本文介绍了类型“AnyObject”不符合协议“SequenceType”的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
func loadThumbnails(){
let paths = NSSearchPathForDirectoriesInDomains(NSSearchPathDirectory.DocumentDirectory,NSSearchPathDomainMask.UserDomainMask,true)
let documentsDirectory:NSString = paths [0]作为NSString
var错误:NSError?
让fileManager = NSFileManager()
让directoryContent:AnyObject = fileManager.contentsOfDirectoryAtPath(documentsDirectory,error:& error)!
thumbnails = [QSPhotoInfo]()
for item:目录内容中的AnyObject {
让fileName = item作为NSString
如果fileName.hasPrefix(kThumbnailImagePrefix ){
let image = loadImageFromDocumentsDirectory(fileName)
var photoInfo = QSPhotoInfo()
photoInfo.thumbnail = image;
photoInfo.thumbnailFileName = fileName
thumbnails + = photoInfo
}
}
}
编译错误如下:
这是什么菜单?
谁可以帮助我,很多!!!!
解决方案
苹果在:
现在, directoryContent
只符合协议 AnyObject
,所以你不能在它上面使用for循环。如果你想这样做,你必须做类似于以下内容的:
对于directoryContent中的项为[AnyObject] {
//做东西
}
func loadThumbnails() {
let paths = NSSearchPathForDirectoriesInDomains(NSSearchPathDirectory.DocumentDirectory, NSSearchPathDomainMask.UserDomainMask, true)
let documentsDirectory:NSString = paths[0] as NSString
var error:NSError?
let fileManager = NSFileManager()
let directoryContent:AnyObject = fileManager.contentsOfDirectoryAtPath(documentsDirectory, error: &error)!
thumbnails = [QSPhotoInfo]()
for item:AnyObject in directoryContent {
let fileName = item as NSString
if fileName.hasPrefix(kThumbnailImagePrefix) {
let image = loadImageFromDocumentsDirectory(fileName)
var photoInfo = QSPhotoInfo()
photoInfo.thumbnail = image;
photoInfo.thumbnailFileName = fileName
thumbnails += photoInfo
}
}
}
the compile error is below:
what does this menas?
who can help me ,thks a lot!!!!
解决方案
Apple states in The Swift Programming Language:
Right now, directoryContent
is just conforming to protocol AnyObject
, so you can't use for loops over it. If you want to do so, you have to do something similar to the following:
for item in directoryContent as [AnyObject] {
//Do stuff
}
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