Convert anyobject to dictionary swift 4

Convert anyobject to dictionary swift 4. Dec 7, 2017 · You should make your Country conform to Codable protocol, convert your dictionary to JSON data using JSONSerialization and then just decode the Data using JSONDecoder, note that you can set its keyDecodingStrategy property to convertFromSnakeCase auto avoid the need to declare custom coding keys like dial_Code: Feb 6, 2018 · How to convert dictionary to custom type in Swift? 1. Arrays provide a way to store an ordered collection of items where those items are accessed by an index value corresponding to the item position in the array. rawValue)! as String print (jsonString) Swift 4 Dictionary extension. Collection Types. Swift: Convert object to Dictionary not working properly. none into Optional<Any>. I am just having trouble getting it to convert from the NSData to dictionary. Now here comes my problem. Sometimes that’s straightforward, but other times you’ll need to be a bit more creative. The other is to interpret Optional<String>. defaultManager(). edited Jun 27, 2017 at 5:55. JSONObjectWithData(jsonData, options: []) as [Dictionary<String, AnyObject>] // Loop through objects for dict in json { // ParsedObject is a single instance of an object inside the JSON data // Its properties are a mixture of String, Int May 16, 2024 · let str = String(decoding: data, as: UTF8. [. Now, emptyDict is a dictionary ready to store values with keys of type String and values of type Int. Summary. value as? [String:Any] { // The content of the "visitor" key is a dictionary of dictionaries if let visitorDictionary = snapshotValue["visitor"] as? Aug 2, 2017 · [Dictionary<String, AnyObject>]{ } Compiler (of course) says to me that I can't use a String's index while it's [Any] : I can't find the proper why to cast it as String. I hope someone with better and deep explanation will come and explain us here. var mutable : [AnyObject] = immutable. 1; return r } Type Casting for Any and AnyObject in page link. The easiest fix, without having to change any of your other code, is to append. Correct me if I miss-understood the question. data(withJSONObject: self, options: . This initializer takes an array of key-value pairs, and it creates a dictionary with the same keys and values. 3 1. Sep 3, 2020 · JSONDecoder (). Apr 14, 2015 · Sometimes it's necessary to print out server's response for debugging purposes. com). The new container won’t always be the same type – we might convert from a dictionary into an array, for example – but you’re still putting values back into a container. sharedAnalytics(). import Foundation. How can I do that? How do I cast a snapshot returned by firebase query in typescript into a dictionary of [string: AnyObject] let snapValue = snap. Sep 7, 2016 · mutableDictionary. if let atts = NSFileManager. decodeIfPresent(BreedImage. Sep 15, 2014 · I am doing this class by class. Thus the dictionary won't be created until later, when you actually access self. I can store this in a database perfectly but when i read it back, obviously its a string. I found it useful for dealing with JSON that inconsistently uses null, blank, numbers, and numeric strings for IDs. Encoding. protocol Convertable: Codable {. e: Why does [Int Mar 1, 2018 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. Upon further investigation, with the exception of a few key types, dictionaries tend to be encoded as and an array of interleaved key/value pairs. Dictionaries are unordered collections of key-value associations. A force cast ( as!) will fail if the object can't be cast to a string. Oct 7, 2019 · I have 2 Array of Dictionaries and I want to check if second array of dictionary's one dictionary in present in first array of dictionary or not. Step 3 − Handle the failure case in this method as the data () method returns an optional Swift 2: Cannot convert value of type '[NSObject : AnyObject]' to expected argument type '[String : AnyObject]' 1 Cannot convert the type [NSObject : AnyObject] to string Oct 4, 2016 · I'm trying to convert a json string to a dictionary. Any Object can represent an instance of any class type. prettyPrinted) return String(bytes: jsonData, encoding: String. Type) to expected argument type 1 swift Completion handlers cannot convert value of type to specified type Mar 15, 2017 · 12. The signature for the call I want is: func CFDictionaryGetValue(CFDictionary!, UnsafeRawPointer!) How the heck do I convert my key (a string) to an UnsafeRawPointer so I can pass it to this call? Sep 21, 2015 · Cannot convert value of type '[NSObject : AnyObject]' to expected argument type '[String : AnyObject]' change code: NSUserDefaults. e Array, Dictionary, String, Int, Obj C Classes Hence an Array<String> is represented by AnyObject not [AnyObject] let jsonString:[String: AnyObject] =. params . Feb 15, 2015 · 4. func toString(_ value: Any?) -> String {. } extension Convertable {. compactMapValues { $0 } compactMapValues has been introduced in Swift 5. standardUserDefaults(). Now that we created our struct as well as a new instance of our struct, we can convert this object to JSON. addToolTipRect(frame, owner: self, userData: &thedata) Apr 14, 2018 · Cannot convert value of type '[String : AnyObject]?. some(Optional<String>. You can use it as an Array in swift, make a copy of it and modify as follows: let immutable : NSArray = [ 1, 2, 3 ] //immutable[0] = 1 // Fails, ok. A JSON dictionary is [String:Any] because all JSON dictionary values are (Swift) value types. Type Casting for Any and AnyObject. Follow below code snippet: newDictionary = oldDictionary. Jun 30, 2017 · Use NSURLQueryItem. Nov 4, 2016 · For those who have a problem with NSDictionary, simply use this extension:. Sep 20, 2017 · NSAttributedStringKey was changed to a struct in Swift 4. if let dict = anyDict as? [String: Any] {. 0 – see Hacking with Swift tutorial 7. So, the fastest thing you can Aug 12, 2018 · You first need a dictionary which has a value type that can hold your value. But if you have the JSON data available, you should instead work with the data, without using a string at all. print("It's a dict") } else {. The bridging is actually quite expensive as I just found out in my own code (yay for profiling!), so if it's being called quite a lot (as it was for me) this can become a big issue. How can I send in my set of predefined dictionary of optionals into the traits section? Apr 14, 2018 · Cannot convert value of type '[String : AnyObject]?. Both provide a way to collect together multiple items within a single object. post[key. Use compactMapValues:. Jul 13, 2014 · In your case, you are accessing an immutable array which is an NSArray of AnyObject s (see documentation ). Here is how: var emptyDict: [String: Int] = [:] // 'emptyDict' is an empty dictionary with keys of type String and values of type Int. if let result = lasrIDArray. There may be an easier way though. it) that will mash any value into a string, with nil becoming an empty string. You use query items with the queryItems property of an NSURLComponents object. For example, Jul 11, 2021 · 3. 0 extension NSDictionary { var swiftDictionary: Dictionary<String, Any> { var swiftDictionary = Dictionary<String, Any>() for key : Any in self. updateValue("sdfd", forKey: "id") ary. let dicA = [[String:Any]]() let dicB = [[String:An 1. Asking for help, clarification, or responding to other answers. So far I've been able to successfully print out the JSON response, but mapping it to a struct has been rather Aug 2, 2017 · [Dictionary<String, AnyObject>]{ } Compiler (of course) says to me that I can't use a String's index while it's [Any] : I can't find the proper why to cast it as String. Moreover, looking at your current implementation for Posts, I see no reason to inherit from NSObject. Jul 11, 2021 · 3. /// define protocol convert Struct or Class to Dictionary. But at the end I can't remove the Optional. You can't say object as! type(of: object), in other words; you have to Jul 18, 2017 · You cannot convert a dictionary directly from [String: AnyObject] to [String: String]: since AnyObject can hold different types of values in the same dict, each such value entry isn't necessarily convertable to String. attributesOfItemAtPath(myUrl. This code should work: Aug 9, 2016 · 8. You signed in with another tab or window. Or because your query returns no values. swift Nov 15, 2017 · // OK let i: Int = 1 let i2 = i as AnyObject // Error: cannot convert value of type 'S<Int>' to type 'S<AnyObject>' in coercion struct S<T> { } let s = S<Int>() let s2 = s as S<AnyObject> Besides, even if it would, the expressions you would extract from the dictionary would have lost their column type: you could not use them directly in SQLite Sep 18, 2015 · Normally I wouldn't do unwrapping to AnyObject, as it makes little sense. query else { return nil} var queryStrings = [String: String]() for Apr 4, 2023 · Here is an Example of Converting a Dictionary into a JSON String. You can't cast any random value to a string. (*) This isn't really "Swift-like" because it includes AnyObject, which should almost never be part of a non-temporary data structure. Use Any and Any Object only when you explicitly need the behavior and capabilities they provide Sep 30, 2016 · On Swift 4, you can achieve this by using Dictionary's grouping:by: As i understand from you're question you would like to convert to Array to Dictionary. For more info see Swift proposal SE-0218. This concept matters because Swift also provides map() on other types outside of Sequence : both Optional and Result support it, and it works in exactly the same way. Oct 24, 2016 · String is not of type AnyObject. Aug 21, 2015 · In this little Code-snippet below I try to convert the Result of an Realm query to String. Apr 29, 2016 · Oh btw, I know that swift doesn't need semicolon at the end. AnyClass represents a class type rather than an instance of that class. Organize data using arrays, sets, and dictionaries. /// implement convert Struct or Class to Dictionary. I usually unwrap to [String: AnyObject] as I'm expecting Dictionary from my API, and then I attempt to convert it to my custom model class. description to get the string. Swift 4 or later you can use JSON Codable protocol: Convert [String: Any] to [String: String] in Swift. – matt. utf8. Remember that CFDictionary is toll-free bridged with NSDictionary. Feb 21, 2017 · You have JSON response with Top level as Array not dictionary. How to convert dictionary to JSON in Swift? NSJSONSerialization. All objects are instances of NSString, NSNumber, NSArray, NSDictionary, or NSNull. I suggest you read up on reference types and value semantic types in Swift; its a subtle but important distinction and its also different from what you expect from most other Jul 16, 2015 · Using Swift 4 Dictionary(uniqueKeysWithValues:) initializer and passing a new array from the enumerated collection: extension Collection { var indexedDictionary: [String: Element] { return Dictionary(uniqueKeysWithValues: enumerated(). ios Sep 20, 2023 · In such cases, Swift allows us to initialize an empty dictionary quite easily. result[key] = v. Objects are reference types, but String in swift has value semantics. append(mutableDictionary) mutableArray = NSMutableArray(array: ary) Removing the optional did the trick! The only explanation I have is that: "NSMutableArray doesn't hold optionals". reduce(*newDictionary*) { r, e in var r = r; r[e. AnyObject can contain class and struct i. Check out this in a Playground: Sep 16, 2015 · extension Dictionary where Key: StringLiteralConvertible, Value: AnyObject { var jsonString: String { return "" } } As per your updated answer. } Final goal is to convert the Task Realm object into JSON. To do this, we use the following code: let encodedData = try JSONEncoder(). But this is not your case: you have the JSON data. Sep 22, 2016 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. Jun 19, 2014 · // Array of parsed objects var parsedObjects = [ParsedObject]() do { let json = try NSJSONSerialization. According to the docs the definitive way is to call isValidJSONObject: or try: An object that may be converted to JSON must have the following properties: The top level object is an NSArray or NSDictionary. Have a look: let newname = name as! String. Instead, you need to go over each key-value pair and conditionally perform a value conversion to String, if possible. let dicA = [[String:Any]]() let dicB = [[String:An Nov 21, 2014 · Swift 5. When I call Objective C methods from Swift, a lot of Objective C types are converted to their Swift counterparts. Swift - Array to Dictionary. extension Dictionary { var jsonStringRepresentation: String? { guard let theJSONData = try? Jan 11, 2024 · Swift provides serveral special types for working with nonspecific types: AnyObject represents an instance of any class type. Swift 3. Below answer is for people who are stuck in previous versions of Swift and for legacy reasons. any represents existential types, can only be applied to protocols and protocol compositions, or metatypes thereof. If it is a string, then as! String will cast it to a string. decode ( [Int : Double]. In my case an Objective C NSMutableArray gets converted to Swift's Array<AnyObject>. PrettyPrinted) let jsonString = NSString (data: jsonData, encoding: String. encode struct or class to data. func taskToDictionary() -> [String: AnyObject] {. none Dictionary. none. i. Arrays are ordered collections of values. That's probably happening because your code is asynchronous. May 24, 2019 · How can I convert a snapshot value into a dictionary value of type [String: AnyObject] I am trying to accomplish the bellow line in swift but in Typescript, so that I can loop through the keys. The method I'm thinking of is: Convert the object to a dictionary using a method within the class. Feb 15, 2018 · Imagine the following code: let objcDict: NSDictionary = ["one": 3, "two": "twoValue", "three": "three"] let anyDict = objcDict as Any. It's just my habit from obj-c and swift looks like doesn't care about it, so don't let this semicolon distract us. 2. toInt()!] = object. Type' (aka 'Optional<Dictionary<String, AnyObject>>. Any represents an instance of any type at all, including function types. flatMap( {$0["\\(self. AnyObject can represent an instance Oct 1, 2021 · One is to do the covariant optional-optional conversion (since String is a subtype of Any) to turn Optional<String>. Dictionary["Example 2"] How do i go about doing that? Thanks Jul 23, 2018 · It seems like you can't add extensions to Any. identify(userId: String!, traits: [NSObject : AnyObject]!) As a new Swift developer I'm struggling to get the syntax right to send an object into traits. "[Example 2: 2, Example 3: 3, Example 1: 1]" I want to convert it back to i can assess it like . In my app when the dictionary key was actually Int32 this failed. EVReflection: This works of reflection principle. If you wield a [String:Any] in front of a simple struct it will hurt. A compound type may contain named types and other compound types. There are two compound types: function types and tuple types. dictionary. You have to use if let and a conditional cast to NSDate to convert your anyObject to NSDate and them you can format your date as you wish. For the life of me, I cannot figure out how to do this in Swift 3. selectedTitle)\ Using JSONSerialization always felt unSwifty and unwieldy, but it is even more so with the arrival of Codable in Swift 4. Type of jsonString is Dictionary<String, Array<String>> You can give it a type like Dictionary<String, AnyObject>. Collections in Swift take the form of either dictionaries or arrays. return [. Suppose you have a variable called person which is of type Any; then use the following code: let personDictionary = (person as! [String:String])["name"] where name is the key in the dictionary. May 28, 2019 · Sponsor Hacking with Swift and reach the world's largest Swift community! Available from iOS 5. dataWithJSONObject (dict, options: NSJSONWritingOptions. That looks very interesting, thank you! Mar 15, 2017 · 12. The variable jsonString is already a dictionary Sep 12, 2014 · AnyObject is only for reference types (classes), Any is for both value and reference types. Here is an example of a string I'm trying to turn into a swift dictionary Aug 29, 2020 · Soham Joshi. self, from: d) This was successful, as was decoding [String : String]. Knowledge Cube. allKeys { let stringKey = key as! Jun 4, 2017 · This function is only a convenience way of converting a JSON string to a dictionary if you only have the string to work with. image) These are just a few of the advanced techniques you can use with Codable. any represents existential types, can only be applied to protocols and Be careful converting a CFDictionary to a Swift native dictionary. A custom protocol in Swift that lets you convert any struct or class object to dictionary, JSON, Plist or archived data and vice versa, save to files, load from files, initialise objects, encode, decode and more, in an amazingly simple, fast and natural way! - gabrieltheodoropoulos/GTCodable Mar 5, 2015 · While this will certainly work, a better solution would be to convert your post into a [Int: String] typed dictionary like you expect in the responseJSON closure. This means you need to recover the object's real type from the Any that you have. x. You switched accounts on another tab or window. As far as I know, the easiest way to handle this is to create a way to map your objects properties into a dictionary and pass that dictionary for turning your object into JSON data. Here is an example of a string I'm trying to turn into a swift dictionary Nov 29, 2015 · What I am trying to do is read from a JSON file and create a new object with what is read from the JSON data online. registerDefaults(defautlsToRegister as [String: AnyObject]) building warnings 'NSMutableDictionary' is not convertible to '[String : AnyObject]' Please teach me how to do? thanks. stringValue. However, other objects that use NSAttributedStringKey apparently didn't get updated at the same time. . You need to cast the extracted value to a String before you can compare it to "1". self) If the Data instance can’t be converted to a UTF-8 string, you’ll might be sent back an empty string, but Swift might replace any bad characters with the Unicode replacement character. That looks very interesting, thank you! Apr 14, 2015 · Sometimes it's necessary to print out server's response for debugging purposes. You should convert the data to a dictionary - forget the strings altogether. Here's how this could work. let json = JSON(data) var post = [Int: String]() for (key, object) in json {. Swift provides three primary collection types, known as arrays, sets, and dictionaries, for storing collections of values. A proper Swift implementation would convert AnyObject to a real type. However, that probably has nothing to do with "the array returns nil". Provide details and share your research! But avoid …. Jun 4, 2017 at 15:17. This is what I tried. I am searching a key in an Array of Dictionarys and I want to convert the result value into an Int value. You cannot convert to string. The type AnyObject cannot have a value nil. You do need to know which format is used to store the string, but UTF-8 is usually the best to go with. E. You need to convert to an NSDictionary You must specify Key to conform to NSObject to properly convert to an NSDictionary. Aug 15, 2015 · dynamic var contactName: String = "". 0. – Eric Aya. append Using JSONSerialization always felt unSwifty and unwieldy, but it is even more so with the arrival of Codable in Swift 4. Now if you want to convert this Array response to Dictionary with type [Int:Any] then you need to loop through the array and make dictionary from it. The type of the value that you pass to encode(_:) has to be a concrete type that implements Encodable. The way I have learned to do this is since its a dictionary is to read it in as a NSData and then convert it to a dictionary. I came across this answer but it only works for arrays with one value. // Here I try to convert the AnyObject from above to a Swift-String but this don't work! // Error: Could not cast value of type '__NSArrayM' (0x7fff7db48c18) to Jun 11, 2014 · What I would suggest is that you set this var as @lazy, type it as Dictionary<String,String>, and set it to a called closure that returns this dictionary. value as! Nov 17, 2015 · You don't have to cast the dictionary, just declare your dictionary as a variable with var then pass it as an inout argument using &: var thedata:[String:AnyObject] = self. Im trying to work with JSON and I have very little experience doing so, to make it easier on myself I figured I would use the Almofire and SwiftyJSON packages. For example, the tuple type (Int, (Int, Int)) contains two elements: The first is the named type Int, and the second is another compound May 18, 2023 · image = try values. Step 2 − Using the data (withJSONObject:options:) method, convert a dictionary to JSON data format. Up till now the best way I have found to append data to a dictionary by using one of the higher order functions of Swift i. utf8) ?? invalidJson } catch { return invalidJson } } func Jan 28, 2019 · 0. "reduce". Similar solutions… How to parse JSON using SwiftyJSON; How to parse a sentence using NSLinguisticTagger; How to download JSON from the internet and decode it into any Codable type Because result is a dictionary of type [String : AnyObject], the values you extract from it will be typed as AnyObject?, which has no valid operator overload for == with a String. If you had a dictionary with a value type that was an optional type, like [String : AnyObject?], then it can hold nil values. If you know it will always contain an NSNumber then you need to add code that converts the NSNumber to a string. Within my Swift class, I get such an array back from an Objective C object. 1. You do have some other options though - either make it a function toLiteral(value: Any) -> String, or what is probably a neater solution; use the description: String attribute which is present on all types that conform to CustomStringConvertible, which includes String, Int, Bool, and Float - your code would be simplified down to just xml. 0] = e. So you need to cast it to [[String:Any]] instead of [String: Any]. What you probably want is something like: Aug 2, 2020 · Convert Object to JSON. print("It's not") Apr 10, 2015 · To access it like this you need to convert your dictionary to Struct as follow: edit/update: Swift 3. swift Oct 7, 2019 · I have 2 Array of Dictionaries and I want to check if second array of dictionary's one dictionary in present in first array of dictionary or not. encode(city) let jsonString = String(data: encodedData, encoding: . You can use AnyCodable in your project. utf8) ?? invalidJson } catch { return invalidJson } } func Mar 26, 2015 · Xcode tells me (typeahead hints) that in Swift it translates to: SEGAnalytics. Sets are unordered collections of unique values. 👉. Check out this in a Playground: Feb 5, 2016 · Convert array data model to dictionary (swift) Ask Question Asked 8 years, 3 months ago. Oct 6, 2017 · Simple Extension. Learn when and when not to use any of these keywords in Swift. decode data and transfer to dictionary. AnyObject {. Mar 22, 2022 · AnyObject, Any, and any look similar, but have important differences. Note that the crash you get is definitely not appropriate and you should open a radar (bugreport. in the places where you are not able to use Any while trying to use JSONEncoder api. Sep 24, 2017 · Don't use [String:AnyObject] as JSON dictionary representation in Swift 3 at all. Swift provides two special types for working with nonspecific types: Any can represent an instance of any type at all, including function types. Step 1 − Create a global function that takes a dictionary as an argument to convert. In order to cast, you must have a statically-specified type to which you are casting. 1,000 12 36. rawValue to all your occurrences of NSAttributedStringKey setters - turning the key names into Strings: 45. Reload to refresh your session. This takes less code and also supports NSDictionary, NSCoding, Printable, Hashable and Equatable The simplest way is to use the `Dictionary` initializer. apple. You can convert Any type to Dictionary using [:] type. none as a value of type Any and then perform the value-to-optional conversion to obtain a value of type Optional<Any> (containing . e. An NSURLQueryItem object represents a single name/value pair for an item in the query portion of a URL. Swift 3 Oct 6, 2017 · Use protocol, it is an elegant solution. Remember, your goal is to bridge the gap between the JSON data and your Swift objects. map{(String($0),$1)}) } } A compound type is a type without a name, defined in the Swift language itself. Type) to expected argument type 1 swift Completion handlers cannot convert value of type to specified type Sep 15, 2021 · Hello everyone, I am a beginner to Swift and Programming so please do forgive me if this a rather obvious question/answer. self, forKey: . g Oct 27, 2016 · Here's a simple function ( repl. utf8) . extension URL { var queryDictionary: [String: String]? { guard let query = self. Feb 24, 2017 · Try a pure Swift approach like this : // snapshotValue is a dictionary if let snapshotValue = snapshot. path!, error:nil) as? Dictionary<String, AnyObject> {. A String however, can be of type Any, so the code below works. Json serialization needs an object, Swift Dictionaries are structs. Example with dictionary Oct 12, 2016 · Swift 2 also provided implicit conversions to AnyObject for some bridged value types, such as String, Array, Dictionary, Set, and some numbers, as a convenience so that the native Swift types could be used easily with Cocoa APIs that expected NSString, NSArray, or the other container classes from Foundation. Here's a function I use: extension Dictionary { var json: String { let invalidJson = "Not a valid JSON" do { let jsonData = try JSONSerialization. Modified 7 years, Array<Dictionary<String,AnyObject>> = Array() for Oct 4, 2016 · I'm trying to convert a json string to a dictionary. Then you will be allowed to use [String: AnyEncodable] / [AnyEncodable] etc. Jan 11, 2024 · AnyObject represents an instance of any class type. So a dictionary of type [String : AnyObject] cannot have a value nil. All dictionary keys are instances of NSString. And if you're happy to get nothing back if any of the Anys are not Strings, then you can do: Safe: if let stringDictionary = dictionary as? [String: String] { //Use your new stringDictionary here } Unsafe: let stringDictionary = dictionary as! [String: String] Apr 13, 2015 · UPDATE: Codable protocol introduced in Swift 4 should be sufficient for most of the JSON parsing cases. You signed out in another tab or window. Then when turning your JSON data into the object, expect a dictionary to be returned and reverse the mapping process. let array = [“a”: 1, “b”: 2, “c”: 3] let dictionary = Dictionary (array) print (dictionary) // [“a”: 1, “b”: 2, “c”: 3] You can also use the `map Warning: this is a convenience method to convert a JSON string to a dictionary if, for some reason, you have to work from a JSON string. So you should go for [String: Any]. tl vj tv ru jv yc lj ie xa tr