Swift2 '；NSMutableDictionary'；不可转换为'；[NSObject:AnyObject]'；swift 2.0

更新到swift 2.0后
发生了一些以前是正确的错误， 这是代码

let dict = NSMutableDictionary()   
dict[NSLocalizedDescriptionKey] = "Failed to initialize the application's saved data"
dict[NSLocalizedFailureReasonErrorKey] = failureReason   
dict[NSUnderlyingErrorKey] = error      
error = NSError(domain: "YOUR_ERROR_DOMAIN", code: 9999, userInfo: dict as [NSObject: AnyObject])

错误信息如下所示：

'NSMutableDictionary' is not convertible to '[NSObject : AnyObject]'

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你知道如何解决这个问题吗？

我无法重现你的问题，但有几点建议可以完全避免使用

NSMutableDictionary

（从而消除强制转换）：

您可以直接使用Swift

字典

，无需强制转换：

var dict = [NSObject: AnyObject]()
dict[NSLocalizedDescriptionKey]        = "Failed to initialize the application's saved data"
dict[NSLocalizedFailureReasonErrorKey] = failureReason
dict[NSUnderlyingErrorKey]             = error

您还可以在单个语句中声明字典和键/值：

let dict: [NSObject : AnyObject] = [
    NSLocalizedDescriptionKey        : "Failed to initialize the application's saved data",
    NSLocalizedFailureReasonErrorKey : failureReason,
    NSUnderlyingErrorKey             : error
]

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我已经浏览了你的代码，我修改如下。请查看以下代码：

var dict = NSMutableDictionary() as [NSObject : AnyObject]
let error :NSError = {    return NSError(domain: "YOUR_ERROR_DOMAIN", code: 9999, userInfo: dict as [NSObject: AnyObject]) }()

dict[NSLocalizedDescriptionKey] = "Failed to initialize the application's saved data"
dict[NSLocalizedFailureReasonErrorKey] = "hello"
dict[NSUnderlyingErrorKey] = error 

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做一个干净的构建，你的代码对我来说很好。