Question

我正在尝试创建一个对象，并通过NSKeyedArchiver.archiveRootObject方法保存它（我知道此方法已弃用，但这是为了学校的工作），但是一旦我尝试保存，应用程序就会崩溃。我已将问题缩小为“ let isSuccessfulSave”行。

这是一个iOS应用程序，我正在当前运行iOS 12.2的iOS模拟器中运行它，我试图完全卸载该应用程序并重新安装它（认为旧的保存尝试可能是问题所在），但问题仍然存在一样。

保存功能：

@IBAction func saveImage(_ sender: Any) {
    if self.myImageView.image == nil{
        return
    }

    if nameTextField.text == ""{
        return
    }


    let fileName = nameTextField.text ?? ""
    let photo = self.myImageView.image!
    let thisFile = MyFile(name: fileName, photo: photo, fileType: MyFile.FileType.drawing)//Last argument is an enum declared in the MyFile class
    let isSuccessfulSave = NSKeyedArchiver.archiveRootObject(thisFile!, toFile: MyFile.ArchiveURL.path)//Last argument is declared as static let ArchiveURL = DocumentsDirectory.appendingPathComponent("myFiles") in the MyFile class
    if isSuccessfulSave{
        os_log("Drawing successfully saved.", log: OSLog.default, type: .debug)
    } else {
        os_log("Failed to save drawing", log: OSLog.default, type: .error)
    }


}

正在使用的初始化：

init?(name: String, photo: UIImage, fileType: FileType){
    guard !name.isEmpty else{
        return nil
    }

    self.name = name
    self.photo = photo
    self.fileType = fileType

}

错误日志如下：

2019-07-15 13:25:55.935796-0700 AppleNotes[2578:45797] libMobileGestalt MobileGestalt.c:890: MGIsDeviceOneOfType is not supported on this platform.
2019-07-15 13:26:01.035761-0700 AppleNotes[2578:45797] [MC] System group container for systemgroup.com.apple.configurationprofiles path is /Users/gabriel/Library/Developer/CoreSimulator/Devices/7851257A-19F9-42EA-9E80-318C61C15ADD/data/Containers/Shared/SystemGroup/systemgroup.com.apple.configurationprofiles
2019-07-15 13:26:01.040518-0700 AppleNotes[2578:45797] [MC] Reading from private effective user settings.
/Users/gabriel/Library/Developer/CoreSimulator/Devices/7851257A-19F9-42EA-9E80-318C61C15ADD/data/Containers/Data/Application/B06CD57F-2FED-4EA2-B802-7942065E9B60/Documents/myFiles
2019-07-15 13:26:04.923588-0700 AppleNotes[2578:45797] -[__SwiftValue encodeWithCoder:]: unrecognized selector sent to instance 0x60000184dbc0
2019-07-15 13:26:04.935456-0700 AppleNotes[2578:45797] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[__SwiftValue encodeWithCoder:]: unrecognized selector sent to instance 0x60000184dbc0'
*** First throw call stack:
(
0   CoreFoundation                      0x000000010fa676fb __exceptionPreprocess + 331
1   libobjc.A.dylib                     0x000000010ac1aac5 objc_exception_throw + 48
2   CoreFoundation                      0x000000010fa85ab4 -[NSObject(NSObject) doesNotRecognizeSelector:] + 132
3   CoreFoundation                      0x000000010fa6c443 ___forwarding___ + 1443
4   CoreFoundation                      0x000000010fa6e238 _CF_forwarding_prep_0 + 120
5   Foundation                          0x000000010a6aa3d0 _encodeObject + 1230
6   AppleNotes                          0x000000010a1d59db $s10AppleNotes6MyFileC6encode4withySo7NSCoderC_tF + 1259
7   AppleNotes                          0x000000010a1d5afc $s10AppleNotes6MyFileC6encode4withySo7NSCoderC_tFTo + 60
8   Foundation                          0x000000010a6aa3d0 _encodeObject + 1230
9   Foundation                          0x000000010a6a9588 +[NSKeyedArchiver archiveRootObject:toFile:] + 214
10  AppleNotes                          0x000000010a1d1b5b $s10AppleNotes11PaintWindowC9saveImageyyypF + 2763
11  AppleNotes                          0x000000010a1d1f7c $s10AppleNotes11PaintWindowC9saveImageyyypFTo + 76
12  UIKitCore                           0x0000000110bb3204 -[UIApplication sendAction:to:from:forEvent:] + 83
13  UIKitCore                           0x000000011031d963 __45-[_UIButtonBarTargetAction _invoke:forEvent:]_block_invoke + 154
14  UIKitCore                           0x000000011031d89c -[_UIButtonBarTargetAction _invoke:forEvent:] + 152
15  UIKitCore                           0x0000000110bb3204 -[UIApplication sendAction:to:from:forEvent:] + 83
16  UIKitCore                           0x0000000110608c19 -[UIControl sendAction:to:forEvent:] + 67
17  UIKitCore                           0x0000000110608f36 -[UIControl _sendActionsForEvents:withEvent:] + 450
18  UIKitCore                           0x0000000110607eec -[UIControl touchesEnded:withEvent:] + 583
19  UIKitCore                           0x0000000110bebeee -[UIWindow _sendTouchesForEvent:] + 2547
20  UIKitCore                           0x0000000110bed5d2 -[UIWindow sendEvent:] + 4079
21  UIKitCore                           0x0000000110bcbd16 -[UIApplication sendEvent:] + 356
22  UIKitCore                           0x0000000110c9c293 __dispatchPreprocessedEventFromEventQueue + 3232
23  UIKitCore                           0x0000000110c9ebb9 __handleEventQueueInternal + 5911
24  CoreFoundation                      0x000000010f9cebe1 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
25  CoreFoundation                      0x000000010f9ce463 __CFRunLoopDoSources0 + 243
26  CoreFoundation                      0x000000010f9c8b1f __CFRunLoopRun + 1231
27  CoreFoundation                      0x000000010f9c8302 CFRunLoopRunSpecific + 626
28  GraphicsServices                    0x000000010d7fc2fe GSEventRunModal + 65
29  UIKitCore                           0x0000000110bb1ba2 UIApplicationMain + 140
30  AppleNotes                          0x000000010a1cbecb main + 75
31  libdyld.dylib                       0x00000001132d7541 start + 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException
(lldb)

NSInvalidArgumentExceptionn NSKeyedArchiver的问题

0 个答案: