Java Android SearchView'de rehber verilerini ListView'da gösterme

package com.yazbozkod.test;



import android.content.Context;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

import android.widget.BaseAdapter;

import android.widget.TextView;



import java.util.List;



public class ContactAdapter extends BaseAdapter {

    private Context context;

    private List<Rehber> contactList;



    public ContactAdapter(Context context, List<Rehber> contactList) {

        this.context = context;

        this.contactList = contactList;

    }



    @Override

    public int getCount() {

        return contactList.size();

    }



    @Override

    public Object getItem(int position) {

        return contactList.get(position);

    }



    @Override

    public long getItemId(int position) {

        return position;

    }



    @Override

    public View getView(int position, View convertView, ViewGroup parent) {

        if (convertView == null) {

            convertView = LayoutInflater.from(context).inflate(android.R.layout.simple_list_item_2, parent, false);

        }



        TextView nameTextView = convertView.findViewById(android.R.id.text1);

        TextView phoneTextView = convertView.findViewById(android.R.id.text2);



        Rehber contact = contactList.get(position);

        nameTextView.setText(contact.getName());

        phoneTextView.setText(contact.getPhoneNumber());



        return convertView;

    }

    public void setContactList(List<Rehber> contactList) {

        this.contactList = contactList;

        notifyDataSetChanged();

    }



}

package com.yazbozkod.test;



import android.content.ContentResolver;

import android.content.pm.PackageManager;

import android.database.Cursor;

import android.os.Bundle;



import androidx.core.content.ContextCompat;

import androidx.fragment.app.Fragment;



import android.provider.ContactsContract;

import android.util.Log;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

import android.widget.ListView;

import android.widget.SearchView;

import android.widget.Toast;



import java.text.Collator;

import java.util.ArrayList;

import java.util.Collections;

import java.util.Comparator;

import java.util.List;

import java.util.Locale;



public class RehberFragment extends Fragment {



    private static final String ARG_PARAM1 = "param1";

    private static final String ARG_PARAM2 = "param2";

    private String mParam1;

    private String mParam2;

    ListView lvRehber;

    SearchView svRehber;

    List<Rehber> contactList;

    ContactAdapter contactAdapter;

    private static final int PERMISSIONS_REQUEST_READ_CONTACTS = 100;



    public RehberFragment() {

    }



    public static RehberFragment newInstance(String param1, String param2) {

        RehberFragment fragment = new RehberFragment();

        Bundle args = new Bundle();

        args.putString(ARG_PARAM1, param1);

        args.putString(ARG_PARAM2, param2);

        fragment.setArguments(args);

        return fragment;

    }



    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        if (getArguments() != null) {

            mParam1 = getArguments().getString(ARG_PARAM1);

            mParam2 = getArguments().getString(ARG_PARAM2);

        }

    }



    @Override

    public View onCreateView(LayoutInflater inflater, ViewGroup container,

                             Bundle savedInstanceState) {

        View rootView = inflater.inflate(R.layout.fragment_rehber, container, false);

        lvRehber = rootView.findViewById(R.id.lvRehber);

        svRehber = rootView.findViewById(R.id.svRehber);

        if (ContextCompat.checkSelfPermission(requireContext(), android.Manifest.permission.READ_CONTACTS) != PackageManager.PERMISSION_GRANTED) {

            requestPermissions(new String[]{android.Manifest.permission.READ_CONTACTS}, PERMISSIONS_REQUEST_READ_CONTACTS);

        } else {

            getContacts();

            setAdapter();

        }

        svRehber.setOnQueryTextListener(new SearchView.OnQueryTextListener() {

            @Override

            public boolean onQueryTextSubmit(String query) {

                return false;

            }



            @Override

            public boolean onQueryTextChange(String newText) {

                // Arama sorgusu değiştikçe verileri filtrele

                filterData(newText);

                return true;

            }

        });

        return rootView;

    }



    private void filterData(String newText) {

        List<Rehber> filteredList = new ArrayList<>();

        Locale currentLocale = Locale.getDefault();

        Collator collator = Collator.getInstance(currentLocale);

        collator.setStrength(Collator.PRIMARY);



        for (Rehber contact : contactList) {

            if (newText.isEmpty() || collator.compare(contact.getName().toLowerCase(currentLocale), newText.toLowerCase(currentLocale)) >= 0) {

                filteredList.add(contact);

            }

        }



        ContactAdapter adapter = (ContactAdapter) lvRehber.getAdapter();

        adapter.setContactList(filteredList);

    }





    //region İzin isteği sonucunu kontrol et

    @Override

    public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {

        if (requestCode == PERMISSIONS_REQUEST_READ_CONTACTS) {

            if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {

                // İzin verildiyse, rehber verilerini al ve ListView'a aktar

                getContacts();

                setAdapter();

            } else {

                // İzin reddedildiyse, kullanıcıya bir geri bildirim gösterilebilir

                Toast.makeText(getContext(), "Rehber izni reddedildi.", Toast.LENGTH_SHORT).show();

            }

        }

    }

    //endregion



    //region setAdapter

    private void setAdapter() {

        Collections.sort(contactList, new Comparator<Rehber>() {

            @Override

            public int compare(Rehber contact1, Rehber contact2) {

                Collator collator = Collator.getInstance(Locale.getDefault());

                // İki Rehber nesnesini karşılaştır ve sıralama yap

                return collator.compare(contact1.getName(), contact2.getName());



            }

        });

        contactAdapter = new ContactAdapter(getContext(), contactList);

        lvRehber.setAdapter(contactAdapter);

    }

    //endregion



    //region Rehber verilerini al

    private void getContacts() {

        contactList = new ArrayList<>();



        ContentResolver contentResolver = requireContext().getContentResolver();

        Cursor cursor = contentResolver.query(ContactsContract.Contacts.CONTENT_URI, null, null, null, null);

        if (cursor != null && cursor.getCount() > 0) {

            while (cursor.moveToNext()) {

                String id = cursor.getString(cursor.getColumnIndexOrThrow(ContactsContract.Contacts._ID));

                String isim = cursor.getString(cursor.getColumnIndexOrThrow(ContactsContract.Contacts.DISPLAY_NAME));



                if (Integer.parseInt(cursor.getString(cursor.getColumnIndexOrThrow(ContactsContract.Contacts.HAS_PHONE_NUMBER))) > 0) {

                    Cursor phoneCursor = contentResolver.query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null,

                            ContactsContract.CommonDataKinds.Phone.CONTACT_ID + " = ?", new String[]{id}, null);

                    if (phoneCursor != null && phoneCursor.moveToNext()) {

                        String numara = phoneCursor.getString(phoneCursor.getColumnIndexOrThrow(ContactsContract.CommonDataKinds.Phone.NUMBER));

                        contactList.add(new Rehber(isim, numara));

                    }

                    if (phoneCursor != null) {

                        phoneCursor.close();

                    }

                }

            }

        }

        if (cursor != null) {

            cursor.close();

        }

    }

    //endregion

}