我正在更新 SwiftData从 Swift 1.2 到 Swift 2,经过一些更改和更正后,我仍然遇到错误,我无法理解为什么会这样。
代码如下:
public static func saveUIImage(image: UIImage) -> String? {
let docsPath = NSSearchPathForDirectoriesInDomains(NSSearchPathDirectory.DocumentDirectory, NSSearchPathDomainMask.UserDomainMask, true)[0] as String
let imageDirPath = docsPath.stringByAppendingPathComponent("SwiftDataImages")
if !NSFileManager.defaultManager().fileExistsAtPath(imageDirPath) {
do {
try NSFileManager.defaultManager().createDirectoryAtPath(imageDirPath, withIntermediateDirectories: false, attributes: [:])
} catch {
print("Error creating SwiftData image folder")
return nil
}
}
let imageID = NSUUID().UUIDString
let imagePath = (imageDirPath as NSString).stringByAppendingPathComponent(imageID)
let imageAsData = UIImagePNGRepresentation(image)
if !imageAsData!.writeToFile(imagePath, atomically: true) {
print("Error saving image")
return nil
}
return imageID
}
Xcode 在“do {”行抛出以下错误:
Cannot invoke 'createDirectoryAtPath' with an argument list of type '(String, withIntermediateDirectories: Bool, attributes: _, error: _)'
关于为什么会发生这种情况的任何提示?这让我发疯。
谨致问候,并提前致谢。
;)
最佳答案
在我的 Xcode 7.2 中没有:
let imageDirPath = docsPath.stringByAppendingPathComponent("SwiftDataImages")
所以我尝试了这段代码,它编译得很好:
public func saveUIImage(image: UIImage) -> String? {
let docsPath = NSSearchPathForDirectoriesInDomains(NSSearchPathDirectory.DocumentDirectory, NSSearchPathDomainMask.UserDomainMask, true)[0] as String
let imageDirPath = NSURL(string: docsPath)?.URLByAppendingPathComponent("SwiftDataImages")
if !NSFileManager.defaultManager().fileExistsAtPath(imageDirPath!.absoluteString) {
do {
try NSFileManager.defaultManager().createDirectoryAtPath(imageDirPath!.absoluteString, withIntermediateDirectories: false, attributes: [:])
} catch {
print("Error creating SwiftData image folder")
return nil
}
}
let imageID = NSUUID().UUIDString
let imagePath = (imageDirPath!.absoluteString as NSString).stringByAppendingPathComponent(imageID)
let imageAsData = UIImagePNGRepresentation(image)
if !imageAsData!.writeToFile(imagePath, atomically: true) {
print("Error saving image")
return nil
}
return imageID
}
关于ios - SwiftData 错误 NSFileManager,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/34471005/