Swift获取沙盒中目录的一个分类

最新推荐文章于 2024-07-28 03:16:05 发布

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本文介绍了Swift中如何使用String类型进行文件路径的拼接，并提供了在不同目录（缓存、文档、临时文件）下创建文件路径的实用方法。

1.分类代码：

//
//  String+Category.swift

import UIKit

extension String{

    /**
     将当前字符串拼接到cache目录后面
     */
    func cacheDir() -> String{
        let path = NSSearchPathForDirectoriesInDomains(NSSearchPathDirectory.CachesDirectory, NSSearchPathDomainMask.UserDomainMask, true).last!
        return (path as NSString).stringByAppendingPathComponent((self as NSString).lastPathComponent)
    }

    /**
     将当前字符串拼接到doc目录后面
     */
    func docDir() -> String{
        let path = NSSearchPathForDirectoriesInDomains(NSSearchPathDirectory.DocumentDirectory, NSSearchPathDomainMask.UserDomainMask, true).last!
        return (path as NSString).stringByAppendingPathComponent((self as NSString).lastPathComponent)
    }

    /**
     将当前字符串拼接到tmp目录后面
     */
    func tmpDir() -> String{
        let path = NSTemporaryDirectory() as NSString
        return path.stringByAppendingPathComponent((self as NSString).lastPathComponent)
    }
}

2.应用

/*
         原本：
         let path = NSSearchPathForDirectoriesInDomains(NSSearchPathDirectory.CachesDirectory, NSSearchPathDomainMask.UserDomainMask, true).last!
         let filePath = (path as NSString).stringByAppendingPathComponent("account.plist")
         */
        let filePath = "account.plist".cacheDir()