nsjsonserialization

问题 I have response string from the backend like this: { "status": "success", "data": "{\"name\":\"asd\",\"address\":\"Street 1st\"}" } I think the problem was because the double quote (") in the data String. When I remove the double quote, the serialization was success. But the response is from backend and I have to deal with it. Anyone can solve this problem? Thank you. Here is the playground code. import Foundation var jsonStr = """ { "status": "success", "data": "{\"name\":\"asd\",\"address\"

问题 After spending too much time trying to find the best practices, here I am once again asking for some help, hoping I am not the only one struggling with this : I have NSManaged Objects like these : import Foundation import CoreData class Credential: NSManagedObject { @NSManaged var credentialArrivalDate: String? @NSManaged var credentialBarCode: String? @NSManaged var credentialComment: String? @NSManaged var credentialCountCheckIn: Int @NSManaged var credentialCountCheckOut: Int @NSManaged

问题 I am using imageData = UIImagePNGRepresentation(imgvw.image); and while posting [dic setObject:imagedata forKey:@"image"]; after NSData *data = [NSJSONSerialization dataWithJSONObject:dic options:NSJSONWritingPrettyPrinted error:&theError]; now app is crashing Terminating app due to uncaught exception ' NSInvalidArgumentException ', reason: 'Invalid type in JSON write (NSConcreteMutableData) 回答1: You need to convert your UIImage to NSData and then convert that NSData to a NSString which will

问题 I need to show a list of addresses in my app while keeping the same order as the response JSON. It looks something like this: { "addresses": { "e5fdb5ba-7afb-11e8-bead-43321d1a8905": { "contact": "Name1", "zipCode": "06100" }, "1495b580-7afc-11e8-bead-9f4049791561": { "contact": "Name2", "zipCode": "06100" }, "e5fdb5ba-7afb-11e8-bead-43321d1a8905": { "contact": "Name3", "zipCode": "06100" }, "1495b580-7afc-11e8-bead-9f4049791561": { "contact": "Name4", "zipCode": "06100" } } } But when I

问题 How do I get true/false (instead of "true"/"false") in json from a NSDictionary using NSJSONSerialization dataWithJSONObject? What keys should I store in the dictionary to get that? 回答1: NSNumber objects containing a BOOL are mapped to JSON "true" and "false". So just use @YES , @NO , or generally @(someBOOL) . For example: NSDictionary *dict = @{@"this is": @YES}; NSData *data = [NSJSONSerialization dataWithJSONObject:dict options:0 error:NULL]; NSString *str = [[NSString alloc] initWithData

问题 I have this JSON http://www.progmic.com/ielts/retrive.php that I need to parse. When I do it with NSJSONSerialization, I get "Unescaped control character around character 1981" error. I need to know: What the heck are the unescaped control characters? Is there a list or something? How do I get rid of this error? The easiest way? Thanks in advance. 回答1: I added this method to remove the unescaped characters from retrieved string: - (NSString *)stringByRemovingControlCharacters: (NSString *

问题 Is it possible to create an attribute to serialize some subelements inline (Formatting.None) with newtonsoft json.net? I have a very huge set of data and I want to keep it readeable. Some subelements are not very important and can be writen inline. { "name": "xxx", "desc": "xxx", "subelem": [ {"val1": 1, "val2": 2, ...}, //inline, {"val1": 1, "val2": 2, ...}, ... ] "subelem2": { "val1": 1, "val2": 2, ... } } I want to force the inline serialization for some sub objects of my models. In this

问题 In My code I want to convert NSData to NSDictionary but it returns nil I don't know what mistake I made,I Used NSJSONSerialization for convert data to dictionary, The NSData was received from server response. Here I show my Full code what I am trying. -(void)SendPushNotification:(NSString*)getUrl :(NSMutableDictionary *)getData withCompletionBlock:(void(^)(NSDictionary *))completionBlock { NSError *error; NSLog(@"dict val: %@",getData); NSData *jsonData = [NSJSONSerialization

问题 So this is likely a very basic question, but I was curious how you would handle parsing a JSON object that returns as a single string using JSONSerialization in Swift. So I'm playing around with a free Harry Potter API and noticed that one of the routes returns a single string (https://www.potterapi.com/v1/sortinghat) and the response it gives is simply a single string of one of the four houses in Harry Potter. "Ravenclaw" Below was my attempt. do { let json = try JSONSerialization.jsonObject

问题 I've read the documentation, tutorials, and other Stack Q&A and am hung up on how I'm able to get my JSON to appear using NSUTF8StringEncoding , but not using NSJSONSerialization - which is what I need to extract the data to a NSDictionary or NSArray . I believe it is an issue with the format of the NSData being returned from my URL? EDIT Here is error: Error Domain=NSCocoaErrorDomain Code=3840 "The operation couldn’t be completed. (Cocoa error 3840.)" (Garbage at end.) UserInfo=0x8aabc30