OnSalePage

package com.example.bilkentcompanion;

import android.content.Intent;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.SearchView;
import android.widget.TextView;
import android.widget.Toast;

import com.google.firebase.database.ChildEventListener;
import com.google.firebase.database.DataSnapshot;
import com.google.firebase.database.DatabaseError;
import com.google.firebase.database.DatabaseReference;
import com.google.firebase.database.FirebaseDatabase;
import com.google.firebase.database.ValueEventListener;

import java.text.ParsePosition;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;

public class OnSalePage extends AppCompatActivity {

    TextView title;
    String category;
    int price;
    ListView list;
    ArrayAdapter adapter;
    private String TAG;
    SearchView searchView;
    ArrayList<String> names, description, keys , prices, uids;



    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_on_sale_page);

        Intent intent = getIntent();
        category = intent.getStringExtra("category");
        price = intent.getIntExtra("price", 0);
        Log.i("sell", category + price);

        list = findViewById(R.id.itemsList);

        initialize();

        //make items clickable
        //TODO pass to chat or the item edit page
        list.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                Log.i("uid", uids.get(position));
            }
        });
    }

    private void initialize() {
        names = new ArrayList<>();
        description = new ArrayList<>();
        prices = new ArrayList<>();
        keys = new ArrayList<>();
        uids = new ArrayList<>();

        FirebaseDatabase.getInstance().getReference().child("SellPost")
                .addListenerForSingleValueEvent(new ValueEventListener() {

                    @Override
                    public void onDataChange(DataSnapshot dataSnapshot) {

                        for (DataSnapshot snapshot : dataSnapshot.getChildren()) {

                            if (snapshot.hasChild("category")) {
                                String cat = snapshot.child("category").getValue().toString();
                                Log.i("sell", cat);
                                if (category.equals(cat) || category.equals("all")) {
                                    if (snapshot.hasChild("price")) {
                                        String priceString = snapshot.child("price").getValue().toString();
                                        Log.i("sell", priceString);
                                        int itemPrice = Integer.parseInt(priceString);
                                        Log.i("sell", itemPrice + "");
                                        Log.i("sell", "" + (itemPrice <= price));

                                        if (itemPrice <= price) {
                                            names.add(snapshot.child("name").getValue().toString());
                                            description.add(snapshot.child("tags").getValue().toString());
                                            prices.add(snapshot.child("price").getValue().toString());
                                            keys.add(snapshot.child("key").getValue().toString());
                                            uids.add(snapshot.child("uid").getValue().toString());
                                        }
                                    }
                                }
                            }
                        }
                        Custom custom = new Custom(OnSalePage.this, names, description, prices, uids);
                        list.setAdapter(custom);
                    }


                    @Override
                    public void onCancelled(DatabaseError databaseError) {
                    }
                });
    }


}