我正在开发一个应用程序,我需要从设备中获取所有联系人,然后按下按钮将其设置为收藏联系人。我可以在iOS 9和10中使用[CNContact]
获取所有联系人。但不知道如何将其设置为最喜欢的联系人。
我们可以将CNContact设置为最喜欢的联系人吗? 我们可以在CNContact中进行更改吗?
答案 0 :(得分:1)
您可以将收藏夹存储到Realm DB。像这样,
class FavouriteList: Object {
let favouriteList : List<FavouriteContact> = List<FavouriteContact>()
}
class FavouriteContact: Object {
dynamic var identifier : String? = ""
override class func primaryKey() -> String? {
return "identifier"
}
}
// Add Favourite Contact in Realm
class func add(identifier: String) -> Bool {
var realm: Realm!
do {
realm = try Realm()
realm.beginWrite()
} catch {
print(error.localizedDescription)
}
let realmTask: FavouriteList= FavouriteList()
let favContact: FavouriteContact = FavouriteContact()
// Check ID Exist or Not
let idExists: FavouriteContact? = realm.object(ofType: FavouriteContact.self, forPrimaryKey: identifier)
if idExists?.identifier != nil {
realm.cancelWrite()
return false
} else {
favContact.identifier = identifier
realmTask.favouriteList.append(favContact)
realm.add(realmTask)
}
// Realm Commit
do {
try realm.commitWrite()
} catch {
print("Realm Task Write Error : ", error.localizedDescription)
}
return true
}
// Remove Favourite Contact
class func remove(identifier: String) -> Bool {
var realm: Realm!
do {
realm = try Realm()
realm.beginWrite()
} catch {
print(error.localizedDescription)
}
// Check ID Exist or Not
let idExists: FavouriteContact? = realm.object(ofType: FavouriteContact.self, forPrimaryKey: identifier)
if idExists?.identifier != nil {
realm.delete(idExists!)
} else {
realm.cancelWrite()
return false
}
// Realm Commit
do {
try realm.commitWrite()
} catch {
print("Realm Task Write Error : ", error.localizedDescription)
}
return true
}
// Get Favourite List
class func get(completionHandler: @escaping (_ result: [CNContact]) -> ()) {
var favourites: [CNContact] = [CNContact]()
do {
let realm = try Realm()
let dataRealmContacts: Results<FavouriteList> = realm.objects(FavouriteList.self)
for item in dataRealmContacts {
for contactID in item.favouriteList {
if contactID.identifier != nil {
favourites.append(getContactFromID(identifier: contactID.identifier!))
}
}
}
completionHandler(favourites)
} catch {
print(error.localizedDescription)
completionHandler(favourites)
}
}