類型'Int'不符合協議'NSCopying'

我正在使用此Custom Collection View Layout實現。我能夠運行在回購的例子就好了，但是當我複製CustomCollectionViewLayout.swift到我自己的項目，我得到的方法Type 'Int' does not conform to protocol 'NSCopying'錯誤類型'Int'不符合協議'NSCopying'

override func layoutAttributesForItemAtIndexPath(indexPath: NSIndexPath) -> UICollectionViewLayoutAttributes? { 
    return self.itemAttributes[indexPath.section][indexPath.row] as? UICollectionViewLayoutAttributes 
}

其中var itemAttributes是NSMutableArray!

的第二個索引[indexPath.row]正在產生錯誤。

任何想法？我試過在快速操場上放置相同的功能，並沒有得到任何錯誤..

更新！ This是一個swiftstub瓦特/我的操場保存在它。它不會因爲Import UIKit的執行，但如下：

let x = collectionViewLayout.itemAttributes[indexPath.section] 
let y = collectionViewLayout.itemAttributes[indexPath.section][indexPath.row] 
print("x's type = \(_stdlib_getDemangledTypeName(x))") 
print("x = \(x)") 
print("y's type = \(_stdlib_getDemangledTypeName(y))") 
print("y = \(y)")

產量：

x's type = __NSArrayM 
x = (
    "<UICollectionViewLayoutAttributes: 0x7fbe6ac041d0> index path: (<NSIndexPath: 0xc000000000000016> {length = 2, path = 0 - 0}); frame = (0 0; 66 30); zIndex = 1024; ", 
    "<UICollectionViewLayoutAttributes: 0x7fbe6ac05030> index path: (<NSIndexPath: 0xc000000000200016> {length = 2, path = 0 - 1}); frame = (65 0; 63 30); zIndex = 1023; ", 
    "<UICollectionViewLayoutAttributes: 0x7fbe6ae1e2a0> index path: (<NSIndexPath: 0xc000000000400016> {length = 2, path = 0 - 2}); frame = (127 0; 65 30); zIndex = 1023; ", 
    "<UICollectionViewLayoutAttributes: 0x7fbe6ac06830> index path: (<NSIndexPath: 0xc000000000600016> {length = 2, path = 0 - 3}); frame = (191 0; 66 30); zIndex = 1023; ", 
    "<UICollectionViewLayoutAttributes: 0x7fbe6ae21e50> index path: (<NSIndexPath: 0xc000000000800016> {length = 2, path = 0 - 4}); frame = (256 0; 67 30); zIndex = 1023; ", 
    "<UICollectionViewLayoutAttributes: 0x7fbe6ad70f30> index path: (<NSIndexPath: 0xc000000000a00016> {length = 2, path = 0 - 5}); frame = (322 0; 66 30); zIndex = 1023; ", 
    "<UICollectionViewLayoutAttributes: 0x7fbe6ac054e0> index path: (<NSIndexPath: 0xc000000000c00016> {length = 2, path = 0 - 6}); frame = (387 0; 66 30); zIndex = 1023; ", 
    "<UICollectionViewLayoutAttributes: 0x7fbe6ad72420> index path: (<NSIndexPath: 0xc000000000e00016> {length = 2, path = 0 - 7}); frame = (452 0; 65 30); zIndex = 1023; " 
) 
y's type = Swift.ImplicitlyUnwrappedOptional<Swift.AnyObject> 
y = <UICollectionViewLayoutAttributes: 0x7fbe6ac041d0> index path: (<NSIndexPath: 0xc000000000000016> {length = 2, path = 0 - 0}); frame = (0 0; 66 30); zIndex = 1024;

來源

2015-08-08 sawyer

如果將'self.itemAttributes [indexPath.section]'保存到變量中，Swift認爲它的類型是什麼？ –

@PhillipMills我更新了我的問題。這不是奇怪，這是在一個操場上的作品，但不會在我的編輯器編譯？ – sawyer

您正在使用哪種版本的XCode？ – codecowboy

-1

變化override func layoutAttributesForItemAtIndexPath到

override func layoutAttributesForItemAtIndexPath(indexPath: NSIndexPath) -> UICollectionViewLayoutAttributes? { let row = indexPath.row let x : NSMutableArray = self.itemAttributes[indexPath.section] as! NSMutableArray let l = x[row] as? UICollectionViewLayoutAttributes return l }

我今天晚些時候將叉CustomCollectionLayoutView和做一個swift2副本

來源

2015-08-20 10:17:22 sawyer

請你可以添加一個解釋爲什麼這個修復它？ – codecowboy

沒有。 @codecowboy – sawyer

類型'Int'不符合協議'NSCopying'

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