خواندن و مدیریت مخاطبین

// Initial request
ListConnectionsResponse fullSyncResponse = peopleService.people().connections().list("people/me")
    .setPersonFields("metadata,names,emailAddresses")
    .setRequestSyncToken(true)
    .execute();
// Fetch all the pages
while (fullSyncResponse.getNextPageToken() != null) {
  fullSyncResponse = peopleService.people().connections().list("people/me")
      .setPersonFields("metadata,names,emailAddresses")
      .setRequestSyncToken(true)
      .setPageToken(fullSyncResponse.getNextPageToken())
      .execute();
}

// Some time passes

// Fetch incremental changes using the sync token returned in the last fullSyncResponse.
try {
  ListConnectionsResponse incrementalSyncResponse = peopleService.people().connections().list("people/me")
      .setPersonFields("metadata,names,emailAddresses")
      .setSyncToken(fullSyncResponse.getNextSyncToken())
      .execute();
  for (Person person : incrementalSyncResponse.getConnections()) {
    handlePerson(person);
  }

  // Fetch all the pages
  while (incrementalSyncResponse.getNextPageToken() != null) {
    incrementalSyncResponse = peopleService.people().connections().list("people/me")
        .setPersonFields("metadata,names,emailAddresses")
        .setSyncToken(fullSyncResponse.getNextSyncToken())
        .setPageToken(incrementalSyncResponse.getNextPageToken())
        .execute();
    for (Person person : incrementalSyncResponse.getConnections()) {
      handlePerson(person);
    }
  }
} catch (GoogleJsonResponseException e) {
  if (e.getStatusCode() == 410) {
    // Sync token expired. Make full sync request.
  }
}

void handlePerson(Person person) {
  if (person.getMetadata().getDeleted()) {
    // Handle deleted person
  } else {
    // Handle changed person
  }
}