realm

问题 Can someone please share the implementation of a background thread with a Looper that i can pass to the subscribeOn(AndroidScheduler.from(/ backgroundThreadWithLooper /)). I need this because i am trying to implement a DBService class that runs all of its operations in the background while still getting live objects updates. So when i apply an addChangeListener, an exception is thrown: java.lang.IllegalStateException: Your Realm is opened from a thread without a Looper. Async queries need a

问题 I’m trying to fetch all of the items from Realm and display them in a SwiftUI List but I keep getting an error. In a UIKit/Realm application, I would just create a Results variable to store all of the items from Realm then, I would fetch items in the viewDidLoad method and assign them to the variable. I'm trying to do the same thing in SwiftUI but I'm not sure how to structure my code, I keep getting an error saying that my Realm model should conform to the StringProtocol , I'm pretty sure

问题 I have the following RETROFIT API: @POST("/payments") Observable<Response> saveCreditCard(@Body CreditCard creditCard) CreditCard is a RealmObject . When I try to use my API method: CreditCard card = realm.createObject(CreditCard.class); card.setWhateverField(...); ... mApi.saveCreditCard(card) .subscribeOn(Schedulers.io()) .observeOn(AndroidSchedulers.mainThread()) .subscribe(...); I get the following error: > retrofit.RetrofitError: com.fasterxml.jackson.databind.JsonMappingException: Realm

问题 I have an Android that uses firebase for authentication and MongoDb as a backend, I'm currently on the M0 cluster where the connection limit is 500. I use the Stitch API. When I use app from my device the number of connections increases from 4 to 8. I think initial 4 connections are by default so I don't mind that but I'm really concerned about such a jump in number of connections from a single device. PS. I tried having StitchAppClient and RemoteMongoClient in common class, so that there

问题 I have an array that contains multiple items. This is a Realm array. It contains data in the following structure: Results<Entry> <0x7ff04840e1a0> ( [0] Entry { name = Salary; amount = 40000; date = 2020-03-18 16:00:00 +0000; category = Main Incomes; entryType = Income; }, [1] Entry { name = Diff; amount = -500; date = 2020-04-18 16:00:00 +0000; category = Misc; entryType = Expense; }, [2] Entry { name = Cat Food; amount = -399; date = 2020-04-18 16:00:00 +0000; category = Animals; entryType =

问题 I have an array that contains multiple items. This is a Realm array. It contains data in the following structure: Results<Entry> <0x7ff04840e1a0> ( [0] Entry { name = Salary; amount = 40000; date = 2020-03-18 16:00:00 +0000; category = Main Incomes; entryType = Income; }, [1] Entry { name = Diff; amount = -500; date = 2020-04-18 16:00:00 +0000; category = Misc; entryType = Expense; }, [2] Entry { name = Cat Food; amount = -399; date = 2020-04-18 16:00:00 +0000; category = Animals; entryType =

问题 Here's my object: class Cat: Object { let toys = List<String>() } How can I find a toy in the toys array and delete it? if let foundToy = cat.toys.filter(???).first { try! realm.write { realm.delete(foundToy) } } 回答1: If you are keeping an array of distinct String (i.e., the toys array doesn't contain duplicates), you can just delete the first String found: if let toyIndex = cat.toys.firstIndex(of: toyNameToBeDeleted) { try! realm.write { cat.toys.remove(at: toyIndex) } } If you are trying to

问题 In a TableView Controller, I have multiple UITextFields that allow users to input some information and use Realm to save data from users' input. I use the following ways to add the data but I got the error saying "Expression type '@lvalue String?' is ambiguous without more context" import UIKit import RealmSwift class NewIdeaCreation: UITableViewController, UITextFieldDelegate { let realm = try! Realm() override func viewDidLoad() { super.viewDidLoad() // Do any additional setup after loading

问题 I have update DataBase in background. My data can contain ~2000 items and it take time to update. func updateData(items: [JSON], _ complete:@escaping() -> Void) { DispatchQueue.global(qos: .userInitiated).async { let currentModels = EgrnModel.getAllModels() var newModels: [EgrnModel] = [] var toDelete: [EgrnModel] = [] for model in currentModels { let contain = items.contains(where: {$0["id"].intValue == model.id}) if !contain { toDelete.append(model) } } let realm = try! Realm() try! realm

问题 I have developed an iOS application using RealmSwift. This works fine so far. Now, as I'm getting closer to publishing into App Store, I wanted to set up some cloud configuration to be able to connect to a cloud database, but I just got totally confused. A couple of weeks ago I saw Realm Cloud as an option. Now I only see MongoDB Realm - or something like that. I digged into a bit, and found that there are three components: Realm DB, Realm Sync and Mongo DB Atlas. If my understanding is