ACAccount.h突然出現的錯誤

Question

我正在處理我的項目，並且突然間我在項目中出現以下錯誤。

這是一個在Accounts Framework中的問題，我甚至沒有親近觸摸（或任何框架）。特別是因爲這些文件被鎖定。

有誰知道我爲什麼得到這個以及如何解決它？

對不起，我不能說更具描述性，但它突然發生，我從來沒有觸及過。

Answer 1

我得到了編輯ACAccount.h後，下面的錯誤。

打開標題文件夾，選擇ACAccount.h並按⌘Z（撤消）。

或者與下面的代碼比較你ACAccount.h文件

// 
// ACAccount.h 
// Accounts 
// 
// Copyright (c) 2011-2012 Apple Inc. All rights reserved. 
// 

#import <Foundation/Foundation.h> 
#import <Accounts/AccountsDefines.h> 
@class ACAccountType, ACAccountCredential; 

// The ACAccount class represents an account stored on the system. 
// Accounts are created not bound to any store. Once an account is saved it belongs 
// to the store it was saved into. 

ACCOUNTS_CLASS_AVAILABLE(10_8, 5_0) 
@interface ACAccount : NSObject 

// Creates a new account object with a specified account type. 
- (id)initWithAccountType:(ACAccountType *)type; 

// This identifier can be used to look up the account using [ACAccountStore accountWithIdentifier:]. 
@property (readonly, weak, NS_NONATOMIC_IOSONLY) NSString  *identifier; 

// Accounts are stored with a particular account type. All available accounts of a particular type 
// can be looked up using [ACAccountStore accountsWithAccountType:]. When creating new accounts 
// this property is required. 
@property (strong, NS_NONATOMIC_IOSONLY) ACAccountType  *accountType; 

// A human readable description of the account. 
// This property is only available to applications that have been granted access to the account by the user. 
@property (copy, NS_NONATOMIC_IOSONLY)  NSString   *accountDescription; 

// The username for the account. This property can be set and saved during account creation. The username is 
// only available to applications that have been granted access to the account by the user. 
@property (copy, NS_NONATOMIC_IOSONLY)  NSString   *username; 

// The credential for the account. This property can be set and saved during account creation. It is 
// inaccessible once the account has been saved. 
@property (strong, NS_NONATOMIC_IOSONLY) ACAccountCredential *credential; 

@end 

Answer 2

你導入ACAccount.h直接？如果是這樣，不要這樣做。只導入頂級標頭 - 在這種情況下，這將是<Accounts/Accounts.h>。

Answer 3

在我的情況下，它並不是我修改AcAccount.h，這很難，因爲Xcode提醒你不擁有該文件，問題是我不小心修改'main.c'，而不是提供錯誤我意外地修改它的那條線給出了這個誤導性的信息。