Can fragments retain the state of collected data of cardviews

Can fragments retain the state of collected data of cardviews - android

Before I change my design of my android application, I was wondering if I can retain the state of my fragment including all data collected when it is recreated. In my fragment i have an async task that collects the proper data usinf json and it publishes them to diffeerent cardviews. Here is my code:
LatestEventsFragment.java
public class LatestEventsFragment extends Fragment {
RecyclerView recyclerView;
RecyclerView.Adapter adapter;
ArrayList<Event> arrayList = new ArrayList();
ProgressDialog progressDialog;
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
setRetainInstance(true);
View view = inflater.inflate(R.layout.events_list, container, false);
LinearLayoutManager linearLayoutManager = new LinearLayoutManager(getActivity());
recyclerView = (RecyclerView)view.findViewById(R.id.events_recycler);
linearLayoutManager.setOrientation(LinearLayoutManager.VERTICAL);
recyclerView.setLayoutManager(linearLayoutManager);
recyclerView.setHasFixedSize(true);
adapter = new EventsRecyclerAdapter(arrayList);
recyclerView.setAdapter(adapter);
EventsAsyncTask eventsAsyncTask = new EventsAsyncTask();
eventsAsyncTask.execute();
return view;
}
class EventsAsyncTask extends AsyncTask<String, Event, String> {
#Override
protected void onPreExecute() {
progressDialog = new ProgressDialog(getActivity());
progressDialog.setTitle("Please wait...");
progressDialog.setMessage("Loading");
progressDialog.setIndeterminate(true);
progressDialog.setCancelable(false);
progressDialog.show();
}
#Override
protected void onPostExecute(String s) {
progressDialog.dismiss();
}
#Override
protected void onProgressUpdate(Event... values) {
arrayList.add(values[0]);
adapter.notifyDataSetChanged();
}
#Override
protected String doInBackground(String... params) {
try {
ServerConfig serverConfig = new ServerConfig();
URL url = new URL(serverConfig.getEvents_url());
HttpURLConnection httpURLConnection = (HttpURLConnection) url.openConnection();
InputStream inputStream = httpURLConnection.getInputStream();
BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream));
StringBuilder stringBuilder = new StringBuilder();
String line = "";
while((line = bufferedReader.readLine()) != null){
stringBuilder.append(line+"\n");
}
httpURLConnection.disconnect();
String json_string = stringBuilder.toString().trim();
JSONObject jsonObject = new JSONObject(json_string);
JSONArray jsonArray = jsonObject.getJSONArray("server_response");
int count = 0;
while(count<jsonArray.length()){
JSONObject JO = jsonArray.getJSONObject(count);
count++;
String jsonString = JO.get("image").toString();
byte[] temp = Base64.decode(jsonString.getBytes(), Base64.DEFAULT);
Bitmap decodedByte = BitmapFactory.decodeByteArray(temp, 0, temp.length);
SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss", Locale.US);
dateFormat.setTimeZone(TimeZone.getTimeZone("UCT"));
Date date = dateFormat.parse(JO.getString("date_posted"));
Date server_date = dateFormat.parse(JO.getString("server_date"));
Event event = new Event(JO.getString("name"), decodedByte, JO.getInt("views"), date, server_date);
publishProgress(event);
Thread.sleep(500);
}
} catch (Exception e){
e.printStackTrace();
}
return null;
}
}
}
EventsRecyclerAdapter.java
public class EventsRecyclerAdapter extends RecyclerView.Adapter<EventsRecyclerAdapter.RecyclerViewHolder>{
ArrayList<Event> arrayList = new ArrayList<>();
public EventsRecyclerAdapter(ArrayList<Event> arrayList){
this.arrayList = arrayList;
}
#Override
public RecyclerViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.latest_events_card, parent, false);
return new RecyclerViewHolder(view);
}
#Override
public void onBindViewHolder(RecyclerViewHolder holder, int position) {
Event event = arrayList.get(position);
try{
String views = String.valueOf(event.getViews())+" views";
String date_string = getTime(event.getServer_date().getTime() - event.getDate_posted().getTime());
holder.name.setText(event.getName());
holder.image.setImageBitmap(event.getImage());
holder.views.setText(views);
holder.date_posted.setText(date_string);
}catch (Exception e){
e.printStackTrace();
}
}
private String getTime(Long time_difference){
long secondsInMilli = 1000;
long minutesInMilli = secondsInMilli * 60;
long hoursInMilli = minutesInMilli * 60;
long daysInMilli = hoursInMilli * 24;
long elapsedDays = time_difference / daysInMilli;
int daysInt = (int)elapsedDays;
time_difference = time_difference % daysInMilli;
long elapsedHours = time_difference / hoursInMilli;
int hoursInt = (int)elapsedHours;
time_difference = time_difference % hoursInMilli;
long elapsedMinutes = time_difference / minutesInMilli;
int minutesInt = (int)elapsedMinutes;
//time_difference = time_difference % minutesInMilli;
//long elapsedSeconds = time_difference / secondsInMilli;
String date_string = String.valueOf(daysInt);
if(daysInt > 0) {
if (daysInt == 1) {
date_string = "1 Day";
} else if (daysInt > 1) {
date_string = daysInt + " Days";
}
}else if(hoursInt > 0){
if(hoursInt == 1){
date_string = "1 Hour ";
if(minutesInt > 1){
date_string = date_string + minutesInt + " Minutes";
}
} else if(hoursInt > 1){
date_string = hoursInt + " Hours ";
if(minutesInt > 1){
date_string = date_string + minutesInt + " Minutes";
}
}
}else if(minutesInt > 0){
if (minutesInt == 1) {
date_string = "1 Minute";
} else if (minutesInt > 1) {
date_string = minutesInt + " Minutes";
}
}
return date_string + " ago";
}
#Override
public int getItemCount() {
return arrayList.size();
}
public static class RecyclerViewHolder extends RecyclerView.ViewHolder{
protected TextView name, views, date_posted, start_date, end_date;
protected ImageView image;
public RecyclerViewHolder(View v){
super(v);
name = (TextView)v.findViewById(R.id.name);
image = (ImageView)v.findViewById(R.id.thumbnail);
views = (TextView)v.findViewById(R.id.views);
date_posted = (TextView)v.findViewById(R.id.date_posted);
}
}
}
and finally Events.java
public class Event {
private int id;
private String name;
private String description;
private String start_date;
private String end_date;
private double entrance_fee;
private Bitmap image;
private int views;
private Date date_posted;
private Date server_date;
public Event(String name, Bitmap image, int views, Date date_posted, Date server_date){
//int id, String name, , String start_date, double entrance_fee, Bitmap image, int views
this.setDescription(description);
this.setEnd_date(end_date);
this.setEntrance_fee(entrance_fee);
this.setId(id);
this.setImage(image);
this.setName(name);
this.setViews(views);
this.setStart_date(start_date);
this.setDate_posted(date_posted);
this.setServer_date(server_date);
}
public Date getServer_date() {
return server_date;
}
public void setServer_date(Date server_date) {
this.server_date = server_date;
}
public Date getDate_posted() {
return date_posted;
}
public void setDate_posted(Date date_posted) {
this.date_posted = date_posted;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
public String getStart_date() {
return start_date;
}
public void setStart_date(String start_date) {
this.start_date = start_date;
}
public String getEnd_date() {
return end_date;
}
public void setEnd_date(String end_date) {
this.end_date = end_date;
}
public double getEntrance_fee() {
return entrance_fee;
}
public void setEntrance_fee(double entrance_fee) {
this.entrance_fee = entrance_fee;
}
public Bitmap getImage() {
return image;
}
public void setImage(Bitmap image) {
this.image = image;
}
public int getViews() {
return views;
}
public void setViews(int views) {
this.views = views;
}
}

You can use onSaveInstanceState inside your Fragment to save your data, then check the savedInstanceState variable inside onCreateView to see if it has data. If it does, just retrieve the data to recreate your view.
Inside Fragment:
#Override
public void onSaveInstanceState(Bundle savedInstanceState) {
// Always call the superclass so it can save the view hierarchy state
super.onSaveInstanceState(savedInstanceState);
if(mDataToSave != null) {
savedInstanceState.putString("myData", mDataToSave);
}
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View rootView = inflater.inflate(R.layout.fragment_main, container, false);
if(savedInstanceState != null){
String restoredData = (String)savedInstanceState.getString("myData");
//do something with restoredData
}
return rootView;
}
Just remember to change the put and get: savedInstanceState.putString() to savedInstanceState.put<WhateverYourDataTypeIs>()
If you're adding your Fragment through a Fragment Transaction in your Main Activity, make sure to only add it if the Main Activity's savedInstanceState is null. That way you won't replace the Fragment if it's already been added.
Inside Activity (if you have a Fragment Transaction):
if(savedInstanceState == null) {
Fragment newFragment = new MyFragment();
//add main fragment to fragment frame
FragmentManager fragmentManager = getSupportFragmentManager();
fragmentManager.beginTransaction().add(R.id.fragment_container, newFragment).commit();
}

Related

How to add timestamps to an adapter

I am trying to make a Chat bubble and I need to insert the timestamps in each bubble, I have my adapter to insert the messages but I do not know how to add the timestamps, someone could tell me how to do it.
Here the MainActivity code:
public class MainActivity extends AppCompatActivity {
private ListView listView;
private View btnSend;
private EditText editText;
boolean myMessage = true;
private List<ChatBubble> ChatBubbles;
private ArrayAdapter<ChatBubble> adapter;
private TextView dateTimeTx;
private TextView dateTimeRx;
private String dateTime;
private String timestamp;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ChatBubbles = new ArrayList<>();
listView = (ListView) findViewById(R.id.list_msg);
btnSend = findViewById(R.id.btn_chat_send);
editText = (EditText) findViewById(R.id.msg_type);
//set ListView adapter first
adapter = new MessageAdapter(this, R.layout.tx_chat_bubble, ChatBubbles);
listView.setAdapter(adapter);
//event for button SEND
btnSend.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if (editText.getText().toString().trim().equals("")) {
Toast.makeText(MainActivity.this, "Please input some text...", Toast.LENGTH_SHORT).show();
} else {
//add message to list
ChatBubble ChatBubble = new ChatBubble(editText.getText().toString(), myMessage, timestamp.toString() );
ChatBubbles.add(ChatBubble);
adapter.notifyDataSetChanged();
editText.setText("");
if (myMessage) {
myMessage = false;
} else {
myMessage = true;
}
}
}
});
}
}
But I have a error in :
ChatBubble ChatBubble = new ChatBubble(editText.getText().toString(), myMessage, timestamp.toString() );
Here mi Adapter code:
public class MessageAdapter extends ArrayAdapter<ChatBubble> {
private Activity activity;
private List<ChatBubble> messages;
private String dateTime;
private SimpleDateFormat simpleDateFormat ;
public MessageAdapter(Activity context, int resource, List<ChatBubble> objects) {
super(context, resource, objects);
this.activity = context;
this.messages = objects;
String isoDatePattern = "dd/MM/yyyy HH:mm";
simpleDateFormat = new SimpleDateFormat(isoDatePattern);
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder;
LayoutInflater inflater = (LayoutInflater) activity.getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
int layoutResource = 0; // determined by view type
ChatBubble ChatBubble = getItem(position);
int viewType = getItemViewType(position);
if (ChatBubble.myMessage()) {
layoutResource = R.layout.tx_chat_bubble;
} else {
layoutResource = R.layout.rx_chat_bubble;
}
if (convertView != null) {
holder = (ViewHolder) convertView.getTag();
} else {
convertView = inflater.inflate(layoutResource, parent, false);
holder = new ViewHolder(convertView);
convertView.setTag(holder);
}
//set message content
holder.msg.setText(ChatBubble.getContent());
holder.dateTimeTx.setText(ChatBubble.getTimestamp());
return convertView;
}
#Override
public int getViewTypeCount() {
return 2;
}
#Override
public int getItemViewType(int position) {
return position % 2;
}
private class ViewHolder {
private TextView msg;
private TextView dateTimeTx;
public ViewHolder(View v) {
msg = (TextView) v.findViewById(R.id.txt_msg);
dateTimeTx = (TextView) v.findViewById(R.id.time_msg);
}
}
private String readFechaActual(long timestamp){
return simpleDateFormat.format(new Date(timestamp));
}
}
But I have another error in:
holder.dateTimeTx.setText(ChatBubble.getTimestamp());
Here is the ChatBubble class:
public class ChatBubble {
private String content;
private boolean myMessage;
private long timestamp;
public ChatBubble(String content, boolean myMessage, long timestamp) {
this.content = content;
this.myMessage = myMessage;
this.timestamp = timestamp;
}
public String getContent() {
return content;
}
public boolean myMessage() {
return myMessage;
}
public long getTimestamp() {
return timestamp;
}
}

Create single (to avoid unused resource requirements) SimpleDateFormat in an adapter constructor:
private SimpleDateFormat simpleDateFormat ;
public MessageAdapter(Activity context, int resource, List<ChatBubble> objects) {
super(context, resource, objects);
this.activity = context;
this.messages = objects;
String isoDatePattern = "dd/MM/yyyy HH:mm";
simpleDateFormat = new SimpleDateFormat(isoDatePattern);
}
Update the helper method to return formatted date string:
private String readFechaActual(long timestamp){
return simpleDateFormat.format(new Date(timestamp));
}
}
Use it in getView:
//set message content
holder.msg.setText(ChatBubble.getContent());
holder.dateTimeTx.setText("" + ChatBubble.getTimestamp()); // <--- ADD HERE
The adapter only connects View and Model, but actual data keeps in model, so you should change the BubbleChat class and add timestamp field:
public class ChatBubble {
private String content;
private boolean myMessage;
private long timestamp;
public ChatBubble(String content, boolean myMessage, long timestamp) {
this.content = content;
this.myMessage = myMessage;
this.timestamp = timestamp;
}
public String getContent() {
return content;
}
public boolean myMessage() {
return myMessage;
}
public long getTimestamp() {
return timestamp;
}
}

You should set the time in getView, same way you set the bubble's message.
You already have the field in the ViewHolder.
Also, ChatBubble ChatBubble = getItem(position); should be ChatBubble chatBubble = getItem(position);
And please use RecyclerView

Create a model
public class TimeDifference {
int years;
int months;
int days;
int hours;
int minutes;
int seconds;
String differenceString;
public TimeDifference(Context mContext, Date curdate, Date olddate) {
String y = " "+mContext.getString(R.string.year);
String ys = " "+mContext.getString(R.string.years);
String m = " "+mContext.getString(R.string.month);
String ms = " "+mContext.getString(R.string.months);
String d = " "+mContext.getString(R.string.day);
String ds = " "+mContext.getString(R.string.days);
String h = " "+mContext.getString(R.string.hour);
String hs = " "+mContext.getString(R.string.hours);
String mm = " "+mContext.getString(R.string.minute);
String mms= " "+mContext.getString(R.string.minutes);
String s = " "+mContext.getString(R.string.second);
String ss = " "+mContext.getString(R.string.seconds);
String a = " "+mContext.getString(R.string.ago);
float diff=curdate.getTime() - olddate.getTime();
if (diff >= 0) {
int yearDiff = Math.round( ( diff/ (365l*2592000000f))>=1?( diff/ (365l*2592000000f)):0);
if (yearDiff > 0) {
years = yearDiff;
setDifferenceString(years + (years == 1 ? y : ys) + a);
} else {
int monthDiff = Math.round((diff / 2592000000f)>=1?(diff / 2592000000f):0);
if (monthDiff > 0) {
if (monthDiff > 11)
monthDiff = 11;
months = monthDiff;
setDifferenceString(months + (months == 1 ? m : ms) + a);
} else {
int dayDiff = Math.round((diff / (86400000f))>=1?(diff / (86400000f)):0);
if (dayDiff > 0) {
days = dayDiff;
if(days==30)
days=29;
setDifferenceString(days + (days == 1 ? d : ds) + a);
} else {
int hourDiff = Math.round((diff / (3600000f))>=1?(diff / (3600000f)):0);
if (hourDiff > 0) {
hours = hourDiff;
setDifferenceString( hours + (hours == 1 ? h : hs) + a);
} else {
int minuteDiff = Math.round((diff / (60000f))>=1?(diff / (60000f)):0);
if (minuteDiff > 0) {
minutes = minuteDiff;
setDifferenceString(minutes + (minutes == 1 ? mm : mms) + a);
} else {
int secondDiff =Math.round((diff / (1000f))>=1?(diff / (1000f)):0);
if (secondDiff > 0)
seconds = secondDiff;
else
seconds = 1;
setDifferenceString(seconds + (seconds == 1 ? s : ss) + a);
}
}
}
}
}
}
}
public String getDifferenceString() {
return differenceString;
}
public void setDifferenceString(String differenceString) {
this.differenceString = differenceString;
}
public int getYears() {
return years;
}
public void setYears(int years) {
this.years = years;
}
public int getMonths() {
return months;
}
public void setMonths(int months) {
this.months = months;
}
public int getDays() {
return days;
}
public void setDays(int days) {
this.days = days;
}
public int getHours() {
return hours;
}
public void setHours(int hours) {
this.hours = hours;
}
public int getMinutes() {
return minutes;
}
public void setMinutes(int minutes) {
this.minutes = minutes;
}
public int getSeconds() {
return seconds;
}
public void setSeconds(int seconds) {
this.seconds = seconds;
}
}
Create Utils.java and add this
public static Date getDefaultDate(){
SimpleDateFormat f = new SimpleDateFormat("dd-MM-yyyy HH:mm:ss");
SimpleDateFormat dateFormatter = new SimpleDateFormat("dd-MM-yyyy HH:mm:ss");
f.setTimeZone(TimeZone.getDefault());
Date nowDate = new Date();
try {
nowDate = dateFormatter.parse(f.format(new Date()));
}catch (ParseException e){
e.printStackTrace();
}
return nowDate;
}
public static Date newDate(String timeStamp){
Date OurDate = null;
try{
SimpleDateFormat formatter = new SimpleDateFormat("dd-MM-yyyy HH:mm:ss");
formatter.setTimeZone(TimeZone.getTimeZone("UTC"));
Date value = formatter.parse(timeStamp);
SimpleDateFormat dateFormatter = new SimpleDateFormat("dd-MM-yyyy HH:mm:ss");
dateFormatter.setTimeZone(TimeZone.getDefault());
String n = dateFormatter.format(value);
OurDate = dateFormatter.parse(n);
}catch (ParseException e){
e.printStackTrace();
}
return OurDate;
}
For pass date into Adapter
TimeDifference now = new TimeDifference(mContext,Utils.getDefaultDate(),Utils.newDate("Your current time");
Toast.makeText(context, "Posted by "+now.getDifferenceString(), Toast.LENGTH_SHORT).show();

How to display image from storage to cardview?

i Was try to display image to card view but it not working and do not show error. Anyone help me please. I am new android. i checked file exists from downloaded folder: /storage/emulated/0/hismart/hinhmon
public class Album {
private String name;
private String gia;
private String thumbnail;
private String url;
public Album() {
}
public Album(String name, String gias, String thumbnail, String url) {
this.name = name;
this.gia = gias;
this.thumbnail = thumbnail;
this.url = url;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getGia() {
return gia;
}
public void setGia(String gia) {
this.gia = gia;
}
public String getThumbnail() {
return thumbnail;
}
public void setThumbnail(String thumbnail) {
this.thumbnail = thumbnail;
}
public String getUrl() {
return url;
}
public void setUrl(String url) {
this.url = url;
}
}
Creat and add data to ArrayList:
List<String> ArrTenmon = new ArrayList<String>();
List<String> ArrGia = new ArrayList<String>();
List<String> ArrImgLocal = new ArrayList<String>();
List<String> ArrImgUrl = new ArrayList<String>();
and add
} Cursor c = db.getdata("select * from tbl_mon_app");
int count = c.getCount();
for (int i = 0; i < count; i++) {
new DownloadFile().execute(ArrImgUrl.get(i));
if (!fileloc.exists()) {
fileloc.mkdirs();
}
Album a = new Album(ArrTenmon.get(i), ArrGia.get(i), ArrImgLocal.get(i), ArrImgUrl.get(i));
albumList.add(a);
adapter.notifyDataSetChanged();
}
and in adapter:
String folder_main = "hismart/hinhmon";
File fileloc = new File(Environment.getExternalStorageDirectory(), folder_main);
public class MyViewHolder extends RecyclerView.ViewHolder {
public TextView title, count;
public ImageView thumbnail, overflow;
public MyViewHolder(View view) {
super(view);
title = (TextView) view.findViewById(R.id.title);
count = (TextView) view.findViewById(R.id.count);
thumbnail = (ImageView) view.findViewById(R.id.thumbnail);
overflow = (ImageView) view.findViewById(R.id.overflow);
}
}
public AlbumsAdapter(Context mContext, List<Album> albumList) {
this.mContext = mContext;
this.albumList = albumList;
}
#Override
public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View itemView = LayoutInflater.from(parent.getContext())
.inflate(R.layout.album_card, parent, false);
return new MyViewHolder(itemView);
}
#Override
public void onBindViewHolder(final MyViewHolder holder, final int position) {
Album album = albumList.get(position);
holder.title.setText(album.getName());
holder.count.setText(album.getGia() + " vnđ");
File imgFile = new File(fileloc+"/"+ "album" + position);
Glide.with(mContext).load(imgFile).into(holder.thumbnail);
}
#Override
public int getItemCount() {
return albumList.size();
}
And Problem in bellow can not display image, name of image is: album1, alubm2...
File imgFile = new File(fileloc+"/"+ "album" + position);
Glide.with(mContext).load(imgFile).into(holder.thumbnail);
Download file:
class DownloadFile extends AsyncTask<String, Integer, String> {
ProgressDialog mProgressDialog = new ProgressDialog(BookActivity.this);// Change Mainactivity.this with your activity name.
String strFolderName;
#Override
protected void onPreExecute() {
super.onPreExecute();
}
#Override
protected String doInBackground(String... aurl) {
int count;
String targetFileName = null;
try {
URL url = new URL((String) aurl[0]);
URLConnection conexion = url.openConnection();
conexion.connect();
targetFileName = aurl[0].substring(aurl[0].lastIndexOf("/") + 1);
int lenghtOfFile = conexion.getContentLength();
String PATH = Environment.getExternalStorageDirectory() + "/hismart/hinhmon/";
File folder = new File(PATH);
if (!folder.exists()) {
folder.mkdir();//If there is no folder it will be created.
}
InputStream input = new BufferedInputStream(url.openStream());
OutputStream output = new FileOutputStream(PATH + targetFileName);
byte data[] = new byte[1024];
long total = 0;
while ((count = input.read(data)) != -1) {
total += count;
publishProgress((int) (total * 100 / lenghtOfFile));
output.write(data, 0, count);
}
output.flush();
output.close();
input.close();
} catch (Exception e) {
}
return targetFileName;
}
protected void onProgressUpdate(Integer... progress) {
mProgressDialog.setProgress(progress[0]);
if (mProgressDialog.getProgress() == mProgressDialog.getMax()) {
mProgressDialog.dismiss();
}
}
protected void onPostExecute(String result) {
}
}
call asyntask to download file
Cursor c = db.getdata("select * from tbl_mon_app");
int count = c.getCount();
for (int i = 0; i < count; i++) {
new DownloadFile().execute(ArrImgLocal.get(i));
if (!fileloc.exists()) {
fileloc.mkdirs();
}
}
Logcat: Show nothing error
Result like this:image after run

I am sure Glide code which you used will works, i have used it many project. There might be problem in your image file. Cross check all the points Sd card permissions, file path use are getting correct
if not worked try to convert file to Uri, it may help
File imgFile = new File(fileloc+"/"+ "album" + position);
Uri imageUri = Uri.fromFile(file);
Glide.with(this).load(imageUri).into(imgView);

Items not displaying orderwise in Recycler View

In my Recycler View not displaying the item orderwise routinely changing the items for each and every time while running the program.
How to display Order wise the items in Recycler View.
Code:
final CustomLinearLayoutManagercartpage layoutManager = new CustomLinearLayoutManagercartpage(CartItems.this, LinearLayoutManager.VERTICAL, false);
recyleitems.setHasFixedSize(false);
recyleitems.setLayoutManager(layoutManager);
cartadapter = new CartlistAdapter(cart, CartItems.this);
Log.i(String.valueOf(cartadapter), "cartadapter");
recyleitems.setAdapter(cartadapter);
recyleitems.setNestedScrollingEnabled(false);
myView.setVisibility(View.GONE);
cartadapter.notifyDataSetChanged();
Adapter:
public class CartlistAdapter extends RecyclerView.Adapter < CartlistAdapter.ViewHolder > {
private ArrayList < CartItemoriginal > cartlistadp;
private ArrayList < Cartitemoringinaltwo > cartlistadp2;
DisplayImageOptions options;
private Context context;
public static final String MyPREFERENCES = "MyPrefs";
public static final String MYCARTPREFERENCE = "CartPrefs";
public static final String MyCartQtyPreference = "Cartatyid";
SharedPreferences.Editor editor;
SharedPreferences shared,
wishshared;
SharedPreferences.Editor editors;
String pos,
qtyDelete;
String date;
String currentDateandTime;
private static final int VIEW_TYPE_ONE = 1;
private static final int VIEW_TYPE_TWO = 2;
private static final int TYPE_HEADER = 0;
private Double orderTotal = 0.00;
DecimalFormat df = new DecimalFormat("0");
Double extPrice;
View layout,
layouts;
SharedPreferences sharedPreferences;
SharedPreferences.Editor QutId;
boolean flag = false;
public CartlistAdapter() {
}
public CartlistAdapter(ArrayList < CartItemoriginal > cartlistadp, Context context) {
this.cartlistadp = cartlistadp;
this.cartlistadp2 = cartlistadp2;
this.context = context;
options = new DisplayImageOptions.Builder().cacheOnDisk(true).cacheInMemory(true).showImageOnLoading(R.drawable.b2)
.showImageForEmptyUri(R.drawable.b2).build();
if (YelloPage.imageLoader.isInited()) {
YelloPage.imageLoader.destroy();
}
YelloPage.imageLoader.init(ImageLoaderConfiguration.createDefault(context));
}
public int getItemViewType(int position) {
if (cartlistadp.size() == 0) {
Toast.makeText(context, String.valueOf(cartlistadp), Toast.LENGTH_LONG).show();
return VIEW_TYPE_TWO;
}
return VIEW_TYPE_ONE;
}
#Override
public CartlistAdapter.ViewHolder onCreateViewHolder(ViewGroup viewGroup, int position) {
ViewHolder viewHolder = null;
switch (position) {
case VIEW_TYPE_TWO:
View view2 = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.activity_cart, viewGroup, false);
viewHolder = new ViewHolder(view2, new MyTextWatcher(viewGroup, position));
// return view holder for your placeholder
break;
case VIEW_TYPE_ONE:
View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.cartitemrow, viewGroup, false);
viewHolder = new ViewHolder(view, new MyTextWatcher(view, position));
// return view holder for your normal list item
break;
}
return viewHolder;
}
#Override
public void onBindViewHolder(CartlistAdapter.ViewHolder viewHolder, int position) {
viewHolder.productnames.setText(cartlistadp.get(position).getProductname());
viewHolder.cartalisname.setText(cartlistadp.get(position).getAliasname());
viewHolder.cartprice.setText("Rs" + " " + cartlistadp.get(position).getPrice());
viewHolder.cartdelivery.setText(cartlistadp.get(position).getDelivery());
viewHolder.cartshippin.setText(cartlistadp.get(position).getShippincharge());
viewHolder.cartsellername.setText(cartlistadp.get(position).getSellername());
viewHolder.Error.setText(cartlistadp.get(position).getError());
viewHolder.qty.setTag(cartlistadp.get(position));
viewHolder.myTextWatcher.updatePosition(position);
if (cartlistadp.get(position).getQty() != 0) {
viewHolder.qty.setText(String.valueOf(cartlistadp.get(position).getQty()));
viewHolder.itemView.setTag(viewHolder);
} else {
viewHolder.qty.setText("0");
}
YelloPage.imageLoader.displayImage(cartlistadp.get(position).getProductimg(), viewHolder.cartitemimg, options);
}
#Override
public int getItemCount() {
return cartlistadp.size();
}
public long getItemId(int position) {
return position;
}
public Object getItem(int position) {
return cartlistadp.get(position);
}
public class ViewHolder extends RecyclerView.ViewHolder {
private TextView productnames, cartalisname, cartprice, cartdelivery, cartshippin, cartsellername, Error, total;
private ImageView cartitemimg;
private ImageButton wishbtn, removebtn;
private LinearLayout removecart, movewishlist;
private CardView cd;
private EditText qty;
private ImageView WishImg;
public MyTextWatcher myTextWatcher;
public ViewHolder(final View view, MyTextWatcher myTextWatcher) {
super(view);
productnames = (TextView) view.findViewById(R.id.cartitemname);
cartalisname = (TextView) view.findViewById(R.id.cartalias);
cartprice = (TextView) view.findViewById(R.id.CartAmt);
cartdelivery = (TextView) view.findViewById(R.id.cartdel);
cartshippin = (TextView) view.findViewById(R.id.shippingcrg);
cartsellername = (TextView) view.findViewById(R.id.cartSellerName);
cartitemimg = (ImageView) view.findViewById(R.id.cartimg);
Error = (TextView) view.findViewById(R.id.error);
this.myTextWatcher = myTextWatcher;
removecart = (LinearLayout) view.findViewById(R.id.removecart);
movewishlist = (LinearLayout) view.findViewById(R.id.movewishlist);
WishImg = (ImageView) view.findViewById(R.id.wishimg);
qty = (EditText) view.findViewById(R.id.quantity);
qty.addTextChangedListener(myTextWatcher);
String pid, qid;
sharedPreferences = view.getContext().getSharedPreferences(MYCARTPREFERENCE, Context.MODE_PRIVATE);
QutId = sharedPreferences.edit();
Log.d("Position checking1 ---", String.valueOf(getAdapterPosition()));
//MyTextWatcher textWatcher = new MyTextWatcher(view,qty);
// qty.addTextChangedListener(new MyTextWatcher(view,getAdapterPosition()));
//qty.addTextChangedListener(textWatcher);
qty.setOnKeyListener(new View.OnKeyListener() {
#Override
public boolean onKey(View v, int keyCode, KeyEvent event) {
qty.setSelection(qty.getText().length());
return false;
}
});
wishshared = view.getContext().getSharedPreferences(MyPREFERENCES, context.MODE_PRIVATE);
editors = view.getContext().getSharedPreferences(MyPREFERENCES, context.MODE_PRIVATE).edit();
shared = view.getContext().getSharedPreferences(MYCARTPREFERENCE, context.MODE_PRIVATE);
editor = view.getContext().getSharedPreferences(MYCARTPREFERENCE, context.MODE_PRIVATE).edit();
cd = (CardView) view.findViewById(R.id.cv);
productnames.setSingleLine(false);
productnames.setEllipsize(TextUtils.TruncateAt.END);
productnames.setMaxLines(2);
//totalPrice();
view.setClickable(true);
// view.setFocusableInTouchMode(true);
removecart.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if (cartlistadp.size() == 1) {
Intent list = new Intent(v.getContext(), Cart.class);
context.startActivity(list);
((Activity) context).finish();
removeAt(getAdapterPosition());
Log.i(String.valueOf(getPosition()), "item");
Toast.makeText(context, "All items deleted from your WishList", Toast.LENGTH_LONG).show();
} else {
removeAt(getAdapterPosition());
}
}
});
MovewishList();
totalPrice();
}
private void totalPrice() {
int price = 0;
for (int j = 0; j < cartlistadp.size(); j++) {
price += Integer.parseInt(cartlistadp.get(j).getPrice()) * (cartlistadp.get(j).getQty());
String totalprice = String.valueOf(price);
String count = String.valueOf(cartlistadp.size());
CartItems.Totalamt.setText(totalprice);
CartItems.cartcount.setText("(" + count + ")");
CartItems.carttotalcount.setText("(" + count + ")");
}
}
public void removeAt(int positions) {
JSONArray test = new JSONArray();
JSONArray test1 = new JSONArray();
JSONArray test2 = new JSONArray();
JSONArray item = null;
JSONArray itemsQty = null;
test1.put("0");
test2.put("0");
test.put(test1);
test.put(test2);
String channel = shared.getString(Constants.cartid, String.valueOf(test));
pos = cartlistadp.get(getAdapterPosition()).getProductid();
qtyDelete = String.valueOf(cartlistadp.get(getAdapterPosition()).getQty());
try {
JSONArray delteitems = new JSONArray(channel);
itemsQty = delteitems.getJSONArray(0);
item = delteitems.getJSONArray(1);
for (int x = 0; x < itemsQty.length(); x++) {
if (pos.equalsIgnoreCase(itemsQty.getString(x))) {
itemsQty.remove(x);
cartlistadp.remove(positions);
notifyItemRemoved(positions);
notifyItemRangeChanged(positions, cartlistadp.size());
notifyDataSetChanged();
}
}
for (int y = 0; y < item.length(); y++) {
if (qtyDelete.equalsIgnoreCase(item.getString(y)))
item.remove(y);
}
String s = String.valueOf(delteitems);
editor.putString(Constants.cartid, String.valueOf(delteitems));
editor.apply();
} catch (JSONException e) {
e.printStackTrace();
}
}
public void MovewishList() {
movewishlist.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
if (cartlistadp.size() == 1) {
pos = cartlistadp.get(getAdapterPosition()).getProductid();
JSONArray items3;
if (!flag) {
// wishlist.setBackgroundResource(R.drawable.wishnew);
flag = true;
String channel = wishshared.getString(Constants.productid, "['']");
JSONArray items;
String wishitem;
if (TextUtils.isEmpty(channel)) {
items = new JSONArray();
items.put(String.valueOf(pos));
wishitem = String.valueOf(items);
editors.putString(Constants.productid, wishitem);
editors.apply();
removeAt(getAdapterPosition());
Toast.makeText(context, "cartItems", Toast.LENGTH_LONG).show();
flag = false;
} else {
try {
Boolean found = false;
items = new JSONArray(channel);
for (int x = 0; x < items.length(); x++) {
if (pos.equalsIgnoreCase(items.getString(x))) {
found = true;
removeAt(getAdapterPosition());
Toast.makeText(context, "cartItems1", Toast.LENGTH_LONG).show();
}
}
if (!found) {
items.put(String.valueOf(pos));
wishitem = String.valueOf(items);
editors.putString(Constants.productid, wishitem);
removeAt(getAdapterPosition());
Toast.makeText(context, Constants.productid, Toast.LENGTH_LONG).show();
Log.i(Constants.productid, "wishitems");
}
editors.apply();
flag = false;
} catch (JSONException e) {
e.printStackTrace();
}
}
Intent list = new Intent(view.getContext(), Cart.class);
context.startActivity(list);
((Activity) context).finish();
} else {
removeAt(getAdapterPosition());
Intent list = new Intent(view.getContext(), Cart.class);
context.startActivity(list);
((Activity) context).finish();
}
} else {
pos = cartlistadp.get(getAdapterPosition()).getProductid();
if (!flag) {
// wishlist.setBackgroundResource(R.drawable.wishnew);
flag = true;
String channel = wishshared.getString(Constants.productid, "['']");
JSONArray items;
String wishitem;
if (TextUtils.isEmpty(channel)) {
items = new JSONArray();
items.put(String.valueOf(pos));
wishitem = String.valueOf(items);
editors.putString(Constants.productid, wishitem);
editors.apply();
removeAt(getAdapterPosition());
Toast.makeText(context, "cartItems", Toast.LENGTH_LONG).show();
flag = false;
} else {
try {
Boolean found = false;
items = new JSONArray(channel);
for (int x = 0; x < items.length(); x++) {
if (pos.equalsIgnoreCase(items.getString(x))) {
found = true;
removeAt(getAdapterPosition());
}
}
if (!found) {
items.put(String.valueOf(pos));
wishitem = String.valueOf(items);
editors.putString(Constants.productid, wishitem);
removeAt(getAdapterPosition());
Log.i(Constants.productid, "wishitems");
}
editors.apply();
flag = false;
} catch (JSONException e) {
e.printStackTrace();
}
}
} else {
removeAt(getAdapterPosition());
}
}
}
});
}
}
public class InputFilterMinMax implements InputFilter {
private int min, max;
public InputFilterMinMax(int min, int max) {
this.min = min;
this.max = max;
}
public InputFilterMinMax(String min, String max) {
this.min = Integer.parseInt(min);
this.max = Integer.parseInt(max);
}
#Override
public CharSequence filter(CharSequence source, int start, int end, Spanned dest, int dstart, int dend) {
try {
int input = Integer.parseInt(dest.toString() + source.toString());
if (isInRange(min, max, input))
return null;
} catch (NumberFormatException nfe) {}
return "";
}
private boolean isInRange(int a, int b, int c) {
return b > a ? c >= a && c <= b : c >= b && c <= a;
}
}
private class MyTextWatcher implements TextWatcher {
private View view;
private EditText editText;
private int position;
//private int position;
private MyTextWatcher(View view, int position) {
this.view = view;
this.position = position;
// this.position = adapterPosition;
// cartlistadp.get(position).getQty() = Integer.parseInt((Caption.getText().toString()));
}
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
//do nothing
}
public void onTextChanged(CharSequence s, int start, int before, int count) {
// EditText qtyView = (EditText) view.findViewById(R.id.quantity);
Log.i("editextpostion", String.valueOf(position));
}
public void afterTextChanged(Editable s) {
DecimalFormat df = new DecimalFormat("0");
String qtyString = s.toString();
int quantity = qtyString.equals("") ? 0 : Integer.valueOf(qtyString);
String quty = String.valueOf(quantity);
EditText qtyView = (EditText) view.findViewById(R.id.quantity);
CartItemoriginal product = (CartItemoriginal) qtyView.getTag();
// int position = (int) view.qtyView.getTag();
Log.d("postion is qtytag", "Position is: " + product);
qtyView.setFilters(new InputFilter[] {
new InputFilterMinMax(product.getMinquantity(), product.getMaxquantity())
});
if (product.getQty() != quantity) {
Double currPrice = product.getExt();
Double price = Double.parseDouble(product.getPrice());
int maxaty = Integer.parseInt(product.getMaxquantity());
int minqty = Integer.parseInt(product.getMinquantity());
if (quantity < maxaty) {
extPrice = quantity * price;
} else {
Toast.makeText(context, "Sorry" + " " + " " + "we are shipping only" + " " + " " + maxaty + " " + " " + "unit of quantity", Toast.LENGTH_LONG).show();
}
Double priceDiff = Double.valueOf(df.format(extPrice - currPrice));
product.setQty(quantity);
product.setExt(extPrice);
TextView ext = (TextView) view.findViewById(R.id.CartAmt);
if (product.getQty() != 0) {
ext.setText("Rs." + " " + df.format(product.getExt()));
} else {
ext.setText("0");
}
if (product.getQty() != 0) {
qtyView.setText(String.valueOf(product.getQty()));
} else {
qtyView.setText("");
}
JSONArray test = new JSONArray();
JSONArray test1 = new JSONArray();
JSONArray test2 = new JSONArray();
JSONArray items = null;
JSONArray itemsQty = null;
test1.put("0");
test2.put("0");
test.put(test1);
test.put(test2);
JSONArray listitems = null;
//String Sharedqty= String.valueOf(cartlistadp.get(getAdapterPosition()).getQty());
String channel = (shared.getString(Constants.cartid, String.valueOf(test)));
try {
listitems = new JSONArray(channel);
itemsQty = listitems.getJSONArray(1);
} catch (JSONException e) {
e.printStackTrace();
}
try {
if (itemsQty != null) {
itemsQty.put(position + 1, qtyString);
}
} catch (JSONException e) {
e.printStackTrace();
}
try {
if (listitems != null) {
listitems.put(1, itemsQty);
}
} catch (JSONException e) {
e.printStackTrace();
}
QutId.putString(Constants.cartid, String.valueOf(listitems));
QutId.apply();
Toast.makeText(context, String.valueOf(listitems), Toast.LENGTH_SHORT).show();
totalPrice();
}
return;
}
private void totalPrice() {
int price = 0;
for (int j = 0; j < cartlistadp.size(); j++) {
price += Integer.parseInt(cartlistadp.get(j).getPrice()) * (cartlistadp.get(j).getQty());
String totalprice = String.valueOf(price);
String count = String.valueOf(cartlistadp.size());
CartItems.Totalamt.setText(totalprice);
CartItems.cartcount.setText("(" + count + ")");
CartItems.carttotalcount.setText("(" + count + ")");
}
}
public void updatePosition(int position) {
this.position = position;
}
}
}
Thanks in Advance.

For sorting you need to Collection.sort method of Java and also you need to implement comparable interface for define your comparison.
CartItemoriginal implements Comparable {
public int compareTo(Object obj) { } }
Updated
public class CartItemoriginal implements Comparable<CartItemoriginal > {
private Float val;
private String id;
public CartItemoriginal (Float val, String id){
this.val = val;
this.id = id;
}
#Override
public int compareTo(ToSort f) {
if (val.floatValue() > f.val.floatValue()) {
return 1;
}
else if (val.floatValue() < f.val.floatValue()) {
return -1;
}
else {
return 0;
}
}
#Override
public String toString(){
return this.id;
}
}
and use
Collections.sort(sortList);

How do I use onResume and onPause method when I am pressed back button

I have a custom adapter for recyclerview using json webservices. I had to parse the url one by one and show cardview using onscrolllistener(). My question is when I pressed the back button and after I open in recent app (that time onResume called) it will show only which url called at the time of onPause called. So how can I refresh the listview when I call onResume.
Thanks in Advance,
Here my code synepet..
public class MainActivity extends AppCompatActivity {
private RecyclerView mRecyclerView;
private RecyclerView.Adapter mAdapter;
private GridLayoutManager mGridManager;
private ProgressBar mProgressBar;
private static String url = "https://www.googleapis.com/youtube/v3/playlists?part=snippet&channelId=UCGyZswzm4G-wEfRQHgMSAuw&maxResults=50&key=AIzaSyCi0ApXYk08YpzyEO8jYJanaud-Epti6ks&pageToken=CDIQAQ";
JSONArray contacts = null;
private String mNextToken;
JSONObject jsonObj;
private boolean loading = true;
int visibleItemCount, totalItemCount, pastVisiblesItems;
private List<PlayListItem> mContactList = new ArrayList<PlayListItem>();
private PlayListItem mContact;
private Bundle mbundle;
String name2 = "Arasu";
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
mProgressBar = (ProgressBar) findViewById(R.id.progressBar);
mRecyclerView = (RecyclerView) findViewById(R.id.recycler_view);
mRecyclerView.setHasFixedSize(true);
// Calling async task to get json
new GetContacts().execute();
mAdapter = new CardAdapter(MainActivity.this, mContactList);
mRecyclerView.setAdapter(mAdapter);
getScreenOrientation();
}
#Override
public void onResume() {
super.onResume();
}
#Override
protected void onPause() {
super.onPause();
System.out.println("Size2---->" + mContactList.size());
}
private class GetContacts extends AsyncTask<Void, Void, Void> {
#Override
protected void onPreExecute() {
super.onPreExecute();
// Showing progress dialog
mProgressBar.setVisibility(View.VISIBLE);
mProgressBar.setMax(100);
}
#Override
protected Void doInBackground(Void... arg0) {
// Creating service handler class instance
ServiceHandler sh = new ServiceHandler();
// Making a request to url and getting response
String jsonArray = sh.makeServiceCall(url, ServiceHandler.GET);
//Log.d("Response: ", "> " + jsonArray);
if (jsonArray != null) {
try {
jsonObj = new JSONObject(jsonArray);
if (jsonObj.has("nextPageToken")) {
loading = true;
mNextToken = jsonObj.getString("nextPageToken");
} else {
loading = false;
}
// Getting JSON Array node
contacts = jsonObj.getJSONArray("items");
// looping through All Contacts
for (int i = 0; i < contacts.length(); i++) {
JSONObject c = contacts.getJSONObject(i);
String title = c.getJSONObject("snippet").getString("title");
String time = c.getJSONObject("snippet").getString("publishedAt");
String playlist_id = c.get("id").toString();
// Find Screen size and set the Image for this size
DisplayMetrics dm = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(dm);
double x = Math.pow(dm.widthPixels / dm.xdpi, 2);
double y = Math.pow(dm.heightPixels / dm.ydpi, 2);
double screenInches = Math.sqrt(x + y);
int inch = (int) Math.round(screenInches);
String image = null;
try {
if (inch <= 4) {
image = c.getJSONObject("snippet").getJSONObject("thumbnails").getJSONObject("medium").getString("url");
} else if (inch > 4 && inch <= 6) {
image = c.getJSONObject("snippet").getJSONObject("thumbnails").getJSONObject("medium").getString("url");
} else if (inch > 6 && inch <= 10) {
image = c.getJSONObject("snippet").getJSONObject("thumbnails").getJSONObject("medium").getString("url");
} else {
image = c.getJSONObject("snippet").getJSONObject("thumbnails").getJSONObject("default").getString("url");
}
} catch (IndexOutOfBoundsException e) {
e.printStackTrace();
}
mContact = new PlayListItem();
mContact.setmTitle(title);
mContact.setmID(playlist_id);
mContact.setmTime(time);
mContact.setmThumbnailURL(image);
mContact.setmNextToken(mNextToken);
mContactList.add(mContact);
}
} catch (JSONException e) {
e.printStackTrace();
}
} else {
Log.e("ServiceHandler", "Couldn't get any data from the url");
}
return null;
}
#Override
protected void onPostExecute(Void result) {
super.onPostExecute(result);
// Dismiss the progress dialog
if (mProgressBar.isShown())
mProgressBar.setVisibility(ProgressBar.GONE);
mAdapter.notifyDataSetChanged();
mRecyclerView.setOnScrollListener(new RecyclerView.OnScrollListener() {
#Override
public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
super.onScrolled(recyclerView, dx, dy);
visibleItemCount = mGridManager.getChildCount();
totalItemCount = mGridManager.getItemCount();
pastVisiblesItems = mGridManager.findFirstVisibleItemPosition();
if (loading) {
if ((visibleItemCount + pastVisiblesItems) >= totalItemCount) {
Log.v("...", "Last Item Wow !");
if (jsonObj.has("nextPageToken")) {
url = "https://www.googleapis.com/youtube/v3/playlists?part=snippet&channelId=UCGyZswzm4G-wEfRQHgMSAuw&maxResults=50&key=AIzaSyCi0ApXYk08YpzyEO8jYJanaud-Epti6ks&pageToken=" + mNextToken;
System.out.println("url--->" + url);
new GetContacts().execute();
} else {
url = "https://www.googleapis.com/youtube/v3/playlists?part=snippet&channelId=UCGyZswzm4G-wEfRQHgMSAuw&maxResults=50&key=AIzaSyCi0ApXYk08YpzyEO8jYJanaud-Epti6ks&pageToken=" + mNextToken;
System.out.println("url----else--->" + url);
new GetContacts().execute();
}
loading = false;
}
}
}
});
}
}
}
public class CardAdapter extends RecyclerView.Adapter<CardAdapter.ViewHolder> {
private List<PlayListItem> mItems;
private Activity activity;
public ImageLoader imageLoader;
public CardAdapter(Activity activity, List<PlayListItem> items) {
this.activity = activity;
this.mItems = items;
imageLoader = new ImageLoader(activity.getApplicationContext());
}
#Override
public ViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
View v = LayoutInflater.from(viewGroup.getContext())
.inflate(R.layout.recycler_outer_playlist_cardview, viewGroup, false);
ViewHolder viewHolder = new ViewHolder(v);
return viewHolder;
}
#Override
public void onBindViewHolder(ViewHolder viewHolder, final int i) {
System.out.println("Title Value is----------->"+mItems.get(0));
PlayListItem nature = mItems.get(i);
Log.d("Title Value is","----------->"+nature.getmTitle());
viewHolder.tvTitle.setText(nature.getmTitle());
final String playListID = nature.getmID();
final String thumnailsURL = nature.getmThumbnailURL();
final Calendar c = Calendar.getInstance();
int cur_year = c.get(Calendar.YEAR);
int cur_month = c.get(Calendar.MONTH) + 1;
int cur_day = c.get(Calendar.DAY_OF_MONTH);
int cur_hour = c.get(Calendar.HOUR_OF_DAY);
int cur_minute = c.get(Calendar.MINUTE);
// Getting updated date from url
String string = nature.getmTime();
String[] parts = string.split("-");
String part1 = parts[0]; // 004
String part2 = parts[1]; // 034556
String part3 = parts[2];
String[] part4 = part3.split("T");
String part5 = part4[0];
String part6 = part4[1];
// Toast.makeText(activity, "Given Date is : " + part1 + "/" + part2 + "/" + part3, Toast.LENGTH_LONG).show();
// Log.d("Updated Current Day", part5);
int giv_yr = Integer.parseInt(part1);
int giv_mnt = Integer.parseInt(part2);
int giv_day = Integer.parseInt(part5);
// Difference Two dates
int day_yr = 0, day_mnt = 0, day_day = 0;
if (cur_year >= giv_yr) {
if (cur_year >= giv_yr) {
day_yr = cur_year - giv_yr;
} else {
day_yr = giv_yr - cur_year;
}
if (cur_month >= giv_mnt) {
day_mnt = cur_month - giv_mnt;
} else {
day_mnt = giv_mnt - cur_month;
}
if (cur_day >= giv_day) {
day_day = cur_day - giv_day;
} else {
day_day = giv_day - cur_day;
}
}
String yr = Integer.toString(day_yr);
String mnt = Integer.toString(day_mnt);
String days = Integer.toString(day_day);
if (day_day == 0)
viewHolder.tvTime.setText("Updated Today");
else if (day_day < 7)
viewHolder.tvTime.setText("Updated " + days + " Days ago");
else if (day_day < 30) {
int week = day_day / 7;
String Week = Integer.toString(week);
viewHolder.tvTime.setText("Updated " + Week + " Weeks ago");
} else {
viewHolder.tvTime.setText("Updated " + mnt + " Months ago");
}
//imageLoader.DisplayImage(nature.getmThumbnailURL(), viewHolder.imgThumbnail);
Picasso.with(activity)
.load(nature.getmThumbnailURL())
/*.placeholder(R.drawable.my_thumnail)*/
.into(viewHolder.imgThumbnail);
viewHolder.item_view.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent(activity, VideoPlayActivity.class);
intent.putExtra("PLAYLIST_ID", playListID);
intent.putExtra("THUMNAIL_URL", thumnailsURL);
v.getContext().startActivity(intent);
}
});
/*System.out.println("URL -------------->"+nature.getmThumbnailURL());
// String img_url = nature.getmThumbnailURL();
try {
URL url = new URL(nature.getmThumbnailURL());
Bitmap bmp = BitmapFactory.decodeStream(url.openConnection().getInputStream());
System.out.println("Image bmp -------------->"+bmp);
//imageView.setImageBitmap(bmp);
viewHolder.imgThumbnail.setImageBitmap(bmp);
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}*/
}
#Override
public int getItemCount() {
return mItems.size();
}
class ViewHolder extends RecyclerView.ViewHolder {
public ImageView imgThumbnail;
public TextView tvTitle;
public TextView tvID;
public TextView tvTime;
public View item_view;
public ViewHolder(View itemView) {
super(itemView);
imgThumbnail = (ImageView) itemView.findViewById(R.id.img_thumbnail);
tvTitle = (TextView) itemView.findViewById(R.id.tv_title);
//tvID = (TextView) itemView.findViewById(R.id.tv_id);
tvTime = (TextView) itemView.findViewById(R.id.tv_time);
item_view = itemView;
}
}
}

I made a small mistake declaring String URL as static but it should be final also assign to another String variable. Finally set the adapter and notifyDataSetChanged where placed in onStart().
private final static String URL = "https://www.googleapis.com/youtube/v3/playlists?part=snippet&channelId=UCGyZswzm4G-wEfRQHgMSAuw&maxResults=50&key=AIzaSyCi0ApXYk08YpzyEO8jYJanaud-Epti6ks&pageToken=CDIQAQ";
private String url = URL;
JSONArray contacts = null;
private String mNextToken;
JSONObject jsonObj;
private boolean loading = true;
int visibleItemCount, totalItemCount, pastVisiblesItems;
private List<PlayListItem> mContactList;
private PlayListItem mContact;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
mProgressBar = (ProgressBar) findViewById(R.id.progressBar);
mRecyclerView = (RecyclerView) findViewById(R.id.recycler_view);
mRecyclerView.setHasFixedSize(true);
// Calling async task to get json
if (mContactList == null)
mContactList = new ArrayList<PlayListItem>();
System.out.println("onCreate :: Size2---->" + mContactList.size());
}
#Override
protected void onStart() {
super.onStart();
if (mContactList != null)
mContactList.clear();
url = URL;
new GetContacts().execute();
if (mAdapter == null)
mAdapter = new CardAdapter(MainActivity.this, mContactList);
mRecyclerView.setAdapter(mAdapter);
mAdapter.notifyDataSetChanged();
getScreenOrientation();
System.out.println("onStart :: Size2---->" + mContactList.size());
}
#Override
protected void onResume() {
ActivitySwitcher.animationIn(findViewById(R.id.container_first),
getWindowManager());
super.onResume();
System.out.println("onResume :: Size2---->" + mContactList.size());
mAdapter.notifyDataSetChanged();
}

Getting only the last item data from hashmap arraylist

I have parsed json data in which there is a main json array and it contains sub json array. But the main json array not containing the sub json array in every item. So i have parsed all the data accroding to it. and i am getting perfect data from it. But the problem is that the main json array data is displaying in listview and after click on list view item the sub json array is display accroding to main json array item but its only get the last element of sub json array from hash map array list. So i can't get proper way to display so please find out some standard solution.
Here is My Code
public class MainCategories extends Fragment {
WebserviceClass wservice = new WebserviceClass();
Context c;
View v;
String data = "";
String User_id, countryid;
JSONObject jobj;
JSONArray datas;
int currentpage = 1;
ArrayList<HashMap<String, String>> dataList = new ArrayList<HashMap<String, String>>();
// testAdapter adapter
ArrayList<Allcategories> listing = new ArrayList<Allcategories>();;
public static ArrayList<subCateData> subList = new ArrayList<subCateData>();
int limit = 3, id;
Button bt1, bt2, bt3;
String img, img1;
String name, count;
String subname, subcount, subCategoryId;
View fragmentview;
ListView lv1, lv2, lv3;
JSONObject ca;
MainTest test;
String url, main, subnameData, subCountData, subID, cateGoryID;
LinearLayout ll;
ProgressDialog pDialog;
HashMap<String, String> map;
JSONArray dataa;
// SimpleAdapter adp;
Button b1, b2, b3;
public MainCategories(Context mainActivity, int id) {
// TODO Auto-generated constructor stub
this.c = mainActivity;
this.id = id;
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// TODO Auto-generated method stub
SharedPreferences sp = c.getSharedPreferences("key", 0);
User_id = sp.getString("userid=", User_id);
countryid = sp.getString("countryid", countryid);
v = inflater.inflate(R.layout.categories_tab, container, false);
lv2 = (ListView) v.findViewById(android.R.id.list);
if (FirstTab.adp == null) {
new CategoryTest().execute();
} else {
lv2.setAdapter(FirstTab.adp);
}
lv2.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
for (int i = 0; i < subList.size(); i++) {
subID = subList.get(i).getsubcatId();
subnameData = subList.get(i).getsubcatname();
subCountData = subList.get(i).getsubcatcount();
Log.v("ALLDATA", subnameData + "/" + "/" + "/"
+ subCountData);
}
String catid = listing.get(position).getCategoryid();
int mycatID = Integer.parseInt(catid);
Log.v("CAtegory ID", mycatID + "");
addfragment(new CategoriesListClick(c, subID, mycatID,
subnameData, subCountData, position), true,
FragmentTransaction.TRANSIT_FRAGMENT_OPEN);
}
});
return v;
}
public class CategoryTest extends AsyncTask<String, Integer, String> {
#Override
protected String doInBackground(String... params) {
// TODO Auto-generated method stub
url = String.format(Common.view_main_category + "country_id=%s",
countryid);
Log.v("CateGory URL:", url);
jobj = wservice.getjson(url);
return null;
}
#Override
protected void onPostExecute(String result) {
// TODO Auto-generated method stub
super.onPostExecute(result);
try {
JSONObject jdata = jobj.getJSONObject("data");
datas = jdata.getJSONArray("allcategories");
for (int i = 0; i < datas.length(); i++) {
Log.e("length", "" + datas.length());
ca = datas.getJSONObject(i);
cateGoryID = ca.getString("categoryid");
name = ca.getString("categoryname");
count = ca.getString("categorystorecount");
// map = new HashMap<String, String>();
// map.put("categoryname", name);
// map.put("categorystorecount", "(" + count + ")");
// String countc=c.getString("categoryid");
Log.e(name, count);
if (ca.has("subcategories")) {
dataa = ca.getJSONArray("subcategories");
for (int j = 0; j < dataa.length(); j++) {
JSONObject d = dataa.getJSONObject(j);
// subList = new ArrayList<subCateData>();
subCategoryId = d.getString("subcategoryid");
subname = d.getString("subcategoryname");
subcount = d.getString("subcategorystorecount");
// map.put("subcategoryid", subCategoryId);
// map.put("subcategoryname", subname);
// map.put("subcategorystorecount", "(" + subcount
// + ")");
subList.add(new subCateData(subCategoryId, subname,
subcount));
/*
* Log.v("This is Data for Sub:",
* map.get("subcategoryname").toString());
*/
}
} else {
System.out.println("JSONArray is null");
}
listing.add(new Allcategories(cateGoryID, name, count));
}
} catch (JSONException e) {
e.printStackTrace();
}
Log.v("Size", listing.size() + "");
FirstTab.adp = new MyCustom(c, listing);
lv2.setAdapter(FirstTab.adp);
}
}
void addfragment(Fragment fragment, boolean addBacktoStack, int transition) {
FragmentTransaction ft = getFragmentManager().beginTransaction();
ft.replace(R.id.simple_fragment, fragment);
ft.setTransition(transition);
if (addBacktoStack)
ft.addToBackStack(null);
ft.commit();
}
class MyCustom extends BaseAdapter {
Context Mcontext;
ArrayList<Allcategories> thisCatList;
LayoutInflater inflater;
public MyCustom(Context c, ArrayList<Allcategories> listing) {
// TODO Auto-generated constructor stub
this.Mcontext = c;
this.thisCatList = listing;
inflater = LayoutInflater.from(Mcontext);
}
#Override
public int getCount() {
// TODO Auto-generated method stub
return thisCatList.size();
}
#Override
public Object getItem(int arg0) {
// TODO Auto-generated method stub
return arg0;
}
#Override
public long getItemId(int arg0) {
// TODO Auto-generated method stub
return arg0;
}
#Override
public View getView(int position, View v, ViewGroup parent) {
if (v == null) {
v = inflater.inflate(R.layout.list_categories, parent, false);
TextView catName = (TextView) v.findViewById(R.id.txtcname);
TextView catCount = (TextView) v.findViewById(R.id.txtccount);
catName.setText(thisCatList.get(position).getCategoryname());
catCount.setText("(" + ""
+ thisCatList.get(position).getCategorystorecount()
+ "" + ")");
Log.v("CatCount", catCount.getText().toString());
}
// TODO Auto-generated method stub
return v;
}
}
class AllCategories Data:
public class Allcategories {
private String arabicname;
private String categoryid;
private String categoryname;
private String categorystorecount;
private String fatherid;
private String order;
private String status;
// private List subcategories;
public Allcategories(String name, String count) {
// TODO Auto-generated constructor stub
this.categoryname = name;
this.categorystorecount = count;
}
public String getCategoryname() {
return this.categoryname;
}
public void setCategoryname(String categoryname) {
this.categoryname = categoryname;
}
public String getCategorystorecount() {
return this.categorystorecount;
}
public void setCategorystorecount(String categorystorecount) {
this.categorystorecount = categorystorecount;
}
SubCategory Data Class:
public class subCateData {
String subcatId, subcategoryname, subcategorystorecount;
public subCateData(String id, String name, String count) {
// TODO Auto-generated constructor stub
this.subcatId = id;
this.subcategoryname = name;
this.subcategorystorecount = count;
}
public String getsubcatId() {
return this.subcatId;
}
public void setsubcatId(String subID) {
this.subcatId = subID;
}
public String getsubcatname() {
return this.subcategoryname;
}
public void setsubcatname(String name) {
this.subcategoryname = name;
}
public String getsubcatcount() {
return this.subcategorystorecount;
}
public void setsubcatcount(String count) {
this.subcategorystorecount = count;
}
This is My Json parsing URL:
http://www.sevenstarinfotech.com/projects/demo/okaz/API/view_categories.php?country_id=4
Stack Trace:
06-27 12:23:34.361: V/ALLDATA(8533): High School///0
06-27 12:24:02.001: I/Adreno200-EGLSUB(8533): <ConfigWindowMatch:2218>: Format RGBA_8888.
06-27 12:24:02.011: D/memalloc(8533): /dev/pmem: Mapped buffer base:0x53153000 size:1536000 offset:0 fd:74
06-27 12:24:02.041: D/memalloc(8533): /dev/pmem: Mapped buffer base:0x54048000 size:15683584 offset:14147584 fd:80
06-27 12:24:02.091: D/OpenGLRenderer(8533): Flushing caches (mode 0)
06-27 12:24:02.111: D/memalloc(8533): /dev/pmem: Unmapping buffer base:0x51b26000 size:3072000 offset:1536000
06-27 12:24:02.121: D/memalloc(8533): /dev/pmem: Unmapping buffer base:0x552a2000 size:9093120 offset:7557120
06-27 12:24:02.121: D/memalloc(8533): /dev/pmem: Unmapping buffer base:0x55b4e000 size:17219584 offset:15683584
06-27 12:24:03.081: D/CLIPBOARD(8533): Hide Clipboard dialog at Starting input: finished by someone else... !
06-27 12:24:03.141: D/OpenGLRenderer(8533): Flushing caches (mode 0)
06-27 12:24:03.141: D/memalloc(8533): /dev/pmem: Unmapping buffer base:0x53153000 size:1536000 offset:0
06-27 12:24:03.141: D/memalloc(8533): /dev/pmem: Unmapping buffer base:0x54048000 size:15683584 offset:14147584
06-27 12:24:03.441: D/OpenGLRenderer(8533): Flushing caches (mode 2)

you should have to put new HashMap inside your current HasHMap so you can get subcategories items for particular index.
see this for how to use nested HashMap? and use it in subcategories loop.
i am using ArrayList of getter setter class to bind the data. so if you can convert your code into arraylist and edit the question that will be a great..
and see below code
import java.util.ArrayList;
public class MainCategories extends Fragment {
WebserviceClass wservice = new WebserviceClass();
Context c;
View v;
String data = "";
String User_id, countryid;
JSONObject jobj;
JSONArray datas;
int currentpage = 1;
ArrayList<HashMap<String, String>> dataList = new ArrayList<HashMap<String, String>>();
// testAdapter adapter
ArrayList<Allcategories> listing = new ArrayList<Allcategories>();;
public static ArrayList<subCateData> subList = new ArrayList<subCateData>();
int limit = 3, id;
Button bt1, bt2, bt3;
String img, img1;
String name, count;
String subname, subcount, subCategoryId;
View fragmentview;
ListView lv1, lv2, lv3;
JSONObject ca;
MainTest test;
String url, main, subnameData, subCountData, subID, cateGoryID;
LinearLayout ll;
ProgressDialog pDialog;
HashMap<String, String> map;
JSONArray dataa;
// SimpleAdapter adp;
Button b1, b2, b3;
/// sanket
ArrayList<Allcategories> list = new ArrayList<Allcategories>();
public MainCategories(Context mainActivity, int id) {
// TODO Auto-generated constructor stub
this.c = mainActivity;
this.id = id;
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// TODO Auto-generated method stub
SharedPreferences sp = c.getSharedPreferences("key", 0);
User_id = sp.getString("userid=", User_id);
countryid = sp.getString("countryid", countryid);
v = inflater.inflate(R.layout.categories_tab, container, false);
lv2 = (ListView) v.findViewById(android.R.id.list);
if (FirstTab.adp == null) {
new CategoryTest().execute();
} else {
lv2.setAdapter(FirstTab.adp);
}
lv2.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
for (int i = 0; i < subList.size(); i++) {
subID = list.get(position).get(i).getList().getsubcatId();
subnameData = list.get(position).get(i).getList().getsubcatname();
subCountData = list.get(position).get(i).getList().getsubcatcount();
Log.v("ALLDATA", subnameData + "/" + "/" + "/"
+ subCountData);
}
String catid = listing.get(position).getCategoryid();
int mycatID = Integer.parseInt(catid);
Log.v("CAtegory ID", mycatID + "");
addfragment(new CategoriesListClick(c, subID, mycatID,
subnameData, subCountData, position), true,
FragmentTransaction.TRANSIT_FRAGMENT_OPEN);
}
});
return v;
}
public class CategoryTest extends AsyncTask<String, Integer, String> {
#Override
protected String doInBackground(String... params) {
// TODO Auto-generated method stub
url = String.format(Common.view_main_category + "country_id=%s",
countryid);
Log.v("CateGory URL:", url);
jobj = wservice.getjson(url);
return null;
}
#Override
protected void onPostExecute(String result) {
// TODO Auto-generated method stub
super.onPostExecute(result);
try {
JSONObject jdata = jobj.getJSONObject("data");
datas = jdata.getJSONArray("allcategories");
for (int i = 0; i < datas.length(); i++) {
// sanket
Allcategories binAll = new Allcategories();
Log.e("length", "" + datas.length());
ca = datas.getJSONObject(i);
cateGoryID = ca.getString("categoryid");
name = ca.getString("categoryname");
count = ca.getString("categorystorecount");
// map = new HashMap<String, String>();
// map.put("categoryname", name);
// map.put("categorystorecount", "(" + count + ")");
// String countc=c.getString("categoryid");
//sanket
binAll.setcategoryid(cateGoryID);
binAll.setcategoryname(name);
binAll.setcategorystorecount(count);
Log.e(name, count);
if (ca.has("subcategories")) {
dataa = ca.getJSONArray("subcategories");
for (int j = 0; j < dataa.length(); j++) {
JSONObject d = dataa.getJSONObject(j);
// subList = new ArrayList<subCateData>();
subCategoryId = d.getString("subcategoryid");
subname = d.getString("subcategoryname");
subcount = d.getString("subcategorystorecount");
// map.put("subcategoryid", subCategoryId);
// map.put("subcategoryname", subname);
// map.put("subcategorystorecount", "(" + subcount
// + ")");
//// sanket
ArrayList<subCateData> sublist = new ArrayList<subCateData>();
subCateData binSub = new subCateData();
binSub.setsubcatId(subCategoryId);
binSub.setsubcatname(subname);
binSub.setsubcatcount(subcount);
subList.add(new subCateData(subCategoryId, subname,
subcount));
/*
* Log.v("This is Data for Sub:",
* map.get("subcategoryname").toString());
*/
sublist.add(binSub);
}
/// sanket note : make arraylist of subdata in Allcategories class and generate getter and settter
binAll.setList(sublist);
} else {
System.out.println("JSONArray is null");
}
listing.add(new Allcategories(cateGoryID, name, count));
list.add(binAll);
}
} catch (JSONException e) {
e.printStackTrace();
}
Log.v("Size", listing.size() + "");
FirstTab.adp = new MyCustom(c, listing);
lv2.setAdapter(FirstTab.adp);
}
}
void addfragment(Fragment fragment, boolean addBacktoStack, int transition) {
FragmentTransaction ft = getFragmentManager().beginTransaction();
ft.replace(R.id.simple_fragment, fragment);
ft.setTransition(transition);
if (addBacktoStack)
ft.addToBackStack(null);
ft.commit();
}
class MyCustom extends BaseAdapter {
Context Mcontext;
ArrayList<Allcategories> thisCatList;
LayoutInflater inflater;
public MyCustom(Context c, ArrayList<Allcategories> listing) {
// TODO Auto-generated constructor stub
this.Mcontext = c;
this.thisCatList = listing;
inflater = LayoutInflater.from(Mcontext);
}
#Override
public int getCount() {
// TODO Auto-generated method stub
return thisCatList.size();
}
#Override
public Object getItem(int arg0) {
// TODO Auto-generated method stub
return arg0;
}
#Override
public long getItemId(int arg0) {
// TODO Auto-generated method stub
return arg0;
}
#Override
public View getView(int position, View v, ViewGroup parent) {
if (v == null) {
v = inflater.inflate(R.layout.list_categories, parent, false);
TextView catName = (TextView) v.findViewById(R.id.txtcname);
TextView catCount = (TextView) v.findViewById(R.id.txtccount);
catName.setText(thisCatList.get(position).getCategoryname());
catCount.setText("(" + ""
+ thisCatList.get(position).getCategorystorecount()
+ "" + ")");
Log.v("CatCount", catCount.getText().toString());
}
// TODO Auto-generated method stub
return v;
}
}

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