How do I know if user remove my custom keyboard from iPhone settings.
I have to manage some user default value after my keyboard has been removed.
static func isKeyboardInstalled() -> Bool {
var isInstalled = false
if let dict: AnyObject = NSUserDefaults.standardUserDefaults().dictionaryRepresentation() {
let userDefaultsDictionary: Dictionary<String, AnyObject> = dict as! Dictionary<String, AnyObject>
let keyboardArrayAnyObject: AnyObject? = userDefaultsDictionary["AppleKeyboards"]
if let array: AnyObject = keyboardArrayAnyObject {
let keyboardsArray: Array<String> = array as! Array<String>
let appUrlSceme: String? = SystemUtils.applicationIdentifier()
if let urlScheme = appUrlSceme {
for item in keyboardsArray {
if (item as NSString).containsString(urlScheme) {
isInstalled = true
}
}
}
}
}
return isInstalled
}
static func applicationIdentifier() -> String? {
var appIdentifier: String? = nil
if let identifier = NSBundle.mainBundle().objectForInfoDictionaryKey(kCFBundleIdentifierKey as String) as? String {
appIdentifier = identifier
}
return appIdentifier
}
Related
First, I'm extracting the content from the text fields into a dictionary:
var dict: [String: String] = [:]
for metricPair in metricStackView.arrangedSubviews {
if metricPair.subviews[0] is UITextField {
let unitTextField = metricPair.subviews[0] as! UITextField
let valueTextField = metricPair.subviews[1] as! UITextField
if let textContent = unitTextField.text, let valueTextContent = valueTextField.text {
let trimmedKey = textContent.trimmingCharacters(in: .whitespacesAndNewlines)
let trimmedValue = valueTextContent.trimmingCharacters(in: .whitespacesAndNewlines)
dict.updateValue(trimmedValue, forKey: trimmedKey)
}
}
}
And I'm saving it to Core Data:
let goal = Goal(context: self.context)
goal.date = Date()
for item in dict {
goal.metrics?.append(item.key)
}
goal.progress.insert(progress)
My managed object looks like this:
extension Goal {
#nonobjc public class func createFetchRequest() -> NSFetchRequest<Goal> {
return NSFetchRequest<Goal>(entityName: "Goal")
}
#NSManaged public var date: Date
#NSManaged public var metrics: [String]?
#NSManaged public var progress: Set<Progress>
}
I keep getting nil for the metrics property of [String] type even before the context is saved. When I log item.key in:
for item in dict {
goal.metrics?.append(item.key)
}
the content is showing up properly.
As far as I can tell from the above code, metrics array is not initialized.
Try replacing this line:
goal.metrics?.append(item.key)
With these lines:
if case nil = goal.metrics?.append(item.key) {
goal.metrics = [item.key]
}
or with simply these lines:
if goal.metrics == nil {
goal.metrics = []
}
goal.metrics?.append(item.key)
I have two Realm tables declared:
class Task: Object {
dynamic var taskID: String = ""
let taskAssignedTo = List<Contacts>()
}
class Contacts: Object {
dynamic var contactEmail: String = ""
dynamic var contactName: String = ""
}
Final goal is to convert the Task Realm object into JSON. The method I'm thinking of is:
Convert the object to a dictionary using a method within the class
func taskToDictionary() -> [String: AnyObject] {
return [
"taskID" : self.taskID,
"taskAssignedTo" : self.taskAssignedTo._rlmArray.count //Not sure how to get the array
]
}
Convert the resulting dictionary into JSON with SwiftyJSON
let taskObject = Task()
let newTaskJSON = JSON(taskObject.taskToDictionary())
Right now, this converts ok, but:
Is there a better way to do this?
How can I convert the RLMArray into an array for JSON conversion?
Managed to find the answer here:
Can I serialize a RealmObject to JSON or to NSDictionary in Realm for Swift?
extension Object {
func toDictionary() -> NSDictionary {
let properties = self.objectSchema.properties.map { $0.name }
let dictionary = self.dictionaryWithValuesForKeys(properties)
var mutabledic = NSMutableDictionary()
mutabledic.setValuesForKeysWithDictionary(dictionary)
for prop in self.objectSchema.properties as [Property]! {
// find lists
if let objectClassName = prop.objectClassName {
if let nestedObject = self[prop.name] as? Object {
mutabledic.setValue(nestedObject.toDictionary(), forKey: prop.name)
} else if let nestedListObject = self[prop.name] as? ListBase {
var objects = [AnyObject]()
for index in 0..<nestedListObject._rlmArray.count {
if let object = nestedListObject._rlmArray[index] as? Object {
objects.append(object.toDictionary())
}
}
mutabledic.setObject(objects, forKey: prop.name)
}
}
}
return mutabledic
}
}
Update for Xcode 7 & Swift 2:
extension Object {
func toDictionary() -> NSDictionary {
let properties = self.objectSchema.properties.map { $0.name }
let dictionary = self.dictionaryWithValuesForKeys(properties)
let mutabledic = NSMutableDictionary()
mutabledic.setValuesForKeysWithDictionary(dictionary)
for prop in self.objectSchema.properties as [Property]! {
// find lists
if let nestedObject = self[prop.name] as? Object {
mutabledic.setValue(nestedObject.toDictionary(), forKey: prop.name)
} else if let nestedListObject = self[prop.name] as? ListBase {
var objects = [AnyObject]()
for index in 0..<nestedListObject._rlmArray.count {
let object = nestedListObject._rlmArray[index] as AnyObject
objects.append(object.toDictionary())
}
mutabledic.setObject(objects, forKey: prop.name)
}
}
return mutabledic
}
}
Update to Xcode 8 and Swift 3 :
extension Object {
func toDictionary() -> NSDictionary {
let properties = self.objectSchema.properties.map { $0.name }
let dictionary = self.dictionaryWithValues(forKeys: properties)
let mutabledic = NSMutableDictionary()
mutabledic.setValuesForKeys(dictionary)
for prop in self.objectSchema.properties as [Property]! {
// find lists
if let nestedObject = self[prop.name] as? Object {
mutabledic.setValue(nestedObject.toDictionary(), forKey: prop.name)
} else if let nestedListObject = self[prop.name] as? ListBase {
var objects = [AnyObject]()
for index in 0..<nestedListObject._rlmArray.count {
let object = nestedListObject._rlmArray[index] as AnyObject
objects.append(object.toDictionary())
}
mutabledic.setObject(objects, forKey: prop.name as NSCopying)
}
}
return mutabledic
}
}
As i can't comment, #Eric
Based on #Eugene Teh answer
I had to do a specific treatment for date. Here is my code (swift 3)
I get the value first
if let value = self.value(forKey: props.name) {
if props.type == .date {
mutabledic[props.name] = (value as! Date).timeIntervalSince1970
//for using like the example, this should work
//mutabledic.setObject( (value as! Date).timeIntervalSince1970, forKey: prop.name as NSCopying)
}
[..]//other case
}
Swift 4.2 Xcode 11
This is how i solved the issue. To covert Realm Objects into JSON Array for sending to the Rest APIs
Requirement - SwiftyJSON
func getJsonArray(){
var dicArray = [Dictionary<String,AnyObject>]()
for item in cartsData! {
dicArray.append(item.toDictionary())
}
print(JSON(dicArray))
}
cartsData - var cartsData : Results<...>?
extension Object {
func toDictionary() -> [String:AnyObject] {
let properties = self.objectSchema.properties.map { $0.name }
var dicProps = [String:AnyObject]()
for (key, value) in self.dictionaryWithValues(forKeys: properties) {
//key = key.uppercased()
if let value = value as? ListBase {
dicProps[key] = value.toArray1() as AnyObject
} else if let value = value as? Object {
dicProps[key] = value.toDictionary() as AnyObject
} else {
dicProps[key] = value as AnyObject
}
}
return dicProps
}
}
extension ListBase {
func toArray1() -> [AnyObject] {
var _toArray = [AnyObject]()
for i in 0..<self._rlmArray.count {
let obj = unsafeBitCast(self._rlmArray[i], to: Object.self)
_toArray.append(obj.toDictionary() as AnyObject)
}
return _toArray
}
}
So I have a section in my app which displays events that your followers are going to. I successfully pull the followers and there corresponding events. I then add those events to a bigger array of event objects. I am currently having trouble removing the duplicates I have tried many extensions but it doesn't seem to be working. I figure it is because the array contains different objects with different memory addresses so when I compare them they aren't the same regardless of the fact that the content is. I have been messing with this for a while now and can't really figure anything out. if anyone could help me I would appreciate it.
This is the method grabs the events and returns them to an array in my main VC.
static func showFollowingEvent(for followerKey: String,completion: #escaping (Event) -> Void) {
//getting firebase root directory
let ref = Database.database().reference()
ref.child("users").child(followerKey).child("Attending").observeSingleEvent(of: .value, with: { (attendingSnapshot) in
print(attendingSnapshot)
guard var eventKeys = attendingSnapshot.children.allObjects as? [DataSnapshot] else{return}
for event in eventKeys{
let dispatchGroup = DispatchGroup()
dispatchGroup.enter()
EventService.show(forEventKey: event.key, completion: { (event) in
dispatchGroup.leave()
completion(event!)
})
}
}) { (err) in
print("couldn't grab event info",err)
}
} print("couldn't grab event info",err)
}
}
This is the function that receives the events and reloads the collectionView upon getting them.
#objc func grabFriendsEvents(){
print("Attempting to see where your friends are going")
UserService.following { (user) in
for following in user {
print(following.username as Any)
PostService.showFollowingEvent(for: following.uid, completion: { (event) in
self.friendsEvents.append(event)
// self.friendsEvents.append(contentsOf: event)
// leave here
self.allEvents2["Friends Events"] = self.friendsEvents.removeDuplicates()
self.collectionView?.reloadData()
})
}
}
}
I tried these extensions which I saw in previous questions and nothing worked.
extension Array where Element: Equatable {
func removeDuplicates() -> [Element] {
var result = [Element]()
for value in self {
if result.contains(value) == false {
result.append(value)
}
}
return result
}
mutating func removeDuplicatesTwo() {
var result = [Element]()
for value in self {
if !result.contains(value) {
result.append(value)
}
}
self = result
}
}
import Foundation
import FirebaseDatabase.FIRDataSnapshot
#objc(Event)
class Event:NSObject{
var key: String?
let currentEventName: String
let currentEventImage: String
let currentEventPromo: String?
let currentEventDescription: String
//nested properties
let currentEventStreetAddress: String
let currentEventCity: String
let currentEventState: String
let currentEventDate: String?
let currentEventEndDate: String?
let currentEventTime: String?
let currentEventEndTime: String?
let currentEventZip: Int
var category: String
//nested properties stop
var currentAttendCount: Int
var isAttending = false
var eventDictionary: [String: Any]{
let dateDict = ["start:date":currentEventDate, "start:time": currentEventTime,"end:time":currentEventEndTime, "end:date": currentEventEndDate]
return ["event:name":currentEventName,"event:imageURL" : currentEventImage,
"event:description": currentEventDescription, "attend:count": currentAttendCount,
"event:street:address": currentEventStreetAddress,"event:zip": currentEventZip,
"event:state": currentEventState, "event:city": currentEventCity, "event:promo": currentEventPromo ?? "", "event:date": dateDict, "event:category":category]
}
init(currentEventKey: String, dictionary: [String:Any]) {
self.key = currentEventKey
self.currentEventName = dictionary["event:name"] as? String ?? ""
self.currentEventImage = dictionary["event:imageURL"] as? String ?? ""
self.currentEventDescription = dictionary["event:description"] as? String ?? ""
self.currentEventPromo = dictionary["event:promo"] as? String ?? ""
self.currentAttendCount = dictionary["attend:count"] as? Int ?? 0
self.category = dictionary["event:category"] as? String ?? ""
//nested properties
self.currentEventStreetAddress = dictionary["event:street:address"] as? String ?? ""
self.currentEventCity = dictionary["event:city"] as? String ?? ""
self.currentEventState = dictionary["event:state"] as? String ?? ""
self.currentEventZip = dictionary["event:zip"] as? Int ?? 0
let eventDate = dictionary["event:date"] as? [String: Any]
self.currentEventDate = eventDate?["start:date"] as? String ?? ""
self.currentEventTime = eventDate?["start:time"] as? String ?? ""
self.currentEventEndTime = eventDate?["end:time"] as? String ?? ""
self.currentEventEndDate = eventDate?["end:date"] as? String ?? ""
}
init?(snapshot: DataSnapshot) {
guard let dict = snapshot.value as? [String : Any],
let currentEventName = dict["event:name"] as? String,
let currentEventImage = dict["event:imageURL"] as? String,
let currentEventDescription = dict["event:description"] as? String,
let currentEventPromo = dict["event:promo"] as? String,
let category = dict["event:category"] as? String,
let currentEventStreetAddress = dict["event:street:address"] as? String,
let currentEventCity = dict["event:city"] as? String,
let currentEventState = dict["event:state"] as? String,
let currentEventZip = dict["event:zip"] as? Int,
let currentAttendCount = dict["attend:count"] as? Int,
let eventDate = dict["event:date"] as? [String: Any],
let currentEventDate = eventDate["start:date"] as? String,
let currentEventEndDate = eventDate["end:date"] as? String,
let currentEventTime = eventDate["start:time"] as? String,
let currentEventEndTime = eventDate["end:time"] as? String
else { return nil }
self.key = snapshot.key
self.currentEventName = currentEventName
self.currentEventImage = currentEventImage
self.currentEventDescription = currentEventDescription
self.currentEventStreetAddress = currentEventStreetAddress
self.currentEventCity = currentEventCity
self.currentEventState = currentEventState
self.currentEventZip = currentEventZip
self.currentAttendCount = currentAttendCount
self.currentEventPromo = currentEventPromo
self.currentEventDate = currentEventDate
self.currentEventTime = currentEventTime
self.currentEventEndTime = currentEventEndTime
self.category = category
self.currentEventEndDate = currentEventEndDate
}
static func ==(lhs: Event, rhs: Event) -> Bool {
return lhs.key == rhs.key
}
}
Classes of type NSObject will automatically call isEqual() for the contains() method. You can override the superclass's implementation to fit your logic.
If your class HAS to inherit NSObject, then use:
class Event: NSObject {
var key: String?
init(key: String) {
self.key = key
}
override func isEqual(_ object: Any?) -> Bool {
guard let event = object as? Event else { return false }
return self.key == event.key
}
}
var event = Event(key: "abc")
var eventCopy = Event(key: "abc")
extension Array where Element:Equatable {
func removeDuplicates() -> [Element] {
return reduce(into: []) { result, element in
if !result.contains(element) {
result.append(element)
}
}
}
}
var events = [event, eventCopy]
events = events.removeDuplicates()
print(events.count)
If your class does not inherit NSObject, make it conform to the Equatable protocol.
class Event: Equatable {
var key: String?
init(key: String) {
self.key = key
}
static func ==(lhs: Event, rhs: Event) -> Bool {
return lhs.key == rhs.key
}
}
var event = Event(key: "abc")
var eventCopy = Event(key: "abc")
extension Array where Element:Equatable {
func removeDuplicates() -> [Element] {
var result = [Element]()
for value in self {
if result.contains(value) == false {
result.append(value)
}
}
return result
}
}
var events = [event, eventCopy]
events = events.removeDuplicates()
print(events.count)
You have to make Event class conform to Equatable protocol
I am currently trying to load data from Parse (which I realize will soon be obselete but I have to stay on it for now) and I have a custom class that is to handle all the data from the backend like so:
import Foundation
import Parse
class FeedContent: PFObject {
#NSManaged var address: String
#NSManaged var content: PFFile
#NSManaged var isVideo: Int
#NSManaged var attendeeObjectId: String
#NSManaged var created: NSDate?
#NSManaged var objId: String
init(address: String, content: PFFile, isVideo: Int, attendeeObjectId: String, created: NSDate?, objId: String) {
super.init()
self.address = address
self.content = content
self.isVideo = isVideo
self.attendeeObjectId = attendeeObjectId
self.created = createdAt
self.objId = objId
}
override init() {
super.init()
}
}
extension FeedContent: PFSubclassing {
class func parseClassName() -> String {
return "FeedContent"
}
override class func initialize() {
var onceToken: dispatch_once_t = 0
dispatch_once(&onceToken) {
self.registerSubclass()
}
}
}
and in my Display View Controller I am creating an array to house these items then calling a function to display the data , like here:
func addPFObjectInFeedContent(object : PFObject) {
let newItem = FeedContent()
newItem.address = (object["address"] as? String)!
newItem.isVideo = (object["isVideo"] as? Int)!
newItem.attendeeObjectId = (object["attendeeObjectId"] as? String)!
//newItem.eventObjectId = (object["eventObjectId"] as? String)!
newItem.content = (object["content"] as? PFFile)!
newItem.created = object.createdAt
newItem.objId = object.objectId!
self.feedContentItems.append(newItem)
}
Here is the array as well:
var feedContentItems = [FeedContent]()
On this line specifically is where the EXC_Breakpoint error occurs:
newItem.isVideo = (object["isVideo"] as? Int)!
so i was curious if anyone had any intimation of what may be happening?
func loadParseFeed() {
let contentQuery = PFQuery(className: "FeedContent")
contentQuery.whereKey("address", equalTo: defaults.objectForKey("newLocation")! as! String)
//contentQuery.whereKey("flagged", notEqualTo: true)
contentQuery.orderByDescending("createdAt")
if blacklist.count != 0 {
for var item = 0; item <= blacklist.count; item += 1 {
contentQuery.whereKey("attendeeObjectId", equalTo: blacklist[item])
}
}
contentQuery.findObjectsInBackgroundWithBlock({ (objects:[PFObject]?,error: NSError?) -> Void in
if error == nil {
if let object = objects as [PFObject]? {
if objects!.count > 0 {
for thing in objects! {
// let newItem = FeedContent()
// newItem.isVideo = (thing["isVideo"] as? Int)!
// newItem.attendeeObjectId = (thing["attendeeObjectId"] as? String)!
// newItem.eventObjectId = (thing["eventObjectId"] as? String)!
// newItem.content = (thing["content"] as? PFFile)!
// newItem.created = thing.createdAt
// newItem.objId = thing.objectId!
// self.feedContentItems.append(newItem)
self.addPFObjectInFeedContent(thing)
}
self.advanceFeed()
// self.overviewTimer = NSTimer.scheduledTimerWithTimeInterval(5.0, target: self, selector: "advanceFeed", userInfo: nil, repeats: true)
// self.overviewTimer.fire()
}
}
}
})
}
I want to save the response from JSON in a file and fetch from it when the network is not available. However on trying to fetch idea by disabling the wifi, the app always crashes. Are there any other ways for offline fetching in swift except saving in database??
This is the error I am getting : Could not cast value of type 'Swift._NSContiguousString' (0x109e22320) to 'NSArray'
This is what I have done so far:
Create a model
class Directory : NSObject, NSCoding {
var data : [AnyObject]
var tid : String
var vid : String
var name : String
var imgThumbnail : String
var imgMedium : String
var imgLarge : String
var child : String
// MARK: Archiving Paths
init(data:[AnyObject],tid:String,vid:String,name:String,imgThumbnail:String,imgMedium:String,imgLarge:String,child:String) {
self.data = data ?? []
self.tid = tid ?? ""
self.vid = vid ?? ""
self.name = name ?? ""
self.imgThumbnail = imgThumbnail ?? ""
self.imgMedium = imgMedium ?? ""
self.imgLarge = imgLarge ?? ""
self.child = child ?? ""
}
// MARK: NSCoding
func encodeWithCoder(aCoder: NSCoder) {
aCoder.encodeObject(data, forKey:Constants.kData)
aCoder.encodeObject(name, forKey:Constants.Directory.kName )
aCoder.encodeObject(tid, forKey: Constants.Directory.tid)
aCoder.encodeObject(vid, forKey: Constants.Directory.vid)
aCoder.encodeObject(imgThumbnail, forKey:Constants.Directory.kImageThumbnail)
aCoder.encodeObject(imgMedium, forKey: Constants.Directory.kImageMedium)
aCoder.encodeObject(imgLarge, forKey: Constants.Directory.kImageLarge)
aCoder.encodeObject(child, forKey: Constants.Directory.kChild)
}
required convenience init?(coder aDecoder: NSCoder) {
let data = aDecoder.decodeObjectForKey(Constants.kData) as! [AnyObject]
let name = aDecoder.decodeObjectForKey(Constants.Directory.kName) as! String
let tid = aDecoder.decodeObjectForKey(Constants.Directory.tid) as! String
let vid = aDecoder.decodeObjectForKey(Constants.Directory.vid) as! String
let imgThumbnail = aDecoder.decodeObjectForKey(Constants.Directory.kImageThumbnail) as! String
let imgMedium = aDecoder.decodeObjectForKey(Constants.Directory.kImageMedium) as! String
let imgLarge = aDecoder.decodeObjectForKey(Constants.Directory.kImageLarge) as! String
let child = aDecoder.decodeObjectForKey(Constants.Directory.kChild) as! String
// Must call designated initializer.
self.init(data:data,tid:tid,vid:vid,name:name,imgThumbnail:imgThumbnail,imgMedium: imgMedium,imgLarge: imgLarge, child: child)
}
}
Code for saving and loading the data from file
class func loadSavedFile(fileName: String) -> AnyObject? {
let pathString: String = Utility.fetchFilePathString(fileName)
print("Here the pathString is \(pathString)")
if NSFileManager.defaultManager().fileExistsAtPath(pathString) {
return NSKeyedUnarchiver.unarchiveObjectWithFile(pathString)!
} else {
return "File doesn't exist"
}
return ""
}
class func saveObject(object: AnyObject, toFile fileName: String) {
let pathString: String = Utility.fetchFilePathString(fileName)
NSKeyedArchiver.archiveRootObject(object, toFile: pathString)
}
class func fetchFilePathString(fileName: String) -> String {
let pathAray: [AnyObject] = NSSearchPathForDirectoriesInDomains(.DocumentDirectory,.AllDomainsMask, true)
let pathString = pathAray.last!
return NSURL(fileURLWithPath: pathString as! String).URLByAppendingPathComponent(fileName).absoluteString
}
Checking for network connection in the view controller
var directoryArr = [Directory]()
override func viewDidLoad() {
super.viewDidLoad()
if Utility.isNetworkReachable() {
Utility.saveObject([], toFile: Constants.File.kDirectory)
self.serviceCallDirectory()
} else {
self.directorie = (Utility.loadSavedFile(Constants.File.kDirectory) as? [Directory])!
self.tableView.reloadData()
}
Service Call
func serviceCallDirectory() -> Void {
let stringUrl = Constants.baseUrl + Constants.kDirectoryUrl
WebService.getRequestAPI(stringUrl, withSuccess: {(responseDic, Statusflag,error) in
if Statusflag {
self.tableView.backgroundColor = UIColor.clearColor()
self.tableView.hidden = false
let tempInfo = responseDic![Constants.kData] as! [AnyObject]
var imgthumbnail : String = ""
var imgmedium : String = ""
var imglarge : String = ""
var name : String = ""
var child : String = ""
if tempInfo.count != 0 {
for info in tempInfo {
let tid = info[Constants.Directory.tid] as! String
let vid = info[Constants.Directory.vid] as! String
if let names = info[Constants.Directory.kName] as? String {
name = names
}
if let childs = info[Constants.Directory.kChild] as? String {
child = childs
}
if let imgthumb = info[Constants.Directory.kImageThumbnail] as? String {
imgthumbnail = imgthumb
} else {
imgthumbnail = ""
}
if let imgmediumd = info[Constants.Directory.kImageMedium] as? String {
imgmedium = imgmediumd
} else {
imgmedium = ""
}
if let imglarges = info[Constants.Directory.kImageLarge] as? String {
imglarge = imglarges
}
let myModel = Directory(
data: tempInfo,
tid: tid,
vid: vid,
name: name,
imgThumbnail: imgthumbnail,
imgMedium: imgmedium,
imgLarge: "",
child: child
)
self.directorie.append(myModel)
}
I don't know that this is the only issue, but this code
class func loadSavedFile(fileName: String) -> AnyObject? {
let pathString: String = Utility.fetchFilePathString(fileName)
print("Here the pathString is \(pathString)")
if NSFileManager.defaultManager().fileExistsAtPath(pathString) {
return NSKeyedUnarchiver.unarchiveObjectWithFile(pathString)!
} else {
return "File doesn't exist"
}
return ""
}
Either returns an object or a string. That's not very sensible. It should return a success flag or a tuple or use a completion block. When you call this function your code expects to get back an array of directory, which in a number of cases won't happen
self.directorie = (Utility.loadSavedFile(Constants.File.kDirectory) as? [Directory])!
The error in your question indicates a different kind of data mismatch. You should try not to use AnyObject, let swift help you by type checking what you're doing...