iphone - how to check if the file is a directory , audio , video or image?

Sample Code :

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);NSString *documentsDirectory = [paths objectAtIndex:0];NSArray *directory = [[NSFileManager defaultManager] directoryContentsAtPath: documentsDirectory];BOOL isDirectory;for (NSString *item in directory){    BOOL fileExistsAtPath = [[NSFileManager defaultManager] fileExistsAtPath:item isDirectory:&isDirectory];    if (fileExistsAtPath) {       if (isDirectory)       {           //It's a Directory.       }    }    if ([[item pathExtension] isEqualToString:@"png"]) {       //This is Image File with .png Extension    }}

You can also use Uniform Type Identifiers as explained by Bavarious here.

Sample Code :

NSString *file = @"…"; // path to some fileCFStringRef fileExtension = (CFStringRef) [file pathExtension];CFStringRef fileUTI = UTTypeCreatePreferredIdentifierForTag(kUTTagClassFilenameExtension, fileExtension, NULL);if (UTTypeConformsTo(fileUTI, kUTTypeImage)) NSLog(@"It's an image");else if (UTTypeConformsTo(fileUTI, kUTTypeMovie)) NSLog(@"It's a movie");else if (UTTypeConformsTo(fileUTI, kUTTypeText)) NSLog(@"It's text");CFRelease(fileUTI);

Look at the NSURL class. You can for example see if the url is a file url by saying isFileUrl.

Additionally you can get the last component of the url (usually the file name) by doing:

NSString *filename = [[url path] lastPathComponent];

These can help you do what you need, but more importantly look at the NSURL documentation.

For any Swift lovers, coming to this question trying to check if a file is a directory here you go:

////// Check if NSURL is a directory///internal func fileIsDir(fileURL: NSURL) -> Bool {    var isDir: ObjCBool = false;    fileManager.fileExistsAtPath(fileURL.path!, isDirectory: &isDir)    return Bool(isDir);}////// Check if a path is a directory///internal func fileIsDir(path: String) -> Bool {    var isDir: ObjCBool = false;    fileManager.fileExistsAtPath(path, isDirectory: &isDir)    return Bool(isDir);}

(Note that I tried doing return isDir as Bool but it didn't work. But the above Bool initiation seems to work.)