Question

我正在尝试将数组转换为json但无法使其工作。它说数组是一个无效的类型转换为json，但它只是一个int数组。

//These are for me to able to use time 

let date = NSDate()
let calendar = NSCalendar.current

//This is the structure that my array will be filled with    

struct Day
{
var week: Int?
var date: Int?
var month: Int?
var year: Int?
var weekday: Int?
}

//This is my array

var theArrayContainingAllTheUserData = [Day]()

var numberofloops = 0

//This is a loop that fills my array with data

while theArrayContainingAllTheUserData.count < 20
{

var theincreasingnumberofdays: NSDate {
    return NSCalendar.current.date(byAdding: .day, value: numberofloops, to: NSDate() as Date)! as NSDate
}

let myCalendar = NSCalendar(calendarIdentifier: NSCalendar.Identifier.gregorian)!

numberofloops=numberofloops+1

var ScoopDay =  Day()

ScoopDay.week=Int(myCalendar.component(.weekOfYear, from: theincreasingnumberofdays as Date!))
ScoopDay.date=Int(myCalendar.component(.day, from: theincreasingnumberofdays as Date!))
ScoopDay.month=Int(myCalendar.component(.month, from: theincreasingnumberofdays as Date!))
ScoopDay.year=Int(myCalendar.component(.year, from: theincreasingnumberofdays as Date!))
ScoopDay.weekday=Int(myCalendar.component(.weekday, from: theincreasingnumberofdays as Date!))

theArrayContainingAllTheUserData.append(ScoopDay)

}

//And here is my failed attempt at converting it to json

do {
let jsonData = try JSONSerialization.data(withJSONObject: theArrayContainingAllTheUserData, options: JSONSerialization.WritingOptions.prettyPrinted)
} catch {
print(error.localizedDescription)
}

获取错误：

2016-10-28 13：20：09.669 jsona arrayen [3284：332873] ***由于未捕获的异常'NSInvalidArgumentException'终止应用程序，原因：'JSON写入的无效类型（_SwiftValue）'

First throw call stack:
(
    0   CoreFoundation                      0x000000010840834b __exceptionPreprocess + 171
    1   libobjc.A.dylib                     0x0000000107e6921e objc_exception_throw + 48
    2   CoreFoundation                      0x0000000108471265 +[NSException raise:format:] + 197
    3   Foundation                          0x000000010795d284 _writeJSONValue + 668
    4   Foundation                          0x000000010795d6d9 ___writeJSONArray_block_invoke + 132
    5   CoreFoundation                      0x00000001083ae36f __NSArrayEnumerate + 607
    6   Foundation                          0x000000010795d3df _writeJSONArray + 330
    7   Foundation                          0x000000010795d204 _writeJSONValue + 540
    8   Foundation                          0x000000010795cf94 -[_NSJSONWriter dataWithRootObject:options:error:] + 124
    9   Foundation                          0x000000010795ce74 +[NSJSONSerialization dataWithJSONObject:options:error:] + 333
    10  ???                                 0x0000000116ddd3cb 0x0 + 4678603723
    11  jsona arrayen                       0x0000000107892620 main + 0
    12  CoreFoundation                      0x00000001083ad25c __CFRUNLOOP_IS_CALLING_OUT_TO_A_BLOCK__ + 12
    13  CoreFoundation                      0x0000000108392304 __CFRunLoopDoBlocks + 356
    14  CoreFoundation                      0x0000000108391a75 __CFRunLoopRun + 901
    15  CoreFoundation                      0x0000000108391494 CFRunLoopRunSpecific + 420
    16  GraphicsServices                    0x000000010d796a6f GSEventRunModal + 161
    17  UIKit                               0x0000000108f3bf34 UIApplicationMain + 159
    18  jsona arrayen                       0x00000001078926e9 main + 201
    19  libdyld.dylib                       0x000000010b8e968d start + 1
    20  ???                                 0x0000000000000001 0x0 + 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException

将包含结构的数组转换为json

0 个答案: