查找沙盒目录下文件夹地址

//documents

    let documents = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)
    print(documents[0])
    //library
    
    let library = NSSearchPathForDirectoriesInDomains(.libraryDirectory, .userDomainMask, true)
    print(library[0])
    //library/cache
    let cache = NSSearchPathForDirectoriesInDomains(.cachesDirectory, .userDomainMask, true)
    print(cache[0])
    //library/preferences
    let preferences = library[0] + "/Preferences"
    print(preferences)
    //tmp
    let tmp = NSTemporaryDirectory()
    print(tmp)
    
    //NSHomeDirectory() 沙盒根目录
    let tmp1 = NSHomeDirectory() + "/tmp"
    print(tmp1)