/// <summary>
/// Load contacts asynchronously, fact reading method of address book.
/// </summary>
/// <returns></returns>
async Task <IList <Contact> > LoadContactsAsync()
{
IList <Contact> contacts = new List <Contact>();
var hasPermission = await RequestPermissionAsync();
if (hasPermission)
{
NSError error = null;
var keysToFetch = new[] { CNContactKey.PhoneNumbers, CNContactKey.GivenName, CNContactKey.FamilyName, CNContactKey.EmailAddresses, CNContactKey.ImageDataAvailable, CNContactKey.ThumbnailImageData };
var request = new CNContactFetchRequest(keysToFetch: keysToFetch);
request.SortOrder = CNContactSortOrder.GivenName;
using (var store = new CNContactStore())
{
var result = store.EnumerateContacts(request, out error, new CNContactStoreListContactsHandler((CNContact c, ref bool stop) =>
{
string path = null;
if (c.ImageDataAvailable)
{
path = path = Path.Combine(Path.GetTempPath(), $"{ThumbnailPrefix}-{Guid.NewGuid()}");
if (!File.Exists(path))
{
var imageData = c.ThumbnailImageData;
imageData?.Save(path, true);
}
}
var contact = new Contact()
{
Name = string.IsNullOrEmpty(c.FamilyName) ? c.GivenName : $"{c.GivenName} {c.FamilyName}",
Image = path,
PhoneNumbers = c.PhoneNumbers?.Select(p => p?.Value?.StringValue).ToArray(),
Emails = c.EmailAddresses?.Select(p => p?.Value?.ToString()).ToArray(),
};
if (!string.IsNullOrWhiteSpace(contact.Name))
{
OnContactLoaded?.Invoke(this, new ContactEventArgs(contact));
contacts.Add(contact);
}
stop = requestStop;
}));
}
}
return(contacts);
}
/// <summary>
/// Load contacts asynchronously, fact reading method of address book.
/// </summary>
/// <returns></returns>
async Task <IList <Contact> > LoadContactsAsync()
{
IList <Contact> contacts = new List <Contact>();
var hasPermission = await RequestPermissionAsync();
if (!hasPermission)
{
return(contacts);
}
var uri = ContactsContract.Contacts.ContentUri;
var ctx = Application.Context;
await Task.Run(() =>
{
// Only Contact ID, DisplayName and PhotoThumbnailUri are requested temporarily, which can be extended
var cursor = ctx.ApplicationContext.ContentResolver.Query(uri, new string[]
{
ContactsContract.Contacts.InterfaceConsts.Id,
ContactsContract.Contacts.InterfaceConsts.DisplayName,
ContactsContract.Contacts.InterfaceConsts.PhotoThumbnailUri
}, null, null, $"{ContactsContract.Contacts.InterfaceConsts.DisplayName} ASC");
if (cursor.Count > 0)
{
while (cursor.MoveToNext())
{
var contact = CreateContact(cursor, ctx);
if (!string.IsNullOrWhiteSpace(contact.Name))
{
// Read out a contact record, notify the shared library.
OnContactLoaded?.Invoke(this, new ContactEventArgs(contact));
contacts.Add(contact);
}
if (stopLoad)
{
break;
}
}
}
});
return(contacts);
}
async Task <IList <ContactModel> > LoadContactsAsync()
{
IList <ContactModel> contacts = new List <ContactModel>();
var hasPermission = await RequestPermissionAsync();
if (hasPermission)
{
var uri = ContactsContract.Contacts.ContentUri;
var ctx = Application.Context;
await Task.Run(() =>
{
var cursor = ctx.ApplicationContext.ContentResolver.Query(uri, new string[]
{
ContactsContract.Contacts.InterfaceConsts.Id,
ContactsContract.Contacts.InterfaceConsts.DisplayName,
ContactsContract.Contacts.InterfaceConsts.PhotoThumbnailUri
}, null, null, $"{ContactsContract.Contacts.InterfaceConsts.DisplayName} ASC");
if (cursor.Count > 0)
{
while (cursor.MoveToNext())
{
var contact = CreateContact(cursor, ctx);
if (!string.IsNullOrWhiteSpace(contact.Name))
{
OnContactLoaded?.Invoke(this, new ContactEventArgs(contact));
contacts.Add(contact);
}
if (stopLoad)
{
break;
}
}
}
});
}
return(contacts);
}
async Task ReadContactsAsync()
{
var uri = ContactsContract.CommonDataKinds.Phone.ContentUri;
string[] projection =
{
ContactsContract.Contacts.InterfaceConsts.Id,
ContactsContract.Contacts.InterfaceConsts.DisplayName,
ContactsContract.CommonDataKinds.Phone.Number
};
await Task.Run(() =>
{
var cursor = Application.Context.ContentResolver.Query(uri, projection, null, null, null);
if (cursor.MoveToFirst())
{
do
{
var contact = new Contact();
contact.Id = cursor.GetString(cursor.GetColumnIndex(projection[0]));
contact.Name = cursor.GetString(cursor.GetColumnIndex(projection[1]));
var number = cursor.GetString(cursor.GetColumnIndex(projection[2]));
number = number.Replace(" ", "").Replace("(", "").Replace(")", "").Replace("-", "");
number = Regex.Replace(number, @".{1,}(?=\d{10}$)", string.Empty);
contact.PhoneNumber = number;
if (number.Length == 10)
{
OnContactLoaded?.Invoke(this, new ContactEventArgs(contact));
}
if (stopLoad)
{
break;
}
} while (cursor.MoveToNext());
}
});
}