stringByAppendingPathComponent不可用
stringByAppendingPathComponent不可用
提问于 2015-09-10 20:16:11
我的应用程序在Instagram上分享照片，为了做到这一点，它首先将其保存在一个临时目录中：
let writePath = NSTemporaryDirectory().stringByAppendingPathComponent("instagram.igo")它可以在Swift 1.2上工作，但不能在Swift 2.0上工作。
给定的错误消息为：
stringByAppendingPathComponent不可用:请改用NSURL上的URLByAppendingPathComponent。
回答 11
Stack Overflow用户
回答已采纳
发布于 2015-09-10 20:30:39
看起来stringByAppendingPathComponent方法在Swift 2.0中被删除了，所以错误消息建议使用：
let writePath = NSURL(fileURLWithPath: NSTemporaryDirectory()).URLByAppendingPathComponent("instagram.igo")更新：
URLByAppendingPathComponent()已被appendingPathComponent()取代，因此请执行以下操作：
let writePath = NSURL(fileURLWithPath: NSTemporaryDirectory()).appendingPathComponent("instagram.igo")Stack Overflow用户
发布于 2015-09-10 20:24:52
它适用于NSString，所以你可以这样使用它：
extension String {
func stringByAppendingPathComponent(path: String) -> String {
let nsSt = self as NSString
return nsSt.stringByAppendingPathComponent(path)
}
}现在您可以使用此扩展，它将首先将您的String转换为NSString，然后执行操作。
你的代码将是：
let writePath = NSTemporaryDirectory().stringByAppendingPathComponent("instagram.igo")下面是一些其他的使用方法：
extension String {
var lastPathComponent: String {
return (self as NSString).lastPathComponent
}
var pathExtension: String {
return (self as NSString).pathExtension
}
var stringByDeletingLastPathComponent: String {
return (self as NSString).stringByDeletingLastPathComponent
}
var stringByDeletingPathExtension: String {
return (self as NSString).stringByDeletingPathExtension
}
var pathComponents: [String] {
return (self as NSString).pathComponents
}
func stringByAppendingPathComponent(path: String) -> String {
let nsSt = self as NSString
return nsSt.stringByAppendingPathComponent(path)
}
func stringByAppendingPathExtension(ext: String) -> String? {
let nsSt = self as NSString
return nsSt.stringByAppendingPathExtension(ext)
}
}来自HERE的引用。
对于swift 3.0：
extension String {
func stringByAppendingPathComponent1(path: String) -> String {
let nsSt = self as NSString
return nsSt.appendingPathComponent(path)
}
}
let writePath = NSTemporaryDirectory().stringByAppendingPathComponent(path: "instagram.igo")
extension String {
var lastPathComponent: String {
return (self as NSString).lastPathComponent
}
var pathExtension: String {
return (self as NSString).pathExtension
}
var stringByDeletingLastPathComponent: String {
return (self as NSString).deletingLastPathComponent
}
var stringByDeletingPathExtension: String {
return (self as NSString).deletingPathExtension
}
var pathComponents: [String] {
return (self as NSString).pathComponents
}
func stringByAppendingPathComponent(path: String) -> String {
let nsSt = self as NSString
return nsSt.appendingPathComponent(path)
}
func stringByAppendingPathExtension(ext: String) -> String? {
let nsSt = self as NSString
return nsSt.appendingPathExtension(ext)
}
}Stack Overflow用户
发布于 2015-09-21 10:01:57
只需将字符串包装为NSString即可。
let writePath = (NSTemporaryDirectory() as NSString).stringByAppendingPathComponent("instagram.igo")页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/32501627
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