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 } } }
编译错误如下:
类型“ AnyObject”不符合协议“ SequenceType”
这种压力是什么?
谁能帮我很多忙!
苹果在Swift编程语言中指出:
for-in循环针对范围,序列,集合或进度中的每个项目执行一组语句。
目前,directoryContent它仅符合protocol AnyObject,因此您无法在其上使用for循环。如果要这样做,则必须执行类似以下操作:
directoryContent
AnyObject
for item in directoryContent as [AnyObject] { //Do stuff }