how to show list contact phone in android studio with sdk 27

Question

i have code java android studio to show list contact in hp and it's permission done, but it's not working (blank value) in sdk >27 anyone help me? this is my code

    contactModelArrayList = new ArrayList<>();
    Cursor phones = getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI,
            null,
            ContactsContract.Contacts.IN_VISIBLE_GROUP + " = '1'",
            null,
            ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME+" COLLATE LOCALIZED ASC");
    while (phones.moveToNext())
    {
        String name=phones.getString(phones.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME));
        String phoneNumber = phones.getString(phones.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));

        ContactModel contactModel = new ContactModel();
        contactModel.setName(name);
        contactModel.setNumber(phoneNumber);

        contactModelArrayList.add(contactModel);


        Log.d("name>>",name+" "+phoneNumber);
    }
    Log.d("phones", phones.toString());
    phones.close();

    contactAllAdapter = new ContactAllAdapter(this,contactModelArrayList);
    listView.setAdapter(contactAllAdapter);

in logcat thereis nothing

do you want a list of all **phones** on the device, or all **contacts**? these are two different things, as you might have contacts w/o any phone, or contacts with multiple phones — marmor, Jan 28 '19 at 14:58
sorry for the confusion, i want list all contact in my phone + there is no duplicate contacts @marmor can you help me, please? — Arif MH, Jan 29 '19 at 03:35

score 4 · Answer 1 · edited Jan 29 '19 at 05:41

Create your MyCircleContactListData class like this

public class MyCircleContactListData {
    @SerializedName("name")
    @Expose
    public String name;
    @SerializedName("img_url")
    @Expose
    public String imgUrl;

    @SerializedName("mobile_no")
    @Expose
    public String mobileNumber;
}

And then create Contact Accessing Java Class with Contact list return type method getContacts which returns list of your contacts.

 public class GetContactFromDevice {
    private static final String TAG  = "GetContactFromDevice";

    public ArrayList<MyCircleContactListData> getContacts(Context context) {
        ArrayList<MyCircleContactListData> list = new ArrayList<>();
        ContentResolver contentResolver = context.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(context.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()) {

                        MyCircleContactListData info = new MyCircleContactListData("", "", "", "", false);
                        info.name = cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
                        info.mobileNumber = TextUtils.validatePhoneNumber(cursorInfo.getString(cursorInfo.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER)));
                        info.imgUrl= pURI.toString();
                        list.add(info);

                        Log.d("GetContactFromDevice", "getContacts: " + info.name);
                        Log.d("GetContactFromDevice", "getContacts: " + info.mobileNumber);
                    }

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

}

Don't forget to provide contact access permission

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

Then display your contact list.

GetContactFromDevice getContactFromDevice = new GetContactFromDevice();
contactAllAdapter = new ContactAllAdapter(this,getContactFromDevice.getContacts(this));
listView.setAdapter(contactAllAdapter);

Check number is already exist or not , and if already exist then dont add. If the number is new and then add to the list. `boolean alreadyExist = false;` `int itemPosition = 0;` `for (int i = 0; i < yourList.size(); i++) { itemPosition = i; if (list.get(i).getMobileNumber().equals(info.mobileNumber)) { alreadyExist = true; break; } else { alreadyExist = false; list.add(info) } }` — Samir Dangal, Jan 29 '19 at 06:06

Dhaval · Accepted Answer · 2019-01-29T06:16:46.490

You can try LoaderManager

Create following fields

private static final int CONTACTS_LOADER_ID = 101;

private static final String[] PROJECTION = {
        ContactsContract.Contacts._ID,
        ContactsContract.Contacts.DISPLAY_NAME_PRIMARY,
        ContactsContract.CommonDataKinds.Phone.NUMBER
};

Create follwoing class

public class Contact {

    private String id;
    private String name;
    private String number;

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

    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

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

    public String getNumber() {
        return number;
    }

    public void setNumber(String number) {
        this.number = number;
    }

}

[1] Create instance of LoaderManager.LoaderCallback

private LoaderManager.LoaderCallbacks<Cursor> loaderCallbacks = new LoaderManager.LoaderCallbacks<Cursor>() {
        @Override
        public Loader<Cursor> onCreateLoader(int id, Bundle args) {

            switch (id) {
                case CONTACTS_LOADER_ID:

                    return new CursorLoader(
                            getActivity(),
                            ContactsContract.CommonDataKinds.Phone.CONTENT_URI,
                            PROJECTION,
                            null,
                            null,
                            ContactsContract.Contacts.DISPLAY_NAME_PRIMARY + " ASC"
                    );
                default:
                    return null;
            }
        }

        @Override
        public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
            switch (loader.getId()) {
                case CONTACTS_LOADER_ID:

                   //Use ContactUtils class here


                    break;
            }
        }

        @Override
        public void onLoaderReset(Loader<Cursor> loader) {

        }
    };

[2] Use following class to convert cursor data to List<Contact>

import android.content.ContentResolver;
import android.database.Cursor;
import android.provider.ContactsContract;

import java.util.ArrayList;
import java.util.List;

public class ContactUtils {

    private ContactUtils() {
    }

    public static List<Contact> parseContacts(Cursor cursor) {
        List<Contact> contacts = new ArrayList<>();

        if (cursor.getCount() == 0) {
            return contacts;
        }

        int nameColumnIndex = cursor.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME_PRIMARY);
        int idColumnIndex = cursor.getColumnIndex(ContactsContract.Contacts._ID);
        int numberColumnIndex = cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER);

        while (cursor.moveToNext()) {
            String contactName = cursor.getString(nameColumnIndex);
            String id = cursor.getString(idColumnIndex);
            String number = cursor.getString(numberColumnIndex);

            Contact contact = new Contact(id, contactName, number);
            if(!isContactAddedInList(contact, contacts)){
                contacts.add(contact);
            }

        }

        return contacts;
    }

public boolean isContactAddedInList(Contact contact, List<Contact> contacts) {

    for (Contact listContact : contacts
            ) {
        if (listContact.number.equals(contact.name)) {
            return true;
        }
    }

    return false;
}


}

[3] Call getLoaderManager().initLoader method to load contacts in your Fragment or Activity's onStart method

getLoaderManager().initLoader(CONTACTS_LOADER_ID, null, loaderCallbacks);

Add <uses-permission android:name="android.permission.READ_CONTACTS" /> permission in menifest file
You need to ask for runtime permission before calling getLoaderManager().initLoader

You can add that logic in parseContacts method of ContactUtils class. You can check if the number has already added in contacts(list), then don't add it in list. — Dhaval, Jan 29 '19 at 05:52
can you give me example for that? because I still lack experience for that — Arif MH, Jan 29 '19 at 05:54
I have updated the answer. Please check isContactAddedInList method. — Dhaval, Jan 29 '19 at 06:17
hehehe, thankyou daval for your help. but sorry, I am confused about how to put the correct function, so that my code becomes an error :') — Arif MH, Jan 29 '19 at 06:53
I think you need a full demo of loading contacts and displaying it in RecyclerView. This is out of the scope of this answer but I will post the link of some tutorial if I find any. — Dhaval, Jan 29 '19 at 06:56
You can find the complete example here. It is my github repo of AndroidTutorials. https://github.com/dhavalshah05/AndroidTutorials/blob/master/app/src/main/java/com/itgosolutions/tutorial/contacts/FragmentContacts.java — Dhaval, Jan 29 '19 at 07:11

how to show list contact phone in android studio with sdk 27

2 Answers2