How to find file UTI for file, withouth pathExtension, in a path in Swift
ios, swift, swift2, uti
Solution
You can use `URL` method `resourceValues(forKeys:)` to get the file `URL TypeIdentifierKey` which returns the file uniform type identifier (UTI). You just need to check if the returned value is "com.apple.m4v-video" for videos, "public.jpeg" or "public.png" for images and so on. You can add a typeIdentifier property extension to URL to return the TypeIdentifierKey string value as follow:
Xcode 11 • Swift 5.1
extension URL {
var typeIdentifier: String? { (try? resourceValues(forKeys: [.typeIdentifierKey]))?.typeIdentifier }
var localizedName: String? { (try? resourceValues(forKeys: [.localizedNameKey]))?.localizedName }
}
Problem
I've been trying to convert this code which I had from this example (in Objective-c) with no luck. ``` String *path; // contains the file path // Get the UTI from the file's extension: CFStringRef pathExtension = (__bridge_retained CFStringRef)[path pathExtension]; CFStringRef type = UTTypeCreatePreferredIdentifierForTag(kUTTagClassFilenameExtension, pathExtension, NULL); CFRelease(pathExtension); // The UTI can be converted to a mime type: NSString *mimeType = (__bridge_transfer NSString *)UTTypeCopyPreferredTagWithClass(type, kUTTagClassMIMEType); if (type != NULL) CFRelease(type); ``` My code is this ``` import MobileCoreServices let path: String? let pathExt = path.pathExtension as CFStringRef let type = UTTypeCreatePreferredIdentifierForTag(kUTTagClassFilenameExtension, pathExtension, NULL); let mimeType = UTTypeCopyPreferredTagWithClass(type, kUTTagClassMIMEType) if type != Null CFRelease(type) ``` All I want to do is find out if a file is an image or a video file