Fetch All Contact In Android Application Tutorial

Hello friends
today we are going to learn about how to fetch all contact and contact name from android device to over Android application.
without wasting time let's take a look.

first, we need to provide permission in android.

AndroidMainfest.xml

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

MainActivity.java

public class MainActivity extends AppCompatActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        displayContacts();
    }
    private void displayContacts() {

        ContentResolver cr = getContentResolver();
        Cursor cursor = cr.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));
                String name = cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
                if (Integer.parseInt(cursor.getString(
                        cursor.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER))) > 0) {
                    Cursor Cur = cr.query(
                            ContactsContract.CommonDataKinds.Phone.CONTENT_URI,
                            null,
                            ContactsContract.CommonDataKinds.Phone.CONTACT_ID + " = ?",
                            new String[]{id}, null);
                    while (Cur.moveToNext()) {
                        String phoneNomber = Cur.getString(Cur.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
                        Log.w("Contact List", "Name: " + name + ", Phone No: " + phoneNomber);
                    }
                    Cur.close();
                }
            }
        }
    }

}