Swift 3.0 FileManager.fileExists(atPath:) always return false

Question

When I use method .fileExists(atPath:)to judge whether the file is exist in file system, the method always return false to me. I checked the file system and the file do exist. Here is my code:

let filePath = url?.path var isDir : ObjCBool = false if(self.fileManager.fileExists(atPath: filePath!, isDirectory: &isDir)){      let result = NSData(contentsOfFile: filePath!) } 

or

let filePath = url?.path if(self.fileManager.fileExists(atPath: filePath!)){      let result = NSData(contentsOfFile: filePath!) } 

the if clause will always be skipped.

Answer 1

I assume your url is an URL type. If so try this out:

let filePath = url?.path  // always try to work with URL when accessing Files if(FileManager.default.fileExists(atPath: filePath!)){  // just use String when you have to check for existence of your file     let result = NSData(contentsOf: url!)  // use URL instead of String } 

Saying enough, you should change your implementation like this:

if(FileManager.default.fileExists(atPath: (url?.path)!)){  // just use String when you have to check for existence of your file     let result = NSData(contentsOf: url!)  // use URL instead of String } 

EDIT: 1

There is even more better way, you can call it swift-way (:D). You don't have to explicitly check for file existence.

guard let result = NSData(contentsOf: fileURL) else {     // No data in your fileURL. So no data is received. Do your task if you got no data     // Keep in mind that you don't have access to your result here.     // You can return from here.      return } // You got your data successfully that was in your fileURL location. Do your task with your result. // You can have access to your result variable here. You can do further with result constant. print(result) 

---

Update for Swift 3.0+ without the Objective-Cish NS prefix:

do {     let result = try Data(contentsOf: fileURL)     print(result) } catch {     print(error) }