Develop Reference

RecyclerView Returning 'true' instead of JSON

My RecyclerView is returning the Boolean value 'true' for some odd reason.
I can't seem to fix the issue
This is the output I am getting
It should display text from the JSON
JSON LINK - https://newsapi.org/v2/top-headlines?sources=cnn&apiKey=c80ddd850a524fe5975cad881d6f4aba
I am accessing the 'articles' JSON array and I want to display the title
MainActivity code:
public class MainActivity extends AppCompatActivity {
RecyclerView mRecyclerView;
private RecyclerView.LayoutManager mLayoutManager;
MyAdapter mViewAdapter;
List<News> news_list = new ArrayList<>();
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
new ParseNewsJSON().execute();
mRecyclerView = (RecyclerView) findViewById(R.id.recyclerView);
mRecyclerView.setHasFixedSize(true);
//mRecyclerView.setItemAnimator(new DefaultItemAnimator());
mRecyclerView.setLayoutManager(new LinearLayoutManager(getApplicationContext()));
mViewAdapter = new MyAdapter(new ArrayList<News>());
mRecyclerView.setAdapter(mViewAdapter);
}
public class ParseNewsJSON extends AsyncTask<String, Void, String> {
private final String JSON_URL = "https://newsapi.org/v2/top-headlines?sources=cnn&apiKey=c80ddd850a524fe5975cad881d6f4aba";
String result = "";
ArrayList<String> article_heading = new ArrayList<>();
#Override
protected String doInBackground(String... strings) {
try {
URL url = new URL(JSON_URL);
HttpURLConnection httpURLConnection = (HttpURLConnection) url.openConnection();
InputStream inputStream = httpURLConnection.getInputStream();
InputStreamReader reader = new InputStreamReader(inputStream);
int data = reader.read();
while (data != -1) {
char current = (char) data;
result += current;
data = reader.read();
}
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return result;
}
protected void onPostExecute(String s) {
try {
JSONObject jsonObject = new JSONObject(result);
JSONArray jsonArray = jsonObject.getJSONArray("articles");
for (int i = 0; i < jsonArray.length(); i++) {
News news = new News();
news.setHeading(String.valueOf(article_heading.add(jsonArray.getJSONObject(i).optString("title"))));
// article_heading.add(jsonArray.getJSONObject(i).optString("title"));
Log.d("news_JSON", article_heading.toString());
Log.d("news", news.getHeading().toString());
news_list.add(news);
}
} catch (JSONException e) {
e.printStackTrace();
}
mViewAdapter = new MyAdapter(news_list);
mRecyclerView.setAdapter(mViewAdapter);
mViewAdapter.notifyDataSetChanged();
super.onPostExecute(s);
}
}
}
MyAdapter Code:
public class MyAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolder> {
private List<News> newsArticleList;
public class ViewHolder extends RecyclerView.ViewHolder{
public TextView title;
//description, genre;
public ViewHolder(View itemView) {
super(itemView);
title = (TextView) itemView.findViewById(R.id.textView_articleHeading);
// description = (TextView) itemView.findViewById(R.id.textView_description);
// image = (TextView) itemView.findViewById(R.id.rating);
}
}
public MyAdapter (List<News> newsArticleList){
this.newsArticleList = newsArticleList;
}
#Override
public MyAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View itemView = LayoutInflater.from(parent.getContext()).inflate(R.layout.content_main, parent, false);
return new ViewHolder(itemView);
}
#Override
public void onBindViewHolder(MyAdapter.ViewHolder holder, int position) {
News news = newsArticleList.get(position);
holder.title.setText(news.getHeading());
}
#Override
public int getItemCount() {
return newsArticleList.size();
}
}
News.Java;
public class News {
private String heading;
//private String descrpiton;
private String img;
public String getHeading() {
return heading;
}
public void setHeading(String heading) {
this.heading = heading;
}
public String getImg() {
return img;
}
public void setImg(String img) {
this.img = img;
}
}

Your problem is here
news.setHeading(String.valueOf(article_heading.add(jsonArray.getJSONObject(i).optString("title"))));
article_heading is an ArrayList, the method add returns a boolean to whether the list has changed due to your call or not.
You are not adding the title, you are adding the return of the ArrayList method, what you need is to change that line to that
String title = jsonArray.getJSONObject(i).optString("title");
article_heading.add(title);
news.setHeading(title);

change your onPostExecute as below
protected void onPostExecute(String s) {
try {
JSONObject jsonObject = new JSONObject(result);
JSONArray jsonArray = jsonObject.getJSONArray("articles");
for (int i = 0; i < jsonArray.length(); i++) {
News news = new News();
String headingFromJson = jsonArray.getJSONObject(i).getString("title");
article_heading.add(headingFromJson);
news.setHeading(headingFromJson);
// article_heading.add(jsonArray.getJSONObject(i).optString("title"));
Log.d("news_JSON", article_heading.toString());
Log.d("news", news.getHeading().toString());
news_list.add(news);
}
} catch (JSONException e) {
e.printStackTrace();
}
mViewAdapter = new MyAdapter(news_list);
mRecyclerView.setAdapter(mViewAdapter);
mViewAdapter.notifyDataSetChanged();
super.onPostExecute(s);
}

You are setting the heading of the news in a wrong way.
You should be doing the following in your Aynctask:
news.setHeading(jsonArray.getJsonObject(i).getString("title"));
You are instead putting the title inside the arraylist using add method. And putting the result of the add method as the heading. Add method of arraylist returns a boolean value indicating if the addition to list was successful or not. Thus you keep getting true instead of the actual text

Try this:
In yout ParseNewsJSON class onpostexecute()
Change to :
for (int i = 0; i < jsonArray.length(); i++) {
News news = new News();
news.setHeading(jsonArray.getJSONObject(i).optString("title"));
news_list.add(news);
}
Instead of:
for (int i = 0; i < jsonArray.length(); i++) {
News news = new News();
news.setHeading(String.valueOf(article_heading.add(jsonArray.getJSONObject(i).optString("title"))));
// article_heading.add(jsonArray.getJSONObject(i).optString("title"));
Log.d("news_JSON", article_heading.toString());
Log.d("news", news.getHeading().toString());
news_list.add(news);
}

Adapter Can't Load Image from JSON on Android

i have some problem with my JSON code.
I want to display a list that contain text and image. The text and image stored on my online database, i using JSON for taking them down to my android app.
The JSON doesn't display any error, the text are displayed but the image are not appear.
I check the logcat and there's no error for this process. I using viewAdapter for displaying the image on the list.
Please master help me, can you gimme some simple explanation how to solve this??
Thanks...
NB. This is my code for HomeFragment.java (where i doing the JSON).
public class HomeFragment extends Fragment implements InternetConnectionListener, ApiHandler.ApiHandlerListener {
private static final String ARG_SECTION_NUMBER = "section_number";
private final int CATEGORY_ACTION = 1;
private CategorySelectionCallbacks mCallbacks;
private ArrayList<Category> categoryList;
private ListView categoryListView;
private String Error = null;
private InternetConnectionListener internetConnectionListener;
public HomeFragment() {
}
public static HomeFragment newInstance(int sectionNumber) {
HomeFragment fragment = new HomeFragment();
Bundle args = new Bundle();
args.putInt(ARG_SECTION_NUMBER, sectionNumber);
fragment.setArguments(args);
return fragment;
}
#Override
public void onAttach(Activity activity) {
super.onAttach(activity);
((HomeActivity) activity).onSectionAttached(getArguments().getInt(ARG_SECTION_NUMBER));
try {
mCallbacks = (CategorySelectionCallbacks) activity;
} catch (ClassCastException e) {
throw new ClassCastException("Activity must implement CategorySelectionCallbacks.");
}
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_home, container, false);
categoryListView = (ListView) rootView.findViewById(R.id.categoryListView);
return rootView;
}
#Override
public void onResume() {
super.onResume();
if (UtilMethods.isConnectedToInternet(getActivity())) {
initCategoryList();
} else {
internetConnectionListener = (InternetConnectionListener) HomeFragment.this;
showNoInternetDialog(getActivity(), internetConnectionListener,
getResources().getString(R.string.no_internet),
getResources().getString(R.string.no_internet_text),
getResources().getString(R.string.retry_string),
getResources().getString(R.string.exit_string), CATEGORY_ACTION);
}
}
public class getCategList extends AsyncTask<Void, Void, Void>{
#Override
protected Void doInBackground(Void... params) {
/**
* json is populating from text file. To make api call use ApiHandler class
*
* <CODE>ApiHandler apiHandler = new ApiHandler(this, URL_GET_CATEGORY);</CODE> <BR>
* <CODE>apiHandler.doApiRequest(ApiHandler.REQUEST_GET);</CODE> <BR>
*
* You will get the response in onSuccessResponse(String tag, String jsonString) method
* if successful api call has done. Do the parsing as the following.
*/
URL hp = null;
try {
hp = new URL(
getString(R.string.liveurl) + "foodcategory.php");
Log.d("URL", "" + hp);
URLConnection hpCon = hp.openConnection();
hpCon.connect();
InputStream input = hpCon.getInputStream();
BufferedReader r = new BufferedReader(new InputStreamReader(input));
String x = "";
x = r.readLine();
String total = "";
while (x != null) {
total += x;
x = r.readLine();
}
Log.d("UR1L", "" + total);
JSONArray j = new JSONArray(total);
Log.d("URL1", "" + j.length());
categoryList = new ArrayList<Category>();
for (int i = 0; i < j.length(); i++) {
Category category = new Category();// buat variabel category
JSONObject Obj;
Obj = j.getJSONObject(i); //sama sperti yang lama, cman ini lebih mempersingkat karena getJSONObject cm d tulis sekali aja disini
category.setId(Obj.getString(JF_ID));
category.setTitle(Obj.getString(JF_TITLE));
category.setIconUrl(Obj.getString(JF_ICON));
if (!TextUtils.isEmpty(Obj.getString(JF_BACKGROUND_IMAGE))) {
category.setImageUrl(Obj.getString(JF_BACKGROUND_IMAGE));
}
Log.d("URL1",""+Obj.getString(JF_TITLE));
categoryList.add(category);
}
getActivity().runOnUiThread(new Runnable() {
#Override
public void run() {
categoryListView.setAdapter(new CategoryAdapter(getActivity(), mCallbacks, categoryList));
}
});
}catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
Error = e.getMessage();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
Error = e.getMessage();
} catch (JSONException e) {
// TODO Auto-generated catch block
Error = e.getMessage();
e.printStackTrace();
} catch (NullPointerException e) {
// TODO: handle exception
Error = e.getMessage();
}
return null;
}
}
//! function for populate category list
private void initCategoryList() {
new getCategList().execute();
}
#Override
public void onConnectionEstablished(int code) {
if (code == CATEGORY_ACTION) {
initCategoryList();
}
}
#Override
public void onUserCanceled(int code) {
if (code == CATEGORY_ACTION) {
getActivity().finish();
}
}
//! catch json response from here
#Override
public void onSuccessResponse(String tag, String jsonString) {
//! do same parsing as done in initCategoryList()
}
//! detect response error here
#Override
public void onFailureResponse(String tag) {
}
//! callback interface listen by HomeActivity to detect user click on category
public static interface CategorySelectionCallbacks {
void onCategorySelected(String catID, String title);
}
}
This code for categoryAdapter.java (where i put the result of JSON to the list)
public class CategoryAdapter extends ArrayAdapter<Category> implements View.OnClickListener {
private final LayoutInflater inflater;
private final ArrayList<Category> categoryList;
private Activity activity;
private HomeFragment.CategorySelectionCallbacks mCallbacks;
private String dummyUrl = "http://www.howiwork.org";
AbsListView.LayoutParams params;
public CategoryAdapter(Activity activity, HomeFragment.CategorySelectionCallbacks mCallbacks, ArrayList<Category> categoryList) {
super(activity, R.layout.layout_category_list);
this.activity = activity;
this.inflater = LayoutInflater.from(activity.getApplicationContext());
this.categoryList = categoryList;
this.mCallbacks = mCallbacks;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder row;
if (convertView == null) {
convertView = inflater.inflate(R.layout.layout_category_list, null);
row = new ViewHolder();
row.bannerImage = (ImageView) convertView.findViewById(R.id.catBannerImageView);
row.categoryImage = (ImageView) convertView.findViewById(R.id.catImageView);
row.categoryName = (TextView) convertView.findViewById(R.id.catNameTV);
} else {
row = (ViewHolder) convertView.getTag();
}
Category category = categoryList.get(position);
Picasso.with(activity).load(UtilMethods
.getDrawableFromFileName(activity,category.getIconUrl()))
.tag(category.getIconUrl())
.into(row.categoryImage);
row.categoryName.setText(category.getTitle());
Picasso.with(activity)
.load(UtilMethods.getDrawableFromFileName(activity,category.getImageUrl()))
.placeholder(R.drawable.img_banner_placeholder)
.tag(category.getIconUrl())
.fit()
.into(row.bannerImage);
row.bannerImage.setOnClickListener(this);
row.categoryImage.setTag(position);
row.categoryName.setTag(position);
row.bannerImage.setTag(position);
return convertView;
}
#Override
public int getCount() {
return categoryList.size();
}
#Override
public void onClick(View v) {
int position = Integer.parseInt(v.getTag().toString());
mCallbacks.onCategorySelected(categoryList.get(position).getId(),
categoryList.get(position).getTitle());
}
private static class ViewHolder {
public ImageView bannerImage;
public TextView categoryName;
public ImageView categoryImage;
}
}

Try this.
Picasso.with(activity).load(category.getIconUrl())
.into(row.categoryImage);
If it worked !. You Check the UtilMethods.getDrawableFromFileName() !!!

java.lang.IllegalStateException:The application's PagerAdapter changed the adapter's contents without calling PagerAdapter#notifyDataSetChanged

I have a sliding image that extends pageradapter. At first it was working. But when i open new activity then press the back button the app is crashing and i've got this error :
java.lang.IllegalStateException: The application's PagerAdapter changed the adapter's contents without calling PagerAdapter#notifyDataSetChanged! Expected adapter item count: 10, found: 0 Pager id: malate.denise.chelsie.igphthesisbfinal:id/pager Pager class: class android.support.v4.view.ViewPager Problematic adapter: class malate.denise.chelsie.igphthesisbfinal.SlidingImage_Adapter
Here's my SlidingImage_Adapter.class
public class SlidingImage_Adapter extends PagerAdapter {
private ArrayList<Pictures> IMAGES;
private LayoutInflater inflater;
private Context context;
public SlidingImage_Adapter(Context context,ArrayList<Pictures> IMAGES) {
this.context = context;
this.IMAGES=IMAGES;
inflater = LayoutInflater.from(context);
}
#Override
public void destroyItem(ViewGroup container, int position, Object object) {
container.removeView((View) object);
}
#Override
public int getCount() {
return IMAGES.size();
}
#Override
public Object instantiateItem(ViewGroup view, int position) {
View imageLayout = inflater.inflate(R.layout.slidingimage_layout, view, false);
assert imageLayout != null;
final ImageView imageView = (ImageView) imageLayout
.findViewById(R.id.image);
new DownloadImageTask(imageView).execute(IMAGES.get(position).getPhotopath());
// imageView.setImageResource(IMAGES.get(position));
view.addView(imageLayout, 0);
return imageLayout;
}
#Override
public boolean isViewFromObject(View view, Object object) {
return view.equals(object);
}
#Override
public void restoreState(Parcelable state, ClassLoader loader) {
notifyDataSetChanged();
}
#Override
public Parcelable saveState() {
return null;
}
and my AttractionInfo.class
public class AttractionInfo extends ActionBarActivity implements View.OnClickListener {
TextToSpeech tts;
TextView nameofplace,location,exact_address,operatinghours,info;
String nameofplace_s,location_s,exact_address_s,operatinghours_s,info_s,latlang_s,path_s,category_s;
ImageView play,rate,addtoplan,map;
ArrayList<Pictures> records;
private static ViewPager mPager;
private static int currentPage = 0;
String line=null;
private static int NUM_PAGES = 0;
Toolbar toolbar;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_attraction_info);
map = (ImageView)findViewById(R.id.map);
map.setOnClickListener(this);
records=new ArrayList<Pictures>();
nameofplace = (TextView) findViewById(R.id.nameofplace);
info = (TextView) findViewById(R.id.info);
exact_address = (TextView) findViewById(R.id.exact_address);
location = (TextView)findViewById(R.id.location);
operatinghours=(TextView)findViewById(R.id.operatinghours);
play = (ImageView) findViewById(R.id.play);
rate = (ImageView) findViewById(R.id.rate);
addtoplan = (ImageView)findViewById(R.id.addtoplan);
addtoplan.setOnClickListener(this);
Bundle extras = getIntent().getExtras();
play.setOnClickListener(this);
rate.setOnClickListener(this);
toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setHomeButtonEnabled(true);
getSupportActionBar().setDisplayShowHomeEnabled(true);
getSupportActionBar().setHomeAsUpIndicator(R.drawable.abc_ic_ab_back_mtrl_am_alpha);
toolbar.setNavigationIcon(R.drawable.abc_ic_ab_back_mtrl_am_alpha);
toolbar.setNavigationOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
onBackPressed();
}
});
getSupportActionBar().setDisplayShowTitleEnabled(false);
tts = new TextToSpeech(AttractionInfo.this, new TextToSpeech.OnInitListener() {
#Override
public void onInit(int status) {
if (status != TextToSpeech.ERROR){
tts.setLanguage(Locale.ENGLISH);
}
}
});
if (extras != null) {
nameofplace_s = extras.getString("name");
nameofplace.setText(nameofplace_s);
info_s = extras.getString("description");
info.setText(info_s);
exact_address_s = extras.getString("exactaddress");
exact_address.setText(exact_address_s);
location_s = extras.getString("location");
location.setText(location_s);
operatinghours_s=extras.getString("operatinghours");
operatinghours.setText(operatinghours_s);
latlang_s = extras.getString("latlang");
path_s=extras.getString("path");
category_s = extras.getString("category");
}
}
public void onStart() {
super.onStart();
fetchphoto bt = new fetchphoto();
bt.execute();
}
#Override
protected void onPause() {
if (tts != null){
tts.stop();
tts.shutdown();
}
super.onPause();
}
#Override
public void onClick(View v) {
if (v == play) {
String speech1 = nameofplace.getText().toString();
String speech2 = info.getText().toString();
String speech = speech1 + "." + speech2;
tts.speak(speech, TextToSpeech.QUEUE_FLUSH, null);
} else if (v==rate){
Intent myIntent = new Intent(this, ListOfReviews.class);
myIntent.putExtra("placename", nameofplace_s);
myIntent.putExtra("category",category_s);
startActivity(myIntent);
}else if(v==addtoplan){
Intent myIntent = new Intent(this, AddPlan.class);
myIntent.putExtra("placename", nameofplace_s);
myIntent.putExtra("category",category_s);
startActivity(myIntent);
}else if (v == map){
Intent myIntent = new Intent(this, Map.class);
myIntent.putExtra("placename", nameofplace_s);
myIntent.putExtra("category",category_s);
myIntent.putExtra("latlang",latlang_s);
myIntent.putExtra("address",exact_address_s);
myIntent.putExtra("path",path_s);
startActivity(myIntent);
}
}
private void init() {
SlidingImage_Adapter adapter = new SlidingImage_Adapter(this,records);
for(int i=0;i<records.size();i++){
Pictures pics = records.get(i);
String pic = pics.getPhotopath();
adapter.notifyDataSetChanged();
}
mPager = (ViewPager) findViewById(R.id.pager);
mPager.setAdapter(adapter);
CirclePageIndicator indicator = (CirclePageIndicator)
findViewById(R.id.indicator);
indicator.setViewPager(mPager);
final float density = getResources().getDisplayMetrics().density;
indicator.setRadius(5 * density);
NUM_PAGES =records.size();
// Auto start of viewpager
final Handler handler = new Handler();
final Runnable Update = new Runnable() {
public void run() {
if (currentPage == NUM_PAGES) {
currentPage = 0;
}
mPager.setCurrentItem(currentPage++, true);
}
};
Timer swipeTimer = new Timer();
swipeTimer.schedule(new TimerTask() {
#Override
public void run() {
handler.post(Update);
}
},5000, 5000);
// Pager listener over indicator
indicator.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
#Override
public void onPageSelected(int position) {
currentPage = position;
}
#Override
public void onPageScrolled(int pos, float arg1, int arg2) {
}
#Override
public void onPageScrollStateChanged(int pos) {
}
});
}
private class fetchphoto extends AsyncTask<Void, Void, Void> {
ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
protected void onPreExecute() {
super.onPreExecute();
}
protected Void doInBackground(Void... params) {
InputStream is = null;
String result = "";
nameValuePairs.add(new BasicNameValuePair("cityname", nameofplace_s));
try
{
records.clear();
HttpParams httpParams = new BasicHttpParams();
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("http://igph.esy.es/getphoto.php");
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
HttpResponse response = httpclient.execute(httppost);
HttpEntity entity = response.getEntity();
is = entity.getContent();
Log.e("pass 1", "connection success ");
}
catch(Exception e)
{
Log.e("Fail 1", e.toString());
}
try
{
BufferedReader reader = new BufferedReader
(new InputStreamReader(is,"utf-8"),8);
StringBuilder sb = new StringBuilder();
while ((line = reader.readLine()) != null)
{
sb.append(line + "\n");
}
is.close();
result = sb.toString();
Log.e("pass 2", "connection success ");
}
catch(Exception e)
{
Log.e("Fail 2", e.toString());
}
//parse json data
try {
Log.i("tagconvertstr", "["+result+"]");
// Remove unexpected characters that might be added to beginning of the string
result = result.substring(result.indexOf(""));
JSONArray jArray = new JSONArray(result);
for (int i = 0; i < jArray.length(); i++) {
JSONObject json_data = jArray.getJSONObject(i);
Pictures p = new Pictures();
p.setPhotoname(json_data.getString("photo_name"));
p.setPlacename(json_data.getString("place_name"));
p.setCategory(json_data.getString("category"));
p.setPhotopath(json_data.getString("path"));
records.add(p);
}
} catch (Exception e) {
Log.e("ERROR", "Error pasting data " + e.toString());
}
return null;
}
protected void onPostExecute(Void result) {
// if (pd != null) pd.dismiss(); //close dialog
Log.e("size", records.size() + "");
init();
}
}
}
I've red some similar problems and learned that adding notifychanged may solved the problem but i dont where to place it. Hope you can help m . thanks

accessing specific itemview in listview in button onclick method

public class DisplayAllBets extends ActionBarActivity {
private String user1 = "user";
private static String url_all_games = "**";
private static String url_update_bet = "**";
// Progress Dialog
private ProgressDialog pDialog;
private ProgressDialog tDialog;
private BetDisplayer currentitem;
private HashMap<String, String> userhash = new HashMap<>();
private ArrayList<BetDisplayer> listwriter = new ArrayList<>();
private HashMap<String, String> useroutcomes = new HashMap<>();
private HashMap<String, String> finalhash = new HashMap<>();
private ArrayList<Map<String, String>> passtocheck = new ArrayList<>();
private HashMap<String, HashMap<String, String>> passtocheckver2 = new HashMap<>();
private String name;
private HashMap<String, String> allopens = new HashMap<>();
JSONParser jsonParser = new JSONParser();
// Creating JSON Parser object
JSONParsers jParser = new JSONParsers();
ArrayList<HashMap<String, String>> bet;
// url to get all products list
// JSON Node names
private static final String TAG_SUCCESS = "success";
private static final String TAG_BET = "bet";
private static final String TAG_ID = "id";
private static final String TAG_STAKE = "stake";
private static final String TAG_USER = "user";
private static final String TAG_RETURNS = "returns";
private static final String TAG_TEAMS = "teams";
private static final String TAG_STATUS = "status";
// products JSONArray
JSONArray allgames = null;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_display_all_bets);
name = (getIntent().getExtras().getString("user")).toLowerCase();
Log.d("name", name);
// Hashmap for ListView
bet = new ArrayList<HashMap<String, String>>();
// Loading products in Background Thread
new LoadAllGames().execute();
}
/**
* Background Async Task to Load all product by making HTTP Request
*/
class LoadAllGames extends AsyncTask<String, String, String> {
private String id;
private String stake;
private String user;
private String returns;
private String teams;
private String status;
// *//**
// * Before starting background thread Show Progress Dialog
// *//*
#Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(DisplayAllBets.this);
pDialog.setMessage("Loading Games. Please wait...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(false);
}
// *//**
// * getting All products from url
// *//*
protected String doInBackground(String... args) {
// Building Parameters
HttpClient client = new DefaultHttpClient();
HttpPost post = new HttpPost(url_all_games);
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("email", name));
try {
post.setEntity(new UrlEncodedFormEntity(params));
} catch (IOException ioe) {
ioe.printStackTrace();
}
try {
HttpResponse response = client.execute(post);
Log.d("Http Post Response:", response.toString());
HttpEntity httpEntity = response.getEntity();
InputStream is = httpEntity.getContent();
JSONObject jObj = null;
String json = "";
try {
BufferedReader reader = new BufferedReader(new InputStreamReader(
is, "iso-8859-1"), 8);
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
if (!line.startsWith("<", 0)) {
if (!line.startsWith("(", 0)) {
sb.append(line + "\n");
}
}
}
is.close();
json = sb.toString();
json = json.substring(json.indexOf('{'));
Log.d("sb", json);
} catch (Exception e) {
Log.e("Buffer Error", "Error converting result " + e.toString());
}
// try parse the string to a JSON object
try {
jObj = new JSONObject(json);
} catch (JSONException e) {
Log.e("JSON Parser", "Error parsing data " + e.toString());
}
// return JSON String
Log.d("json", jObj.toString());
try {
allgames = jObj.getJSONArray(TAG_BET);
Log.d("allgames", allgames.toString());
ArrayList<BetDatabaseSaver> listofbets = new ArrayList<>();
// looping through All Products
for (int i = 0; i < allgames.length(); i++) {
JSONObject c = allgames.getJSONObject(i);
// Storing each json item in variable
String id = c.getString(TAG_ID);
String user = c.getString(TAG_USER);
String returns = c.getString(TAG_RETURNS);
String stake = c.getString(TAG_STAKE);
String status = c.getString(TAG_STATUS);
String Teams = c.getString(TAG_TEAMS);
Log.d("id", id);
Log.d("user", user);
Log.d("returns", returns);
Log.d("stake", stake);
Log.d("status", status);
Log.d("teams", Teams);
// creating new HashMap
HashMap<String, String> map = new HashMap<String, String>();
// adding each child node to HashMap key => value
map.put(TAG_ID, id);
map.put(TAG_TEAMS, Teams);
map.put(TAG_USER, user);
map.put(TAG_RETURNS, returns);
map.put(TAG_STAKE, stake);
map.put(TAG_STATUS, status);
if (status.equals("open")) {
useroutcomes.put(id.substring(0, 10), Teams);
}
listwriter.add(i, new BetDisplayer(user, id, Integer.parseInt(stake), Integer.parseInt(returns), status, Teams));
// adding HashList to ArrayList
bet.add(map);
}
} catch (JSONException e) {
e.printStackTrace();
}
} catch (IOException ioe) {
ioe.printStackTrace();
}
return "";
}
#Override
protected void onPostExecute(String param) {
// dismiss the dialog after getting all products
// updating UI from Background Thread
String ultparam = "";
int i = 0;
for (HashMap<String, String> a : bet) {
String teams = a.get(TAG_TEAMS);
Map<String, String> listofteams = new HashMap<>();
Pattern p = Pattern.compile("[(](\\d+)/([1X2])[)]");
Matcher m = p.matcher(teams);
Log.d("printa", teams);
while (m.find()) {
listofteams.put(m.group(1), m.group(2));
}
Log.d("dede", listofteams.toString());
String c = "";
for (String x : listofteams.keySet()) {
String b = x + ",";
c = c + b;
}
Log.d("C", c);
c = c.substring(0, c.lastIndexOf(","));
// Log.d("Cproc", c);
if (a.get(TAG_STATUS).equals("open")) {
ultparam = ultparam + a.get(TAG_ID).substring(0, 10) + c + "//";
passtocheck.add(listofteams);
allopens.put(Integer.toString(i), a.get(TAG_STATUS));
i++;
}
i++;
}
ultparam = ultparam.substring(0, ultparam.lastIndexOf("//"));
Log.d("ULTPARAM", ultparam);
CheckBet checker = new CheckBet(ultparam, passtocheck);
HashMap<String, String> finaloutcomes = checker.checkbetoutcome();
Log.d("Finaloutcomes", finaloutcomes.toString());
for (String x : finaloutcomes.keySet()) {
for (int p = 0; p < listwriter.size(); p++) {
if (listwriter.get(p).getId().substring(0, 10).equals(x)) {
String[] finaloutcomearray = finaloutcomes.get(x).split(" ");
String[] useroutcomearray = listwriter.get(p).getSelections().split(" ");
for (int r = 0; r < finaloutcomearray.length; r++) {
Log.d("finaloutcomearray", finaloutcomearray[r]);
Log.d("useroutcomearray", useroutcomearray[r]);
String[] indfinaloutcomesarray = finaloutcomearray[r].split("\\)");
String[] induseroutcomearray = useroutcomearray[r].split("\\)");
for (int d = 0; d < indfinaloutcomesarray.length; d++) {
Log.d("indfinaloutcome", indfinaloutcomesarray[d]);
Log.d("induseroutcome", induseroutcomearray[d]);
finalhash.put(indfinaloutcomesarray[d].substring(1, indfinaloutcomesarray[d].lastIndexOf("/")), indfinaloutcomesarray[d].substring(indfinaloutcomesarray[d].lastIndexOf("/") + 1));
userhash.put(induseroutcomearray[d].substring(1, induseroutcomearray[d].lastIndexOf("/")), induseroutcomearray[d].substring(induseroutcomearray[d].lastIndexOf("/") + 1));
}
}
Log.d("FINALHASHfinal", finalhash.toString());
Log.d("USERHASHfinal", userhash.toString());
listwriter.get(p).setStatus("won");
for (String id : userhash.keySet()) {
if (finalhash.get(id).equals("null")){
listwriter.get(p).setStatus("open");
}
else if (!(finalhash.get(id).equals(userhash.get(id)))) {
listwriter.get(p).setStatus("lost");
break;
}
}
finalhash.clear();
userhash.clear();
currentitem = listwriter.get(p);
new UpdateBetStatus().execute();
}
}
}
Log.d("USEROUTCOMES", useroutcomes.toString());
PopulateList();
}
}
#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_display_all_bets, 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);
}
class UpdateBetStatus extends AsyncTask<String, String, String> {
/**
* Before starting background thread Show Progress Dialog
* *
*/
#Override
protected void onPreExecute() {
super.onPreExecute();
tDialog = new ProgressDialog(DisplayAllBets.this);
tDialog.setMessage("Loading your bets! Good luck!");
tDialog.setIndeterminate(false);
tDialog.setCancelable(true);
}
/**
* Creating product
* *
*/
protected String doInBackground(String... args) {
// Building Parameters
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("id", currentitem.getId()));
params.add(new BasicNameValuePair("stake", Integer.toString(currentitem.getStake())));
params.add(new BasicNameValuePair("user", name));
params.add(new BasicNameValuePair("returns", Integer.toString(currentitem.getReturns())));
params.add(new BasicNameValuePair("teams", currentitem.getSelections()));
params.add(new BasicNameValuePair("status", currentitem.getStatus()));
// getting JSON Object
// Note that create product url accepts POST method
JSONObject json = jsonParser.makeHttpRequest(url_update_bet,
"POST", params);
// check log cat fro response
Log.d("Printing", json.toString());
// check for success tag
try {
int success = json.getInt(TAG_SUCCESS);
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
/**
* After completing background task Dismiss the progress dialog
* * * *
*/
protected void onPostExecute(String file_url) {
// dismiss the dialog once done
}
}
private class MyListAdapter extends ArrayAdapter<BetDisplayer> {
public MyListAdapter() {
super(DisplayAllBets.this, R.layout.activity_singletotalbet, listwriter);
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
View itemView = convertView;
if (itemView == null) {
itemView = getLayoutInflater().inflate(R.layout.activity_singletotalbet, parent, false);
}
BetDisplayer currentwriter = listwriter.get(position);
Log.d("TESTING", currentwriter.getSelections());
Button v = (Button) itemView.findViewById(R.id.detailsbutton);
v.setTag(Integer.toString(position));
Log.d("TESTING2", currentwriter.getSelections());
String selections = currentwriter.getSelections();
int numberofselections = 0;
for (int i = 0; i < selections.length(); i++) {
if (selections.charAt(i) == '/') {
numberofselections++;
}
}
if (numberofselections == 1) {
TextView descriptor = (TextView) itemView.findViewById(R.id.no);
descriptor.setText("Single");
} else if (numberofselections == 2) {
TextView descriptor = (TextView) itemView.findViewById(R.id.no);
descriptor.setText("Double");
} else if (numberofselections == 3) {
TextView descriptor = (TextView) itemView.findViewById(R.id.no);
descriptor.setText("Treble");
} else {
TextView descriptor = (TextView) itemView.findViewById(R.id.no);
descriptor.setText("Accumulator" + "(" + numberofselections + ")");
}
TextView status = (TextView) itemView.findViewById(R.id.status);
status.setText(currentwriter.getStatus());
return itemView;
}
}
private void PopulateList() {
ArrayAdapter<BetDisplayer> adapter = new MyListAdapter();
final ListView list = (ListView) findViewById(R.id.betslistviews);
list.setAdapter(adapter);
}
public void Viewdetails(View v) {
Button b = (Button) v;
int position = Integer.parseInt((String) v.getTag());
final ListView list = (ListView) findViewById(R.id.betslistviews);
String stake;
String winnings;
String token;
String teams;
String typeofbet;
list.setOnItemClickListener(new AdapterView.OnItemClickListener() {
public void onItemClick(AdapterView<?> adapter, View v, int position, long id) {
TextView status = (TextView) v.findViewById(R.id.status);
Log.d("STATUSTESTING",status.getText().toString());
}
});
}
I have a populated listview. Each item in the list contains a button and a few TextViews, in the following format.
I created a method which is run when any of the buttons is clicked. What I need it to do is to retrieve that particular itemView at that position in the listview so I can access the TextViews in that itemview. This is my code but it isn't working atm.
public void Viewdetails(View v) {
Button b = (Button) v;
int position = Integer.parseInt((String) v.getTag());
final ListView list = (ListView) findViewById(R.id.betslistviews);
String stake;
String winnings;
String token;
String teams;
String typeofbet;
list.setOnItemClickListener(new AdapterView.OnItemClickListener() {
public void onItemClick(AdapterView<?> adapter, View v, int position, long id) {
View selItem = (View) list.getItemAtPosition(position);
TextView status = (TextView) selItem.findViewById(R.id.status);
Log.d("STATUSTESTING",status.getText().toString());
}
});
}

Assuming your ListView listener starts here.
list.setOnItemClickListener(new AdapterView.OnItemClickListener() {
public void onItemClick(AdapterView<?> adapter, View v, int position, long id) {
View selItem = (View) list.getItemAtPosition(position);
TextView status = (TextView) selItem.findViewById(R.id.status);
Log.d("STATUSTESTING",status.getText().toString());
}
});
You don't have to write
View selItem = (View) list.getItemAtPosition(position);
since you already got reference to the particular View in ListView from the overridden onItemClick method.
So you can skip that line and directly access TextView
TextView status = (TextView) v.findViewById(R.id.status);
Finally the code will be like
list.setOnItemClickListener(new AdapterView.OnItemClickListener() {
public void onItemClick(AdapterView<?> adapter, View v, int position, long id) {
//Already got reference to View v
TextView status = (TextView) v.findViewById(R.id.status);
Log.d("STATUSTESTING",status.getText().toString());
}
});

To catch onListItemClick add listener in PopulateList() method:
private void PopulateList() {
ArrayAdapter<BetDisplayer> adapter = new MyListAdapter();
final ListView list = (ListView) findViewById(R.id.betslistviews);
list.setAdapter(adapter);
list.setOnItemClickListener(new AdapterView.OnItemClickListener() {
public void onItemClick(AdapterView<?> adapter, View v, int position, long id) {
// Change children of list item here
TextView status = (TextView) v.findViewById(R.id.status);
Log.d("STATUSTESTING",status.getText().toString());
}
});
}
To catch click on button in your list item you need in your adapter's getView() method add click listener to button:
#Override
public View getView(int position, View convertView, ViewGroup parent) {
Button v = (Button) itemView.findViewById(R.id.detailsbutton);
v.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
// Handle button click
}
});
}
EDIT:
To store data create fields in Activity and setters for it:
private String text1;
private String text2;
public void setText1(String text){
text1 = text;
}
public void setText2(String text){
text2 = text;
}
Then set it in button click listener:
#Override
public View getView(int position, View convertView, ViewGroup parent) {
TextView tv1 = (TextView) itemView.findViewById(R.id.textview1_id);
TextView tv2 = (TextView) itemView.findViewById(R.id.textview2_id);
Button v = (Button) itemView.findViewById(R.id.detailsbutton);
v.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
setText1(tv1.getText());
setText2(tv2.getText());
}
});
}

Android strange error

I have made an listview application, then i created a new one with fragments and want to implement listview to fragments. But when i do i got an strange error.
public class Fragment1 extends Fragment {
private ArrayList<FeedItem> feedList = null;
private ProgressBar progressbar = null;
private ListView feedListView = null;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.list_row_layout, container, false);
progressbar = (ProgressBar)rootView.findViewById(R.id.progressBar);
String url = "";
new DownloadFilesTask().execute(url);
return rootView;
}
public void updateList() {
feedListView= (ListView)getActivity().findViewById(R.id.custom_list);
feedListView.setVisibility(View.VISIBLE);
progressbar.setVisibility(View.GONE);
**feedListView.setAdapter(new CustomListAdapter(this, feedList));**
feedListView.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> a, View v, int position, long id) {
Object o = feedListView.getItemAtPosition(position);
FeedItem newsData = (FeedItem) o;
**Intent intent = new Intent(FeedListActivity.this, FeedDetailsActivity.class);**
intent.putExtra("feed", newsData);
startActivity(intent);
}
});
}
public class DownloadFilesTask extends AsyncTask<String, Integer, Void> {
#Override
protected void onProgressUpdate(Integer... values) {
}
#Override
protected void onPostExecute(Void result) {
if (null != feedList) {
updateList();
}
}
#Override
protected Void doInBackground(String... params) {
String url = params[0];
// getting JSON string from URL
JSONObject json = getJSONFromUrl(url);
//parsing json data
parseJson(json);
return null;
}
}
public JSONObject getJSONFromUrl(String url) {
InputStream is = null;
JSONObject jObj = null;
String json = null;
// Making HTTP request
try {
// defaultHttpClient
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost(url);
HttpResponse httpResponse = httpClient.execute(httpPost);
HttpEntity httpEntity = httpResponse.getEntity();
is = httpEntity.getContent();
BufferedReader reader = new BufferedReader(new InputStreamReader(
is, "iso-8859-1"), 8);
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
is.close();
json = sb.toString();
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
try {
jObj = new JSONObject(json);
} catch (JSONException e) {
Log.e("JSON Parser", "Error parsing data " + e.toString());
}
// return JSON String
return jObj;
}
public void parseJson(JSONObject json) {
try {
// parsing json object
if (json.getString("status").equalsIgnoreCase("ok")) {
JSONArray posts = json.getJSONArray("posts");
feedList = new ArrayList<FeedItem>();
for (int i = 0; i < posts.length(); i++) {
JSONObject post = (JSONObject) posts.getJSONObject(i);
FeedItem item = new FeedItem();
item.setTitle(post.getString("title"));
item.setDate(post.getString("description"));
item.setId(post.getString("id"));
item.setUrl(post.getString("url"));
item.setContent(post.getString("description"));
JSONArray attachments = post.getJSONArray("attachments");
if (null != attachments && attachments.length() > 0) {
JSONObject attachment = attachments.getJSONObject(0);
if (attachment != null)
item.setAttachmentUrl(attachment.getString("url"));
}
feedList.add(item);
}
}
} catch (JSONException e) {
e.printStackTrace();
}
}
}
Problems are on this lines
feedListView.setAdapter(new CustomListAdapter(this, feedList));
Intent intent = new Intent(FeedListActivity.this, FeedDetailsActivity.class);
Multiple markers at this line
- Line breakpoint:Fragment1 [line: 57] - updateList()
- The constructor CustomListAdapter(Fragment1, ArrayList<FeedItem>) is
undefined
No enclosing instance of the type FeedListActivity is accessible in scope
CustomListAdapter:
public class CustomListAdapter extends BaseAdapter {
private ArrayList<FeedItem> listData;
private LayoutInflater layoutInflater;
private Context mContext;
public CustomListAdapter(Context context, ArrayList<FeedItem> listData) {
this.listData = listData;
layoutInflater = LayoutInflater.from(context);
mContext = context;
}
#Override
public int getCount() {
return listData.size();
}
#Override
public Object getItem(int position) {
return listData.get(position);
}
#Override
public long getItemId(int position) {
return position;
}
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder;
if (convertView == null) {
convertView = layoutInflater.inflate(R.layout.list_row_layout, null);
holder = new ViewHolder();
holder.headlineView = (TextView) convertView.findViewById(R.id.title);
holder.reportedDateView = (TextView) convertView.findViewById(R.id.date);
holder.imageView = (ImageView) convertView.findViewById(R.id.thumbImage);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
FeedItem newsItem = (FeedItem) listData.get(position);
holder.headlineView.setText(newsItem.getTitle());
holder.reportedDateView.setText(newsItem.getDate());
if (holder.imageView != null) {
new ImageDownloaderTask(holder.imageView).execute(newsItem.getAttachmentUrl());
}
return convertView;
}
static class ViewHolder {
TextView headlineView;
TextView reportedDateView;
ImageView imageView;
}
}

in this line feedListView.setAdapter(new CustomListAdapter(this, feedList)); just replace this with getActivity();