如何在iOS项目中获取项目文件的路径？

Question

If I add a CSV file into my iOS-project. How can I reference that file as the path, for a CSVReader to find the file?

At the moment I just drag the file into the Project-Folder in Xcode. The file is there, but then I need to tell the InputStream(fileAtPath: "/path/to/file.csv")!

How can I tell the InputStream where that path is? Earlier for the simulator I just used the file-path in computer. But that won't work when I try on a physical device of course.

Any suggestions?

Code:

        // Get file
        let stream = InputStream(fileAtPath: "file.csv")!  // Error since no idea where to look for file!
        let csv = try! CSVReader(stream: stream)
        while let row = csv.next(){

        // Handle results
        }

Answer 1

If the file is in the application bundle it's located in the Resources folder.

You have to ask Bundle for its URL (file paths are discouraged nowadays).

let fileURL = Bundle.main.url(forResource: "file", withExtension: "csv")!
let stream = InputStream(url: fileURL)!