Get the extension of a file contained in an NSString

Question

I have an NSMutable dictionary that contains file IDs and their filename+extension in the simple form of fileone.doc or filetwo.pdf. I need to determine what type of file it

Answer 1

In Swift 3 you could use an extension:

extension String {

public func getExtension() -> String? {

        let ext = (self as NSString).pathExtension

        if ext.isEmpty {
            return nil
        }

        return ext
    }
}

Answer 2

Try this, it works for me.

NSString *fileName = @"yourFileName.pdf";
NSString *ext = [fileName pathExtension];

Documentation here for NSString pathExtension

Answer 3

You're looking for [fileType pathExtension]

NSString Documentation: pathExtension

Answer 4

Try using [fileType pathExtension] to get the extension of the file.

Answer 5

//NSURL *url = [NSURL URLWithString: fileType];
NSLog(@"extension: %@", [fileType pathExtension]);

Edit you can use pathExtension on NSString

Thanks to David Barry

Answer 6

Try this :

NSString *fileName = @"resume.doc";  
NSString *ext = [fileName pathExtension];