Question

我已创建了保存按钮，我想创建一个.csv文件来存储屏幕上的x，y和对象名称，因为我无法检查它，因为我无法访问其创建的文件

    @IBAction func saveButton(_ sender: Any) {
    let objectsName = stringObjectName.joined(separator: ",")
    let coX = stringObjectX.joined(separator: ",")
    let coY = stringObjectY.joined(separator: ",")

    let fileName = getDocumentsDirectory().appendingPathComponent("output.csv")
    CSVFilesName.append(fileName)

    var csvText = "Name, Data X, Data Y\n"

    let count = stringObjectName.count

    if count > 0 {
        for _ in 0..<(stringObjectName.count-1) {
            let newLine = "\(objectsName),\(coX),\(coY)\n"

            csvText.append(contentsOf: newLine)
        }
    }

    do {
        try csvText.write(to: fileName, atomically: true, encoding: String.Encoding.utf8)
    } catch {
        print("error")
    }

    print(fileName)
}

之后我尝试访问文件调用“output.csv”，它假定存储在另一个视口的文档目录中。因此，我创建了方法，通过使用和存储CSVFile

将方法从另一个视图控制器传递到当前视图控制器

 var CSVFileName = [URL]()

    func assignArray() {

    let cameraVC = CameraViewController()
    CSVFileName = cameraVC.CSVFilesName
    print(CSVFileName)

}

问题从这里开始，因为我有一个数组，假设在String

中存储文件名

 let fileNames = ["sth1.csv", "sth2.csv"]

但我找不到将CSVFileName从保存按钮转换为String，并将“静态数组”替换为“动态数组”并更改下面的方法以获取来自FileManager（）。default.url而不是fileURL的URL，以显示和访问TableViewController数据

     private func prepareFileURLS() {
    for file in fileNames {
        let fileParts = file.components(separatedBy: ".")
        print(fileParts[0])
        if let fileURL = Bundle.main.url(forResource: fileParts[0], withExtension: fileParts[1]) {
            if FileManager.default.fileExists(atPath: fileURL.path) {
                print(fileURL)
                fileURLs.append(fileURL as NSURL)
            }
        }
    }
    print(fileURLs)
}

Answer 1

以下是您阅读CSV文件的方式：

func filterMenuCsvData()
        {
          do {
                // This solution assumes  you've got the file in your bundle
                if let path = Bundle.main.path(forResource: "products_category", ofType: "csv"){
                    // STORE CONTENT OF FILE IN VARIABLE 
                    let data = try String(contentsOfFile:path, encoding: String.Encoding.utf8)
                    var rows : [String] = []
                    var readData =  [String]()
                    rows = data.components(separatedBy: "\n")
                    for data in 0..<rows.count - 1{
                        if data == 0 || rows[data].contains(""){
                          continue
                        }
                        readData = rows[data].components(separatedBy: ",")
                        Category.append(readData[0])
                        if readData[2] != ""{
                        Occassions.append(readData[2])
                        }
                       selectedOccassionsRadioButtonIndex = Array(repeating: false, count: Occassions.count)
                       selectedCategoryRadioButtonIndex = Array(repeating: false, count: Category.count)
                    }
               }
            } catch let err as NSError {
                // do something with Error}
            print(err)
        }
    }

如何通过数组访问.csv文件目录

1 个答案: