Develop Reference

How do I get the quantity from every item in cart and pass to an activity?

i have a cartactivity and cartadapter, in cartadapter i add increment and decrement for each stuff, and i sum it in total price and total weight and send it to activity ( it worked by passing textview activity from cartactivity to adapteractivity ) and now i want to get seperated quantity for each item to send to database with format Example if item is ( Wallet, Bag, Shoes ) then quanitity that will send to database like this ( 2, 3, 3) 2 represent for wallet and (,) for seperating item quantity, 3 represent bag, and 3 represent shoes. i don't know how to take each quantity and send it in a format like that
have a look on my adapter
import android.content.Context;
import android.content.Intent;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.RelativeLayout;
import android.widget.TextView;
import android.widget.ToggleButton;
import androidx.annotation.NonNull;
import androidx.localbroadcastmanager.content.LocalBroadcastManager;
import androidx.recyclerview.widget.RecyclerView;
import com.bumptech.glide.Glide;
import com.cepheuen.elegantnumberbutton.view.ElegantNumberButton;
import java.text.NumberFormat;
import java.util.ArrayList;
import java.util.Currency;
import java.util.List;
import java.util.Locale;
import java.util.Objects;
import java.util.concurrent.atomic.AtomicReference;
import app.gify.co.id.R;
import app.gify.co.id.activity.List_Kado;
import app.gify.co.id.modal.MadolCart;
public class AdapterCart extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
ArrayList<MadolCart> carts;
MadolCart mm;
View view;
View viewku;
Context context;
int kuantitas;
String totalname;
int totalBerat, totalharga;
TextView totalhargas, totalberats;
public AdapterCart(ArrayList<MadolCart> carts, Context context, TextView totalhargas, TextView totalberats) {
this.carts = carts;
this.context = context;
this.totalhargas = totalhargas;
this.totalberats = totalberats;
}
public class MyCart extends RecyclerView.ViewHolder {
public ImageView gambar, tambah, kurang;
public TextView harga, nama, quantitas;
public RelativeLayout background, foreground;
public ElegantNumberButton quantity;
public MyCart(#NonNull View itemView) {
super(itemView);
gambar = itemView.findViewById(R.id.gambarcart);
tambah = itemView.findViewById(R.id.tambahcart);
kurang = itemView.findViewById(R.id.kurangcart);
harga = itemView.findViewById(R.id.hargacart);
nama = itemView.findViewById(R.id.namacart);
quantitas = itemView.findViewById(R.id.quantitas);
background = itemView.findViewById(R.id.background);
foreground = itemView.findViewById(R.id.foreground);
quantity = itemView.findViewById(R.id.quantity);
}
}
#NonNull
#Override
public RecyclerView.ViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
view = LayoutInflater.from(parent.getContext()).inflate(R.layout.adapter_cart, parent, false);
viewku = LayoutInflater.from(parent.getContext()).inflate(R.layout.cart, parent, false);
return new MyCart(view);
}
#Override
public void onBindViewHolder(#NonNull RecyclerView.ViewHolder holder, int position) {
kuantitas = carts.get(position).getJumlah();
int hargaku = carts.get(position).getHarga() * kuantitas;
for (int a = 0; a < carts.size(); a++){
Log.d("cartsizeku", "onBindViewHolder: " + carts.size()+ " s " + carts.get(a).getNamacart() + " s " + carts.get(a).getHarga());
String nama = carts.get(position).getNamacart();
if (nama.equals(carts.get(a).getNamacart())){
totalhargas.setText(String.valueOf(totalCart(carts, carts.get(a).getNamacart())));
totalberats.setText(String.valueOf(beratCart(carts, carts.get(a).getNamacart())));
}
}
Locale locale = new Locale("id", "ID");
NumberFormat format = NumberFormat.getCurrencyInstance(locale);
((MyCart)holder).harga.setText(format.format(Double.valueOf(hargaku)));
((MyCart)holder).nama.setText(carts.get(position).getNamacart());
Glide.with(view).load(carts.get(position).getGambar()).into(((MyCart)holder).gambar);
Intent intent = new Intent("message_subject_intent");
// intent.putExtra("name", String.valueOf((totalCart(carts))));
intent.putExtra("title", String.valueOf((getName(carts))));
LocalBroadcastManager.getInstance(context).sendBroadcast(intent);
((MyCart) holder).tambah.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
int count = Integer.parseInt(((MyCart) holder).quantitas.getText().toString());
if (count<9){
count+=1;
((MyCart)holder).quantitas.setText(String.valueOf(count));
int harga = carts.get(position).getHarga()*count;
((MyCart)holder).harga.setText(String.valueOf(format.format(Double.valueOf(harga))));
String nama = carts.get(position).getNamacart();
totalhargas.setText(String.valueOf(totalCart(carts, nama)));
totalberats.setText(String.valueOf(beratCart(carts, nama)));
}
// ((MyCart)holder).quantitas.setText(String.valueOf(kuantitas));
int total = hargaku * kuantitas;
Intent intents = new Intent("message_subject_intent");
intents.putExtra("name", String.valueOf((getName(carts))));
LocalBroadcastManager.getInstance(context).sendBroadcast(intents);
}
});
((MyCart) holder).kurang.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
int count = Integer.parseInt(((MyCart)holder).quantitas.getText().toString());
if (count>1){
count-=1;
((MyCart)holder).quantitas.setText(String.valueOf(count));
int harga = carts.get(position).getHarga()*count;
((MyCart)holder).harga.setText(String.valueOf(format.format(Double.valueOf(harga))));
String nama = carts.get(position).getNamacart();
totalhargas.setText(String.valueOf(kurangtotalcart(carts, nama)));
totalberats.setText(String.valueOf(kurangberatCart(carts, nama)));
}
// ((MyCart)holder).quantitas.setText(String.valueOf(kuantitas));
int total = hargaku * kuantitas;
Intent intents = new Intent("message_subject_intent");
intents.putExtra("name", String.valueOf((getName(carts))));
LocalBroadcastManager.getInstance(context).sendBroadcast(intents);
}
});
}
#Override
public int getItemCount() {
return carts.size();
}
public int totalCart(ArrayList<MadolCart> items, String name){
for(int i = 0 ; i < items.size(); i++) {
totalname = items.get(i).getNamacart();
if (totalname.equals(name)){
totalharga += items.get(i).getHarga();
}
}
return totalharga;
}
public int kurangtotalcart(ArrayList<MadolCart> items, String name){
for(int i = 0 ; i < items.size(); i++) {
totalname = items.get(i).getNamacart();
if (totalname.equals(name)){
totalharga -= items.get(i).getHarga();
}
}
return totalharga;
}
public int beratCart(ArrayList<MadolCart> items, String name){
for(int i = 0 ; i < items.size(); i++) {
totalname = items.get(i).getNamacart();
if (totalname.equals(name)){
totalBerat += items.get(i).getBerat();
}
}
return totalBerat;
}
public int kurangberatCart(ArrayList<MadolCart> items, String name){
for(int i = 0 ; i < items.size(); i++) {
totalname = items.get(i).getNamacart();
if (totalname.equals(name)){
totalBerat -= items.get(i).getBerat();
}
}
return totalBerat;
}
public String getName(List<MadolCart> name){
String ku = "";
for (int i = 0; i < name.size(); i++){
ku += name.get(i).getNamacart() + ", ";
}
return ku;
}
public void removeItem(int item){
carts.remove(item);
notifyItemRemoved(item);
}
public void restoreItem(MadolCart madolCart, int item){
carts.add(item, madolCart);
notifyItemInserted(item);
}
public void quantityPlus(MadolCart madolCart, int item){
}
}
and this is my activity
package app.gify.co.id.activity;
import android.annotation.SuppressLint;
import android.app.Dialog;
import android.app.FragmentTransaction;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.text.Html;
import android.text.Spannable;
import android.text.SpannableString;
import android.text.Spanned;
import android.text.SpannedString;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.Window;
import android.view.animation.LinearInterpolator;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
import androidx.annotation.Nullable;
import androidx.appcompat.app.AppCompatActivity;
import androidx.fragment.app.Fragment;
import androidx.localbroadcastmanager.content.LocalBroadcastManager;
import androidx.recyclerview.widget.GridLayoutManager;
import androidx.recyclerview.widget.ItemTouchHelper;
import androidx.recyclerview.widget.RecyclerView;
import com.android.volley.Request;
import com.android.volley.RequestQueue;
import com.android.volley.toolbox.JsonObjectRequest;
import com.android.volley.toolbox.StringRequest;
import com.android.volley.toolbox.Volley;
import com.bumptech.glide.Glide;
import com.bumptech.glide.request.target.DrawableImageViewTarget;
import com.google.android.material.navigation.NavigationView;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.io.IOException;
import java.io.InputStream;
import java.text.NumberFormat;
import java.util.ArrayList;
import java.util.Currency;
import java.util.Locale;
import java.util.Random;
import app.gify.co.id.R;
import app.gify.co.id.adapter.AdapterCart;
import app.gify.co.id.modal.MadolCart;
//import app.gify.co.id.thirdparty.GMailSender;
//import app.gify.co.id.thirdparty.SenderAgent;
import app.gify.co.id.widgets.RecyclerTouchDelete;
import static app.gify.co.id.baseurl.UrlJson.DELETECART;
import static app.gify.co.id.baseurl.UrlJson.GETBARANG;
import static app.gify.co.id.baseurl.UrlJson.GETCART;
public class CartActivity extends AppCompatActivity implements RecyclerTouchDelete.RecyclerTouchListener{
Button Checkout, lanjutBelanja;
ImageView backCart;
TextView totalbelanjar, totalberat;
AdapterCart adapterCart;
ArrayList<MadolCart> madolCarts;
String namacart, gambarcart, uidku;
GridLayoutManager glm;
RecyclerView recyclerView;
MainActivity mainActivity;
NavigationView navigationView;
public int hargaku, beratku, kuantitas, lastNumber, idbarang, getHargaAwal;
SharedPreferences preferences;
SharedPreferences.Editor editor;
Spanned templateConvert;
NumberFormat format;
Locale id;
Random random;
String template, idberat, idharga;
private Dialog dialog;
LayoutInflater inflater;
ImageView goku;
#Override
protected void onCreate(#Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.cart);
lanjutBelanja = findViewById(R.id.lanjutBelanjaChart);
lanjutBelanja.setOnClickListener(v -> {
Intent intent = new Intent(getApplicationContext(), List_Kado.class);
startActivity(intent);
});
getHargaAwal = getIntent().getIntExtra("harga", 0);
Log.d("setHarga", getHargaAwal + "");
dialog = new Dialog(CartActivity.this);
inflater = (LayoutInflater)this.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View layout = inflater.inflate(R.layout.loading, null);
goku = layout.findViewById(R.id.custom_loading_imageView);
goku.animate().rotationBy(360).setDuration(3000).setInterpolator(new LinearInterpolator()).start();
dialog.getWindow().setBackgroundDrawableResource(android.R.color.transparent);
dialog.setCancelable(false);
dialog.setContentView(layout);
dialog.show();
id = new Locale("id", "ID");
format = NumberFormat.getCurrencyInstance(id);
random = new Random();
lastNumber = 0;
for (int k = 0; k < 3; k++){
lastNumber+=(random.nextInt(10)*Math.pow(10, k));
}
backCart = findViewById(R.id.backCartNav);
backCart.setOnClickListener(v -> finish());
Checkout = findViewById(R.id.checkoutChart);
totalbelanjar = findViewById(R.id.totalBelanjaChart);
totalberat = findViewById(R.id.totalBeratChart);
recyclerView = findViewById(R.id.rvChart);
preferences = PreferenceManager.getDefaultSharedPreferences(CartActivity.this);
uidku = preferences.getString("uid", "");
madolCarts = new ArrayList<>();
getCart();
glm = new GridLayoutManager(CartActivity.this, 1);
recyclerView.setLayoutManager(glm);
Checkout.setOnClickListener(view -> {
Intent intent = new Intent(CartActivity.this, CheckoutActivity.class);
intent.putExtra("idharga", idharga);
intent.putExtra("name", namacart);
preferences = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
editor = preferences.edit();
editor.remove("range");
editor.remove("acara");
editor.remove("buat");
editor.apply();
startActivity(intent);
});
LocalBroadcastManager.getInstance(this).registerReceiver(passValue, new IntentFilter("message_subject_intent"));
ItemTouchHelper.SimpleCallback callback = new RecyclerTouchDelete(0, ItemTouchHelper.LEFT, this);
new ItemTouchHelper(callback).attachToRecyclerView(recyclerView);
}
public String LoadData(String inFile) {
String tContents = "";
try {
InputStream stream = getAssets().open(inFile);
int size = stream.available();
byte[] buffer = new byte[size];
stream.read(buffer);
stream.close();
tContents = new String(buffer);
} catch (IOException e) {
// Handle exceptions here
}
return tContents;
}
private String replaceNumberOfAmount(String original, int replace){
return original.substring(0, original.length() - 3) + replace;
}
// private void senderEmail(){
// SenderAgent senderAgent = new SenderAgent("gify.firebase#gmail.com", "Confirmation Transaction Gify", templateConvert, CartActivity.this);
// senderAgent.execute();
// }
private void getCart(){
JsonObjectRequest objectRequest = new JsonObjectRequest(Request.Method.GET, GETCART, null, response -> {
try {
JSONArray array = response.getJSONArray("YukNgaji");
for (int a = 0; a < array.length(); a++){
JSONObject object = array.getJSONObject(a);
String id_tetap = object.getString("id_tetap");
if (id_tetap.equalsIgnoreCase(uidku)){
kuantitas = object.getInt("jumlah");
idbarang = object.getInt("id_barang");
idharga = object.getString("harga");
idberat = object.getString("berat");
getBerat(idbarang);
dialog.dismiss();
}
}
dialog.dismiss();
} catch (JSONException e) {
e.printStackTrace();
}
}, error -> {
Log.d("getcart", "getCart: " + error.getMessage());
});
RequestQueue queue = Volley.newRequestQueue(CartActivity.this);
queue.add(objectRequest);
}
public BroadcastReceiver passValue = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
namacart = intent.getStringExtra("name");
Log.d("hargalast", namacart + "");
namacart = intent.getStringExtra("title");
template = "<h2> Gify Transaction </h2> " +
"<h3> Kamu baru saja melakukan pesanan dengan detail sebagai berikut </h3>"
+ "<p><b> Nama barang: </p></b>"
+ "<p><b> Harga barang" + format.format(Double.valueOf(replaceNumberOfAmount(idharga, lastNumber))) + ". Silahkan transfer dengan tiga digit terakhir yaitu :" + lastNumber + "</p></b>"
+ "<p><b> Jika sudah melakukan pembayaran, silahkan konfirmasi disini </p></b>"
+ "https://api.whatsapp.com/send?phone=082325328732&text=Confirmation%20Text"
+ "<h2>Salam, Gify Team</h2>";
Log.d("hargalast", idharga + lastNumber);
templateConvert = Html.fromHtml(template);
}
};
private void getBerat(int idbarang){
JsonObjectRequest objectRequest = new JsonObjectRequest(Request.Method.GET, GETBARANG, null, response -> {
try {
JSONArray array = response.getJSONArray("YukNgaji");
for (int a = 0; a < array.length(); a++){
JSONObject object = array.getJSONObject(a);
int id_barang = object.getInt("id");
if (idbarang==id_barang){
String gambar = object.getString("photo");
int harga = object.getInt("harga");
String namacart = object.getString("nama");
int berat = object.getInt("berat");
MadolCart madolCart = new MadolCart(gambar, harga, namacart, idbarang, kuantitas, berat);
madolCarts.add(madolCart);
adapterCart = new AdapterCart(madolCarts, CartActivity.this, totalbelanjar, totalberat);
recyclerView.setAdapter(adapterCart);
}
}
} catch (JSONException e) {
e.printStackTrace();
}
}, error -> {
Log.d("jsoner", "getBerat: " + error.getMessage());
});
RequestQueue queue = Volley.newRequestQueue(CartActivity.this);
queue.add(objectRequest);
}
#Override
public void onSwipe(RecyclerView.ViewHolder viewHolder, int dir, int pos) {
if (viewHolder instanceof AdapterCart.MyCart){
String name = madolCarts.get(viewHolder.getAdapterPosition()).getNamacart();
MadolCart madolCart = madolCarts.get(viewHolder.getAdapterPosition());
int deleteIndex = viewHolder.getAdapterPosition();
Log.d("taptap", "onSwipe: " + madolCarts.get(viewHolder.getAdapterPosition()).getNamacart());
GETBARANG(madolCarts.get(viewHolder.getAdapterPosition()).getNamacart());
adapterCart.removeItem(viewHolder.getAdapterPosition());
}
}
private void deletecart(String id_barang){
StringRequest stringRequest = new StringRequest(Request.Method.GET, DELETECART+"?idtetap="+uidku+"&idbarang="+id_barang, response -> {
try {
if (response.equalsIgnoreCase("bisa")){
Toast.makeText(CartActivity.this, "Barang telah di hapus", Toast.LENGTH_SHORT).show();
Log.d("bisabarangcart", "GETBARANG: " );
}
}catch (Exception e){
Log.d("ekscartactivity", "deletecart: " + e.getMessage());
}
}, error -> {
Log.d("ernocartdel", "deletecart: " + error.getMessage());
});
RequestQueue queue = Volley.newRequestQueue(CartActivity.this);
queue.add(stringRequest);
}
private void GETBARANG(String namas){
JsonObjectRequest objectRequest = new JsonObjectRequest(Request.Method.GET, GETBARANG,null, response -> {
try {
JSONArray array = response.getJSONArray("YukNgaji");
for (int a = 0; a < array.length(); a++){
JSONObject object = array.getJSONObject(a);
String nama = object.getString("nama");
if (nama.equalsIgnoreCase(namas)){
Log.d("namabarang", "GETBARANG: " + nama + " s " + namas);
String id = object.getString("id");
deletecart(id);
}
}
}catch (Exception e){
Log.d("barangexce", "GETBARANG: " + e.getMessage());
}
}, error -> {
Log.d("errorgetbrng", "GETBARANG: " + error.getMessage());
});
RequestQueue queue = Volley.newRequestQueue(CartActivity.this);
queue.add(objectRequest);
}
}
to make sum of total prices i used this code
public int totalCart(ArrayList<MadolCart> items, String name){
for(int i = 0 ; i < items.size(); i++) {
totalname = items.get(i).getNamacart();
if (totalname.equals(name)){
totalharga += items.get(i).getHarga();
}
}
return totalharga;
}
i put summing code in a method, and call the method on if button + is clicked
if button - is clicked it will call this method
public int kurangtotalcart(ArrayList<MadolCart> items, String name){
for(int i = 0 ; i < items.size(); i++) {
totalname = items.get(i).getNamacart();
if (totalname.equals(name)){
totalharga -= items.get(i).getHarga();
}
}
return totalharga;
}
and now idk how to get seperated quanitity for each position / item in recycler view then send it to activity as format ( 1, 2, 3) (,) mean a seperator for each item
How to get value seperated quantity from recycler view item position?
SOLVED
public String getSeperatedquantity(List<MadolCart> quantity){
String kus = "";
for (int i = 0; i < quantity.size(); i++){
kus += quantity.get(i).getQuantity() + ", ";
}
return kus;
}

I found the solution by adding this:
public String getSeperatedquantity(List<MadolCart> quantity){
String kus = "";
for (int i = 0; i < quantity.size(); i++){
kus += quantity.get(i).getQuantity() + ", ";
}
return kus;
}

When I check item on RecyclerView other items get checked too

My app is an attendance for students; I create a list of the students and when I click on the student's name the picture must be checked.
The problem is when I scroll down I see other students get checked too.
`public class attendanceAdapter extends RecyclerView.Adapter{
private List<MyStudentsModel> studentsModels;
private AttendanceModel attModels;
private List<String> attList;
private Context context;
private DatabaseReference present, mr7laCount;
private String date = "1/6/2018";
public attendanceAdapter(Context context, List<MyStudentsModel> studentsModels){
this.context = context;
this.studentsModels = studentsModels;
}
#NonNull
#Override
public StudentAttHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.my_single_student_att_view,parent,false);
StudentAttHolder studentAttHolder = new StudentAttHolder(view);
attModels = new AttendanceModel();
attList = new ArrayList<>();
present = FirebaseDatabase.getInstance().getReference("Attendance");
mr7laCount = FirebaseDatabase.getInstance().getReference("AllCount");
return studentAttHolder;
}
#SuppressLint("SetTextI18n")
#Override
public void onBindViewHolder(#NonNull final StudentAttHolder holder, int position) {
final String split[] = date.split("/");
final MyStudentsModel student = studentsModels.get(position);
holder.stu_name.setText(student.getFirstName() +" "+ student.getSecondName());
if (student.getServedImage().equals("0") | student.getServedImage() == null){
Glide.with(context).load(R.drawable.daria).into(holder.stu_img);
}else {
Glide.with(context)
.load(Uri.parse(student.getServedImage()))
.into(holder.stu_img);
}
final String id = student.getSid();
holder.stu_img.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
holder.stu_tgb.toggle();
if(holder.stu_tgb.isChecked()){
attList.add(id);
String date = split[2] + "x" + split[1] + "x" + split[0];
String dateM = split[2] + "/" + split[1] + "/" + split[0];
int total = getItemCount();
int absence = total - attList.size();
attModels.setDay(dateM);
attModels.setPresence(String.valueOf(attList.size()));
attModels.setAbsence(String.valueOf(absence));
attModels.setTotal(String.valueOf(total));
present
.child("Served")
.child(student.getAlmar7la())
.child(student.getAlfasl())
.child(split[0])
.child(split[1])
.child(split[2])
.setValue(attList);
mr7laCount
.child("Served")
.child(student.getAlmar7la())
.child(String.valueOf(date))
.child(student.getAlfasl())
.setValue(attModels);
} else {
attList.remove(id);
String date = split[2] + "x" + split[1] + "x" + split[0];
String dateM = split[2] + "/" + split[1] + "/" + split[0];
int total = getItemCount();
int absence = total - attList.size();
attModels.setDay(dateM);
attModels.setPresence(String.valueOf(attList.size()));
attModels.setAbsence(String.valueOf(absence));
attModels.setTotal(String.valueOf(total));
present
.child("Served")
.child(student.getAlmar7la())
.child(student.getAlfasl())
.child(split[0])
.child(split[1])
.child(split[2])
.setValue(attList);
if(attList.size() == 0){
mr7laCount
.child("Served")
.child(student.getAlmar7la())
.child(String.valueOf(date))
.child(student.getAlfasl())
.removeValue();
}else {
mr7laCount
.child("Served")
.child(student.getAlmar7la())
.child(String.valueOf(date))
.child(student.getAlfasl())
.setValue(attModels);
}
}
}
});
}
#Override
public int getItemCount() {
return studentsModels.size();
}
final public class StudentAttHolder extends RecyclerView.ViewHolder{
ImageView stu_img;
TextView stu_name;
ToggleButton stu_tgb;
public StudentAttHolder(View itemView) {
super(itemView);
stu_name = itemView.findViewById(R.id.student_name_att);
stu_img = itemView.findViewById(R.id.student_image_att);
stu_tgb = itemView.findViewById(R.id.student_toggleButton);
}
}
}
`
when I checked Faustino Hausner
I saw Wilber Bainbridge and Hester Barley checked too

while retreiving contacts again on onResume, last contact is re-added on first card in recycler view

I do not understand why last contact is added to the first card in recyclerview again when activity is resumed. I know that it is to do with cursor or content resolver.
Here is the java class with which I have problem.
while retreiving contacts again on onResume, last contact is re-added on first card in recycler view
package com.android.eventers;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.SharedPreferences;
import android.database.Cursor;
import android.os.Bundle;
import android.os.Parcelable;
import android.provider.ContactsContract;
import android.support.design.widget.FloatingActionButton;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.util.Log;
import android.view.View;
import android.widget.TextView;
import android.widget.Toast;
import com.google.i18n.phonenumbers.PhoneNumberUtil;
import com.google.i18n.phonenumbers.PhoneNumberUtil.PhoneNumberType;
import com.google.i18n.phonenumbers.Phonenumber.PhoneNumber;
import java.util.ArrayList;
import java.util.Locale;
public class ContactsActivity extends AppCompatActivity implements ContactsAdapter.ListItemClickListener {
private static final int CHECK_CLICK = 1;
private static final String LIST_STATE_KEY = "list_state";
FloatingActionButton mFloatingActionButton;
RecyclerView mRecyclerView;
ContactsAdapter mAdapter;
String contactName;
String mobileNumber;
String mobileNumberSelected;
Contacts contactsObject;
TextView noItem;
private ArrayList<Contacts> contactsArrayList;
ArrayList<String> tempList;
private Parcelable mListState;
private LinearLayoutManager mLayoutManager;
SharedPreferences mSharedPreferences;
SharedPreferences.Editor mEditor;
private boolean mCalledFromOncreate;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_contacts);
mCalledFromOncreate = true;
noItem = (TextView) findViewById(R.id.no_listitem_in_contacts);
noItem.setVisibility(View.GONE);
mFloatingActionButton = (FloatingActionButton) findViewById(R.id.add_fab_in_main);
contactsArrayList = new ArrayList<Contacts>();
mSharedPreferences = getPreferences(Context.MODE_PRIVATE);
mEditor = mSharedPreferences.edit();
launchConacts();
for (int i = 0; i < contactsArrayList.size(); i++) {
Log.e("name:", "" + contactsArrayList.get(i).getName());
for (int j = 0; j < contactsArrayList.get(i).getMobileNumber().size(); j++) {
Log.e("num:", contactsArrayList.get(i).getMobileNumber().get(j));
}
}
mFloatingActionButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
String data = "";
int counter = 0;
for (int i = 0; i < contactsArrayList.size(); i++) {
Contacts singleContact = contactsArrayList.get(i);
if (contactsArrayList.get(i).getFlag()) {
data = data + "\n" + singleContact.getName().toString() + " " + singleContact.getSelectedMobileNumber();
counter++;
mEditor.putBoolean("checkbox_" + contactsArrayList.get(i).getName(), true);
mEditor.putString("selected_mobile_number_for_" + contactsArrayList.get(i).getName(), "" + singleContact.getSelectedMobileNumber());
} else {
mEditor.putBoolean("checkbox_" + contactsArrayList.get(i).getName(), false);
mEditor.putString("selected_mobile_number_for_" + contactsArrayList.get(i).getName(), "" + singleContact.getSelectedMobileNumber());
}
}
mEditor.commit();
Toast.makeText(ContactsActivity.this, "Selected contacts: \n" + data, Toast.LENGTH_LONG).show();
Intent intent = new Intent(ContactsActivity.this, ReportActivity.class);
intent.putExtra("TOTAL_KEY", contactsArrayList.size() + "");
intent.putExtra("SELECTED_KEY", counter + "");
startActivity(intent);
}
});
}
#Override
public void onListItemClick(final int clickedItemIndex, int whichClick) {
switch (whichClick) {
case CHECK_CLICK: {
//Toast.makeText(ContactsActivity.this, "Clicked on Checkbox: "+clickedItemIndex , Toast.LENGTH_SHORT).show();
int selectedMobileNumberPosition = 0;
String selectedMobileNumber = contactsArrayList.get(clickedItemIndex).getSelectedMobileNumber();
if (contactsArrayList.get(clickedItemIndex).getMobileNumber().size() > 1) {
final String items[] = new String[contactsArrayList.get(clickedItemIndex).getMobileNumber().size()];
for (int j = 0; j < contactsArrayList.get(clickedItemIndex).getMobileNumber().size(); j++) {
items[j] = contactsArrayList.get(clickedItemIndex).getMobileNumber().get(j);
if (items[j].contains(selectedMobileNumber)) {
selectedMobileNumberPosition = j;
}
}
AlertDialog levelDialog;
// Creating and Building the Dialog
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("Please select the mobile number");
builder.setSingleChoiceItems(items, selectedMobileNumberPosition, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int item) {
mobileNumberSelected = items[item];
contactsArrayList.get(clickedItemIndex).setSelectedMobileNumber(mobileNumberSelected);
// levelDialog.dismiss();
}
});
builder.setPositiveButton("yes", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface arg0, int arg1) {
// Toast.makeText(ContactsActivity.this, "You clicked yes button", Toast.LENGTH_LONG).show();
}
});
levelDialog = builder.create();
levelDialog.show();
}
break;
}
}
}
protected void onSaveInstanceState(Bundle state) {
super.onSaveInstanceState(state);
// Save list state
mListState = mLayoutManager.onSaveInstanceState();
state.putParcelable(LIST_STATE_KEY, mListState);
}
protected void onRestoreInstanceState(Bundle state) {
super.onRestoreInstanceState(state);
// Retrieve list state and list/item positions
if (state != null)
mListState = state.getParcelable(LIST_STATE_KEY);
}
#Override
protected void onResume() {
super.onResume();
if (!mCalledFromOncreate) {
contactsArrayList.clear();
launchConacts();
mAdapter.notifyDataSetChanged();
Log.e("Inside", "onResume after clear");
}
if (mListState != null) {
mLayoutManager.onRestoreInstanceState(mListState);
}
}
void launchConacts() {
//Cursor pho = getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, null, null, ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME + " COLLATE NOCASE ASC");
Cursor phones = getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, null, null, ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME + " COLLATE NOCASE ASC");
Log.i("Size is "," "+phones.getCount());
if (phones != null && (phones.getCount() > 0)) {
phones.moveToFirst();
phones.move(0);
for (int i = 0; i < phones.getCount(); i++) {
String name = phones.getString(phones.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME));
String phoneNumberStr = phones.getString(phones.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
try {
final PhoneNumberUtil phoneNumberUtil = PhoneNumberUtil.getInstance();
PhoneNumber phoneNumber = phoneNumberUtil.parse(phoneNumberStr, Locale.getDefault().getCountry());
PhoneNumberUtil.PhoneNumberType phoneNumberType = phoneNumberUtil.getNumberType(phoneNumber);
if (phoneNumberType == PhoneNumberType.MOBILE) {
if (name.equals(contactName)) {
phoneNumberStr = phoneNumberStr.replaceAll(" ", "");
if (phoneNumberStr.contains(mobileNumber)) {
} else {
mobileNumber = String.valueOf(phoneNumber.getNationalNumber());
if (!tempList.contains(mobileNumber)) {
// Log.e("phone: ", " " + phoneNumber);
contactsObject.setMobileNumber(mobileNumber);
tempList.add(mobileNumber);
}
}
} else {
if (contactsObject != null) {
contactsArrayList.add(contactsObject);
Log.e("object added", contactsObject.getName());
}
contactsObject = new Contacts();
tempList = new ArrayList<String>();
contactName = name;
mobileNumber = String.valueOf(phoneNumber.getNationalNumber());
tempList.add(mobileNumber);
// Log.e("name: ", " " + name);
// Log.e("phone: ", " " + mobileNumber);
contactsObject.setName(name);
contactsObject.setMobileNumber(mobileNumber);
contactsObject.setFlag(mSharedPreferences.getBoolean("checkbox_" + name, false));
contactsObject.setSelectedMobileNumber(mSharedPreferences.getString("selected_mobile_number_for_" + name, mobileNumber));
}
}
} catch (Exception e) {
} finally {
}
if (phones.isLast()) {
contactsArrayList.add(contactsObject);
// Log.e("object added last>>>>>", contactsObject.getName());
}
phones.moveToNext();
}
//phones.close();
}
mRecyclerView = (RecyclerView)
findViewById(R.id.recycler_view_in_contacts);
mRecyclerView.setHasFixedSize(true);
mLayoutManager = new
LinearLayoutManager(getApplicationContext());
mRecyclerView.setLayoutManager(mLayoutManager);
mAdapter = new
ContactsAdapter(contactsArrayList, ContactsActivity.this);
mRecyclerView.setAdapter(mAdapter);
if (contactsArrayList.size() == 0)
{
noItem.setVisibility(View.VISIBLE);
}
}
#Override
protected void onPause() {
super.onPause();
mCalledFromOncreate = false;
}
}

Here is what I found which is adding one more item in your list
Try removing:
if (contactsObject != null) {
contactsArrayList.add(contactsObject);
Log.e("object added : ", contactsObject.getName);
}
Hope this helps.

Adapter, Timer and concurrency in Android

Main goal: android app-messendger for chating with company support.
Task: To impliment timers of waiting response from operator or client in listview.
Trouble: In all listview items rendering one of all timer, and then application is listing some timers for a moment are rendering for correctly result, but when they are overlap.
Visually you can see here: https://drive.google.com/file/d/0B_SjoeZavdZwdXlUQlU3QTVKeG8/view?usp=sharing]1
Code:
public class SessionAdapter extends BaseAdapter {
private static final String TAG = SessionAdapter.class.toString();
List<SessionInterface> sessions = new ArrayList<>();
Context context;
private Message mLastMessage;
private List<ViewHolder> lstHolders;
private Handler mHandler = new Handler();
private Runnable updateRemainingTimeRunnable = new Runnable() {
#Override
public void run() {
synchronized (lstHolders) {
long currentTime = System.currentTimeMillis();
for (ViewHolder holder : lstHolders) {
holder.updateTimeRemaining(currentTime, 0);
}
}
}
};
public SessionAdapter(List<SessionInterface> sessions, Context context) {
this.sessions = sessions;
this.context = context;
lstHolders = new ArrayList<>();
startUpdateTimer();
}
public void updateSessions(List<SessionInterface> sessionInterface) {
this.sessions = sessionInterface;
}
#Override
public int getCount() {
return sessions.size();
}
#Override
public SessionInterface getItem(int position) {
return sessions.get(position);
}
#Override
public long getItemId(int position) {
SessionInterface session = sessions.get(position);
return session.getId();
}
public long getPositionById(long id) {
for (int i = 1; i < sessions.size(); i++) {
long sessionId = getItemId(i);
Log.d(TAG, "getPositionById-i: " + i);
Log.d(TAG, "getPositionById-id: " + id);
Log.d(TAG, "getPositionById-sessionId: " + sessionId);
boolean eq = id == sessionId;
Log.d(TAG, "getPositionById-sessionId==id: " + eq);
if(eq) {
return i;
}
}
return 0;
}
private void startUpdateTimer() {
Timer tmr = new Timer();
tmr.schedule(new TimerTask() {
#Override
public void run() {
mHandler.post(updateRemainingTimeRunnable);
}
}, 1000, 1000);
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
final SessionInterface session = sessions.get(position);
ViewHolder holder;
mLastMessage = session.getMessages().get(session.getMessages().size() - 1);
if(convertView == null) {
holder = new ViewHolder();
convertView = LayoutInflater.from(context).inflate(R.layout.adapter_sessions, null);
holder.label = (TextView) convertView.findViewById(R.id.label);
holder.sessionTitle = (TextView) convertView.findViewById(R.id.ticket_title);
holder.date = (TextView) convertView.findViewById(R.id.date);
holder.message = (TextView) convertView.findViewById(R.id.comment);
holder.status = (TextView) convertView.findViewById(R.id.status);
holder.chatStatusImage = (ImageView) convertView.findViewById(R.id.ticket_status);
holder.timeRemaining = (TextView) convertView.findViewById(R.id.time_remaining);
convertView.setTag(holder);
synchronized (lstHolders) {
lstHolders.add(holder);
}
} else {
holder = (ViewHolder) convertView.getTag();
}
holder.label.setText("Чат #" + session.getId());
holder.sessionTitle.setText(Helpers.stringLimit(session.getQueue().getName(), 30));
try {
Date jud = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss", new Locale("ru")).parse(mLastMessage.getDate());
String targetFormat = new SimpleDateFormat("d MMMM, HH:mm", new Locale("ru")).format(jud);
long milliseconds = jud.getTime();
holder.date.setText(targetFormat);
if(session.getClosedTimeAgo() == null) {
holder.updateTimeRemaining(System.currentTimeMillis(), milliseconds);
holder.timeRemaining.setVisibility(View.VISIBLE);
} else {
holder.timeRemaining.setVisibility(View.GONE);
}
} catch (ParseException e) {
e.printStackTrace();
}
holder.message.setText(Helpers.stringLimit(Helpers.stripLineBreaks(mLastMessage.getText(), " "), 50));
if(session.getIs_closed() == 1) {
holder.setClosed(convertView);
} else {
if(mLastMessage.getSender_type().equals(Constants.CLIENT_TYPE)) {
holder.setClientWaiting(convertView);
} else {
holder.setOperatorWaiting(convertView);
}
}
return convertView;
}
private class ViewHolder {
TextView label;
TextView sessionTitle;
TextView date;
TextView message;
TextView status;
ImageView chatStatusImage;
TextView timeRemaining;
public void updateTimeRemaining(long currentTime, long timeAgo) {
Log.d(TAG, "updateTimeRemaining:\n currentTime - " + currentTime + ";\n timeAgo - " + timeAgo + ";\n timeDiff(currentTime - timeAgo) = " + (currentTime - timeAgo));
Log.d(TAG, "updateTimeRemaining:\n currentTime - " + currentTime + ";\n timeAgo - " + timeAgo + ";\n timeDiff(timeAgo - currentTime) = " + (timeAgo - currentTime));
long timeDiff = currentTime - timeAgo;
if (timeDiff > 0) {
int seconds = (int) (timeDiff / 1000) % 60;
int minutes = (int) ((timeDiff / (1000 * 60)) % 60);
int hours = (int) ((timeDiff / (1000 * 60 * 60)) % 24);
int hourMinutes = hours*60 + minutes;
timeRemaining.setText(hourMinutes + ":" + (seconds < 10 ? "0" + seconds : seconds));
} else {
timeRemaining.setText("Expired!!");
}
}
public void setClosed(View convertView) {
this.status.setText("Закрыто");
this.status.setTextColor(convertView.getResources().getColor(R.color.closedText));
this.chatStatusImage.setImageDrawable(convertView.getResources().getDrawable(R.drawable.chat_status_closed));
}
public void setOperatorWaiting(View convertView) {
this.status.setText("Оператор ожидает ваш ответ");
this.status.setTextColor(convertView.getResources().getColor(R.color.clientColor));
this.timeRemaining.setTextColor(convertView.getResources().getColor(R.color.clientColor));
this.chatStatusImage.setImageDrawable(convertView.getResources().getDrawable(R.drawable.chat_status_client));
}
public void setClientWaiting(View convertView) {
this.status.setText("Ожидается ответ оператора");
this.status.setTextColor(convertView.getResources().getColor(R.color.operatorColor));
this.timeRemaining.setTextColor(convertView.getResources().getColor(R.color.operatorColor));
this.chatStatusImage.setImageDrawable(convertView.getResources().getDrawable(R.drawable.chat_status_operator));
}
}
}

Fooh.. year.. It's was realy not easy..
Here is my resolving.. maybe it will help anobody in future..
import android.content.Context;
import android.os.Handler;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Date;
import java.util.List;
import java.util.Locale;
import java.util.TimeZone;
import java.util.Timer;
import java.util.TimerTask;
import java.util.concurrent.TimeUnit;
import ru.pinspb.pinsupport.R;
import ru.pinspb.pinsupport.common.Constants;
import ru.pinspb.pinsupport.pojo.Message;
import ru.pinspb.pinsupport.pojo.SessionInterface;
import ru.pinspb.pinsupport.utils.Helpers;
public class SessionAdapter extends RecyclerView.Adapter<SessionAdapter.Holder> {
public interface OnItemClickListener {
void onItemClick(SessionInterface item);
}
private static final String TAG = SessionAdapter.class.toString();
private final OnItemClickListener listener;
List<SessionInterface> sessions = new ArrayList<>();
Context context;
private Message mLastMessage;
private Handler mHandler = new Handler();
public SessionAdapter(List<SessionInterface> sessions, Context context, OnItemClickListener listener) {
this.sessions = sessions;
this.context = context;
this.listener = listener;
}
public void updateSessions(List<SessionInterface> sessionInterface) {
this.sessions = sessionInterface;
}
public int getCount() {
return sessions.size();
}
public SessionInterface getItem(int position) {
return sessions.get(position);
}
#Override
public Holder onCreateViewHolder(ViewGroup parent, int viewType) {
View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.adapter_sessions, null);
return new Holder(v);
}
#Override
public void onBindViewHolder(final Holder holder, int position) {
final SessionInterface session = sessions.get(position);
mLastMessage = session.getMessages().get(session.getMessages().size() - 1);
holder.bind(session, listener);
holder.label.setText("Чат #" + session.getId());
holder.sessionTitle.setText(Helpers.stringLimit(session.getQueue().getName(), 30));
try {
SimpleDateFormat ru = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss", new Locale("ru"));
ru.setTimeZone(TimeZone.getTimeZone("GMT+03:00"));
Date jud = ru.parse(mLastMessage.getDate());
String targetFormat = new SimpleDateFormat("d MMMM, HH:mm", new Locale("ru")).format(jud);
final long milliseconds = jud.getTime();
holder.date.setText(targetFormat);
if(session.getClosedTimeAgo() == null) {
startUpdateTimer(new Runnable() {
#Override
public void run() {
Calendar calendar = Calendar.getInstance(TimeZone.getTimeZone("Europe/Moscow"));
Date currentDate = calendar.getTime();
holder.updateTimeRemaining(currentDate.getTime(), milliseconds);
}
});
// Log.d(TAG, "Sid: " + session.getId() + " ;\nnow: " + System.currentTimeMillis() + ";\n last date: " + mLastMessage.getDate() + "; \nmill: " + milliseconds );
holder.timeRemaining.setVisibility(View.VISIBLE);
} else {
holder.timeRemaining.setVisibility(View.GONE);
}
} catch (ParseException e) {
e.printStackTrace();
}
holder.message.setText(Helpers.stringLimit(Helpers.stripLineBreaks(mLastMessage.getText(), " "), 50));
if(session.getIs_closed() == 1) {
holder.setClosed();
} else {
if(mLastMessage.getSender_type().equals(Constants.CLIENT_TYPE)) {
holder.setClientWaiting();
} else {
holder.setOperatorWaiting();
}
}
}
#Override
public long getItemId(int position) {
SessionInterface session = sessions.get(position);
return session.getId();
}
#Override
public int getItemCount() {
return sessions.size();
}
public long getPositionById(long id) {
for (int i = 1; i < sessions.size(); i++) {
long sessionId = getItemId(i);
boolean eq = id == sessionId;
if(eq) {
return i;
}
}
return 0;
}
private void startUpdateTimer(final Runnable runnable) {
Timer tmr = new Timer();
tmr.schedule(new TimerTask() {
#Override
public void run() {
mHandler.post(runnable);
}
}, 1000, 1000);
}
public static class Holder extends RecyclerView.ViewHolder {
TextView label;
TextView sessionTitle;
TextView date;
TextView message;
TextView status;
ImageView chatStatusImage;
TextView timeRemaining;
public Holder(View itemView) {
super(itemView);
this.label = (TextView) itemView.findViewById(R.id.label);
this.sessionTitle = (TextView) itemView.findViewById(R.id.ticket_title);
this.date = (TextView) itemView.findViewById(R.id.date);
this.message = (TextView) itemView.findViewById(R.id.comment);
this.status = (TextView) itemView.findViewById(R.id.status);
this.chatStatusImage = (ImageView) itemView.findViewById(R.id.ticket_status);
this.timeRemaining = (TextView) itemView.findViewById(R.id.time_remaining);
}
public void updateTimeRemaining(long currentTime, long timeAgo) {
// Log.d(TAG, "updateTimeRemaining:\n currentTime - " + currentTime + ";\n timeAgo - " + timeAgo + ";\n timeDiff(currentTime - timeAgo) = " + (currentTime - timeAgo));
// Log.d(TAG, "updateTimeRemaining:\n currentTime - " + currentTime + ";\n timeAgo - " + timeAgo + ";\n timeDiff(timeAgo - currentTime) = " + (timeAgo - currentTime));
long timeDiff = currentTime - timeAgo;
long seconds = TimeUnit.MILLISECONDS.toSeconds(timeDiff) - TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(timeDiff));
String time = String.format("%d:%s",
TimeUnit.MILLISECONDS.toMinutes(timeDiff),
seconds < 10 ? seconds + "0" : String.valueOf(seconds)
);
timeRemaining.setText(time);
}
public void setClosed() {
this.status.setText("closed");
this.status.setTextColor(itemView.getResources().getColor(R.color.closedText));
this.chatStatusImage.setImageDrawable(itemView.getResources().getDrawable(R.drawable.chat_status_closed));
}
public void setOperatorWaiting() {
this.status.setText("some text");
this.status.setTextColor(itemView.getResources().getColor(R.color.clientColor));
this.timeRemaining.setTextColor(itemView.getResources().getColor(R.color.clientColor));
this.chatStatusImage.setImageDrawable(itemView.getResources().getDrawable(R.drawable.chat_status_client));
}
public void setClientWaiting() {
this.status.setText("some text");
this.status.setTextColor(itemView.getResources().getColor(R.color.operatorColor));
this.timeRemaining.setTextColor(itemView.getResources().getColor(R.color.operatorColor));
this.chatStatusImage.setImageDrawable(itemView.getResources().getDrawable(R.drawable.chat_status_operator));
}
public void bind(final SessionInterface item, final OnItemClickListener listener) {
itemView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
listener.onItemClick(item);
}
});
}
}
}

Dynamic ListView scroll TextView changed automatically

when i click + button increment the price and click - button decrease the price it's work perfectly but when i scroll listview the value of tvPrices (TextView) is changed.
What should i do for the stay increment price?
here is my adapter
public class ListAdapter extends BaseAdapter {
public ArrayList<Integer> quantity = new ArrayList<Integer>();
public ArrayList<Integer> price = new ArrayList<Integer>();
private String[] listViewItems, prices, static_price;
TypedArray images;
View row = null;
static String get_price, get_quntity;
int g_quntity, g_price, g_minus;
private Context context;
CustomButtonListener customButtonListener;
static HashMap<String, String> map = new HashMap<>();
public ListAdapter(Context context, String[] listViewItems, TypedArray images, String[] prices) {
this.context = context;
this.listViewItems = listViewItems;
this.images = images;
this.prices = prices;
for (int i = 0; i < listViewItems.length; i++) {
quantity.add(0);
price.add(0);
}
}
public void setCustomButtonListener(CustomButtonListener customButtonListner) {
this.customButtonListener = customButtonListner;
}
#Override
public int getCount() {
return listViewItems.length;
}
#Override
public String getItem(int position) {
return listViewItems[position];
}
#Override
public long getItemId(int position) {
return 0;
}
#Override
public View getView(final int position, View convertView, ViewGroup parent) {
final ListViewHolder listViewHolder;
if (convertView == null) {
LayoutInflater layoutInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
row = layoutInflater.inflate(R.layout.activity_custom_listview, parent, false);
listViewHolder = new ListViewHolder();
listViewHolder.tvProductName = (TextView) row.findViewById(R.id.tvProductName);
listViewHolder.ivProduct = (ImageView) row.findViewById(R.id.ivproduct);
listViewHolder.tvPrices = (TextView) row.findViewById(R.id.tvProductPrice);
listViewHolder.btnPlus = (ImageButton) row.findViewById(R.id.ib_addnew);
listViewHolder.edTextQuantity = (EditText) row.findViewById(R.id.editTextQuantity);
listViewHolder.btnMinus = (ImageButton) row.findViewById(R.id.ib_remove);
static_price = context.getResources().getStringArray(R.array.Price);
row.setTag(listViewHolder);
} else {
row = convertView;
listViewHolder = (ListViewHolder) convertView.getTag();
}
listViewHolder.ivProduct.setImageResource(images.getResourceId(position, -1));
try {
listViewHolder.edTextQuantity.setText(quantity.get(position) + "");
} catch (Exception e) {
e.printStackTrace();
}
listViewHolder.btnPlus.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if (customButtonListener != null) {
customButtonListener.onButtonClickListener(position, listViewHolder.edTextQuantity, 1);
quantity.set(position, quantity.get(position) + 1);
price.set(position, price.get(position) + 1);
row.getTag(position);
get_price = listViewHolder.tvPrices.getText().toString();
g_price = Integer.valueOf(static_price[position]);
get_quntity = listViewHolder.edTextQuantity.getText().toString();
g_quntity = Integer.valueOf(get_quntity);
map.put("" + listViewHolder.tvProductName.getText().toString(), " " + listViewHolder.edTextQuantity.getText().toString());
listViewHolder.tvPrices.setText("" + g_price * g_quntity);
// Log.d("A ", "" + a);
// Toast.makeText(context, "A" + a, Toast.LENGTH_LONG).show();
// Log.d("Position ", "" + position);
// System.out.println(+position + " Values " + map.values());
ShowHashMapValue();
listViewHolder.tvPrices.setText("" + g_price * g_quntity);
}
}
});
listViewHolder.btnMinus.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if (customButtonListener != null) {
customButtonListener.onButtonClickListener(position, listViewHolder.edTextQuantity, -1);
if (quantity.get(position) > 0)
quantity.set(position, quantity.get(position) - 1);
get_price = listViewHolder.tvPrices.getText().toString();
g_minus = Integer.valueOf(get_price);
g_price = Integer.valueOf(static_price[position]);
int minus = g_minus - g_price;
if (minus >= g_price) {
listViewHolder.tvPrices.setText("" + minus);
}
map.put("" + listViewHolder.tvProductName.getText().toString(), " " + listViewHolder.edTextQuantity.getText().toString());
ShowHashMapValue();
}
}
});
listViewHolder.tvProductName.setText(listViewItems[position]);
listViewHolder.tvPrices.setText(prices[position]);
return row;
}
private void ShowHashMapValue() {
/**
* get the Set Of keys from HashMap
*/
Set setOfKeys = map.keySet();
/**
* get the Iterator instance from Set
*/
Iterator iterator = setOfKeys.iterator();
/**
* Loop the iterator until we reach the last element of the HashMap
*/
while (iterator.hasNext()) {
/**
* next() method returns the next key from Iterator instance.
* return type of next() method is Object so we need to do DownCasting to String
*/
String key = (String) iterator.next();
/**
* once we know the 'key', we can get the value from the HashMap
* by calling get() method
*/
String value = map.get(key);
System.out.println("Key: " + key + ", Value: " + value);
}
}
}

In onclick, after you decrement the value call notifyDataSetChanged()
notifyDataSetChanged
but its a costly operation, since it refreshes complete list