Android obtener todos los contactos

¿Cómo puedo obtener todos los nombres de los contactos en mi Android y ponerlos en una matriz de cadenas?

Prueba esto también

private void getContactList() {
    ContentResolver cr = getContentResolver();
    Cursor cur = cr.query(ContactsContract.Contacts.CONTENT_URI,
            null, null, null, null);

    if ((cur != null ? cur.getCount() : 0) > 0) {
        while (cur != null && cur.moveToNext()) {
            String id = cur.getString(
                    cur.getColumnIndex(ContactsContract.Contacts._ID));
            String name = cur.getString(cur.getColumnIndex(
                    ContactsContract.Contacts.DISPLAY_NAME));

            if (cur.getInt(cur.getColumnIndex(
                    ContactsContract.Contacts.HAS_PHONE_NUMBER)) > 0) {
                Cursor pCur = cr.query(
                        ContactsContract.CommonDataKinds.Phone.CONTENT_URI,
                        null,
                        ContactsContract.CommonDataKinds.Phone.CONTACT_ID + " = ?",
                        new String[]{id}, null);
                while (pCur.moveToNext()) {
                    String phoneNo = pCur.getString(pCur.getColumnIndex(
                            ContactsContract.CommonDataKinds.Phone.NUMBER));
                    Log.i(TAG, "Name: " + name);
                    Log.i(TAG, "Phone Number: " + phoneNo);
                }
                pCur.close();
            }
        }
    }
    if(cur!=null){
        cur.close();
    }
}

Si necesita más medios de referencia, consulte este enlace Leer ContactList

public class MyActivity extends Activity 
                        implements LoaderManager.LoaderCallbacks<Cursor> {

    private static final int CONTACTS_LOADER_ID = 1;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        // Prepare the loader.  Either re-connect with an existing one,
        // or start a new one.
        getLoaderManager().initLoader(CONTACTS_LOADER_ID,
                                      null,
                                      this);
    }

    @Override
    public Loader<Cursor> onCreateLoader(int id, Bundle args) {
        // This is called when a new Loader needs to be created.

        if (id == CONTACTS_LOADER_ID) {
            return contactsLoader();
        }
        return null;
    }

    @Override
    public void onLoadFinished(Loader<Cursor> loader, Cursor cursor) {
        //The framework will take care of closing the
        // old cursor once we return.
        List<String> contacts = contactsFromCursor(cursor);
    }

    @Override
    public void onLoaderReset(Loader<Cursor> loader) {
        // This is called when the last Cursor provided to onLoadFinished()
        // above is about to be closed.  We need to make sure we are no
        // longer using it.
    }

    private  Loader<Cursor> contactsLoader() {
        Uri contactsUri = ContactsContract.Contacts.CONTENT_URI; // The content URI of the phone contacts

        String[] projection = {                                  // The columns to return for each row
                ContactsContract.Contacts.DISPLAY_NAME
        } ;

        String selection = null;                                 //Selection criteria
        String[] selectionArgs = {};                             //Selection criteria
        String sortOrder = null;                                 //The sort order for the returned rows

        return new CursorLoader(
                getApplicationContext(),
                contactsUri,
                projection,
                selection,
                selectionArgs,
                sortOrder);
    }

    private List<String> contactsFromCursor(Cursor cursor) {
        List<String> contacts = new ArrayList<String>();

        if (cursor.getCount() > 0) {
            cursor.moveToFirst();

            do {
                String name = cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
                contacts.add(name);
            } while (cursor.moveToNext());
        }

        return contacts;
    }

}

y no olvides

<uses-permission android:name="android.permission.READ_CONTACTS" />

Obtenga información de contactos, contactos con fotos, uri de fotos y conviértalos al modelo Class

1). Ejemplo de modelo de clase:

    public class ContactModel {
        public String id;
        public String name;
        public String mobileNumber;
        public Bitmap photo;
        public Uri photoURI;
    }

2). obtener contactos y convertir a modelo

     public List<ContactModel> getContacts(Context ctx) {
        List<ContactModel> list = new ArrayList<>();
        ContentResolver contentResolver = ctx.getContentResolver();
        Cursor cursor = contentResolver.query(ContactsContract.Contacts.CONTENT_URI, null, null, null, null);
        if (cursor.getCount() > 0) {
            while (cursor.moveToNext()) {
                String id = cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts._ID));
                if (cursor.getInt(cursor.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER)) > 0) {
                    Cursor cursorInfo = contentResolver.query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null,
                            ContactsContract.CommonDataKinds.Phone.CONTACT_ID + " = ?", new String[]{id}, null);
                    InputStream inputStream = ContactsContract.Contacts.openContactPhotoInputStream(ctx.getContentResolver(),
                            ContentUris.withAppendedId(ContactsContract.Contacts.CONTENT_URI, new Long(id)));

                    Uri person = ContentUris.withAppendedId(ContactsContract.Contacts.CONTENT_URI, new Long(id));
                    Uri pURI = Uri.withAppendedPath(person, ContactsContract.Contacts.Photo.CONTENT_DIRECTORY);

                    Bitmap photo = null;
                    if (inputStream != null) {
                        photo = BitmapFactory.decodeStream(inputStream);
                    }
                    while (cursorInfo.moveToNext()) {
                        ContactModel info = new ContactModel();
                        info.id = id;
                        info.name = cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
                        info.mobileNumber = cursorInfo.getString(cursorInfo.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
                        info.photo = photo;
                        info.photoURI= pURI;
                        list.add(info);
                    }

                    cursorInfo.close();
                }
            }
            cursor.close();
        }
        return list;
    }

Mejorando la respuesta de @Adiii: limpiará el número de teléfono y eliminará todos los duplicados

Declarar una variable global

// Hash Maps
Map<String, String> namePhoneMap = new HashMap<String, String>();

Luego use la función a continuación

private void getPhoneNumbers() {

        Cursor phones = getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, null, null, null);

        // Loop Through All The Numbers
        while (phones.moveToNext()) {

            String name = phones.getString(phones.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME));
            String phoneNumber = phones.getString(phones.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));

            // Cleanup the phone number
            phoneNumber = phoneNumber.replaceAll("[()\\s-]+", "");

            // Enter Into Hash Map
            namePhoneMap.put(phoneNumber, name);

        }

        // Get The Contents of Hash Map in Log
        for (Map.Entry<String, String> entry : namePhoneMap.entrySet()) {
            String key = entry.getKey();
            Log.d(TAG, "Phone :" + key);
            String value = entry.getValue();
            Log.d(TAG, "Name :" + value);
        }

        phones.close();

    }

Recuerde que en el ejemplo anterior la clave es el número de teléfono y el valor es un nombre, así que lea su contenido como 998xxxxx282-> Mahatma Gandhi en lugar de Mahatma Gandhi-> 998xxxxx282

Cursor contacts = getContentResolver().query(ContactsContract.Contacts.CONTENT_URI, null, null, null, null);
String aNameFromContacts[] = new String[contacts.getCount()];  
String aNumberFromContacts[] = new String[contacts.getCount()];  
int i = 0;

int nameFieldColumnIndex = contacts.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME);
int numberFieldColumnIndex = contacts.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER);

while(contacts.moveToNext()) {

    String contactName = contacts.getString(nameFieldColumnIndex);
    aNameFromContacts[i] =    contactName ; 

    String number = contacts.getString(numberFieldColumnIndex);
    aNumberFromContacts[i] =    number ;
i++;
}

contacts.close();

El resultado será una matriz de NameFromContacts llena de contactos. También asegúrese de haber agregado

<uses-permission android:name="android.permission.READ_CONTACTS" />

en main.xml

Este es el método para obtener el nombre y número de la lista de contactos

 private void getAllContacts() {
    ContentResolver contentResolver = getContentResolver();
    Cursor cursor = contentResolver.query(ContactsContract.Contacts.CONTENT_URI, null, null, null, ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME + " ASC");
    if (cursor.getCount() > 0) {
        while (cursor.moveToNext()) {

            int hasPhoneNumber = Integer.parseInt(cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER)));
            if (hasPhoneNumber > 0) {
                String id = cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts._ID));
                String name = cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
                Cursor phoneCursor = contentResolver.query(
                        ContactsContract.CommonDataKinds.Phone.CONTENT_URI,
                        null,
                        ContactsContract.CommonDataKinds.Phone.CONTACT_ID + " = ?", new String[]{id},
                        null);
                if (phoneCursor != null) {
                    if (phoneCursor.moveToNext()) {
                        String phoneNumber = phoneCursor.getString(phoneCursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));

   //At here You can add phoneNUmber and Name to you listView ,ModelClass,Recyclerview
                        phoneCursor.close();
                    }


                }
            }
        }
    }
}

//GET CONTACTLIST WITH ALL FIELD...       

public ArrayList < ContactItem > getReadContacts() {
         ArrayList < ContactItem > contactList = new ArrayList < > ();
         ContentResolver cr = getContentResolver();
         Cursor mainCursor = cr.query(ContactsContract.Contacts.CONTENT_URI, null, null, null, null);
         if (mainCursor != null) {
          while (mainCursor.moveToNext()) {
           ContactItem contactItem = new ContactItem();
           String id = mainCursor.getString(mainCursor.getColumnIndex(ContactsContract.Contacts._ID));
           String displayName = mainCursor.getString(mainCursor.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));

           Uri contactUri = ContentUris.withAppendedId(ContactsContract.Contacts.CONTENT_URI, Long.parseLong(id));
           Uri displayPhotoUri = Uri.withAppendedPath(contactUri, ContactsContract.Contacts.Photo.DISPLAY_PHOTO);

           //ADD NAME AND CONTACT PHOTO DATA...
           contactItem.setDisplayName(displayName);
           contactItem.setPhotoUrl(displayPhotoUri.toString());

           if (Integer.parseInt(mainCursor.getString(mainCursor.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER))) > 0) {
            //ADD PHONE DATA...
            ArrayList < PhoneContact > arrayListPhone = new ArrayList < > ();
            Cursor phoneCursor = cr.query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, ContactsContract.CommonDataKinds.Phone.CONTACT_ID + " = ?", new String[] {
             id
            }, null);
            if (phoneCursor != null) {
             while (phoneCursor.moveToNext()) {
              PhoneContact phoneContact = new PhoneContact();
              String phone = phoneCursor.getString(phoneCursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
              phoneContact.setPhone(phone);
              arrayListPhone.add(phoneContact);
             }
            }
            if (phoneCursor != null) {
             phoneCursor.close();
            }
            contactItem.setArrayListPhone(arrayListPhone);


            //ADD E-MAIL DATA...
            ArrayList < EmailContact > arrayListEmail = new ArrayList < > ();
            Cursor emailCursor = cr.query(ContactsContract.CommonDataKinds.Email.CONTENT_URI, null, ContactsContract.CommonDataKinds.Email.CONTACT_ID + " = ?", new String[] {
             id
            }, null);
            if (emailCursor != null) {
             while (emailCursor.moveToNext()) {
              EmailContact emailContact = new EmailContact();
              String email = emailCursor.getString(emailCursor.getColumnIndex(ContactsContract.CommonDataKinds.Email.DATA));
              emailContact.setEmail(email);
              arrayListEmail.add(emailContact);
             }
            }
            if (emailCursor != null) {
             emailCursor.close();
            }
            contactItem.setArrayListEmail(arrayListEmail);

            //ADD ADDRESS DATA...
            ArrayList < PostalAddress > arrayListAddress = new ArrayList < > ();
            Cursor addrCursor = getContentResolver().query(ContactsContract.CommonDataKinds.StructuredPostal.CONTENT_URI, null, ContactsContract.CommonDataKinds.StructuredPostal.CONTACT_ID + " = ?", new String[] {
             id
            }, null);
            if (addrCursor != null) {
             while (addrCursor.moveToNext()) {
              PostalAddress postalAddress = new PostalAddress();
              String city = addrCursor.getString(addrCursor.getColumnIndex(ContactsContract.CommonDataKinds.StructuredPostal.CITY));
              String state = addrCursor.getString(addrCursor.getColumnIndex(ContactsContract.CommonDataKinds.StructuredPostal.REGION));
              String country = addrCursor.getString(addrCursor.getColumnIndex(ContactsContract.CommonDataKinds.StructuredPostal.COUNTRY));
              postalAddress.setCity(city);
              postalAddress.setState(state);
              postalAddress.setCountry(country);
              arrayListAddress.add(postalAddress);
             }
            }
            if (addrCursor != null) {
             addrCursor.close();
            }
            contactItem.setArrayListAddress(arrayListAddress);
           }
           contactList.add(contactItem);
          }
         }
         if (mainCursor != null) {
          mainCursor.close();
         }
         return contactList;
        }



    //MODEL...
        public class ContactItem {

            private String displayName;
            private String photoUrl;
            private ArrayList<PhoneContact> arrayListPhone = new ArrayList<>();
            private ArrayList<EmailContact> arrayListEmail = new ArrayList<>();
            private ArrayList<PostalAddress> arrayListAddress = new ArrayList<>();


            public String getDisplayName() {
                return displayName;
            }

            public void setDisplayName(String displayName) {
                this.displayName = displayName;
            }

            public String getPhotoUrl() {
                return photoUrl;
            }

            public void setPhotoUrl(String photoUrl) {
                this.photoUrl = photoUrl;
            }

            public ArrayList<PhoneContact> getArrayListPhone() {
                return arrayListPhone;
            }

            public void setArrayListPhone(ArrayList<PhoneContact> arrayListPhone) {
                this.arrayListPhone = arrayListPhone;
            }

            public ArrayList<EmailContact> getArrayListEmail() {
                return arrayListEmail;
            }

            public void setArrayListEmail(ArrayList<EmailContact> arrayListEmail) {
                this.arrayListEmail = arrayListEmail;
            }

            public ArrayList<PostalAddress> getArrayListAddress() {
                return arrayListAddress;
            }

            public void setArrayListAddress(ArrayList<PostalAddress> arrayListAddress) {
                this.arrayListAddress = arrayListAddress;
            }
        }

        public class EmailContact
        {
            private String email = "";

            public String getEmail() {
                return email;
            }

            public void setEmail(String email) {
                this.email = email;
            }
        }

        public class PhoneContact
        {
            private String phone="";

            public String getPhone()
            {
                return phone;
            }

            public void setPhone(String phone) {
                this.phone = phone;
            }
        }


        public class PostalAddress
        {
            private String city="";
            private String state="";
            private String country="";

            public String getCity() {
                return city;
            }

            public void setCity(String city) {
                this.city = city;
            }

            public String getState() {
                return state;
            }

            public void setState(String state) {
                this.state = state;
            }

            public String getCountry() {
                return country;
            }

            public void setCountry(String country) {
                this.country = country;
            }
        }

Obtén todos los contactos en menos de un segundo y sin ningún tipo de carga en tu actividad - seguir mis pasos funciona a las mil maravillas.

ArrayList<Contact> contactList = new ArrayList<>();

private static final String[] PROJECTION = new String[]{
        ContactsContract.CommonDataKinds.Phone.CONTACT_ID,
        ContactsContract.Contacts.DISPLAY_NAME,
        ContactsContract.CommonDataKinds.Phone.NUMBER
};

private void getContactList() {
    ContentResolver cr = getContentResolver();

    Cursor cursor = cr.query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, PROJECTION, null, null, ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME + " ASC");
    if (cursor != null) {
        HashSet<String> mobileNoSet = new HashSet<String>();
        try {
            final int nameIndex = cursor.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME);
            final int numberIndex = cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER);

            String name, number;
            while (cursor.moveToNext()) {
                name = cursor.getString(nameIndex);
                number = cursor.getString(numberIndex);
                number = number.replace(" ", "");
                if (!mobileNoSet.contains(number)) {
                    contactList.add(new Contact(name, number));
                    mobileNoSet.add(number);
                    Log.d("hvy", "onCreaterrView  Phone Number: name = " + name
                            + " No = " + number);
                }
            }
        } finally {
            cursor.close();
        }
    }
}

Contactos

public class Contact {
public String name;
public String phoneNumber;

public Contact() {
}

public Contact(String name, String phoneNumber ) {
    this.name = name;
    this.phoneNumber = phoneNumber;
}

public String getName() {
    return name;
}

public void setName(String name) {
    this.name = name;
}

public String getPhoneNumber() {
    return phoneNumber;
}

public void setPhoneNumber(String phoneNumber) {
    this.phoneNumber = phoneNumber;
}

}

Beneficios

-less than a second
-without load
-ascending order
-without duplicate contacts