Android Firebase Veritabanı CRUD İşlemleri

package com.mobilhanem.androidcrudexample.adapter;

 

import android.app.AlertDialog;

import android.content.Context;

import android.support.v7.widget.RecyclerView;

import android.view.LayoutInflater;

import android.view.MenuItem;

import android.view.View;

import android.view.ViewGroup;

import android.widget.Button;

import android.widget.EditText;

import android.widget.ImageView;

import android.widget.PopupMenu;

import android.widget.Spinner;

import android.widget.TextView;

import android.widget.Toast;

 

import com.google.firebase.database.DatabaseReference;

import com.google.firebase.database.FirebaseDatabase;

import com.mobilhanem.androidcrudexample.ItemClickListener;

import com.mobilhanem.androidcrudexample.R;

import com.mobilhanem.androidcrudexample.model.Customer;

 

import java.util.List;

 

/**

* Created by alper on 23/04/2017.

*/

 

public class CustomerAdapter extends RecyclerView.Adapter<CustomerAdapter.ViewHolder> {

 

    List customerList;

    Context context;

    private ItemClickListener clickListener;

 

    public CustomerAdapter(Context context, List customerList) {

 

        this.customerList = customerList;

        this.context = context;

    }

 

    public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener{

 

        public TextView customerName;

        public TextView customerAddress;

        public ImageView customerPhoto;

        public ImageView optionMenu;

 

 

        public ViewHolder(View view) {

            super(view);

 

            customerName = (TextView)view.findViewById(R.id.customerName);

            customerAddress = (TextView)view.findViewById(R.id.customerAddress);

            customerPhoto = (ImageView)view.findViewById(R.id.customer_photo);

            optionMenu = (ImageView)view.findViewById(R.id.optionMenu);

            view.setTag(view);

            view.setOnClickListener(this);

 

        }

 

        @Override

        public void onClick(View v) {

            if (clickListener != null) clickListener.onClick(v, getAdapterPosition());

        }

    }

 

    @Override

    public CustomerAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {

 

        View itemView = LayoutInflater.from(parent.getContext())

                .inflate(R.layout.customeradapter_item, parent, false);

 

        return new ViewHolder(itemView);

    }

 

    @Override

    public void onBindViewHolder(final ViewHolder holder, final int position) {

 

        holder.customerName.setText(customerList.get(position).getCustomerName());

        holder.customerAddress.setText(customerList.get(position).getCustomerAddress());

        holder.customerPhoto.setImageResource(R.drawable.user);

        holder.optionMenu.setOnClickListener(new View.OnClickListener() {

            @Override

            public void onClick(View v) {

 

                PopupMenu popup = new PopupMenu(context, holder.optionMenu);

                popup.inflate(R.menu.menu_items);

                popup.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {

                    @Override

                    public boolean onMenuItemClick(MenuItem item) {

                        switch (item.getItemId()) {

                            case R.id.edit:

                                //update customer

                                updateCustomer(customerList.get(position));

                                break;

                            case R.id.delete:

                                //delete customer

                                deleteCustomer(customerList.get(position).getCustomerId());

                                break;

                        }

                        return false;

                    }

                });

                //displaying the popup

                popup.show();

 

            }

        });

 

    }

 

    private Customer updateCustomer;

    private void updateCustomer(Customer customer) {

 

        updateCustomer = customer;

        AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(context);

        LayoutInflater inflater = (LayoutInflater) context.getSystemService( Context.LAYOUT_INFLATER_SERVICE);

        final View dialogView = inflater.inflate(R.layout.update_dialog, null);

        dialogBuilder.setView(dialogView);

 

        final EditText editTextName = (EditText) dialogView.findViewById(R.id.editTextName);

        final Spinner spinnerUpdate = (Spinner) dialogView.findViewById(R.id.spinnerUpdate);

        final Button buttonUpdate = (Button) dialogView.findViewById(R.id.buttonUpdateCustomer);

 

        editTextName.setText(updateCustomer.getCustomerName());

 

        dialogBuilder.setTitle(“Müşteri Düzenleme”);

        final AlertDialog b = dialogBuilder.create();

        b.show();

 

        buttonUpdate.setOnClickListener(new View.OnClickListener() {

            @Override

            public void onClick(View v) {

 

                if(editTextName.getText().length()>0){

 

                    DatabaseReference dR = FirebaseDatabase.getInstance().getReference(“customers”).child(updateCustomer.getCustomerId());

                    Customer customer = new Customer(updateCustomer.getCustomerId(),editTextName.getText().toString(),spinnerUpdate.getSelectedItem().toString());

                    dR.setValue(customer);

                    b.dismiss();

                    Toast.makeText(context, “Müşteri Güncellendi”, Toast.LENGTH_SHORT).show();

                }

            }

        });

    }

 

    private void deleteCustomer(String id) {

 

        DatabaseReference dR = FirebaseDatabase.getInstance().getReference(“customers”).child(id);

        dR.removeValue();

        DatabaseReference drOrders = FirebaseDatabase.getInstance().getReference(“orders”).child(id);

        drOrders.removeValue();

        Toast.makeText(context ,“Müşteri Silindi”, Toast.LENGTH_SHORT).show();

    }

 

    public void setClickListener(ItemClickListener itemClickListener) {

        this.clickListener = itemClickListener;

    }

 

    @Override

    public int getItemCount() {

        return customerList.size();

    }

}