage = navView.findViewById(R.id.nav_header_profile_image);
// Parsing Username and Email
HashMap<String, String> user = userSessionManager.getUserDetails();
getId = user.get(userSessionManager.ID);
}
// Fetch User Details
private void fetchUserDetails(){
final ProgressDialog progressDialog = new ProgressDialog(this);
progressDialog.setMessage("Loading...");
//progressDialog.show();
StringRequest stringRequest = new StringRequest(Request.Method.POST, Config.FETCH_USER_DETAILS,
new Response.Listener<String>() {
#Override
public void onResponse(String response) {
progressDialog.dismiss();
Log.i(TAG, response.toString());
try {
JSONObject jsonObject = new JSONObject(response);
String success = jsonObject.getString("success");
JSONArray jsonArray = jsonObject.getJSONArray("fetch");
if (success.equals("1")) {
for (int i = 0; i < jsonArray.length();i++) {
JSONObject object = jsonArray.getJSONObject(i);
String username = object.getString("username").trim();
String email = object.getString("email").trim();
// Set Details for the Navigation Header
navHeaderUsername.setText(username);
//etProfileUsername.setText(username);
//etProfileEmail.setText(email);
}
}
} catch (JSONException e) {
e.printStackTrace();
progressDialog.dismiss();
Toast.makeText(MainActivity.this, "JSON Error fetching Details", Toast.LENGTH_SHORT).show();
Snackbar.make(getWindow().getDecorView().getRootView(),e.toString(),Snackbar.LENGTH_LONG).show();
}
}
},
new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
progressDialog.dismiss();
Toast.makeText(MainActivity.this, "Volley Error fetching Details", Toast.LENGTH_SHORT).show();
Snackbar.make(getWindow().getDecorView().getRootView(),error.toString(),Snackbar.LENGTH_LONG).show();
}
})
{
#Override
protected Map<String, String> getParams() throws AuthFailureError {
Map<String, String > params = new HashMap<>();
params.put("id", getId);
return params;
}
};
RequestQueue requestQueue = Volley.newRequestQueue(this);
requestQueue.add(stringRequest);
}
public static String numberFormatter(double d) {
DecimalFormat decimalFormat = new DecimalFormat("#,###.##");
return decimalFormat.format(d);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater menuInflater = getMenuInflater();
menuInflater.inflate(R.menu.user_toolbar_menu_items, menu);
MenuItem cartItem = menu.findItem(R.id.cart_action);
cartItem.setIcon(CartCounterConverter.convertLayoutToImage(MainActivity.this,cart_count,R.drawable.view_cart_icon));
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Check if Action Bar Drawer Toggle has been selected
if(actionBarDrawerToggle.onOptionsItemSelected(item)){
return true;
}
switch (item.getItemId()) {
case R.id.cart_action:
//startActivity(new Intent(MainActivity.this,CartActivity.class));
Fragment fragment = new CartFragment();
getSupportFragmentManager().beginTransaction().replace(R.id.frame_layout,fragment).commit();
getSupportActionBar().hide();
break;
case R.id.logout_action:
userSessionManager.logOutUser();
finish();
default:
break;
}
return super.onOptionsItemSelected(item);
}
#Override
public boolean onNavigationItemSelected(#NonNull MenuItem item) {
Fragment fragment = null;
/*switch (item.getItemId()) {
case R.id.action_category_one:
Toast.makeText(this, "Under Development", Toast.LENGTH_SHORT).show();
break;
case R.id.action_profile:
fragment = new UserProfileFragment();
break;
}*/
int id = item.getItemId();
if (id == R.id.action_view_products) {
fragment = new ViewProductsFragment();
}
// else if (id == R.id.action_receipts) {
// }
else if (id == R.id.action_profile) {
//startActivity(new Intent(MainActivity.this,UserProfileActivity.class));
fragment = new UserProfileFragment();
}
if (fragment !=null) {
FragmentManager fragmentManager = getSupportFragmentManager();
FragmentTransaction ft = fragmentManager.beginTransaction();
//R.id." " will be found in content_main.xml from the Frame Layout
ft.replace(R.id.frame_layout,fragment);
ft.commit();
}
drawerLayout.closeDrawer(GravityCompat.START);
return true;
}
#Override
public void onClick(View v) {
}
// When back button is pressed method
#Override
public void onBackPressed() {
//Check if navigation drawer is opened or closed
if (drawerLayout.isDrawerOpen(GravityCompat.START)){
drawerLayout.closeDrawer(GravityCompat.START);
}else {
if (backPressed + TIME_INTERVAL > System.currentTimeMillis()) {
super.onBackPressed();
return;
} else {
Toast.makeText(getBaseContext(), "Press back button again to exit", Toast.LENGTH_SHORT).show();
}
backPressed = System.currentTimeMillis();
}
}
#Override
protected void onResume() {
super.onResume();
fetchUserDetails();
}
// Remember to implement AddRemoveCallback Interface
#Override
public void onAddProduct() {
cart_count++;
invalidateOptionsMenu();
}
// Remember to implement AddRemoveCallback Interface
#Override
public void onRemoveProduct() {
cart_count--;
invalidateOptionsMenu();
}
}
My child fragment
package manu.apps.cartv6.Tests;
import android.os.Bundle;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.appcompat.widget.Toolbar;
import androidx.fragment.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import manu.apps.cartv6.Activities.MainActivity;
import manu.apps.cartv6.Fragments.ViewProductsFragment;
import manu.apps.cartv6.R;
/**
* A simple {#link Fragment} subclass.
*/
public class CartFragment extends Fragment {
Toolbar fragmentCartToolbar;
public CartFragment() {
// Required empty public constructor
}
#Override
public void onCreate(#Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//((MainActivity) getActivity()).getSupportActionBar().hide();
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
setHasOptionsMenu(true);
// Inflate the layout for this fragment
return inflater.inflate(R.layout.fragment_cart, container, false);
}
#Override
public void onViewCreated(#NonNull View view, #Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
fragmentCartToolbar = view.findViewById(R.id.fragment_cart_tool_bar);
((MainActivity) getActivity()).setSupportActionBar(fragmentCartToolbar);
((MainActivity) getActivity()).getSupportActionBar().setTitle("Blank Fragment");
((MainActivity) getActivity()).getSupportActionBar().setDisplayHomeAsUpEnabled(true);
((MainActivity) getActivity()).getSupportActionBar().setDisplayShowHomeEnabled(true);
final Toolbar bar = (Toolbar) getActivity().findViewById(R.id.main_tool_bar);
fragmentCartToolbar.setNavigationOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
((MainActivity) getActivity()).setSupportActionBar(bar);
//((MainActivity) getActivity()).getSupportActionBar().show();
Fragment fragment = new ViewProductsFragment();
getActivity().getSupportFragmentManager().beginTransaction().replace(R.id.frame_layout,fragment).commit();
}
});
}
}
The problem is that the moment i add setNavigationOnClickListener the Main Activity toolbar doesn't show again when i remove it, it shows perfectly
#Override
public void onResume() {
super.onResume();
((MainActivity)getActivity()).getSupportActionBar().hide();
((MainActivity) getActivity()).setSupportActionBar(fragmentCartToolbar);
((MainActivity) getActivity()).getSupportActionBar().setTitle("Blank Fragment");
((MainActivity) getActivity()).getSupportActionBar().setDisplayHomeAsUpEnabled(true);
//((MainActivity) getActivity()).getSupportActionBar().setDisplayShowHomeEnabled(true);
fragmentCartToolbar.setNavigationOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Fragment fragment = new ViewProductsFragment();
getActivity().getSupportFragmentManager().beginTransaction().replace(R.id.frame_layout,fragment).commit();
}
});
}

Please try to add below in your parent fragment's onResume(), I guess it's ViewProductsFragment from the provided code.
This will allow you to hide the action bar from the fragment itself rather than the activity.
#Override
public void onResume() {
super.onResume();
((AppCompatActivity)getActivity()).getSupportActionBar().hide();
}

ListView displays data twice

I am working on a small application to save the data of the book (such as the name of the book, the type of the book, the author of the book and the year of publication) in a database, but when the data is returned from the databases using CursorLoader It's shown twice in ListView
This is a code of AddBook activity.
package training.android.com.librarycard;
import android.app.AlertDialog;
import android.app.LoaderManager;
import android.content.ContentValues;
import android.content.CursorLoader;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.Loader;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.net.Uri;
import android.os.Bundle;
import android.support.v4.app.NavUtils;
import android.support.v7.app.AppCompatActivity;
import android.text.TextUtils;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.MotionEvent;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.EditText;
import android.widget.Spinner;
import android.widget.Toast;
import training.android.com.librarycard.Database.Database;
import training.android.com.librarycard.Database.LibraryCardContract;
public class AddBook extends AppCompatActivity
implements LoaderManager.LoaderCallbacks<Cursor> {
private static final int EXISTING_BOOK_LOADER = 0;
Spinner mBookType;
EditText mBookTitle, mBookAuthor, mBookPublishYear;
String bookType;
int position;
private boolean bookHasChanged = false;
private Uri currentBookUri;
private View.OnTouchListener touchListener = new View.OnTouchListener() {
#Override
public boolean onTouch(View v, MotionEvent event) {
bookHasChanged = true;
return false;
}
};
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_add_book);
Intent intent = getIntent();
if (intent != null) {
currentBookUri = intent.getData();
if (currentBookUri == null) {
setTitle("Add a book");
invalidateOptionsMenu();
} else {
setTitle("Edit a book");
getLoaderManager().initLoader(EXISTING_BOOK_LOADER, null, this);
}
}
mBookType = findViewById(R.id.spinner);
mBookTitle = findViewById(R.id.book_title);
mBookAuthor = findViewById(R.id.book_author);
mBookPublishYear = findViewById(R.id.publish_year);
mBookType.setOnTouchListener(touchListener);
mBookAuthor.setOnTouchListener(touchListener);
mBookTitle.setOnTouchListener(touchListener);
mBookPublishYear.setOnTouchListener(touchListener);
setupBookTypeSpinner();
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.home, menu);
return true;
}
#Override
public boolean onPrepareOptionsMenu(Menu menu) {
super.onPrepareOptionsMenu(menu);
if (currentBookUri == null) {
MenuItem menuItem = menu.findItem(R.id.action_delete);
menuItem.setVisible(false);
}
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
switch (id) {
case R.id.action_save:
setBook();
finish();
return true;
case R.id.action_delete:
showDeleteConfirmationDialog();
return true;
case android.R.id.home:
if (!bookHasChanged) {
NavUtils.navigateUpFromSameTask(AddBook.this);
return true;
}
DialogInterface.OnClickListener discardButtonClickListener
= new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
NavUtils.navigateUpFromSameTask(AddBook.this);
}
};
showUnsavedChangeDialog(discardButtonClickListener);
return true;
}
return super.onOptionsItemSelected(item);
}
private void showUnsavedChangeDialog(DialogInterface.OnClickListener discardButtonClickListener) {
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setMessage("Discard your changes and quit editing?");
builder.setPositiveButton("Discard", discardButtonClickListener);
builder.setNegativeButton("Keep editing", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
if (dialog != null)
dialog.dismiss();
}
});
AlertDialog alertDialog = builder.create();
alertDialog.show();
}
private void showDeleteConfirmationDialog() {
final AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setMessage("Delete this book ?");
builder.setPositiveButton("Delete", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
deleteBook();
}
});
builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
if (dialog != null)
dialog.dismiss();
}
});
AlertDialog alertDialog = builder.create();
alertDialog.show();
}
private void deleteBook() {
if (currentBookUri != null) {
int rowDeleted = getContentResolver().delete(currentBookUri, null, null);
if (rowDeleted == 0)
Toast.makeText(this, "Delete book failed", Toast.LENGTH_SHORT).show();
else
Toast.makeText(this, "Delete book successful", Toast.LENGTH_SHORT).show();
}
finish();
}
public void setupBookTypeSpinner() {
final ArrayAdapter<CharSequence> bookTypeAdapter = ArrayAdapter.createFromResource(
this, R.array.books_type, R.layout.support_simple_spinner_dropdown_item);
bookTypeAdapter.setDropDownViewResource(android.R.layout.simple_dropdown_item_1line);
mBookType.setAdapter(bookTypeAdapter);
mBookType.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
#Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
bookType = parent.getSelectedItem().toString();
position = parent.getSelectedItemPosition();
Log.i("BookTypeSelection", bookType+"");
}
#Override
public void onNothingSelected(AdapterView<?> parent) {
}
});
}
public void setBook() {
String bookTitle = mBookTitle.getText().toString().trim();
String bookAuthor = mBookAuthor.getText().toString().trim();
String publishYear = mBookPublishYear.getText().toString().trim();
if (currentBookUri == null && TextUtils.isEmpty(bookTitle) && TextUtils.isEmpty(bookAuthor)
&& TextUtils.isEmpty(publishYear))
return;
Database database = new Database(this);
SQLiteDatabase db = database.getWritableDatabase();
ContentValues values = new ContentValues();
values.put(LibraryCardContract.LibraryCard.COLUMN_BOOK_TITLE, bookTitle);
values.put(LibraryCardContract.LibraryCard.COLUMN_BOOK_AUTHOR, bookAuthor);
values.put(LibraryCardContract.LibraryCard.COLUMN_BOOK_PUBLISH_YEAR, publishYear);
values.put(LibraryCardContract.LibraryCard.COLUMN_BOOK_TYPE, bookType);
if (currentBookUri == null) {
Uri uri = getContentResolver().insert(LibraryCardContract.LibraryCard.CONTENT_URI, values);
if (uri == null) {
Toast.makeText(this, "Error with saving book", Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(this, "Book saved", Toast.LENGTH_SHORT).show();
}
} else {
int rowAffected = getContentResolver().update(currentBookUri, values, null, null);
if (rowAffected == 0) {
Toast.makeText(this, "Error with saving book", Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(this, "Book saved", Toast.LENGTH_SHORT).show();
}
}
db.insert(LibraryCardContract.LibraryCard.TABLE_NAME, null, values);
Toast.makeText(this, "Insert new book", Toast.LENGTH_SHORT).show();
}
#Override
public Loader<Cursor> onCreateLoader(int id, Bundle args) {
String [] projection = {
LibraryCardContract.LibraryCard.COLUMN_BOOK_TITLE,
LibraryCardContract.LibraryCard.COLUMN_BOOK_TYPE,
LibraryCardContract.LibraryCard.COLUMN_BOOK_AUTHOR,
LibraryCardContract.LibraryCard.COLUMN_BOOK_PUBLISH_YEAR };
return new CursorLoader(this,currentBookUri,projection,
null,null,null);
}
#Override
public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
if(data.moveToFirst()){
String title = data.getString(
data.getColumnIndexOrThrow(LibraryCardContract.LibraryCard.COLUMN_BOOK_TITLE));
String type = data.getString(
data.getColumnIndexOrThrow(LibraryCardContract.LibraryCard.COLUMN_BOOK_TYPE));
String publishYear = data.getString(
data.getColumnIndexOrThrow(LibraryCardContract.LibraryCard.COLUMN_BOOK_PUBLISH_YEAR));
String author = data.getString(
data.getColumnIndexOrThrow(LibraryCardContract.LibraryCard.COLUMN_BOOK_AUTHOR));
mBookTitle.setText(title);
mBookAuthor.setText(author);
mBookType.setSelection(position);
mBookPublishYear.setText(publishYear);
}
}
#Override
public void onLoaderReset(Loader<Cursor> loader) {
mBookTitle.setText("");
mBookType.setSelection(position);
mBookAuthor.setText("");
mBookPublishYear.setText("");
}
#Override
public void onBackPressed() {
if(!bookHasChanged){
super.onBackPressed();
return;
}
DialogInterface.OnClickListener discardButtonClickListener =
new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
finish();
}
};
showUnsavedChangeDialog(discardButtonClickListener);
}
}
And this is a code of Home activity that contains a listView to
display the data.
package training.android.com.librarycard;
import android.app.LoaderManager;
import android.content.ContentUris;
import android.content.CursorLoader;
import android.content.Intent;
import android.content.Loader;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.NavigationView;
import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ListView;
import java.util.ArrayList;
import java.util.List;
import training.android.com.librarycard.Database.Database;
import training.android.com.librarycard.Database.LibraryCardContract;
import training.android.com.librarycard.Models.BookCursorAdapter;
import training.android.com.librarycard.Models.BookDetail;
public class Home extends AppCompatActivity
implements NavigationView.OnNavigationItemSelectedListener, LoaderManager.LoaderCallbacks<Cursor> {
private static final int BOOK_LOADER = 0;
private ListView mBookList;
private BookCursorAdapter cursorAdapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_home);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
mBookList = findViewById(R.id.books_rv);
cursorAdapter = new BookCursorAdapter(this, null);
mBookList.setAdapter(cursorAdapter);
mBookList.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Intent intent = new Intent(Home.this, AddBook.class);
Uri currentPetUri = ContentUris.withAppendedId(LibraryCardContract.LibraryCard.CONTENT_URI, id);
intent.setData(currentPetUri);
startActivity(intent);
}
});
getLoaderManager().initLoader(BOOK_LOADER, null, this);
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent intent = new Intent(getBaseContext(), AddBook.class);
startActivity(intent);
}
});
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
drawer.addDrawerListener(toggle);
toggle.syncState();
NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
}
#Override
public void onBackPressed() {
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
if (drawer.isDrawerOpen(GravityCompat.START)) {
drawer.closeDrawer(GravityCompat.START);
} else {
super.onBackPressed();
}
}
#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, 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();
switch (id) {
case R.id.delete_all_books:
deleteAllBooks();
return true;
}
//noinspection SimplifiableIfStatement
return super.onOptionsItemSelected(item);
}
private void deleteAllBooks() {
int rowDeleted = getContentResolver().delete(LibraryCardContract.LibraryCard.CONTENT_URI,
null, null);
}
#SuppressWarnings("StatementWithEmptyBody")
#Override
public boolean onNavigationItemSelected(MenuItem item) {
// Handle navigation view item clicks here.
int id = item.getItemId();
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
drawer.closeDrawer(GravityCompat.START);
return true;
}
#Override
public Loader<Cursor> onCreateLoader(int id, Bundle args) {
String[] projection = {
LibraryCardContract.LibraryCard._ID,
LibraryCardContract.LibraryCard.COLUMN_BOOK_TITLE,
LibraryCardContract.LibraryCard.COLUMN_BOOK_AUTHOR,
LibraryCardContract.LibraryCard.COLUMN_BOOK_TYPE,
LibraryCardContract.LibraryCard.COLUMN_BOOK_PUBLISH_YEAR};
return new CursorLoader(this, LibraryCardContract.LibraryCard.CONTENT_URI,
projection,
null,
null,
null);
}
#Override
public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
cursorAdapter.swapCursor(data);
}
#Override
public void onLoaderReset(Loader<Cursor> loader) {
cursorAdapter.swapCursor(null);
}
}
> This is a code of **BookCursorAdapter** class.
package training.android.com.librarycard.Models;
import android.content.Context;
import android.database.Cursor;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.CursorAdapter;
import android.widget.TextView;
import training.android.com.librarycard.Database.LibraryCardContract;
import training.android.com.librarycard.R;
/**
* Created by Hassan on 4/9/2018.
*/
public class BookCursorAdapter extends CursorAdapter {
public BookCursorAdapter(Context context, Cursor c) {
super(context, c, 0);
}
#Override
public View newView(Context context, Cursor cursor, ViewGroup parent) {
return LayoutInflater.from(context)
.inflate(R.layout.book_list,parent,false);
}
#Override
public void bindView(View view, Context context, Cursor cursor) {
TextView bookTitle = view.findViewById(R.id.book_name_tv);
TextView bookAuthor = view.findViewById(R.id.author_tv);
TextView bookType = view.findViewById(R.id.book_type_tv);
TextView publishYear = view.findViewById(R.id.publish_year_tv);
String title = cursor.getString(
cursor.getColumnIndexOrThrow(LibraryCardContract.LibraryCard.COLUMN_BOOK_TITLE));
String type = cursor.getString(
cursor.getColumnIndexOrThrow(LibraryCardContract.LibraryCard.COLUMN_BOOK_TYPE));
String year = cursor.getString(
cursor.getColumnIndexOrThrow(LibraryCardContract.LibraryCard.COLUMN_BOOK_PUBLISH_YEAR));
String author = cursor.getString(
cursor.getColumnIndexOrThrow(LibraryCardContract.LibraryCard.COLUMN_BOOK_AUTHOR));
bookAuthor.setText(author);
bookTitle.setText(title);
bookType.setText(type);
publishYear.setText(year);
}
#Override
public int getCount() {
return super.getCount();
}
}
Screenshot of the application
enter image description here

onBackPressed() unfortunately app has stopped in android phone

I am developing an eCommerce application where most of the java class file using Async Task for fetching data from server and I am using fragment in all java class . My problem is that when I click OnBackPressed it shows error in Async Task line because it takes some time interval again to fetch data from server..
MainActivity.java
package com.prashant;
import android.app.SearchManager;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.SharedPreferences;
import android.graphics.Color;
import android.graphics.drawable.ColorDrawable;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.view.MenuItemCompat;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.SearchView;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.os.Handler;
import android.widget.GridView;
import android.widget.ProgressBar;
import android.widget.RelativeLayout;
import android.widget.TextView;
import android.widget.Toast;
import java.util.ArrayList;
import java.util.List;
public class MainActivity extends AppCompatActivity implements android.support.v7.app.ActionBar.OnNavigationListener {
TextView txtView;
private static MainActivity sMainActivity;
ProgressBar prgLoading;
RelativeLayout drawerPane;
DrawerLayout drawerLayout;
GridView lvNav;
TextView Customer_name;
TextView Customer_email;
TextView Customer_mob;
List<NavItem> listNavItems;
List<Fragment> listFragment;
private Boolean exit = false;
ActionBarDrawerToggle actionBarDrawerToggle;
public int hot_number = Constants.ProductCart_Id.size();
private TextView ui_hot = null;
private boolean mNaviFirstHit = true;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
sMainActivity = this;
// Styling Action Bar
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setBackgroundDrawable(new ColorDrawable(Color.rgb(7,112,200)));
drawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
//Getting Session Information Of Customer
String MyPREFERENCES = "CustomerData";
SharedPreferences sharedpreferences =getSharedPreferences(MyPREFERENCES, Context.MODE_PRIVATE);
Constants.Customer_FirstName= sharedpreferences.getString("Customer_FirstName","");
Constants.Customer_LastName=sharedpreferences.getString("Customer_LastName", "");
Constants.Customer_MobileNo=sharedpreferences.getString("Customer_MobileNo", "");
Constants.Customer_Id=sharedpreferences.getInt("Customer_Id", 0);
Constants.Customer_Email=sharedpreferences.getString("Customer_Email", "");
Customer_email.setText(Constants.Customer_Email);
//Asigning FRagment names of sidebar
listNavItems = new ArrayList<NavItem>();
listNavItems.add(new NavItem("Home", null, R.drawable.pras));
for(int i=0;i<Constants.Category_name.size();i++){
listNavItems.add(new NavItem(Constants.Category_name.get(i),null,R.drawable.teju));
}
NavListAdapter navListAdapter = new NavListAdapter(getApplicationContext(), R.layout.item_nav_list, listNavItems);
lvNav.setAdapter(navListAdapter);
listFragment = new ArrayList<Fragment>();
listFragment.add(new MyHome());
for(int i=0;i<Constants.Category_name.size();i++){
listFragment.add(new ProductsListFragment());
}
listFragment.add(new MyHome());
listFragment.add(new ActivityCart());
listFragment.add(new LoginFragment());
listFragment.add(new MyAbout());
//Asigning FRagment names of sidebar
//Saving fragment data as constants for my home categories
Constants.listNavItems=listNavItems;
Constants.listFragment=listFragment;
//Saving fragment data as constants for my home categories
//Load first fragment as default:
FragmentManager fragmentManager = getSupportFragmentManager();
fragmentManager.beginTransaction().replace(R.id.main_content, listFragment.get(0)).commit();
setTitle(listNavItems.get(0).getTitle());
lvNav.setItemChecked(0, true);
drawerLayout.closeDrawer(drawerPane);
// create listener for drawer layout
actionBarDrawerToggle = new ActionBarDrawerToggle(this, drawerLayout, R.string.drawer_open , R.string.drawer_close)
{
#Override
public void onDrawerOpened(View drawerView)
{
invalidateOptionsMenu();
super.onDrawerOpened(drawerView);
}
#Override
public void onDrawerClosed(View drawerView)
{
invalidateOptionsMenu();
super.onDrawerClosed(drawerView);
}
};
drawerLayout.setDrawerListener(actionBarDrawerToggle);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
final Menu mMenu = menu;
MenuInflater mif = getMenuInflater();
mif.inflate(R.menu.actionbar_icon_menu, menu);
// Cart Icon in Action Bar
final View menu_hotlist = menu.findItem(R.id.cart_icon).getActionView();
ui_hot = (TextView) menu_hotlist.findViewById(R.id.hotlist_Cart_hot);
updateHotCount(hot_number);
menu_hotlist.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Constants.lastDetails = false;
FragmentManager fragmentManager = getSupportFragmentManager();
ActivityCart cart = new ActivityCart();
fragmentManager.beginTransaction().replace(R.id.main_content, cart).commit();
setTitle("Cart");
drawerLayout.closeDrawer(drawerPane);
}
});
return super.onCreateOptionsMenu(menu);
}
#Override
public boolean onOptionsItemSelected(MenuItem item){
if(actionBarDrawerToggle.onOptionsItemSelected(item))
return true;
// Take appropriate action for each action item click
switch (item.getItemId()) {
case R.id.cart_icon:
// search action
FragmentManager fragmentManager = getSupportFragmentManager();
ActivityCart cart = new ActivityCart();
fragmentManager.beginTransaction().replace(R.id.main_content, cart).commit();
setTitle("Cart");
drawerLayout.closeDrawer(drawerPane);
return true;
case R.id.action_search:
return true;
}
return super.onOptionsItemSelected(item);
}
#Override
protected void onPostCreate(Bundle savedInstanceState) {
super.onPostCreate(savedInstanceState);
actionBarDrawerToggle.syncState();
}
#Override
public void onBackPressed() {
if (getFragmentManager().getBackStackEntryCount() >0) {
getFragmentManager().popBackStack();
} else {
super.onBackPressed();
}
}
#Override
public boolean onNavigationItemSelected(int itemPosition, long itemId) {
if (mNaviFirstHit) {
mNaviFirstHit = false;
return true;
}
else {
if(itemPosition == 0)
Constants.isCallParent = true;
else
Constants.isCallParent = false;
Constants.SubCatposition = itemPosition;
ProductsListFragment productsListFragment = new ProductsListFragment();
FragmentManager fragmentManager = getSupportFragmentManager();
fragmentManager.beginTransaction().replace(R.id.main_content, productsListFragment).commit();
//lvNav.setItemChecked(position, true);
drawerLayout.closeDrawer(drawerPane);
//Toast.makeText(this, "Clicked at: " + itemPosition, Toast.LENGTH_LONG).show();
//mNaviFirstHit = true;
return true;
}
}
public void setLoginDetails(){
Customer_email.setText(Constants.Customer_Email);
Customer_name.setText("Welcome, " + Constants.Customer_FirstName);
Customer_name.setText(Constants.Customer_LastName);
}
}
ProductListFragment.java
package com.prashant;
import android.app.AlertDialog;
import android.app.ProgressDialog;
import android.content.Intent;
import android.os.AsyncTask;
import android.support.v4.app.Fragment;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.FragmentManager;
import android.support.v7.app.AppCompatActivity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.GridView;
import org.ksoap2.SoapEnvelope;
import org.ksoap2.serialization.SoapObject;
import org.ksoap2.serialization.SoapSerializationEnvelope;
import org.ksoap2.transport.HttpTransportSE;
import org.xmlpull.v1.XmlPullParserException;
import java.io.IOException;
import java.util.ArrayList;
/**
* Created by prashant.
*/
public class ProductsListFragment extends Fragment {
ProgressDialog pdialog;
View v;
Button sort,filter;
//ListView list;
GridView list;
LazyImageLoadAdapter adapter;
private static ProductsListFragment sProductsListFragment;
// Title navigation Spinner data
private ArrayList<SpinnerNavItem> navSpinner;
// Navigation adapter
private TitleNavigationAdapter titleNavigationAdapter;
#Override
public void onCreate(#Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//((AppCompatActivity) getActivity()).getSupportActionBar().setSubtitle(null);
//((MainActivity)getActivity()).actionBarDrawerToggle.setDrawerIndicatorEnabled(true);
// Action Bar
((MainActivity)getActivity()).getSupportActionBar().setDisplayShowTitleEnabled(false);
((MainActivity)getActivity()).getSupportActionBar().setNavigationMode(((MainActivity) getActivity()).getSupportActionBar().NAVIGATION_MODE_LIST);
}
#Override
public View onCreateView(LayoutInflater inflater,#Nullable ViewGroup container,#Nullable Bundle savedInstanceState) {
v = inflater.inflate(R.layout.productlistfragment, container, false);
sProductsListFragment = this;
list=(GridView)v.findViewById(R.id.list);
sort = (Button) v.findViewById(R.id.btn_sort);
sort.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
startActivity(new Intent(getActivity(),Pop.class));
}
});
//clearData();
return v;
}
#Override
public void onResume() {
super.onResume();
((AppCompatActivity) getActivity()).getSupportActionBar().setSubtitle(null);
((MainActivity)getActivity()).actionBarDrawerToggle.setDrawerIndicatorEnabled(true);
}
#Override
public void onPause() {
super.onPause();
((MainActivity)getActivity()).getSupportActionBar().setDisplayShowTitleEnabled(true);
}
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
Constants.cartEntry=0;
//check Product Description fragment is called or not
if (!Constants.lastDetails) {
clearData();
new getDataTask().execute();
}
else{
String[] images=new String[Constants.Product_image.size()];
images=Constants.Product_image.toArray(images);
adapter = new LazyImageLoadAdapter(getActivity(), images);
//Set adapter to listview
list.setAdapter(adapter);
Constants.lastDetails = false;
}
}
// clear arraylist variables before used
void clearData(){
Constants.Product_ID.clear();
Constants.Product_name.clear();
Constants.Product_price.clear();
Constants.Product_image.clear();
Constants.Product_qty.clear();
Constants.Product_specialPrice.clear();
Constants.Product_desc.clear();
}
#Override
public void onDestroy()
{
// Remove adapter refference from list
//list.setAdapter(null);
//Refresh cache directory downloaded images
//adapter.imageLoader.clearCache();
//adapter.notifyDataSetChanged();
super.onDestroy();
}
public View.OnClickListener listener=new View.OnClickListener(){
#Override
public void onClick(View arg0) {
//Refresh cache directory downloaded images
adapter.imageLoader.clearCache();
adapter.notifyDataSetChanged();
}
};
public void onItemClick(int mPosition)
{
/*
Intent intent = new Intent(getActivity(), ProductDescription.class);
intent.putExtra("descposition", mPosition);
startActivity(intent);*/
Constants.product_position = mPosition;
ProductDescription productDescription=new ProductDescription();
getActivity().getSupportFragmentManager().beginTransaction().replace(R.id.main_content, productDescription, null).addToBackStack("productDescription").commit();
//((AppCompatActivity) getActivity()).getSupportActionBar().setSubtitle(Constants.Product_name.get(mPosition));
getActivity().setTitle("Product Details");
}
// Image urls used in LazyImageLoadAdapter.java file
public class getDataTask extends AsyncTask<Void, Void, Void> {
#Override
protected void onPreExecute() {
super.onPreExecute();
if (pdialog==null){
pdialog=new ProgressDialog(getActivity());
pdialog.setMessage("Loading...");
pdialog.setCanceledOnTouchOutside(getRetainInstance());
pdialog.setCancelable(false);
pdialog.show();
}
}
#Override
protected Void doInBackground(Void... arg0) {
// TODO Auto-generated method stub
// parse json data from server in background
parseJSONData();
return null;
}
#Override
protected void onPostExecute(Void result) {
// TODO Auto-generated method stub
// Create custom adapter for listview
String[] images=new String[Constants.Product_image.size()];
images=Constants.Product_image.toArray(images);
adapter = new LazyImageLoadAdapter(getActivity(), images);
//Set adapter to listview
list.setAdapter(adapter);
if (!Constants.isSubCategory) {
Constants.isSubCategory = true;
// Spinner title navigation data
navSpinner = new ArrayList<SpinnerNavItem>();
navSpinner.add(new SpinnerNavItem(Constants.Category_name.get(Constants.position - 1), R.drawable.icon));
for (int i = 0; i < Constants.SubCategory_ID.size(); i++) {
navSpinner.add(new SpinnerNavItem(Constants.SubCategory_name.get(i), R.drawable.icon));
}
// title drop down adapter
titleNavigationAdapter = new TitleNavigationAdapter(getActivity(), navSpinner);
// assigning the spinner navigation
((MainActivity) getActivity()).getSupportActionBar().setListNavigationCallbacks(titleNavigationAdapter, ((MainActivity) getActivity()));
}
if (pdialog.isShowing()){
pdialog.dismiss();
pdialog=null;
}
if (Constants.Product_ID.isEmpty()){
// Toast.makeText(getActivity(), "No products found!!Check your internet connection!!", Toast.LENGTH_LONG).show();
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
builder.setTitle("No Product Found!!").setMessage("Slow Internet/Check Your Internet Settings").create().show();
}
/*for (int i = 0; i < Constants.Product_ID.size(); i++) {
Toast.makeText(getActivity(), "__" + Constants.Product_ID.get(i) + "__" + i, Toast.LENGTH_SHORT).show();
}*/
// if internet connection and data available show data on list
// otherwise, show alert text
}
}
// method to parse json data from server
public void parseJSONData(){
SoapObject request = new SoapObject(Constants.NAMESPACE, "catalogCategoryAssignedProducts");
String Catid;
// add paramaters and values
request.addProperty("sessionId", Constants.sessionId);
if ((!Constants.isSubCategory) || Constants.isCallParent) {
Constants.isCallParent = false;
request.addProperty("categoryId", String.valueOf(Constants.Category_ID.get(Constants.position - 1)));
Catid=String.valueOf(Constants.Category_ID.get(Constants.position - 1));
}
else {
request.addProperty("categoryId", String.valueOf(Constants.SubCategory_ID.get(Constants.SubCatposition - 1)));
Catid=String.valueOf(Constants.SubCategory_ID.get(Constants.SubCatposition - 1));
}
api_calls call=new api_calls();
call.getCategoryProducts(Catid);
if (!Constants.isSubCategory) {
Constants.SubCategory_ID.clear();
Constants.SubCategory_name.clear();
parseJSONDataSubCategory();
}
}
// method to parse json data from server
public void parseJSONDataSubCategory(){
try {
SoapObject request = new SoapObject(Constants.NAMESPACE, "catalogCategoryTree");
// add paramaters and values
request.addProperty("sessionId", Constants.sessionId);
request.addProperty("parentId", Constants.Category_ID.get(Constants.position-1));
SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);
envelope.dotNet = true;
envelope.setOutputSoapObject(request);
//Web method call
HttpTransportSE androidHttpTransport = new HttpTransportSE(Constants.URL);
androidHttpTransport.debug = true;
androidHttpTransport.call("", envelope);
//get the response
SoapObject result2 = (SoapObject) envelope.getResponse();
SoapObject pii2 = (SoapObject) result2.getProperty(5);
for (int i = 0; i < pii2.getPropertyCount(); i++) {
//JSONObject object = data.getJSONObject(i);
SoapObject pii = (SoapObject)pii2.getProperty(i);
//JSONObject category = object.getJSONObject("Category");
Constants.SubCategory_ID.add(Long.parseLong(pii.getProperty(0).toString()));
Constants.SubCategory_name.add(pii.getProperty(2).toString());
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (XmlPullParserException e) {
e.printStackTrace();
}
}
// Making Sub Drawer for Sub Category
public static ProductsListFragment getInstance() {
return sProductsListFragment;
}
public void onBackPressed()
{
FragmentManager fm = getActivity().getSupportFragmentManager();
fm.popBackStack();
}
}
Logcat
02-11 12:39:57.838 12954-14579/? E/AndroidRuntime: FATAL EXCEPTION: AsyncTask #5
Process: com.softonetech.www.takenick, PID: 12954
java.lang.RuntimeException: An error occurred while executing doInBackground()
at android.os.AsyncTask$3.done(AsyncTask.java:309)
at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:354)
at java.util.concurrent.FutureTask.setException(FutureTask.java:223)
at java.util.concurrent.FutureTask.run(FutureTask.java:242)
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:234)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588)
at java.lang.Thread.run(Thread.java:818)
Caused by: java.lang.ArrayIndexOutOfBoundsException: length=12; index=-1
at java.util.ArrayList.get(ArrayList.java:310)
at com.prashant.ProductsListFragment.parseJSONData(ProductsListFragment.java:250)
at com.prashant.ProductsListFragment$getDataTask.doInBackground(ProductsListFragment.java:185)
at com.prashant.ProductsListFragment$getDataTask.doInBackground(ProductsListFragment.java:167)
at android.os.AsyncTask$2.call(AsyncTask.java:295)
at java.util.concurrent.FutureTask.run(FutureTask.java:237)
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:234) 
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113) 
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588) 
at java.lang.Thread.run(Thread.java:818) 

try cancelling your Async task execution during onBackPressed()
Declare:
Public getDataTask asyncFetchData;
asyncFetchData = new getDataTask();
asyncFetchData.execute();
Now in your Fragment:
#Override
public void onViewCreated(View view, Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
getView().setFocusableInTouchMode(true);
getView().requestFocus();
getView().setOnKeyListener(new View.OnKeyListener() {
#Override
public boolean onKey(View v, int keyCode, KeyEvent event) {
if (event.getAction() == KeyEvent.ACTION_DOWN) {
if (keyCode == KeyEvent.KEYCODE_BACK) {
if (asyncFetchData!= null)
asyncFetchData.cancel(true);
Toast.makeText(getActivity(), "Back pressed...", Toast.LENGTH_SHORT).show();
return true;
}
}
return false;
}
});
}
Also in doInBackground notify the AsyncTask to cancel execution
#Override
protected Void doInBackground(Void... arg0) {
// TODO Auto-generated method stub
// parse json data from server in background
parseJSONData();
if (isCancelled()) break;
return null;
}

Two activities sending data to each other

Two activities are sending data to each other.
The first activity has a custom list view. The second has one text view and three buttons to increase and decrease a value.
When I click on the first activity, the second activity opens. The second activity increases the text view value and clicked the button. Data goes to the first activity. Same process again.
My problem is that the total value is not displayed in the first activity.
How can i show all increase and decrease values from the second activity in the first activity?
First activity's code:
package com.firstchoicefood.phpexpertgroup.firstchoicefoodin;
import android.app.ActionBar;
import android.app.ProgressDialog;
import android.content.Intent;
import android.content.SharedPreferences;
import android.graphics.Color;
import android.graphics.drawable.ColorDrawable;
import android.os.AsyncTask;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ImageButton;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
import android.app.Activity;
import com.firstchoicefood.phpexpertgroup.firstchoicefoodin.bean.ListModel;
import com.firstchoicefood.phpexpertgroup.firstchoicefoodin.json.JSONfunctions;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.net.URLEncoder;
import java.util.ArrayList;
import java.util.Arrays;
public class DetaisRESTActivity extends Activity {
String messagevaluename,valueid,valueid1,valuename,pos;
public String countString=null;
String nameofsubmenu;
public int count=0;
public String message=null;
public String message1=null;
JSONObject jsonobject;
JSONArray jsonarray;
ListView listview;
ArrayList aa;
public SharedPreferences.Editor edit;
public TextView mTitleTextView;
public ImageButton imageButton;
ListAdapterAddItems adapter;
public TextView restaurantname = null;
public TextView ruppees = null;
ProgressDialog mProgressDialog;
ArrayList<ListModel> arraylist;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_detais_rest);
ActionBar actionBar = getActionBar();
actionBar.setDisplayHomeAsUpEnabled(true);
actionBar.setBackgroundDrawable(new ColorDrawable(Color.parseColor("#ff0000")));
SharedPreferences preferences=getSharedPreferences("temp1", 1);
// SharedPreferences.Editor editor = preferences.edit();
int na=preferences.getInt("COUNTSTRING1",0);
Log.i("asasassas",""+na);
LayoutInflater mInflater = LayoutInflater.from(this);
View mCustomView = mInflater.inflate(R.layout.titlebar, null);
mTitleTextView = (TextView) mCustomView.findViewById(R.id.textView123456789);
imageButton = (ImageButton) mCustomView
.findViewById(R.id.imageButton2);
imageButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Toast.makeText(getApplicationContext(), "Refresh Clicked!",
Toast.LENGTH_LONG).show();
Intent i=new Intent(DetaisRESTActivity.this,TotalPriceActivity.class);
startActivity(i);
}
});
actionBar.setCustomView(mCustomView);
actionBar.setDisplayShowCustomEnabled(true);
// SqliteControllerSqliteController db = new SqliteControllerSqliteController(QuentityActivity.this);
// Reading all contacts
/*
Log.d("Reading: ", "Reading all contacts..");
List<Contact> contacts = db.getAllContacts();
for (Contact cn : contacts) {
String log = "Id: "+cn.getID()+" ,Name: " + cn.getName() + " ,Phone: " +
cn.getPhoneNumber();
// Writing Contacts to log
Log.d("Name: ", log);
}
*/
Intent intent = getIntent();
// get the extra value
valuename = intent.getStringExtra("restaurantmenuname");
valueid = intent.getStringExtra("restaurantmenunameid");
valueid1 = intent.getStringExtra("idsrestaurantMenuId5");
//totalamount = intent.getStringExtra("ruppees");
Log.i("valueid",valueid);
Log.i("valuename",valuename);
Log.i("valueid1",valueid1);
// Log.i("totalamount",totalamount);
new DownloadJSON().execute();
}
// DownloadJSON AsyncTask
private class DownloadJSON extends AsyncTask<Void,Void,Void> {
#Override
protected void onPreExecute() {
super.onPreExecute();
// Create a progressdialog
mProgressDialog = new ProgressDialog(DetaisRESTActivity.this);
// Set progressdialog title
mProgressDialog.setTitle("Android JSON Parse Tutorial");
// Set progressdialog message
mProgressDialog.setMessage("Loading...");
mProgressDialog.setIndeterminate(false);
// Show progressdialog
mProgressDialog.show();
Toast.makeText(DetaisRESTActivity.this, "Successs", Toast.LENGTH_LONG).show();
}
#Override
protected Void doInBackground(Void... params) {
// Create an array
arraylist = new ArrayList<ListModel>();
// Retrieve JSON Objects from the given URL address
// Log.i("123",value1);
jsonobject = JSONfunctions.getJSONfromURL("http://firstchoicefood.in/fcfapiphpexpert/phpexpert_restaurantMenuItem.php?r=" + URLEncoder.encode(valuename) + "&resid=" + URLEncoder.encode(valueid1) + "&RestaurantCategoryID=" + URLEncoder.encode(valueid) + "");
try {
// Locate the array name in JSON
jsonarray = jsonobject.getJSONArray("RestaurantMenItems");
Log.i("1234",""+jsonarray);
for (int i = 0; i < jsonarray.length(); i++) {
jsonobject = jsonarray.getJSONObject(i);
ListModel sched = new ListModel();
sched.setId(jsonobject.getString("id"));
sched.setProductName(jsonobject.getString("RestaurantPizzaItemName"));
sched.setPrice(jsonobject.getString("RestaurantPizzaItemPrice"));
arraylist.add(sched);
}
} catch (JSONException e) {
Log.e("Error", e.getMessage());
e.printStackTrace();
}
return null;
}
#Override
protected void onPostExecute(Void args) {
// Locate the listview in listview_main.xml
listview = (ListView) findViewById(R.id.listViewdetails);
adapter = new ListAdapterAddItems();
listview.setAdapter(adapter);
// Close the progressdialog
mProgressDialog.dismiss();
adapter.notifyDataSetChanged();
listview.setOnItemClickListener(new AdapterView.OnItemClickListener()
{
#Override
public void onItemClick(AdapterView<?> arg0, View arg1, int position, long arg3)
{
// Get Person "behind" the clicked item
ListModel p =(ListModel)listview.getItemAtPosition(position);
// Log the fields to check if we got the info we want
Log.i("SomeTag",""+p.getId());
//String itemvalue=(String)listview.getItemAtPosition(position);
Log.i("SomeTag", "Persons name: " + p.getProductName());
Log.i("SomeTag", "Ruppees: " + p.getPrice());
Toast toast = Toast.makeText(getApplicationContext(),
"Item " + (position + 1),
Toast.LENGTH_SHORT);
toast.setGravity(Gravity.BOTTOM|Gravity.CENTER_HORIZONTAL, 0, 0);
toast.show();
Log.i("postititi",""+position);
Intent intent=new Intent(DetaisRESTActivity.this,QuentityActivity.class);
intent.putExtra("quentity",countString);
intent.putExtra("valueid",valueid);
intent.putExtra("valuename",valuename);
intent.putExtra("valueid1",valueid1);
intent.putExtra("id",p.getId());
intent.putExtra("name",p.getProductName());
intent.putExtra("price",p.getPrice());
startActivityForResult(intent,2);
// startActivity(intent);
}
});
}
}
// Call Back method to get the Message form other Activity
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data)
{
super.onActivityResult(requestCode, resultCode, data);
// check if the request code is same as what is passed here it is 2
if(requestCode==2)
{
pos=data.getStringExtra("POSITION");
message=data.getStringExtra("MESSAGE");
message1=data.getStringExtra("COUNTSTRING");
messagevaluename=data.getStringExtra("VALUENAME");
nameofsubmenu=data.getStringExtra("name");
Log.i("xxxxxxxxxxx",message);
Log.i("xxxxxxxxxxx1234",pos);
Log.i("xxxxxxxxxxx5678count",message1);
Log.i("messagevaluename",messagevaluename);
Log.i("submenu",nameofsubmenu);
//ruppees.setText(message);
//editor.putInt("count",na);
//editor.commit();
//Log.i("asasassasasdsasdasd",""+na);
// mTitleTextView.setText(Arrays.toString(message1));
mTitleTextView.setText(message1);
imageButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Toast.makeText(getApplicationContext(), message,
Toast.LENGTH_LONG).show();
Intent i=new Intent(DetaisRESTActivity.this,TotalPriceActivity.class);
i.putExtra("count",message1);
i.putExtra("submenu",nameofsubmenu);
i.putExtra("ruppees",message);
i.putExtra("id",pos);
i.putExtra("messagevaluename",messagevaluename);
startActivity(i);
}
});
}
}
//==========================
class ListAdapterAddItems extends ArrayAdapter<ListModel>
{
ListAdapterAddItems(){
super(DetaisRESTActivity.this,android.R.layout.simple_list_item_1,arraylist);
//imageLoader = new ImageLoader(MainActivity.this);
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
final ViewHolder holder;
if(convertView == null){
LayoutInflater inflater = getLayoutInflater();
convertView = inflater.inflate(R.layout.cartlistitem, null);
holder = new ViewHolder(convertView);
convertView.setTag(holder);
}else{
holder = (ViewHolder)convertView.getTag();
}
holder.populateFrom(arraylist.get(position));
// arraylist.get(position).getPrice();
return convertView;
}
}
class ViewHolder {
ViewHolder(View row) {
restaurantname = (TextView) row.findViewById(R.id.rastaurantnamedetailsrestaurant);
ruppees = (TextView) row.findViewById(R.id.rastaurantcuisinedetalsrestaurant);
}
// Notice we have to change our populateFrom() to take an argument of type "Person"
void populateFrom(ListModel r) {
restaurantname.setText(r.getProductName());
ruppees.setText(r.getPrice());
}
}
//=============================================================
#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_detais_rest, 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.
return super.onOptionsItemSelected(item);
}
public void OnPause(){
super.onPause();
}
}
Second activity's code:
package com.firstchoicefood.phpexpertgroup.firstchoicefoodin;
import android.app.ActionBar;
import android.app.Activity;
import android.app.ProgressDialog;
import android.content.Intent;
import android.content.SharedPreferences;
import android.graphics.Color;
import android.graphics.drawable.ColorDrawable;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v4.app.FragmentManager;
import android.util.Log;
import android.view.Gravity;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ImageButton;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
import com.firstchoicefood.phpexpertgroup.firstchoicefoodin.bean.CARTBean;
import com.firstchoicefood.phpexpertgroup.firstchoicefoodin.bean.ListModel;
import com.firstchoicefood.phpexpertgroup.firstchoicefoodin.database.SqliteController;
public class QuentityActivity extends Activity {
String value=null;
public String TotAmt=null;
String[] cccc;
ImageButton positive,negative;
String position;
static int count = 1;
int tot_amt = 0;
public String countString=null;
String name,price;
String valueid,valueid1,valuename;
public TextView ruppees,submenuname,totalruppees,quantity,addtocart;
SharedPreferences preferences;
SharedPreferences.Editor editor;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_quentity);
ActionBar actionBar = getActionBar();
// Enabling Up / Back navigation
actionBar.setDisplayHomeAsUpEnabled(true);
actionBar.setBackgroundDrawable(new ColorDrawable(Color.parseColor("#ff0000")));
preferences = getSharedPreferences("temp1",1);
editor = preferences.edit();
Intent intent = getIntent();
// get the extra value
value = intent.getStringExtra("quentity");
valuename = intent.getStringExtra("valuename");
valueid = intent.getStringExtra("valueid");
valueid1 = intent.getStringExtra("valueid1");
name=intent.getStringExtra("name");
price=intent.getStringExtra("price");
position=intent.getStringExtra("id");
quantity=(TextView)findViewById(R.id.rastaurantcuisinedetalsrestaurantquantity);
totalruppees=(TextView)findViewById(R.id.rastaurantnamequentitytotal1);
submenuname=(TextView)findViewById(R.id.rastaurantnamesubmenuquentity);
ruppees=(TextView)findViewById(R.id.rastaurantnamequentity1);
positive=(ImageButton)findViewById(R.id.imageButtonpositive);
negative=(ImageButton)findViewById(R.id.imageButtonnegative);
addtocart=(TextView)findViewById(R.id.textViewaddtocart);
buttonclick();
addtocart();
submenuname.setText(name);
ruppees.setText(price);
totalruppees.setText(price);
// new DownloadJSON().execute();
}
public void buttonclick(){
positive.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
String totalAmtString = ruppees.getText().toString();
int totAmount = Integer.parseInt(totalAmtString);
//count = Integer.parseInt(getString);
count++;
editor.putInt("COUNTSTRING1", count);
editor.commit();
editor.clear();
Log.i("sunder sharma",""+count);
countString= String.valueOf(count);
tot_amt = totAmount * count;
TotAmt = String.valueOf(tot_amt);
totalruppees.setText(TotAmt);
quantity.setText(countString);
}
});
negative.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
String totalAmtString = ruppees.getText().toString();
int totAmount = Integer.parseInt(totalAmtString);
if (count > 1)
count--;
editor.putInt("COUNTSTRING1", count);
editor.commit();
countString = String.valueOf(count);
tot_amt = totAmount * count;
TotAmt = String.valueOf(tot_amt);
totalruppees.setText(TotAmt);
quantity.setText(countString);
}
});
}
public void addtocart(){
addtocart.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
/* Log.i("valueid",valueid);
Log.i("valuename",valuename);
Log.i("valueid1",valueid1);
Log.i("name",name);
Log.i("price",price);
Log.i("id1",position);
SqliteController db = new SqliteController(QuentityActivity.this);
db.insertStudent(new CARTBean(position,name,price,countString,TotAmt));
*/
Intent intent=new Intent();
intent.putExtra("MESSAGE",TotAmt);
intent.putExtra("POSITION",position);
intent.putExtra("COUNTSTRING",countString);
intent.putExtra("VALUENAME",valuename);
intent.putExtra("name",name);
setResult(2,intent);
finish();//finishing activity
}
});
}
#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_quentity, 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);
}
}

Collect the data from second activity and put into below intent .Then you will receive first activity.
Intent myIntent = new Intent(secondActivity.this, firstActivity.class);
myIntent.putExtra("COUNTSTRING", CountString); //add data
startActivity(myIntent);

navigation drawer not working after asynctask

I am using navigation drawer with asynctask in one of the fragments. As soon as I click the element in navigation drawer to start that fragment, my navigation drawer stops working even after the asynctask is finished. I am able to click on navigation drawer and open it , but whenever I click on some other item in navigation drawer, it just closes without loading that fragment associated with that item in nav drawer.
main activity code:
package com.example.home;
import android.support.v4.app.ActionBarDrawerToggle;
import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import java.io.File;
import java.io.IOException;
import java.net.HttpCookie;
import java.net.URI;
import java.net.URISyntaxException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Date;
import java.util.List;
import java.util.Locale;
import org.apache.http.cookie.Cookie;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import com.example.fmapp.R;
import com.example.fmapp.StartActivity;
import com.example.fmapp.R.id;
import com.example.fmapp.R.layout;
import com.example.fmapp.R.menu;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.os.Environment;
import android.os.Parcelable;
import android.provider.DocumentsContract;
import android.provider.MediaStore;
import android.annotation.SuppressLint;
import android.app.ActionBar;
import android.app.Activity;
import android.app.Fragment;
import android.app.FragmentManager;
import android.content.ContentUris;
import android.content.Context;
import android.content.Intent;
import android.content.res.Configuration;
import android.database.Cursor;
import android.util.Log;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.ProgressBar;
import android.widget.Spinner;
import android.widget.SpinnerAdapter;
#SuppressLint("NewApi")
public class Home extends Activity implements ActionBar.OnNavigationListener{
private DrawerLayout mDrawerLayout;
private ListView mDrawerList;
private ActionBarDrawerToggle mDrawerToggle;
private CharSequence mDrawerTitle;
private CharSequence mTitle;
private String[] mDrawerTitles;
static ProgressBar bar;
private String mCurrentPhotoPath;
private final static int FILECHOOSER_RESULTCODE=1;
//public AsyncHttpUpload uploadThread = null;
public ArrayAdapter<String> adapter = null;
#SuppressLint("NewApi")
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_home);
Log.i("start","started");
/*
if ((savedInstanceState != null) && (savedInstanceState.getString("currPath")) != null){
mCurrentPhotoPath = savedInstanceState.getString("currPath");
}
*/
bar = (ProgressBar) this.findViewById(R.id.progressBar);
ActionBar actionBar = getActionBar();
actionBar.setDisplayShowTitleEnabled(true);
if (UserInfo.userId == null){
//fetchUserData();
}
else{
//UserInfo.populateSpinner(adapter);
}
mTitle = mDrawerTitle = getTitle();
mDrawerTitles = getResources().getStringArray(R.array.planets_array);
mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
mDrawerList = (ListView) findViewById(R.id.left_drawer);
// set a custom shadow that overlays the main content when the drawer opens
mDrawerLayout.setDrawerShadow(R.drawable.drawer_shadow, GravityCompat.START);
// set up the drawer's list view with items and click listener
mDrawerList.setAdapter(new ArrayAdapter<String>(this,
R.layout.drawer_list_item, mDrawerTitles));
mDrawerList.setOnItemClickListener(new DrawerItemClickListener());
// enable ActionBar app icon to behave as action to toggle nav drawer
getActionBar().setDisplayHomeAsUpEnabled(true);
getActionBar().setHomeButtonEnabled(true);
// ActionBarDrawerToggle ties together the the proper interactions
// between the sliding drawer and the action bar app icon
mDrawerToggle = new ActionBarDrawerToggle(
this, /* host Activity */
mDrawerLayout, /* DrawerLayout object */
R.drawable.ic_drawer, /* nav drawer image to replace 'Up' caret */
R.string.drawer_open, /* "open drawer" description for accessibility */
R.string.drawer_close /* "close drawer" description for accessibility */
) {
public void onDrawerClosed(View view) {
getActionBar().setTitle(mTitle);
invalidateOptionsMenu(); // creates call to onPrepareOptionsMenu()
}
public void onDrawerOpened(View drawerView) {
getActionBar().setTitle(mDrawerTitle);
invalidateOptionsMenu(); // creates call to onPrepareOptionsMenu()
}
};
mDrawerLayout.setDrawerListener(mDrawerToggle);
if (savedInstanceState == null) {
selectItem(0);
}
}
#SuppressLint("NewApi")
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.home, menu);
//MenuItem item = menu.findItem(R.id.accounts_spinner);
return super.onCreateOptionsMenu(menu);
}
public boolean onOptionsItemSelected(MenuItem item) {
// Handle presses on the action bar items
if (mDrawerToggle.onOptionsItemSelected(item)) {
return true;
}
switch (item.getItemId()) {
case R.id.action_logout:
logOut();
return true;
case R.id.action_change_pw:
Intent intent = new Intent(this, ChangePw.class);
this.startActivity(intent);
return true;
// case R.id.accounts_spinner:
// Log.i("spinner","spinner click");
// return true;
default:
return super.onOptionsItemSelected(item);
}
}
#SuppressLint("NewApi")
private void logOut() {
// TODO Auto-generated method stub
Log.i("logout","to logout");
//clear data
UserInfo.chosenAccount = null;
//clear client cookies
String cookieString = "";
Log.i("number of cookies",Integer.toString(StartActivity.cookieManager.getCookieStore().getCookies().size()));
if(StartActivity.cookieManager.getCookieStore().getCookies().size() != 0){
//HttpCookie cookie = (HttpCookie) StartActivity.cookieManager.getCookieStore().getCookies().toArray()[0];
//HttpCookie cookie = (HttpCookie) StartActivity.cookieManager.getCookieStore().getCookies().get(0);
int login_cookie_index = 0;
List<HttpCookie> cookieList = (List<HttpCookie>) StartActivity.cookieManager.getCookieStore().getCookies();
//TODO: search for ltsid cookie
for (int cookie_iter = 0; cookie_iter < cookieList.size(); cookie_iter++){
if((cookieList.get(cookie_iter).getName()).equals("ltsid")){
login_cookie_index = cookie_iter;
break;
}
}
HttpCookie cookie = cookieList.get(login_cookie_index);
cookieString = cookie.getValue();
StartActivity.cookieManager.getCookieStore().removeAll();
}
//clear server sessionId
JSONObject data = new JSONObject();
JSONObject name = new JSONObject();
JSONArray arg = new JSONArray();
try{
data.put("requestCommand", "LogOut");
name.put("name","sessionId");
name.put("type", "String");
name.put("value", cookieString);
arg.put(name);
data.put("args", arg);
String finaldata = data.toString();
new AsyncHttpLogout(this).execute(finaldata);
} catch (JSONException e2) {
e2.printStackTrace();
}
this.finish();
}
public boolean onKeyDown(int keyCode, KeyEvent event) {
if(event.getAction() == KeyEvent.ACTION_DOWN){
switch(keyCode)
{
case KeyEvent.KEYCODE_BACK:
finish();
return true;
} //TODO:can go forward
}
return super.onKeyDown(keyCode, event);
}
#SuppressLint("NewApi")
private void fetchUserData() {
int login_cookie_index = 0;
List<HttpCookie> cookieList = (List<HttpCookie>) StartActivity.cookieManager.getCookieStore().getCookies();
//TODO: search for ltsid cookie
for (int cookie_iter = 0; cookie_iter < cookieList.size(); cookie_iter++){
if((cookieList.get(cookie_iter).getName()).equals("ltsid")){
login_cookie_index = cookie_iter;
break;
}
}
HttpCookie cookie = cookieList.get(login_cookie_index);
JSONObject data = new JSONObject();
JSONObject sid = new JSONObject();
JSONArray arg = new JSONArray();
try {
data.put("requestCommand","FetchInfo");
sid.put("name","sessionId");
sid.put("type", "String");
sid.put("value", cookie.getValue());
arg.put(sid);
data.put("args", arg);
} catch (JSONException e2) {
e2.printStackTrace();
}
Log.i("fetch data",data.toString());
String finaldata = data.toString();
//View mySpinnerView = this.findViewById(R.id.accounts_spinner);
new AsyncGetAccountInfo(this,adapter).execute(finaldata);
}
#Override
public boolean onNavigationItemSelected(int position, long itemId) {
Log.i("arg0",Integer.toString(position));
//Log.i("arg1",Long.toString(itemId));
//UserInfo.chosenAccount = UserInfo.accountArray.get(position);
//TODO: fix default account
return false;
}
#Override
public void onSaveInstanceState(Bundle savedInstanceState) {
super.onSaveInstanceState(savedInstanceState);
// Save UI state changes to the savedInstanceState.
// This bundle will be passed to onCreate if the process is
// killed and restarted.
savedInstanceState.putString("currPath", mCurrentPhotoPath);
//savedInstanceState.
// etc.
}
/*
#Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
}
*/
private class DrawerItemClickListener implements ListView.OnItemClickListener {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
selectItem(position);
}
}
private void selectItem(int position) {
// update the main content by replacing fragments
if (position ==0){
Fragment fragment = new OrderForm();
Bundle args = new Bundle();
args.putInt(OrderForm.ARG_LIST_INDEX, position);
fragment.setArguments(args);
FragmentManager fragmentManager = getFragmentManager();
fragmentManager.beginTransaction().replace(R.id.content_frame, fragment).commit();
// update selected item and title, then close the drawer
mDrawerList.setItemChecked(position, true);
setTitle(mDrawerTitles[position]);
mDrawerLayout.closeDrawer(mDrawerList);
}
else if (position ==1){
Fragment fragment = new ServicesGrid();
Bundle args = new Bundle();
args.putInt(ServicesGrid.ARG_LIST_INDEX, position);
fragment.setArguments(args);
FragmentManager fragmentManager = getFragmentManager();
fragmentManager.beginTransaction().replace(R.id.content_frame, fragment).commit();
// update selected item and title, then close the drawer
mDrawerList.setItemChecked(position, true);
setTitle(mDrawerTitles[position]);
mDrawerLayout.closeDrawer(mDrawerList);
}
else if (position ==2){
Fragment fragment = new UserProfile();
Bundle args = new Bundle();
args.putInt(UserProfile.ARG_LIST_INDEX, position);
fragment.setArguments(args);
FragmentManager fragmentManager = getFragmentManager();
fragmentManager.beginTransaction().replace(R.id.content_frame, fragment).commit();
// update selected item and title, then close the drawer
mDrawerList.setItemChecked(position, true);
setTitle(mDrawerTitles[position]);
mDrawerLayout.closeDrawer(mDrawerList);
}
else if (position ==3){
Fragment fragment = new OrderList();
Bundle args = new Bundle();
args.putInt(OrderList.ARG_LIST_INDEX, position);
fragment.setArguments(args);
FragmentManager fragmentManager = getFragmentManager();
fragmentManager.beginTransaction().replace(R.id.content_frame, fragment).commit();
// update selected item and title, then close the drawer
mDrawerList.setItemChecked(position, true);
setTitle(mDrawerTitles[position]);
mDrawerLayout.closeDrawer(mDrawerList);
}
else if (position ==4){
}
else{
Fragment fragment = new PlanetFragment();
Bundle args = new Bundle();
args.putInt(PlanetFragment.ARG_PLANET_NUMBER, position);
fragment.setArguments(args);
FragmentManager fragmentManager = getFragmentManager();
fragmentManager.beginTransaction().replace(R.id.content_frame, fragment).commit();
// update selected item and title, then close the drawer
mDrawerList.setItemChecked(position, true);
setTitle(mDrawerTitles[position]);
mDrawerLayout.closeDrawer(mDrawerList);
}
}
#Override
public void setTitle(CharSequence title) {
mTitle = title;
getActionBar().setTitle(mTitle);
}
/* Called whenever we call invalidateOptionsMenu() */
#Override
public boolean onPrepareOptionsMenu(Menu menu) {
// If the nav drawer is open, hide action items related to the content view
//boolean drawerOpen = mDrawerLayout.isDrawerOpen(mDrawerList);
//menu.findItem(R.id.action_websearch).setVisible(!drawerOpen);
return super.onPrepareOptionsMenu(menu);
}
/**
* When using the ActionBarDrawerToggle, you must call it during
* onPostCreate() and onConfigurationChanged()...
*/
#Override
protected void onPostCreate(Bundle savedInstanceState) {
super.onPostCreate(savedInstanceState);
// Sync the toggle state after onRestoreInstanceState has occurred.
mDrawerToggle.syncState();
}
#Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
// Pass any configuration change to the drawer toggls
mDrawerToggle.onConfigurationChanged(newConfig);
}
public static class PlanetFragment extends Fragment {
public static final String ARG_PLANET_NUMBER = "planet_number";
public PlanetFragment() {
// Empty constructor required for fragment subclasses
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_planet, container, false);
int i = getArguments().getInt(ARG_PLANET_NUMBER);
String planet = getResources().getStringArray(R.array.planets_array)[i];
int imageId = getResources().getIdentifier(planet.toLowerCase(Locale.getDefault()),
"drawable", getActivity().getPackageName());
//((ImageView) rootView.findViewById(R.id.image)).setImageResource(imageId);
getActivity().setTitle(planet);
return rootView;
}
}
}
The problematic fragment is with position =3, the fragment's code:
package com.example.home;
import java.io.File;
import java.io.IOException;
import java.net.HttpCookie;
import java.util.ArrayList;
import java.util.List;
import java.util.Locale;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import com.example.fmapp.R;
import com.example.fmapp.StartActivity;
import android.app.Fragment;
import android.app.ListFragment;
import android.net.Uri;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ListView;
public class OrderList extends ListFragment {
public static final String ARG_LIST_INDEX = "planet_number";
public OrderList(){
}
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_orderlist, container, false);
int i = getArguments().getInt(ARG_LIST_INDEX);
fetchOrderInfo();
String planet = getResources().getStringArray(R.array.planets_array)[i];
int imageId = getResources().getIdentifier(planet.toLowerCase(Locale.getDefault()),
"drawable", getActivity().getPackageName());
//((ImageView) rootView.findViewById(R.id.image)).setImageResource(imageId);
getActivity().setTitle(planet);
return rootView;
}
public void fetchOrderInfo() {
// TODO Auto-generated method stub
int login_cookie_index = 0;
List<HttpCookie> cookieList = (List<HttpCookie>) StartActivity.cookieManager.getCookieStore().getCookies();
//TODO: search for ltsid cookie
for (int cookie_iter = 0; cookie_iter < cookieList.size(); cookie_iter++){
if((cookieList.get(cookie_iter).getName()).equals("ltsid")){
login_cookie_index = cookie_iter;
break;
}
}
HttpCookie cookie = cookieList.get(login_cookie_index);
JSONObject data = new JSONObject();
JSONObject sid = new JSONObject();
JSONArray arg = new JSONArray();
try {
data.put("requestCommand","GetRequestInfo");
sid.put("name","sessionId");
sid.put("type", "String");
sid.put("value", cookie.getValue());
arg.put(sid);
data.put("args", arg);
} catch (JSONException e2) {
e2.printStackTrace();
}
Log.i("fetch data",data.toString());
String finaldata = data.toString();
//View mySpinnerView = this.findViewById(R.id.accounts_spinner);
new AsyncFetchUserOrders(getActivity(),this).execute(finaldata);
return;
}
/*
public void onListItemClick(ListView l, View v, int position, long id) {
Log.i("list click","list item click");
}
*/
public void populateAdapter(ArrayList<OrderObj> arrayOrderObj) {
ArrayAdapter<OrderObj> OrderList = new OrderAdapter(getActivity(), arrayOrderObj);
setListAdapter(OrderList);
}
}
Note that if I comment out asynctask line, the nav drawer works fine.
Now the asynctask code:
package com.example.home;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.ProtocolException;
import java.net.URL;
import java.util.ArrayList;
import com.example.fmapp.GlobalVars;
import com.example.fmapp.JsonUtil;
import android.annotation.SuppressLint;
import android.app.ListFragment;
import android.content.Context;
import android.os.AsyncTask;
import android.util.Log;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.ProgressBar;
import android.widget.Toast;
public class AsyncFetchUserOrders extends AsyncTask<String,Boolean,Integer> {
protected static String USER_SERVER = GlobalVars.USER_SERVER;
private int errorCode = -1;
ProgressBar bar = Home.bar;
private Context mainContext;
private OrderList orderFragment;
//private Arra
private ArrayAdapter<String> adapter;
public ArrayList<OrderObj> arrayOrderObj = new ArrayList<OrderObj>();// TODO: populate this shit
private String toastMsg = null;
public AsyncFetchUserOrders(Context mainContext, OrderList orderFragment) {
this.mainContext = mainContext;
this.orderFragment = orderFragment;
}
protected void onPreExecute(){
bar.setVisibility(View.VISIBLE);
}
#SuppressLint("NewApi")
#Override
protected Integer doInBackground(String... params) {
URL url = null;
Log.i("req data",params[0]);
try {
url = new URL(USER_SERVER);
} catch (MalformedURLException e1) {
e1.printStackTrace();
}
HttpURLConnection urlConnection = null;
try {
urlConnection = (HttpURLConnection) url.openConnection();
} catch (IOException e1) {
e1.printStackTrace();
}
urlConnection.setReadTimeout( 10000 /*milliseconds*/ );
urlConnection.setConnectTimeout( 15000 /* milliseconds */ );
//urlConnection.setRequestProperty("X-Requested-With", "XMLHttpRequest");
urlConnection.setRequestProperty("Connection", "Keep-Alive");
try {
urlConnection.setDoOutput(true);
try {
urlConnection.setRequestMethod("POST");
} catch (ProtocolException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
urlConnection.connect();
OutputStream os = urlConnection.getOutputStream();
BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(os, "UTF-8"));
writer.write(params[0]);
writer.close();
os.close();
} catch (IOException e) {
e.printStackTrace();
}
//response:
try { //parse errorCode
if (urlConnection.getResponseCode() == HttpURLConnection.HTTP_OK) {
String response = urlConnection.getResponseMessage();
/*
InputStream responseStream = new BufferedInputStream(urlConnection.getInputStream());
BufferedReader responseStreamReader = new BufferedReader(new InputStreamReader(responseStream));
String line = "";
StringBuilder stringBuilder = new StringBuilder();
while ((line = responseStreamReader.readLine()) != null) {
stringBuilder.append(line);
Log.i("line",line);
}
responseStreamReader.close();
*/
BufferedReader in = new BufferedReader(new InputStreamReader(urlConnection.getInputStream()));
String inputLine;
StringBuffer stringBuilder = new StringBuffer();
while ((inputLine = in.readLine()) != null) {
stringBuilder.append(inputLine);
}
in.close();
String resp = stringBuilder.toString();
Log.i("resp",resp);
processResp(resp);
}
} catch (IOException e) {
e.printStackTrace();
}
}
finally {
urlConnection.disconnect();
}
return 1;
}
protected void onProgressUpdate(Integer... progress) {
}
protected void onPostExecute(Integer result) {
//Log.i("postexec","in post execute");
bar.setVisibility(View.GONE);
Toast toast = Toast.makeText(mainContext, toastMsg, Toast.LENGTH_SHORT);
toast.show();
if (JsonUtil.authSucess == false){
}
else{
// Imp TODO : get to new Activity
Log.i("ltid","populate spinner");
//IMP TODO :UserInfo.populateSpinner(adapter);
JsonUtil.authSucess = false;
/*
if (arrayOrderObj != null){
ArrayAdapter<OrderObj> OrderList = new OrderAdapter(mainContext, arrayOrderObj);
orderFragment.setListAdapter(OrderList);
}*/
}
//this.cancel(true);
}
/*
public void onStop() {
//super.onStop();
if(this!=null){
this.cancel(true);
}
}
*/
private void processResp(String resp) {
errorCode = JsonUtil.processRespForErrorCode(resp);
if (errorCode == 0){
JsonUtil.authSucess = true;
toastMsg = "Order info received";
//TODO: parse JSON and populate user orderinfo info
Log.i("orders", "to populate Order");
JsonUtil.populateOrderInfo(resp,arrayOrderObj);
//Log.i("fname",UserInfo.chosenAccount.firstName);
/*
ArrayAdapter<OrderObj> OrderList = new OrderAdapter(mainContext, arrayOrderObj);
orderFragment.setListAdapter(OrderList);
*/
//orderFragment.populateAdapter(arrayOrderObj);
}
else{
toastMsg = "Something wrong";
}
}
}
Once again, nothing fancy here. still cant figure out what is making the navigation drawer to just close and not start the fragment, if it is clicked on item to start another fragment.
Thanks.

I guess it will be the Home.bar covers your fragment? Maybe you should use ProgressBar.show() or ProgressBar.dismiss() to control the visibility of the progressbar