ACAccount.h突发错误

Question

我在我的项目上工作得很好，突然我在我的项目中得到了以下错误。

这是Accounts Framework中的一个问题，我甚至没有接触到它(或任何框架)。尤其是那些文件被锁定之后。

有没有人知道我为什么得到这个以及如何修复它？

对不起，我不能更多地描述，但它突然发生了，我从来没有碰过它。

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Answer 1

在编辑ACAccount.h之后，我得到以下错误。

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打开headers文件夹，选择ACAccount.h，然后按⌘z(撤消)。

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或者将您的ACAccount.h文件与以下代码进行比较

//
//  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

是否直接导入ACAccount.h？如果是这样，请不要这样做。只导入顶级标头-在本例中，它应该是<Accounts/Accounts.h>。

Answer 3

在我的例子中，不是我修改了Account.h，这是困难的，因为Xcode提醒你不拥有那个文件，问题是我意外地修改了'main.c'，而不是在我意外修改的行上给出了一个错误，它给出了误导性的消息。