下降到當前用戶存儲核心數據

一些奇怪的東西與我的代碼發生的事情，我不知道如何解決它。當我想在存儲核心數據部分用戶它的工作原理，但我想我保存當前用戶，這是行不通的，顯然我嘗試保存的數據是零，但是當我打印此相同的數據到日誌中，應有盡有似乎完全沒有下降到當前用戶存儲核心數據

在for循環中循環我對所有我想要存儲和用戶，如果用戶名等於比我保存當前用戶的當前用戶的一個，否則我保存的其他用戶。

這真是奇怪，因爲通常這兩種操作，將當前用戶或添加其他用戶，都是一樣的。

我的代碼：

var managedObjectContext = AppDelegate().managedObjectContext 

// MARK - Adding all the users in Core data 
for userFromParseDataBase in usersFromParseDataBase { 

    let entity = NSEntityDescription.entityForName("Users", inManagedObjectContext: self.managedObjectContext) 
    let newUser = Users(entity: entity!, insertIntoManagedObjectContext: self.managedObjectContext) 

    // Checking if the current user is correctly logged in 
    if userFromParseDataBase.username == userName { 

     print(userFromParseDataBase.username) 
     print(userFromParseDataBase.profileName) 

     // Adding other users interacting with currentUser 
     newUser.username = userFromParseDataBase.username 
     print(newUser.username) 
     newUser.profileName = userFromParseDataBase.profileName 
     let imageData = try! userFromParseDataBase.profileImage.getData() 
     if (imageData.length != 0){ 
      newUser.photo = imageData 
     } 
     newUser.currentUser = true 
     newUser.added = false 

     do { 
      try newUser.managedObjectContext?.save() 
      self.usersFromCoreData.append(newUser) 
      print("TEST 1 - current user has been saved to core data") 
     } catch { 
      let saveError = error as NSError 
      print("ERROR CURRENT USERS : \(saveError), \(saveError.userInfo)") 
     } 

     // Checking if there are added users 
    }else if self.arrayAddedUsers.contains(userFromParseDataBase.username) { 

     // Adding added users 
     newUser.username = userFromParseDataBase.username 
     newUser.profileName = userFromParseDataBase.profileName 
     let imageData = try! userFromParseDataBase.profileImage.getData() 
     if (imageData.length != 0){ 
      newUser.photo = imageData 
     } 
     newUser.currentUser = false 
     newUser.added = true 
     do { 
      try newUser.managedObjectContext?.save() 
      self.usersFromCoreData.append(newUser) 
      print("TEST 1 - added user has been saved to core data") 
     } catch { 
      let saveError = error as NSError 
      print("ERROR ADDED USERS :\(saveError), \(saveError.userInfo)") 
     } 

     // Checking if the current user interacts with users that have not been added 
    }else if self.arrayGroupMembers3.contains(userFromParseDataBase.username){ 

     print(userFromParseDataBase.username) 
     print(userFromParseDataBase.profileName) 

     // Adding other users interacting with currentUser 
     newUser.username = userFromParseDataBase.username 
     print(newUser.username) 
     newUser.profileName = userFromParseDataBase.profileName 
     let imageData = try! userFromParseDataBase.profileImage.getData() 
     if (imageData.length != 0){ 
      newUser.photo = imageData 
     } 
     newUser.currentUser = false 
     newUser.added = false 

     do { 
      try newUser.managedObjectContext?.save() 
      self.usersFromCoreData.append(newUser) 
      print("TEST 3 - interacting user has been saved to core data") 
     } catch { 
      let saveError = error as NSError 
      print("ERROR INTERACTING USERS : \(saveError), \(saveError.userInfo)") 
     } 
    }else { 
     print("No condition is true") 
    } 

}

這就是被打印到日誌中，我打印的一切，因爲它看到我傳遞的數據不應該是零是很重要的：

[email protected] 
antoine 
Optional("[email protected]") 
TEST 2 - interacting user has been saved to core data 
[email protected] 
thomas 
Optional("[email protected]") 
ERROR CURRENT USERS : Error Domain=NSCocoaErrorDomain Code=1560 "(null)" UserInfo={NSDetailedErrors=(
"Error Domain=NSCocoaErrorDomain Code=1570 \"The operation couldn\U2019t be completed. (Cocoa error 1570.)\" UserInfo={NSValidationErrorKey=profileName, NSLocalizedDescription=The operation couldn\U2019t be completed. (Cocoa error 1570.), NSValidationErrorObject=<WeGrupp.Users: 0x7fd4d0c3fe60> (entity: Users; id: 0x7fd4d0c13310 <x-coredata:///Users/t9279CD60-1946-485B-BE68-F1EE10D8ACFE4> ; data: {\n added = 0;\n currentUser = 0;\n groups =  (\n );\n photo = nil;\n profileName = nil;\n username = nil;\n})}", 
"Error Domain=NSCocoaErrorDomain Code=1570 \"The operation couldn\U2019t be completed. (Cocoa error 1570.)\" UserInfo={NSValidationErrorKey=username, NSLocalizedDescription=The operation couldn\U2019t be completed. (Cocoa error 1570.), NSValidationErrorObject=<WeGrupp.Users: 0x7fd4d0c3fe60> (entity: Users; id: 0x7fd4d0c13310 <x-coredata:///Users/t9279CD60-1946-485B-BE68-F1EE10D8ACFE4> ; data: {\n added = 0;\n currentUser = 0;\n groups =  (\n );\n photo = nil;\n profileName = nil;\n username = nil;\n})}")}, [NSDetailedErrors: (
"Error Domain=NSCocoaErrorDomain Code=1570 \"The operation couldn\U2019t be completed. (Cocoa error 1570.)\" UserInfo={NSValidationErrorKey=profileName, NSLocalizedDescription=The operation couldn\U2019t be completed. (Cocoa error 1570.), NSValidationErrorObject=<WeGrupp.Users: 0x7fd4d0c3fe60> (entity: Users; id: 0x7fd4d0c13310 <x-coredata:///Users/t9279CD60-1946-485B-BE68-F1EE10D8ACFE4> ; data: {\n added = 0;\n currentUser = 0;\n groups =  (\n );\n photo = nil;\n profileName = nil;\n username = nil;\n})}", 
"Error Domain=NSCocoaErrorDomain Code=1570 \"The operation couldn\U2019t be completed. (Cocoa error 1570.)\" UserInfo={NSValidationErrorKey=username, NSLocalizedDescription=The operation couldn\U2019t be completed. (Cocoa error 1570.), NSValidationErrorObject=<WeGrupp.Users: 0x7fd4d0c3fe60> (entity: Users; id: 0x7fd4d0c13310 <x-coredata:///Users/t9279CD60-1946-485B-BE68-F1EE10D8ACFE4> ; data: {\n added = 0;\n currentUser = 0;\n groups =  (\n );\n photo = nil;\n profileName = nil;\n username = nil;\n})}")]

如果有人發現我的問題的解決方案，我真的很感激，我真的不知道如何解決這個問題！

來源

2016-04-28 C00kieMonsta

顯示您管理的對象上下文請。並儘量不要使用經典的if語句！ –

感謝您的幫助，我將託管對象上下文添加到代碼中。但是，不使用經典的if語句意味着什麼？你的意思是使用switch語句嗎？ – C00kieMonsta

對不起，如果！我的意思是for-in週期而不是for。 –