repositories {  
    maven { url 'https://jitpack.io' }
}

implementation 'com.github.lostankit7:multipleContactPicker:v1.1'

<lostankit7.android.contactlist.view.ContactsListView
        android:id="@+id/contactsView"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

  contactsView.loadContacts() //refresh the view or retrieve and load contacts again
  
  contactsView.contactSelectedListener = { contact, contactsSelectedCount -> 
    //do your stuff here
  }
  
  contactsView.selectedContactsList //returns list of selected contacts