斯威夫特 - 轉換的AutoreleasingUnsafeMutablePointer <AnyObject?>價值

Question

到目前爲止，我有這樣的代碼：

var thumbnailErr: NSError? 
var thumbnailDictionary: AutoreleasingUnsafeMutablePointer<AnyObject?> = nil 
let getItemSucceeded = url.getPromisedItemResourceValue(thumbnailDictionary, forKey: NSURLThumbnailDictionaryKey, error: &thumbnailErr) 
if getItemSucceeded { 

} 

現在我想轉thumbnailDictionary到字典或NSDictionary中。這就是我如何在Objective-C中做到這一點：

BOOL thumbnailSucceeded = [urlFromPath getPromisedItemResourceValue:thumbnailDictionary forKey:NSURLThumbnailDictionaryKey error:&thumbnailErr]; 
if (thumbnailSucceeded) { 
    NSDictionary *dict = (__bridge NSDictionary *)(void *)thumbnailDictionary; 
} 

我不能爲我的生活弄清楚如何在Swift中做到這一點。幫幫我？

Answer 1

明白了。傳遞AutoreleasingUnsafeMutablePointer是沒有必要的。

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