美文网首页
Swift 获取文件大小

Swift 获取文件大小

作者: WMSmile | 来源:发表于2019-12-02 11:11 被阅读0次

    最近在项目里面,有做的获取文件大小的功能。所以就在在这儿分享一下。

    swift3.0

    func sizeForLocalFilePath(filePath:String) -> UInt64 {
        do {
            let fileAttributes = try FileManager.default.attributesOfItem(atPath: filePath)
            if let fileSize = fileAttributes[FileAttributeKey.size]  {
                return (fileSize as! NSNumber).uint64Value
            } else {
                print("Failed to get a size attribute from path: \(filePath)")
            }
        } catch {
            print("Failed to get file attributes for local path: \(filePath) with error: \(error)")
        }
        return 0
    }
    func covertToFileString(with size: UInt64) -> String {
        var convertedValue: Double = Double(size)
        var multiplyFactor = 0
        let tokens = ["bytes", "KB", "MB", "GB", "TB", "PB",  "EB",  "ZB", "YB"]
        while convertedValue > 1024 {
            convertedValue /= 1024
            multiplyFactor += 1
        }
        return String(format: "%4.2f %@", convertedValue, tokens[multiplyFactor])
    }
    

    参考文章get-file-size-in-swift

    另外一种获取方法 通过data的大小转换成size

    swift 4.0

    /// get file size
    ///
    /// - Parameter url: url
    /// - Returns: Double file size
    class func wm_getFileSize(_ url:String) -> Double {
        if let fileData:Data = try? Data.init(contentsOf: URL.init(fileURLWithPath: url)) {
            let size = Double(fileData.count) / (1024.00 * 1024.00)
            return size
        }
        return 0.00
    }
    

    相关文章

      网友评论

          本文标题:Swift 获取文件大小

          本文链接:https://www.haomeiwen.com/subject/zlmxgctx.html