Develop Reference

How to identify that I method was called by a fragment?

I have an MainActivity that in turn has several fragments.
In the fragments builder I get an Activity ...
I have a GETJson method that is responsible for all my http requests. This needs to return a JSONObject to the caller.
The method uses AsynkTask, so I created an interface and implement the fragments to get the return from OnPostExecute.
However as all fragments share the same activity (MainActivity) always returns there.
package JSON;
import android.app.Activity;
import android.app.ProgressDialog;
import android.content.Context;
import android.os.AsyncTask;
import android.util.Log;
import android.view.View;
import android.widget.Toast;
import com.example.piadas.MainActivity;
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.URL;
import java.net.URLConnection;
import utils.OnJsonFinished;
public class GetJson extends AsyncTask<String, Void, String> {
public interface OnJsonFinished{
public void onJsonFinishedMethod(Activity act, Context ctx, String response);
}
ProgressDialog dialog;
Context ctx;
Activity act;
String msg;
private utils.OnJsonFinished listener;
public GetJson(Context ctx, Activity act) {
this.ctx = ctx;
this.act = act;
if(act instanceof utils.OnJsonFinished){
this.listener = (utils.OnJsonFinished)act;
}
else{
throw new ClassCastException(act.toString()
+ " must implement OnJsonFinished");
}
}
protected void onPreExecute() {
super.onPreExecute();
dialog = ProgressDialog.show(ctx, "Aguarde", "Consultando...");
}
#Override
protected String doInBackground(String... strings) {
String command = strings[0];
try {
URL url = new URL(command);
URLConnection con = url.openConnection();
con.setRequestProperty("Authorization", "Basic c3VwZXI6MTIzNA==");
con.setConnectTimeout(60000);
//con.setReadTimeout(readTimeout);
InputStream is = con.getInputStream();
/*HttpClient client = new DefaultHttpClient();
HttpGet request = new HttpGet(command);
HttpParams httpParams = new BasicHttpParams();
HttpConnectionParams.setConnectionTimeout(httpParams, 8000);
client = new DefaultHttpClient(httpParams);
request.addHeader("Authorization", "Basic c3VwZXI6MTIzNA==");
HttpResponse response = client.execute(request);
InputStream is = response.getEntity().getContent();*/
BufferedReader reader = new BufferedReader(new InputStreamReader(is, "UTF-8"), 8);
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
msg = "Efetuado com sucesso!";
//PrincipalActivity.PDV.setConectado(true);
return sb.toString();
} catch (Exception ex) {
Log.e("Erro", "Descrição:", ex);
msg = ex.toString();
return "";
}
}
protected void onPostExecute(String json) {
dialog.dismiss();
if (json.equals("")) {
Toast.makeText(ctx, msg, Toast.LENGTH_SHORT).show();
}
else{
listener.onJsonFinishedMethod(act, ctx, json);
}
}
}
package utils;
import android.app.Activity;
import android.content.Context;
public interface OnJsonFinished {
public void onJsonFinishedMethod(Activity act, Context ctx, String response);
}
package com.example.piadas;
import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.RadioGroup;
import android.widget.Toast;
import androidx.annotation.Nullable;
import androidx.fragment.app.Fragment;
import androidx.fragment.app.FragmentManager;
import androidx.fragment.app.FragmentTransaction;
import org.json.JSONArray;
import org.json.JSONObject;
import java.util.ArrayList;
import java.util.List;
import JSON.GetJson;
import JSON.apiPiadas;
import adapter.adapterListPiadas;
import piadas.entidade.Categoria;
import piadas.entidade.FaixaEtaria;
import piadas.entidade.Piada;
import utils.OnJsonFinished;
public class BancoPiadaFragment extends Fragment implements OnJsonFinished {
RadioGroup rgCategoria;
RadioGroup rgFaixa;
private View view;
Button btnBuscar;
EditText editPalavra;
List<Piada> listaPiadas;
ListView lvPiadas;
Context ctx;
Activity act;
adapterListPiadas adapterPiadas;
public BancoPiadaFragment(Activity act, Context ctx) {
this.ctx = ctx;
this.act = act;
}
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
view = inflater.inflate(R.layout.fragment_bancopiada, container, false);
return view;
}
#Override
public void onActivityCreated(#Nullable Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
initView();
init();
}
private void initView(){
btnBuscar = view.findViewById(R.id.btnBuscar);
rgCategoria = view.findViewById(R.id.gpCateg);
rgFaixa = view.findViewById(R.id.gpFaixas);
editPalavra = view.findViewById(R.id.editPalavra);
lvPiadas = view.findViewById(R.id.lvPiadas);
}
private void init(){
btnBusca_click();
//listaPiadas = new ArrayList<>();
lvPiadas.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
FragmentManager fm = getActivity().getSupportFragmentManager();
FragmentTransaction ft = fm.beginTransaction();
ft.replace(R.id.fragment_content, new PiadaFragment(listaPiadas.get(position))).addToBackStack(null);
ft.commit();
}
});
}
private void btnBusca_click(){
btnBuscar.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
listaPiadas = new ArrayList<>();
aplicaFiltroPiadas();
}
});
}
private void aplicaFiltroPiadas(){
//int i = rgCategoria.getCheckedRadioButtonId();
int categoria = -1;
int faixaEtaria = -1;
String palavra = "";
switch (rgCategoria.getCheckedRadioButtonId()) {
case R.id.rbTCategoria:
categoria = -1;
break;
case R.id.rbJoaozinho:
categoria = 2;
break;
case R.id.rbJapones:
categoria = 3;
break;
case R.id.rbLoira:
categoria = 0;
break;
case R.id.rbPortugues:
categoria = 1;
break;
}
switch (rgFaixa.getCheckedRadioButtonId()) {
case R.id.rbTFaixas:
faixaEtaria = -1;
break;
case R.id.rbFLivre:
faixaEtaria = 0;
break;
case R.id.rbF14:
faixaEtaria = 1;
break;
case R.id.rbF18:
faixaEtaria = 2;
break;
}
palavra = editPalavra.getText().toString().trim();
findPiadas(categoria, faixaEtaria, palavra);
//Toast.makeText(this, "Teste:", Toast.LENGTH_SHORT).show();
}
private void findPiadas(int categoria, int faixa, String palavra){
new GetJson(ctx, act).execute(apiPiadas.findPiada(categoria, faixa, palavra));
}
private void preparaTela(Activity act){
adapterPiadas = new adapterListPiadas(listaPiadas, act);
lvPiadas.setAdapter(adapterPiadas);
}
#Override
public void onJsonFinishedMethod(Activity act, Context ctx, String response) {
if (!response.equals("")) {
try{
JSONArray arrayPiadas = new JSONArray(response);
JSONObject objPiada;
for(int i=0; i < arrayPiadas.length(); i++){
objPiada = arrayPiadas.getJSONObject(i);
JSONObject objCategoria = objPiada.getJSONObject("categoria");
JSONObject objFaixaEtaria = objPiada.getJSONObject("faixaEtaria");
Categoria cat = new Categoria(objCategoria.getInt("id"), objCategoria.getString("nome"));
FaixaEtaria faixaEtaria = new FaixaEtaria(objFaixaEtaria.getInt("id"), objFaixaEtaria.getString("descricao"));
listaPiadas.add(new Piada(objPiada.getInt("id"), objPiada.getString("titulo"), cat, faixaEtaria, objPiada.getString("conteudo"), objPiada.getString("imagem")));
}
preparaTela(act);
}catch(Exception ex){
Toast.makeText(ctx, ex.toString(), Toast.LENGTH_SHORT).show();
}
}
}
}
I need to identify which fragment called GETJson and return the String to it.

If you want to each fragment to get their own network callback, you SHOULD pass fragments to GetJson as listener, rather than Activity.
Modify GetJson's constructor:
public GetJson(Activity act, OnJsonFinished listener) {
}
just use act as context, no need to pass both them.
In BancoPiadaFragment:
private void findPiadas(int categoria, int faixa, String palavra){
new GetJson(act, this).execute(apiPiadas.findPiada(categoria, faixa, palavra));
}

Is my Rss Reader app not working because there are too many parsers (Android Studio)?

I'm a high school student working for a magazine in South Korea known as Teen 10 Magazine. As an aspiring computer science major, I decided to make an RSS reader app for my magazine in order to showcase my skills for college applications (and also to create an app, which has always been my interest). Basically, I want to format my app to be similar to your typical news app (ex. CNN, BBC, etc).
Category Screen
In a DrawerLayout (as seen in the Category Screen), I decided to make a tab for each different category (such as News, Features, Entertainment, etc), including the Home category, which is where the categories the articles are under don't matter. When users click on each different tab, it gives them a list of articles that are categorized under that category. In order to get this data, I'm parsing the data to get the title (which is displayed in the list) and the link (which is set to an Intent so that users can access the article in the Web when it is clicked)
However, while some of the categories do work (Home, Lifestyle, Fashion), the rest of the categories are stuck in the loading screen for almost an infinite amount of time.
Example of loading category
I'm pretty sure that the codes of the categories that work and the categories that don't are the same (for reference, I copied and pasted and adjusted each different category accordingly, which could also be an issue but I'm not sure), and are getting their data from the appropriate sites.
Is it perhaps there are too many parsers (RssParser does the actual parsing and seven different "RssService"s use the parser to parse the data from each different category) for my app to work with? My app does seem to crash once in a while though...
I will post my codes below:
MainActivity.java:
package com.hfad.teen10magazine;
import android.app.Activity;
import android.app.Fragment;
import android.app.FragmentManager;
import android.app.FragmentTransaction;
import android.content.Intent;
import android.content.res.Configuration;
import android.os.Bundle;
import android.support.v7.app.ActionBarDrawerToggle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.ShareActionProvider;
import android.support.v4.widget.DrawerLayout;
public class MainActivity extends Activity {
/* adds the fragment to the activity */
private ShareActionProvider shareActionProvider;
private String[] titles;
private ListView drawerList;
private DrawerLayout drawerLayout;
private ActionBarDrawerToggle drawerToggle;
private int currentPosition = 0;
private class DrawerItemClickListener implements ListView.OnItemClickListener {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
//Code to run when an item in the navigation drawer gets clicked
selectItem(position);
}
};
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
titles = getResources().getStringArray(R.array.titles);
drawerList = (ListView)findViewById(R.id.drawer);
drawerLayout = (DrawerLayout)findViewById(R.id.drawer_layout);
//Initialize the ListView
drawerList.setAdapter(new ArrayAdapter<String>(this,
android.R.layout.simple_list_item_activated_1, titles));
drawerList.setOnItemClickListener(new DrawerItemClickListener());
//Display the correct fragment.
if (savedInstanceState != null) {
currentPosition = savedInstanceState.getInt("position");
setActionBarTitle(currentPosition);
} else {
selectItem(0);
}
//Create the ActionBarDrawerToggle
drawerToggle = new ActionBarDrawerToggle(this, drawerLayout,
R.string.open_drawer, R.string.close_drawer) {
//Called when a drawer has settled in a completely closed state
#Override
public void onDrawerClosed(View view) {
super.onDrawerClosed(view);
invalidateOptionsMenu();
}
//Called when a drawer has settled in a completely open state.
#Override
public void onDrawerOpened(View drawerView) {
super.onDrawerOpened(drawerView);
invalidateOptionsMenu();
}
};
drawerLayout.addDrawerListener(drawerToggle);
getActionBar().setDisplayHomeAsUpEnabled(true);
getActionBar().setHomeButtonEnabled(true);
getFragmentManager().addOnBackStackChangedListener(
new FragmentManager.OnBackStackChangedListener() {
public void onBackStackChanged() {
FragmentManager fragMan = getFragmentManager();
Fragment fragment = fragMan.findFragmentByTag("visible_fragment");
if (fragment instanceof TopFragment) {
currentPosition = 0;
}
if (fragment instanceof LifestyleFragment) {
currentPosition = 1;
}
if (fragment instanceof EntFragment) {
currentPosition = 2;
}
if (fragment instanceof NewsFragment) {
currentPosition = 3;
}
if (fragment instanceof FeaturesFragment) {
currentPosition = 4;
}
if (fragment instanceof AcademicsFragment) {
currentPosition = 5;
}
if (fragment instanceof FashionFragment) {
currentPosition = 6;
}
setActionBarTitle(currentPosition);
drawerList.setItemChecked(currentPosition, true);
}
}
);
}
private void selectItem(int position) {
// update the main content by replacing fragments
currentPosition = position;
Fragment fragment;
switch(position) {
case 1:
fragment = new LifestyleFragment();
break;
case 2:
fragment = new EntFragment();
break;
case 3:
fragment = new NewsFragment();
break;
case 4:
fragment = new FeaturesFragment();
break;
case 5:
fragment = new AcademicsFragment();
break;
case 6:
fragment = new FashionFragment();
break;
default:
fragment = new TopFragment();
}
FragmentTransaction ft = getFragmentManager().beginTransaction();
ft.replace(R.id.fragment_container, fragment, "visible_fragment");
ft.addToBackStack(null);
ft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE);
ft.commit();
//Set the action bar title
setActionBarTitle(position);
//Close the drawer
drawerLayout.closeDrawer(drawerList);
}
#Override
public boolean onPrepareOptionsMenu(Menu menu) {
// If the drawer is open, hide action items related to the content view
boolean drawerOpen = drawerLayout.isDrawerOpen(drawerList);
menu.findItem(R.id.action_share).setVisible(!drawerOpen);
return super.onPrepareOptionsMenu(menu);
}
#Override
protected void onPostCreate(Bundle savedInstanceState) {
super.onPostCreate(savedInstanceState);
// Sync the toggle state after onRestoreInstanceState has occurred.
drawerToggle.syncState();
}
#Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
drawerToggle.onConfigurationChanged(newConfig);
}
#Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
outState.putInt("position", currentPosition);
}
private void setActionBarTitle(int position) {
String title="";
titles=getResources().getStringArray(R.array.titles);
if (position == 0){
title = getResources().getString(R.string.app_name);
} else {
title = titles[position];
}
getActionBar().setTitle(title);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
MenuItem menuItem = menu.findItem(R.id.action_share);
shareActionProvider = (ShareActionProvider) menuItem.getActionProvider();
setIntent("This is example text");
return super.onCreateOptionsMenu(menu);
}
private void setIntent(String text) {
Intent intent = new Intent(Intent.ACTION_SEND);
intent.setType("text/plain");
intent.putExtra(Intent.EXTRA_TEXT, text);
shareActionProvider.setShareIntent(intent);
}
}
RssItem.java:
package com.hfad.teen10magazine;
public class RssItem {
private final String title;
private final String link;
private final String pubDate;
public RssItem(String title, String link, String pubDate) {
this.title = title;
this.link = link;
this.pubDate = pubDate;
}
public String getTitle() {
return title;
}
public String getLink() {
return link;
}
public String getDate() {
return pubDate;
}
}
RssParser.java:
package com.hfad.teen10magazine;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;
import android.util.Xml;
public class RssParser {
// We don't use namespaces
private final String ns = null;
public List<RssItem> parse(InputStream inputStream) throws XmlPullParserException, IOException {
try {
XmlPullParser parser = Xml.newPullParser();
parser.setFeature(XmlPullParser.FEATURE_PROCESS_NAMESPACES, false);
parser.setInput(inputStream, null);
parser.nextTag();
return readFeed(parser);
} finally {
inputStream.close();
}
}
private List<RssItem> readFeed(XmlPullParser parser) throws XmlPullParserException, IOException {
parser.require(XmlPullParser.START_TAG, null, "rss");
String title = null;
String link = null;
String pubDate = null;
List<RssItem> items = new ArrayList<RssItem>();
while (parser.next() != XmlPullParser.END_DOCUMENT) {
if (parser.getEventType() != XmlPullParser.START_TAG) {
continue;
}
String name = parser.getName();
if (name.equals("title")) {
title = readTitle(parser);
} else if (name.equals("link")) {
link = readLink(parser);
} else if (name.equals("pubDate")) {
pubDate = readDate(parser);
}
if (title != null && link != null && pubDate != null) {
RssItem item = new RssItem(title, link, pubDate);
items.add(item);
title = null;
link = null;
pubDate = null;
}
}
return items;
}
private String readLink(XmlPullParser parser) throws XmlPullParserException, IOException {
parser.require(XmlPullParser.START_TAG, ns, "link");
String link = readText(parser);
parser.require(XmlPullParser.END_TAG, ns, "link");
return link;
}
private String readTitle(XmlPullParser parser) throws XmlPullParserException, IOException {
parser.require(XmlPullParser.START_TAG, ns, "title");
String title = readText(parser);
parser.require(XmlPullParser.END_TAG, ns, "title");
return title;
}
private String readDate(XmlPullParser parser) throws XmlPullParserException, IOException {
parser.require(XmlPullParser.START_TAG, ns, "pubDate");
String pubDate = readText(parser);
parser.require(XmlPullParser.END_TAG, ns, "pubDate");
return pubDate;
}
// For the tags title and link, extract their text values.
private String readText(XmlPullParser parser) throws IOException, XmlPullParserException {
String result = "";
if (parser.next() == XmlPullParser.TEXT) {
result = parser.getText();
parser.nextTag();
}
return result;
}
}
Constants.java:
package com.hfad.teen10magazine;
public class Constants {
public static final String TAG = "Teen10MagazineApp";
}
RssAdapter.java:
package com.hfad.teen10magazine;
import java.util.List;
import android.content.Context;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.TextView;
public class RssAdapter extends BaseAdapter {
/* puts the RSS items in a list */
private final List<RssItem> items;
private final Context context;
public RssAdapter(Context context, List<RssItem> items) {
this.items = items;
this.context = context;
}
#Override
public int getCount() {
return items.size();
}
#Override
public Object getItem(int position) {
return items.get(position);
}
#Override
public long getItemId(int id) {
return id;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder;
if (convertView == null) {
convertView = View.inflate(context, R.layout.rss_item, null);
holder = new ViewHolder();
holder.itemTitle = (TextView) convertView.findViewById(R.id.itemTitle);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
holder.itemTitle.setText(items.get(position).getTitle());
return convertView;
}
static class ViewHolder {
TextView itemTitle;
}
}
Along with the main codes, for the sake of time, I will post the codes of one category that works (the fragment it is placed in and the RssService used to get it) and the codes of one that doesn't work. If you need more information or codes, please contact me and I will be happy to provide information:
LifeStyleFragment.java (Works):
package com.hfad.teen10magazine;
import android.app.Fragment;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.os.Handler;
import android.os.ResultReceiver;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ListView;
import android.widget.ProgressBar;
import android.widget.Toast;
import java.util.List;
public class LifestyleFragment extends Fragment implements AdapterView.OnItemClickListener {
private ProgressBar progressBar;
private ListView listView;
private View view;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setRetainInstance(true);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
if (view == null) {
view = inflater.inflate(R.layout.fragment_layout, container, false);
progressBar = (ProgressBar) view.findViewById(R.id.progressBar);
listView = (ListView) view.findViewById(R.id.listView);
listView.setOnItemClickListener(this);
startService();
} else {
// If we are returning from a configuration change:
// "view" is still attached to the previous view hierarchy
// so we need to remove it and re-attach it to the current one
ViewGroup parent = (ViewGroup) view.getParent();
parent.removeView(view);
}
return view;
}
private void startService() {
Intent intent = new Intent(getActivity(), RssService_Lifestyle.class);
intent.putExtra(RssService_Lifestyle.RECEIVER, resultReceiver);
getActivity().startService(intent);
}
private final ResultReceiver resultReceiver = new ResultReceiver(new Handler()) {
#SuppressWarnings("unchecked")
#Override
protected void onReceiveResult(int resultCode, Bundle resultData) {
List<RssItem> items = (List<RssItem>) resultData.getSerializable(RssService_Lifestyle.ITEMS);
if (items != null) {
RssAdapter adapter = new RssAdapter(getActivity(), items);
listView.setAdapter(adapter);
} else {
Toast.makeText(getActivity(), "An error occurred while downloading the rss feed.",
Toast.LENGTH_LONG).show();
}
progressBar.setVisibility(View.GONE);
listView.setVisibility(View.VISIBLE);
};
};
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
RssAdapter adapter = (RssAdapter) parent.getAdapter();
RssItem item = (RssItem) adapter.getItem(position);
Uri uri = Uri.parse(item.getLink());
Intent intent = new Intent(Intent.ACTION_VIEW, uri);
startActivity(intent);
}
}
RssService_Lifestyle.java:
package com.hfad.teen10magazine;
import java.io.IOException;
import java.io.InputStream;
import java.io.Serializable;
import java.net.URL;
import java.util.List;
import org.xmlpull.v1.XmlPullParserException;
import android.app.IntentService;
import android.content.Intent;
import android.os.Bundle;
import android.os.ResultReceiver;
import android.util.Log;
public class RssService_Lifestyle extends IntentService {
/* parse the rss feed on lifestyle and send the list of items to LifestyleFragment */
private static final String RSS_LINK = "http://www.teen10mag.com/category/lifestyle/feed/";
public static final String ITEMS = "items";
public static final String RECEIVER = "receiver";
public RssService_Lifestyle() {
super("RssService_Lifestyle");
}
#Override
protected void onHandleIntent(Intent intent) {
Log.d(Constants.TAG, "Service started");
List<RssItem> rssItems = null;
try {
RssParser parser = new RssParser();
rssItems = parser.parse(getInputStream(RSS_LINK));
} catch (XmlPullParserException | IOException e) {
Log.w(e.getMessage(), e);
}
Bundle bundle = new Bundle();
bundle.putSerializable(ITEMS, (Serializable) rssItems);
ResultReceiver receiver = intent.getParcelableExtra(RECEIVER);
receiver.send(0, bundle);
}
public InputStream getInputStream(String link) {
try {
URL url = new URL(link);
return url.openConnection().getInputStream();
} catch (IOException e) {
Log.w(Constants.TAG, "Exception while retrieving the input stream", e);
return null;
}
}
}
AcademicsFragment.java (Doesn't work):
package com.hfad.teen10magazine;
import java.util.List;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.os.Handler;
import android.os.ResultReceiver;
import android.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ListView;
import android.widget.ProgressBar;
import android.widget.Toast;
public class AcademicsFragment extends Fragment implements AdapterView.OnItemClickListener {
private ProgressBar progressBar;
private ListView listView;
private View view;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setRetainInstance(true);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
if (view == null) {
view = inflater.inflate(R.layout.fragment_layout, container, false);
progressBar = (ProgressBar) view.findViewById(R.id.progressBar);
listView = (ListView) view.findViewById(R.id.listView);
listView.setOnItemClickListener(this);
startService();
} else {
// If we are returning from a configuration change:
// "view" is still attached to the previous view hierarchy
// so we need to remove it and re-attach it to the current one
ViewGroup parent = (ViewGroup) view.getParent();
parent.removeView(view);
}
return view;
}
private void startService() {
Intent intent = new Intent(getActivity(), RssService_Academics.class);
intent.putExtra(RssService_Academics.RECEIVER, resultReceiver);
getActivity().startService(intent);
}
private final ResultReceiver resultReceiver = new ResultReceiver(new Handler()) {
#SuppressWarnings("unchecked")
#Override
protected void onReceiveResult(int resultCode, Bundle resultData) {
List<RssItem> items = (List<RssItem>) resultData.getSerializable(RssService_Academics.ITEMS);
if (items != null) {
RssAdapter adapter = new RssAdapter(getActivity(), items);
listView.setAdapter(adapter);
} else {
Toast.makeText(getActivity(), "An error occurred while downloading the rss feed.",
Toast.LENGTH_LONG).show();
}
progressBar.setVisibility(View.GONE);
listView.setVisibility(View.VISIBLE);
}
};
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
RssAdapter adapter = (RssAdapter) parent.getAdapter();
RssItem item = (RssItem) adapter.getItem(position);
Uri uri = Uri.parse(item.getLink());
Intent intent = new Intent(Intent.ACTION_VIEW, uri);
startActivity(intent);
}
}
RssService_Academics.java:
package com.hfad.teen10magazine;
import android.app.IntentService;
import android.content.Intent;
import android.os.Bundle;
import android.os.ResultReceiver;
import android.util.Log;
import org.xmlpull.v1.XmlPullParserException;
import java.io.IOException;
import java.io.InputStream;
import java.io.Serializable;
import java.net.URL;
import java.util.List;
public class RssService_Academics extends IntentService {
/* parse the rss feed on academics and send the list of items to AcademicsFragment */
private static final String RSS_LINK = "http://www.teen10mag.com/category/academics/feed/";
public static final String ITEMS = "items";
public static final String RECEIVER = "receiver";
public RssService_Academics() {
super("RssService_Academics");
}
#Override
protected void onHandleIntent(Intent intent) {
Log.d(Constants.TAG, "Service started");
List<RssItem> rssItems = null;
try {
RssParser parser = new RssParser();
rssItems = parser.parse(getInputStream(RSS_LINK));
} catch (XmlPullParserException | IOException e) {
Log.w(e.getMessage(), e);
}
Bundle bundle = new Bundle();
bundle.putSerializable(ITEMS, (Serializable) rssItems);
ResultReceiver receiver = intent.getParcelableExtra(RECEIVER);
receiver.send(0, bundle);
}
public InputStream getInputStream(String link) {
try {
URL url = new URL(link);
return url.openConnection().getInputStream();
} catch (IOException e) {
Log.w(Constants.TAG, "Exception while retrieving the input stream", e);
return null;
}
}
}
This is my first question, so I tried to be as detailed as possible. If my explanations were unreasonably lengthy, I do apologize. This is also my first time coding something this extensive, so forgive me if I seem to make amateur mistakes...
Thank you in advance for all of your help!!
[EDIT]
When I click on the category that doesn't work, the logcat turns up like this:
09-21 19:29:59.237 1541-1866/system_process W/ActivityManager: Unable to start service Intent { cmp=com.hfad.teen10magazine/.RssService_News (has extras) } U=0: not found
09-21 19:30:13.209 2808-2808/com.hfad.teen10magazine I/Choreographer: Skipped 31 frames! The application may be doing too much work on its main thread.
09-21 19:30:21.122 2808-2814/com.hfad.teen10magazine W/art: Suspending all threads took: 13.025ms`

MainActvity not getting updated when App is first launched

I am developing a MovieApp which loads movie posters in MainActivity Fragment using AsyncTask background thread. I am using gridview and BaseAdapter to display images. Following is the code.
MainActivityFragment.java :
package com.android.example.cinemaapp.app;
import android.app.Fragment;
import android.content.Intent;
import android.content.SharedPreferences;
import android.net.Uri;
import android.os.AsyncTask;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.GridView;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Serializable;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.HashMap;
public class MainActivityFragment extends Fragment{
MoviePosterAdapter moviePosterAdapter;
GridView posterGridView;
public HashMap<String, JSONObject> movieMap;
public MainActivityFragment() {
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setHasOptionsMenu(true);
}
#Override
public void onStart(){
super.onStart();
updateMovies();
}
#Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
inflater.inflate(R.menu.moviefragment, menu);
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
if (id == R.id.action_refresh) {
updateMovies();
}
return super.onOptionsItemSelected(item);
}
public void updateMovies(){
SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(getActivity());
String sortBy = sharedPreferences.getString(getString(R.string.pref_sort_key), getString(R.string.pref_sort_popular));
new FetchMoviePosterTask().execute(sortBy);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_main, container, false);
moviePosterAdapter = new MoviePosterAdapter(getActivity());
posterGridView = (GridView) rootView.findViewById(R.id.gridview_movie);
posterGridView.setAdapter(moviePosterAdapter);
posterGridView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> adapterView, View view, int position, long l) {
// logic to start detail activity
startActivity(intent);
}
});
return rootView;
}
public class FetchMoviePosterTask extends AsyncTask<String, String, Void> implements Serializable {
#Override
protected Void doInBackground(String... params) {
Log.v("FetchMoviePosterTask", "In background method");
HttpURLConnection urlConnection = null;
BufferedReader reader = null;
String movieJsonStr;
try {
//logic to create uri builder
URL url = new URL(builtUri.toString());
urlConnection = (HttpURLConnection) url.openConnection();
urlConnection.setRequestMethod("GET");
urlConnection.connect();
// Read the input stream into a String
InputStream inputStream = urlConnection.getInputStream();
StringBuffer buffer = new StringBuffer();
if (inputStream == null) {
// Nothing to do.
movieJsonStr = null;
}
reader = new BufferedReader(new InputStreamReader(inputStream));
String line;
while ((line = reader.readLine()) != null) {
buffer.append(line + "\n");
}
if (buffer.length() == 0) {
movieJsonStr = null;
}
movieJsonStr = buffer.toString();
// Log.v("MainActivityFragment", "Movie json "+movieJsonStr);
try {
String[] posterPaths = getPosterPaths(movieJsonStr);
for(String path : posterPaths){
publishProgress(path);
}
}catch(JSONException je){
Log.e("MoviePosterPath","Error while parsing JSON");
}
} catch (IOException e) {
Log.e("MoviePosterAdapter", "Error ", e);
movieJsonStr = null;
} finally {
if (urlConnection != null) {
urlConnection.disconnect();
}
if (reader != null) {
try {
reader.close();
} catch (final IOException e) {
Log.e("MoviePosterAdapter", "Error closing stream", e);
}
}
}
return null;
}
public String[] getPosterPaths(String movieJsonStr) throws JSONException{
final String POSTER_PATH = //some value
final String POSTER_SIZE = //some value
JSONObject jsonObject = new JSONObject(movieJsonStr);
JSONArray results = jsonObject.getJSONArray("results");
String[] posterStrs = new String[results.length()];
movieMap = new HashMap<String, JSONObject>();
for(int i =0; i < results.length(); i++){
JSONObject movieObj = (JSONObject) results.get(i);
posterStrs[i] = POSTER_PATH + POSTER_SIZE + movieObj.getString("poster_path");
movieMap.put(posterStrs[i], movieObj);
}
return posterStrs;
}
#Override
protected void onProgressUpdate(String... posterValues){
Log.v("FetchMoviePosterTask", "In onProgress method");
moviePosterAdapter.add(posterValues[0]);
super.onProgressUpdate(posterValues);
}
#Override
protected void onPostExecute(Void result) {
Log.v("FetchMoviePosterTask", "In onPostExecute method");
moviePosterAdapter.notifyDataSetChanged();
super.onPostExecute(result);
}
}
}
MoviePosterAdapter.java :
package com.android.example.cinemaapp.app;
import android.content.Context;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import com.squareup.picasso.Picasso;
import java.util.ArrayList;
public class MoviePosterAdapter extends BaseAdapter {
ArrayList<String> movieArray = new ArrayList<String>();
private Context mContext;
public MoviePosterAdapter(Context c) {
mContext = c;
}
void add(String path){
movieArray.add(path);
}
void clear(){
movieArray.clear();
}
void remove(int index){
movieArray.remove(index);
}
#Override
public int getCount() {
return movieArray.size();
}
#Override
public Object getItem(int position) {
return movieArray.get(position);
}
#Override
public long getItemId(int position) {
return 0;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
ImageView imageView;
if (convertView == null) {
// if it's not recycled, initialize some attributes
imageView = new ImageView(mContext);
imageView.setScaleType(ImageView.ScaleType.FIT_XY);
} else {
imageView = (ImageView) convertView;
}
Picasso.with(mContext).load(movieArray.get(position)).into(imageView);
return imageView;
}
}
Problem : When the application is first launched, UI is not getting populated with imageviews. In Logcat I could see control is flowing through doBackground(), onProgressUpdate() and onPostExecute().
When I click 'Refresh' button or If i navigate to some other activity or app and return to Movie app UI (onResume()) it is working perfectly fine. Images are displayed.
Many thanks in advance!

You should change updateMovies(); from onStart() to onCreateView. As Gabe Sechan said, you're wrong about the lifecycle. Try to do some research on the Fragment lifecycle.

Just you need to call method updateMovies(); from onCreateView() after posterGridView = (GridView) rootView.findViewById(R.id.gridview_movie);
remove call from start();

Loading data from sqlite and displaying on ViewPager

Been trying to load data from sqlite and display it on viewpager without much success.
I have a viewpager with two tabs which should hold data based on the tag_id passed as a parameter of newInstance. There is also an action bar navigation spinner with a list of counties that is used for filter data displayed based on the county_id.
Am able to fetch data from server and save it in the sqlite db but displaying it is the problem. Data is not dispalyed on the first page of the viewpager but it exists in the sqlite. Data for the second is the only one laoded.
Below is my implementation;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.concurrent.TimeUnit;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.os.Parcelable;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.app.FragmentStatePagerAdapter;
import android.support.v4.app.ListFragment;
import android.support.v4.app.LoaderManager.LoaderCallbacks;
import android.support.v4.content.Loader;
import android.support.v4.view.ViewPager;
import android.support.v4.view.ViewPager.OnPageChangeListener;
import android.support.v4.widget.SwipeRefreshLayout;
import android.support.v4.widget.SwipeRefreshLayout.OnRefreshListener;
import android.support.v7.app.ActionBar;
import android.support.v7.app.ActionBar.OnNavigationListener;
import android.support.v7.app.ActionBarActivity;
import android.util.Log;
import android.view.ContextThemeWrapper;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AbsListView;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
import com.android.volley.AuthFailureError;
import com.android.volley.DefaultRetryPolicy;
import com.android.volley.NetworkError;
import com.android.volley.NoConnectionError;
import com.android.volley.ParseError;
import com.android.volley.Response;
import com.android.volley.ServerError;
import com.android.volley.TimeoutError;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.JsonArrayRequest;
import com.app.adapter.CustomCountySpinnerAdapter;
import com.app.adapter.TendersAdapter;
import com.app.database.DBFunctions;
import com.app.externallib.AppController;
import com.app.model.CountyModel;
import com.app.model.PostsModel;
import com.app.utils.AppConstants;
import com.app.utils.PostsListLoader;
import com.nhaarman.listviewanimations.appearance.simple.SwingBottomInAnimationAdapter;
import com.viewpagerindicator.TabPageIndicator;
public class PublicTendersFragment extends Fragment{
private static List<PubliTenders> public_tenders;
public PublicTendersFragment newInstance(String text) {
PublicTendersFragment mFragment = new PublicTendersFragment();
Bundle mBundle = new Bundle();
mBundle.putString(AppConstants.TEXT_FRAGMENT, text);
mFragment.setArguments(mBundle);
return mFragment;
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
public_tenders = new ArrayList<PubliTenders>();
public_tenders.add(new PubliTenders(14, "County"));
public_tenders.add(new PubliTenders(15, "National"));
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
final Context contextThemeWrapper = new ContextThemeWrapper(
getActivity(), R.style.StyledIndicators);
LayoutInflater localInflater = inflater
.cloneInContext(contextThemeWrapper);
View v = localInflater.inflate(R.layout.fragment_tenders, container,
false);
FragmentPagerAdapter adapter = new TendersVPAdapter(
getFragmentManager());
ViewPager pager = (ViewPager) v.findViewById(R.id.pager);
pager.setAdapter(adapter);
TabPageIndicator indicator = (TabPageIndicator) v
.findViewById(R.id.indicator);
indicator.setViewPager(pager);
return v;
}
#Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
setHasOptionsMenu(true);
}
class TendersVPAdapter extends FragmentPagerAdapter{
public TendersVPAdapter(FragmentManager fm) {
super(fm);
}
#Override
public Parcelable saveState() {
return null;
}
#Override
public Fragment getItem(int position) {
switch (position) {
case 0:
return Tenders.newInstance(public_tenders.get(position).tag_id);
case 1:
return Tenders.newInstance(public_tenders.get(position).tag_id);
default:
return null;
}
}
#Override
public CharSequence getPageTitle(int position) {
return public_tenders.get(position).tender_type.toUpperCase(Locale
.getDefault());
}
#Override
public int getCount() {
return public_tenders.size();
}
}
public class PubliTenders {
public int tag_id;
public String tender_type;
public PubliTenders(int tag_id, String tender_type) {
this.tag_id = tag_id;
this.tender_type = tender_type;
}
}
public static class Tenders extends ListFragment implements
OnNavigationListener, LoaderCallbacks<ArrayList<PostsModel>> {
boolean mDualPane;
int mCurCheckPosition = 0;
// private static View rootView;
private SwipeRefreshLayout swipeContainer;
private ListView lv;
private View rootView;
private DBFunctions mapper;
private CustomCountySpinnerAdapter spinadapter;
private TendersAdapter mTendersAdapter;
private static final String ARG_TAG_ID = "tag_id";
private int tag_id;
private int mycounty;
private static final int INITIAL_DELAY_MILLIS = 500;
private static final String DEBUG_TAG = "BlogsFragment";
private final String TAG_REQUEST = "BLOG_TAG";
private JsonArrayRequest jsonArrTendersRequest;
// private OnItemSelectedListener listener;
public static Tenders newInstance(int tag_id) {
Tenders fragment = new Tenders();
Bundle b = new Bundle();
b.putInt(ARG_TAG_ID, tag_id);
fragment.setArguments(b);
return fragment;
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
tag_id = getArguments().getInt(ARG_TAG_ID);
}
#Override
public void onStart() {
super.onStart();
getLoaderManager().initLoader(0, null, this);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
rootView = inflater.inflate(R.layout.fragment_headlines_blog,
container, false);
swipeContainer = (SwipeRefreshLayout) rootView
.findViewById(R.id.swipeProjectsContainer);
lv = (ListView) rootView.findViewById(android.R.id.list);
lv.setOnScrollListener(new AbsListView.OnScrollListener() {
#Override
public void onScrollStateChanged(AbsListView view,
int scrollState) {
}
#Override
public void onScroll(AbsListView view, int firstVisibleItem,
int visibleItemCount, int totalItemCount) {
int topRowVerticalPosition = (lv == null || lv
.getChildCount() == 0) ? 0 : lv.getChildAt(0)
.getTop();
swipeContainer.setEnabled(topRowVerticalPosition >= 0);
}
});
swipeContainer.setOnRefreshListener(new OnRefreshListener() {
#Override
public void onRefresh() {
fetchPublicTenders(mycounty);
}
});
swipeContainer.setColorSchemeResources(R.color.blue_dark,
R.color.irdac_green, R.color.red_light,
R.color.holo_red_light);
return rootView;
}
#Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
setHasOptionsMenu(true);
mapper = new DBFunctions(getActivity());
mapper.open();
// initialize AB Spinner
populateSpinner();
fetchPublicTenders(mycounty);
}
#Override
public void onAttach(Activity activity) {
super.onAttach(activity);
}
#Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
outState.putInt("curChoice", mCurCheckPosition);
}
private void populateSpinner() {
try {
List<CountyModel> counties = new ArrayList<CountyModel>();
counties = mapper.getAllCounties();
ActionBar actBar = ((ActionBarActivity) getActivity())
.getSupportActionBar();
actBar.setDisplayShowTitleEnabled(true);
actBar.setNavigationMode(ActionBar.NAVIGATION_MODE_LIST);
spinadapter = new CustomCountySpinnerAdapter(getActivity(),
android.R.layout.simple_spinner_dropdown_item, counties);
actBar.setListNavigationCallbacks(spinadapter, this);
} catch (NullPointerException exp) {
}
}
#Override
public Loader<ArrayList<PostsModel>> onCreateLoader(int arg0,
Bundle arg1) {
Log.v(DEBUG_TAG, "On Create Loader");
return new PostsListLoader(getActivity(), mycounty, tag_id);
}
#Override
public void onLoadFinished(Loader<ArrayList<PostsModel>> arg0,
ArrayList<PostsModel> data) {
// System.out.println("results " + data.size());
addToAdapter(data);
}
#Override
public void onLoaderReset(Loader<ArrayList<PostsModel>> arg0) {
lv.setAdapter(null);
}
#Override
public boolean onNavigationItemSelected(int pos, long arg1) {
CountyModel mo = spinadapter.getItem(pos);
this.mycounty = mo.getId();
refresh(mo.getId());
return false;
}
#Override
public void onListItemClick(ListView l, View v, int position, long id) {
TextView txtTitle = (TextView) v.findViewById(R.id.tender_title);
TextView txtRefNo = (TextView) v.findViewById(R.id.ref_no);
TextView txtExpiryDate = (TextView) v
.findViewById(R.id.expiry_date);
TextView txtOrg = (TextView) v.findViewById(R.id.dept_or_org);
Intent intTenderFullDetails = new Intent(getActivity(),
TenderDetailsActivity.class);
intTenderFullDetails.putExtra(TenderDetailsActivity.TENDER_TITLE,
txtTitle.getText().toString().trim());
intTenderFullDetails.putExtra(TenderDetailsActivity.TENDER_REF_NO,
txtRefNo.getText().toString().trim());
intTenderFullDetails.putExtra(
TenderDetailsActivity.TENDER_EXPIRY_DATE, txtExpiryDate
.getText().toString().trim());
intTenderFullDetails.putExtra(TenderDetailsActivity.TENDER_ORG,
txtOrg.getText().toString().trim());
// intTenderFullDetails.putExtra(TenderDetailsActivity.TENDER_DESC,
// Lorem);
startActivity(intTenderFullDetails);
}
private void fetchPublicTenders(final int county_id) {
swipeContainer.setRefreshing(true);
Uri.Builder builder = Uri.parse(AppConstants.postsUrl).buildUpon();
builder.appendQueryParameter("tag_id", Integer.toString(tag_id));
System.out.println("fetchPublicTenders with tag_id " + tag_id
+ " and county_id " + county_id);
jsonArrTendersRequest = new JsonArrayRequest(builder.toString(),
new Response.Listener<JSONArray>() {
#Override
public void onResponse(JSONArray response) {
if (response.length() > 0) {
for (int i = 0; i < response.length(); i++) {
try {
JSONObject tender_item = response
.getJSONObject(i);
mapper.createPost(
tender_item.getInt("id"),
tender_item.getInt("tag_id"),
tender_item.getInt("county_id"),
tender_item.getInt("sector_id"),
tender_item.getString("title"),
tender_item.getString("slug"),
tender_item.getString("content"),
tender_item
.getString("reference_no"),
tender_item
.getString("expiry_date"),
tender_item
.getString("organization"),
tender_item
.getString("image_url"),
tender_item
.getString("created_at"));
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
swipeContainer.setRefreshing(false);
refresh(county_id);
}
} else {
if (swipeContainer.isShown()) {
swipeContainer.setRefreshing(false);
}
try {
Toast.makeText(getActivity(),
"Sorry! No results found",
Toast.LENGTH_LONG).show();
} catch (NullPointerException npe) {
System.out.println(npe);
}
}
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
if (error instanceof NetworkError) {
try {
Toast.makeText(
getActivity(),
"Network Error. Cannot refresh list",
Toast.LENGTH_SHORT).show();
} catch (NullPointerException npe) {
System.err.println(npe);
}
if (swipeContainer.isShown()) {
swipeContainer.setRefreshing(false);
}
refresh(county_id);
} else if (error instanceof ServerError) {
try {
Toast.makeText(
getActivity(),
"Problem Connecting to Server. Try Again Later",
Toast.LENGTH_SHORT).show();
} catch (NullPointerException npe) {
System.err.println(npe);
}
if (swipeContainer.isShown()) {
swipeContainer.setRefreshing(false);
}
} else if (error instanceof AuthFailureError) {
} else if (error instanceof ParseError) {
} else if (error instanceof NoConnectionError) {
try {
Toast.makeText(getActivity(),
"No Connection", Toast.LENGTH_SHORT)
.show();
} catch (NullPointerException npe) {
System.err.println(npe);
}
} else if (error instanceof TimeoutError) {
try {
Toast.makeText(
getActivity()
.getApplicationContext(),
"Timeout Error. Try Again Later",
Toast.LENGTH_SHORT).show();
} catch (NullPointerException npe) {
System.err.println(npe);
}
}
if (swipeContainer.isShown()) {
swipeContainer.setRefreshing(false);
}
}
}) {
#Override
public Map<String, String> getHeaders() throws AuthFailureError {
HashMap<String, String> headers = new HashMap<String, String>();
headers.put("Accept", "application/json");
return headers;
}
};
// Set a retry policy in case of SocketTimeout & ConnectionTimeout
// Exceptions. Volley does retry for you if you have specified the
// policy.
jsonArrTendersRequest.setRetryPolicy(new DefaultRetryPolicy(
(int) TimeUnit.SECONDS.toMillis(20),
DefaultRetryPolicy.DEFAULT_MAX_RETRIES,
DefaultRetryPolicy.DEFAULT_BACKOFF_MULT));
jsonArrTendersRequest.setTag(TAG_REQUEST);
AppController.getInstance().addToRequestQueue(jsonArrTendersRequest);
}
public void refresh(int county_id) {
Bundle b = new Bundle();
b.putInt("myconty", county_id);
if (isAdded()) {
getLoaderManager().restartLoader(0, b, this);
}
}
private void addToAdapter(ArrayList<PostsModel> plist) {
mTendersAdapter = new TendersAdapter(rootView.getContext(), plist);
SwingBottomInAnimationAdapter swingBottomInAnimationAdapter = new SwingBottomInAnimationAdapter(
mTendersAdapter);
swingBottomInAnimationAdapter.setAbsListView(lv);
assert swingBottomInAnimationAdapter.getViewAnimator() != null;
swingBottomInAnimationAdapter.getViewAnimator()
.setInitialDelayMillis(INITIAL_DELAY_MILLIS);
setListAdapter(swingBottomInAnimationAdapter);
mTendersAdapter.notifyDataSetChanged();
}
}
}
And this is the PostsListLoader class
import java.util.ArrayList;
import java.util.List;
import android.content.Context;
import android.support.v4.content.AsyncTaskLoader;
import com.app.database.DBFunctions;
import com.app.model.PostsModel;
public class PostsListLoader extends AsyncTaskLoader<ArrayList<PostsModel>> {
private DBFunctions mapper;
private ArrayList<PostsModel> myPostsModel;
private int county_id;
private int tag_id;
public PostsListLoader(Context context, int county_id, int tag_id) {
super(context);
mapper = new DBFunctions(getContext());
mapper.open();
this.county_id = county_id;
this.tag_id = tag_id;
}
#Override
public ArrayList<PostsModel> loadInBackground() {
String query_string = AppConstants.KEY_COUNTY_ID + " = " + county_id
+ " AND " + AppConstants.KEY_TAG_ID + " = " + tag_id;
myPostsModel = mapper.getPosts(query_string);
return myPostsModel;
}
#Override
public void deliverResult(ArrayList<PostsModel> data) {
if (isReset()) {
// An async query came in while the loader is stopped. We
// don't need the result.
if (data != null) {
onReleaseResources(data);
}
}
List<PostsModel> oldNews = data;
myPostsModel = data;
if (isStarted()) {
// If the Loader is currently started, we can immediately
// deliver its results.
super.deliverResult(data);
}
// At this point we can release the resources associated with
// 'oldNews' if needed; now that the new result is delivered we
// know that it is no longer in use.
if (oldNews != null) {
onReleaseResources(oldNews);
}
}
/**
* Handles a request to start the Loader.
*/
#Override
protected void onStartLoading() {
if (myPostsModel != null) {
// If we currently have a result available, deliver it
// immediately.
deliverResult(myPostsModel);
}
if (takeContentChanged() || myPostsModel == null) {
// If the data has changed since the last time it was loaded
// or is not currently available, start a load.
forceLoad();
}
}
/**
* Handles a request to stop the Loader.
*/
#Override
protected void onStopLoading() {
// Attempt to cancel the current load task if possible.
cancelLoad();
}
/**
* Handles a request to cancel a load.
*/
#Override
public void onCanceled(ArrayList<PostsModel> news) {
super.onCanceled(news);
// At this point we can release the resources associated with 'news'
// if needed.
onReleaseResources(news);
}
/**
* Handles a request to completely reset the Loader.
*/
#Override
protected void onReset() {
super.onReset();
// Ensure the loader is stopped
onStopLoading();
// At this point we can release the resources associated with 'apps'
// if needed.
if (myPostsModel != null) {
onReleaseResources(myPostsModel);
myPostsModel = null;
}
}
/**
* Helper function to take care of releasing resources associated with an
* actively loaded data set.
*/
protected void onReleaseResources(List<PostsModel> news) {
}
}
What could I be doing wrong?
Any help will be appreciated.
Thanks

Grid-view is not formed in horizontal-scrolling-pages like home screen when app is in Background or Process is died

I am developing Horizontal Scrolling pages and tabs
MY app is working well in all devices in foreground, but when it goes to background, after one hour, the logs saying that Process com.example.myapp has died. When i reopen the app , the gridview data is not appearing but when scrolling horizontally , getView() method displaying all data like images and text.
that means app has data but view is not formed when process has died. And if i press back button and re-open the app, It is working good
My MainActivity.java is here
package com.bbgusa.bbgdemo.ui.phone;
import java.util.List;
import java.util.Vector;
import org.json.JSONObject;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.support.v4.view.ViewPager;
import android.view.View;
import android.widget.TabHost;
import com.bbgusa.bbgdemo.R;
import com.bbgusa.bbgdemo.listener.phone.CustomViewPager;
import com.bbgusa.bbgdemo.ui.chat.phone.ChatFragmentTab;
import com.bbgusa.bbgdemo.ui.dialpad.phone.DialerFragment;
import com.bbgusa.bbgdemo.ui.home.phone.AlarmFragmentPhone;
import com.bbgusa.bbgdemo.ui.home.phone.HomeFragment;
import com.bbgusa.bbgdemo.ui.home.phone.HomeFragmentTab;
import com.bbgusa.bbgdemo.ui.home.phone.InfoFragPhone;
import com.bbgusa.bbgdemo.ui.home.phone.MapPhone;
import com.bbgusa.bbgdemo.ui.home.phone.WeatherFragmentPhone;
import com.bbgusa.bbgdemo.ui.messages.phone.MessagesFragment;
import com.bbgusa.bbgdemo.ui.settings.phone.AboutFragment;
import com.bbgusa.bbgdemo.ui.tablet.ConstantsManager;
import com.bbgusa.bbgdemo.ui.tablet.OnFragmentChangedListenerPhone;
import com.bbgusa.bbgdemo.utils.common.UConnectUtils;
public class MainActivity extends FragmentActivity implements TabHost.OnTabChangeListener, ViewPager.OnPageChangeListener, OnFragmentChangedListenerPhone {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main_phone);
this.initialiseTabHost(savedInstanceState);
initialiseViewPager();
}
/**
* Initialise ViewPager
*/
private void initialiseViewPager() {
List<Fragment> fragments = new Vector<Fragment>();
fragments.add(Fragment.instantiate(this,HomeFragmentTab.class.getName()));
fragments.add(Fragment.instantiate(this, DialerFragment.class.getName()));
fragments.add(Fragment.instantiate(this,MessagesFragment.class.getName()));
fragments.add(Fragment.instantiate(this,ChatFragmentTab.class.getName()));
fragments.add(Fragment.instantiate(this, AboutFragment.class.getName()));
this.mPagerAdapter = new PagerAdapter(super.getSupportFragmentManager(), fragments);
this.mViewPager = (CustomViewPager) findViewById(R.id.tabviewpager);
this.mViewPager.setAdapter(this.mPagerAdapter);
this.mViewPager.setOnPageChangeListener(this);
this.mViewPager.setOffscreenPageLimit(5);
this.mViewPager.setCurrentItem(0);
}
#Override
public void onFragmentChangePhone(JSONObject response, String whichView, String title, String mPhoneNo) {
Bundle b = new Bundle();
if(response != null)
b.putString("JSONObject", response.toString());
if(title != null)
b.putString("Title", title);
String propertyId = UConnectUtils.getPropertyId(mPref, getString(R.string.property_id));
b.putString(UConnectUtils.PROPERTY_ID_KEY, propertyId);
FragmentManager fragmentManager = getSupportFragmentManager();
FragmentTransaction ft = fragmentManager.beginTransaction();
Fragment fragment = null;
if (whichView.equals(ConstantsManager.GRIDVIEWPAGER)) {
// getSupportFragmentManager().popBackStack();
fragment = new HomeFragment();
} else if (whichView.equals(ConstantsManager.WEATHER)) {
fragment = new WeatherFragmentPhone();
}else if (whichView.equals(ConstantsManager.ALARM)) {
fragment = new AlarmFragmentPhone();
}else if (whichView.equals(ConstantsManager.MAPS)) {
fragment = new MapPhone();
}else if (whichView.equals(ConstantsManager.HELP)) {
fragment = new InfoFragPhone();
}
if (whichView.equals(ConstantsManager.MAPS)) { // to show plus-icon on map top right corner
HomeFragment.getInstance().onGridViewVisibilityChanged(true);
HomeFragmentTab.getInstance().onFragmentTabChange(View.VISIBLE , title, "", View.VISIBLE);
} else if (!whichView.equals(ConstantsManager.GRIDVIEWPAGER)) {
HomeFragment.getInstance().onGridViewVisibilityChanged(true);
HomeFragmentTab.getInstance().onFragmentTabChange(View.VISIBLE , title, mPhoneNo, View.GONE);
}
fragment.setArguments(b);
ft.add(R.id.main_home_frag, fragment);
if (whichView.equals(ConstantsManager.GRIDVIEWPAGER)) {
fragmentManager.popBackStack();
} else {
ft.addToBackStack(fragment.toString());
}
ft.commit();
}
#Override
public void onPageScrollStateChanged(int arg0) {
// TODO Auto-generated method stub
}
#Override
public void onPageScrolled(int arg0, float arg1, int arg2) {
// TODO Auto-generated method stub
}
#Override
public void onPageSelected(int arg0) {
// TODO Auto-generated method stub
}
#Override
public void onTabChanged(String tabId) {
// TODO Auto-generated method stub
}
}
and my HomeFragmentTab.java is
package com.bbgusa.bbgdemo.ui.home.phone;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import com.bbgusa.bbgdemo.R;
import com.bbgusa.bbgdemo.ui.phone.MainActivity;
import com.bbgusa.bbgdemo.ui.tablet.ConstantsManager;
import com.bbgusa.bbgdemo.ui.tablet.OnFragmentTabChangedListener;
#SuppressLint("NewApi")
public class HomeFragmentTab extends Fragment implements OnFragmentTabChangedListener{
private static final String TAG = HomeFragmentTab.class.getSimpleName();
private static HomeFragmentTab tab;
private MainActivity activityPhone;
public static HomeFragmentTab getInstance() {
return tab;
}
#Override
public void onAttach(Activity activity) {
super.onAttach(activity);
activityPhone = (MainActivity) activity;
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View v;
if (container == null) {
return null;
}
Log.i(TAG, "onCreateView");
v = inflater.inflate(R.layout.hometab_phone, container, false);
tab = this;
activityPhone.onFragmentChangePhone(null, ConstantsManager.GRIDVIEWPAGER, getResources().getString(R.string.app_name), "");
return v;
}
#Override
public void onFragmentTabChange(int i, String title, String mPhoneNo, int mapV) {
}
}
and HomeFragment.java is
package com.bbgusa.bbgdemo.ui.home.phone;
import java.util.Locale;
import org.json.JSONArray;
import org.json.JSONObject;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.content.SharedPreferences;
import android.content.res.Resources;
import android.graphics.drawable.ColorDrawable;
import android.os.AsyncTask;
import android.os.Build;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentStatePagerAdapter;
import android.support.v4.view.ViewPager;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewTreeObserver;
import android.view.ViewTreeObserver.OnGlobalLayoutListener;
import android.view.Window;
import android.view.WindowManager;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.widget.ImageView;
import android.widget.LinearLayout;
import com.android.volley.Request;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.JsonObjectRequest;
import com.bbgusa.bbgdemo.R;
import com.bbgusa.bbgdemo.ui.ImageCacheManager;
import com.bbgusa.bbgdemo.ui.cms.tablet.TestTopics;
import com.bbgusa.bbgdemo.ui.cms.tablet.TopicList;
import com.bbgusa.bbgdemo.ui.phone.MainActivity;
import com.bbgusa.bbgdemo.ui.tablet.onGridViewVisibilityChangedListener;
import com.bbgusa.bbgdemo.utils.common.UCConstants;
import com.bbgusa.bbgdemo.utils.common.UConnectUtils;
import com.viewpagerindicator.IconPageIndicator;
import com.viewpagerindicator.IconPagerAdapter;
import com.viewpagerindicator.PageIndicator;
public class HomeFragment extends Fragment implements onGridViewVisibilityChangedListener{
private static final String TAG = HomeFragment.class.getSimpleName();
private ViewPager mViewPager;
private MainActivity activity;
private PageIndicator mIndicator;
private Animation mRotateAnim;
private Dialog indiacatorDialog;
private LinearLayout homeFragmentLL;
private static HomeFragment homeFragment;
public static final HomeFragment getInstance() {
return homeFragment;
}
#Override
public void onAttach(Activity activity) {
super.onAttach(activity);
this.activity = (MainActivity) activity;
}
#Override
public void onCreate(Bundle savedInstanceState) {
Log.i(TAG, "onCreate");
super.onCreate(savedInstanceState);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
if (container == null) {
return null;
}
View v = inflater.inflate(R.layout.home_phone, container, false);
homeFragment = this;
UConnectUtils.setLauncher(true);
mViewPager = (ViewPager) v.findViewById(R.id.viewpager);
mIndicator = (IconPageIndicator) v.findViewById(R.id.indicator);
homeFragmentLL = (LinearLayout) v.findViewById(R.id.homeFragment);
indiacatorDialog = new Dialog(getActivity());
indiacatorDialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
indiacatorDialog.getWindow().clearFlags(WindowManager.LayoutParams.FLAG_DIM_BEHIND);
indiacatorDialog.setContentView(R.layout.indicator_dialog);
indiacatorDialog.setCanceledOnTouchOutside(false);
Window window = indiacatorDialog.getWindow();
window.setBackgroundDrawable(new ColorDrawable(android.graphics.Color.TRANSPARENT));
mRotateAnim = AnimationUtils.loadAnimation(getActivity(), R.anim.rotate_and_scale);
UConnectUtils.addAnimationFrameCount(mRotateAnim);
indicatorAnim();
// for property id
// if (activity.isInterNetAvailable()) {
Log.i(TAG, "onCreateView========== isInterNetAvailable");
new CmsPropertyAsync(activity).execute(UCConstants.CMS_CONFIG_URL, UCConstants.CMS_CONFIG_KEY);
// }
return v;
}
protected void parseJson(JSONObject rootResponce) {
TestTopics.imageUrls.clear();
TestTopics.titles.clear();
TestTopics.mMainMenuID.clear();
TestTopics.mViewType.clear();
TestTopics.mPhoneNo.clear();
try {
//get the Version
String version = rootResponce.optString("VERSION");
SharedPreferences mPref;
SharedPreferences.Editor edit;
mPref = PreferenceManager.getDefaultSharedPreferences(getActivity().getApplicationContext());
edit = mPref.edit();
edit.putString(getResources().getString(R.string.pref_cms_version_key), version).commit();
JSONArray jsonArray = rootResponce.getJSONArray("MAINMENU");
for (int i = 0; i < jsonArray.length(); i++) {
JSONObject childMenuObject = jsonArray.getJSONObject(i);
int mainMenuID = childMenuObject.optInt("mainMenuId");
String title = childMenuObject.optString("title");
String viewType = childMenuObject.optString("viewType");
String imageUrl = childMenuObject.optString("imageUrl");
String phoneNo = childMenuObject.optString("phoneNo");
TestTopics.mMainMenuID.add(mainMenuID);
TestTopics.imageUrls.add(imageUrl);
TestTopics.titles.add(title);
TestTopics.mViewType.add(viewType);
TestTopics.mPhoneNo.add(phoneNo);
}
// Create a TopicList for this demo. Save it as the shared instance
// in
// TopicList
String sampleText = getResources().getString(R.string.sample_topic_text);
TopicList tlist = new TopicList(sampleText);
TopicList.setInstance(tlist);
// Create an adapter object that creates the fragments that we need
// to display the images and titles of all the topics.
MyAdapter mAdapter = new MyAdapter(getActivity().getSupportFragmentManager(), tlist, getResources());
// mViewPager.removeAllViews();
mViewPager.setAdapter(mAdapter);
// mViewPager.setPageTransformer(true, new DepthPageTransformer());
mIndicator.setViewPager(mViewPager);
mIndicator.setCurrentItem(0);
mIndicator.notifyDataSetChanged();
ViewTreeObserver observer = mViewPager.getViewTreeObserver();
observer.addOnGlobalLayoutListener(new OnGlobalLayoutListener() {
#SuppressLint("NewApi")
#SuppressWarnings("deprecation")
#Override
public void onGlobalLayout() {
mViewPager.bringChildToFront(mViewPager.getChildAt(0));
if(Build.VERSION.SDK_INT >= UCConstants.ICE_CREAM_SANDWICH_MR1){
mViewPager.getViewTreeObserver().removeOnGlobalLayoutListener(this);
}else{
mViewPager.getViewTreeObserver().removeGlobalOnLayoutListener(this);
}
}
});
/*Fragment f = new GridViewFragment();
FragmentTransaction t = getFragmentManager().beginTransaction();
t.replace(R.id.main_home_frag, f);
t.commit();*/
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* Adapter class
*
* This adapter class sets up GridFragment objects to be displayed by a
* ViewPager.
*/
public static class MyAdapter extends FragmentStatePagerAdapter implements IconPagerAdapter {
private TopicList mTopicList;
private int mNumItems = 0;
private int mNumFragments = 0;
/**
* Return a new adapter.
*/
public MyAdapter(FragmentManager fm, TopicList db, Resources res) {
super(fm);
setup(db, res);
}
/**
* Get the number of fragments to be displayed in the ViewPager.
*/
#Override
public int getCount() {
Log.i(TAG, "getCount : mNumFragments = "+mNumFragments);
return mNumFragments;
}
/**
* Return a new GridFragment that is used to display n items at the
* position given.
*
* #param position
* int - the position of the fragement; 0..numFragments-1
*/
#Override
public Fragment getItem(int position) {
// Create a new Fragment and supply the fragment number, image
// position, and image count as arguments.
// (This was how arguments were handled in the original pager
// example.)
Bundle args = new Bundle();
args.putInt("num", position + 1);
args.putInt("firstImage", position * mNumItems);
// The last page might not have the full number of items.
int imageCount = mNumItems;
if (position == (mNumFragments - 1)) {
int numTopics = mTopicList.getNumTopics();
int rem = numTopics % mNumItems;
if (rem > 0)
imageCount = rem;
}
args.putInt("imageCount", imageCount);
args.putSerializable("topicList", TopicList.getInstance());
// Return a new GridFragment object.
Log.i(TAG, "created fragmenat number:==== "+position+" "+1);
GridViewFragmentPhone f = new GridViewFragmentPhone();
f.setArguments(args);
Log.i(TAG, "getItem : imageCount = "+imageCount);
return f;
}
/**
* Set up the adapter using information from a TopicList and resources
* object. When this method completes, all the instance variables of the
* adapter are valid;
*
* #param tlist
* TopicList
* #param res
* Resources
* #return void
*/
void setup(TopicList tlist, Resources res) {
mTopicList = tlist;
if ((tlist == null) || (res == null)) {
mNumItems = 2;//DEFAULT_NUM_ITEMS;
mNumFragments = 2;//DEFAULT_NUM_FRAGMENTS;
} else {
int numTopics = tlist.getNumTopics();
int numRowsGV = res.getInteger(R.integer.num_of_rows_gridview);
int numColsGV = res.getInteger(R.integer.num_of_cols_gridview);
int numTopicsPerPage = numRowsGV * numColsGV;
int numFragments = numTopics / numTopicsPerPage;
if (numTopics % numTopicsPerPage != 0)
numFragments++; // Add one if there is a partial page
mNumFragments = numFragments;
mNumItems = numTopicsPerPage;
}
} // end setup
#Override
public int getIconResId(int index) {
int[] ICON = new int[mNumFragments];
for (int i = 0; i < mNumFragments; i++) {
ICON[i] = R.drawable.slidericon;
}
return ICON[index % ICON.length];
}
} // end class MyAdapter
#Override
public void onGridViewVisibilityChanged(boolean hide) {
if(hide){
homeFragmentLL.setVisibility(View.GONE);
}else {
homeFragmentLL.setVisibility(View.VISIBLE);
}
}
#Override
public void onDetach() {
super.onDetach();
activity = null;
}
#Override
public void onDestroy() {
super.onDestroy();
}
private class CmsPropertyAsync extends AsyncTask<String, Void, String> {
MainActivity context;
CmsPropertyAsync(MainActivity activityTab) {
context = activityTab;
}
#Override
protected String doInBackground(String... params) {
String propertyId = UConnectUtils.getPropertyId(PreferenceManager.getDefaultSharedPreferences(context),getResources().getString(R.string.property_id));
if(propertyId != null && propertyId.length() > 0){
return propertyId;
}
return UConnectUtils.requestPropertyId(params[0], params[1]);
}
#Override
protected void onPostExecute(String propertyId) {
if(propertyId == null){
indiacatorDialog.dismiss();
showPropertyIdTimeoutAlert(getActivity());
return;
}
SharedPreferences.Editor editor = PreferenceManager.getDefaultSharedPreferences(context).edit();
editor.putString(getString(R.string.property_id),propertyId).commit();
String url = null;
String locale = Locale.getDefault().getLanguage();
url = UCConstants.CMS_BASE_URL+"mainMenu?propertyId="+propertyId+"&lang="+locale;
JsonObjectRequest jsObjRequest = new JsonObjectRequest(
Request.Method.GET, url, null, new Response.Listener<JSONObject>() {
#Override
public void onResponse(JSONObject response) {
parseJson(response);
indiacatorDialog.dismiss();
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
if (activity != null) {
// activity.getConnection(error);
}
indiacatorDialog.dismiss();
}
});
ImageCacheManager.getInstance().getQueueForMainmenu().add(jsObjRequest);
}
}
private void indicatorAnim() {
if (indiacatorDialog != null) {
ImageView alertIndicator = (ImageView) indiacatorDialog.findViewById(R.id.alert_indicator);
alertIndicator.startAnimation(mRotateAnim);
if (!getActivity().isFinishing()) {
indiacatorDialog.show();
}
}
}
// Show alert for Time out
private void showPropertyIdTimeoutAlert(final Activity context) {
AlertDialog.Builder alertDialog = new AlertDialog.Builder(context);
alertDialog.setIcon(R.drawable.alert_dialog_icon);
alertDialog.setTitle(context.getString(R.string.timeout_msg));
alertDialog.setMessage(context.getString(R.string.timeout_msg2));
alertDialog.setPositiveButton("OK",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
indicatorAnim();
// for property id
new CmsPropertyAsync(activity).execute(UCConstants.CMS_CONFIG_URL, UCConstants.CMS_CONFIG_KEY);
}
});
alertDialog.setNegativeButton("Cancel", new OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
getActivity().finish();
}
});
AlertDialog alert = alertDialog.create();
alert.setCancelable(false);
alert.setCanceledOnTouchOutside(false);
if (context != null && !context.isFinishing()) {
alert.show();
}
}
}

Actually, some data is being saved with onSavedInstaceState(). The data is not being deleted when process has been killed on LowMemory.
I fixed this with
#Override
protected void onSaveInstanceState(Bundle outState) {
//super.onSaveInstanceState(outState);
}
Just do not call super class. Just comment like above