Error while using getResourceValue:forKey method in NSURL

I am trying to fetch the file size attribute from a NSURL object by passing it getResourceValue:forKey method. Here is the code i am writing:

NSURL *samplePath = [[NSURL alloc] initWithString:@"file://localhost/Users/Abhinav/Test/abhi.pdf"];
[samplePath getResourceValue:&name forKey:NSURLFileSizeKey error:&error];
NSLog(@"Error===%@",error);
NSLog(@"name===%@",name);

But i am getting following error:

Error Domain=NSPOSIXErrorDomain Code=17 "T开发者_开发百科he operation couldn’t be completed. File exists"

Please assist.

---

What type is name in your example? You should be passing in the address of the variable where you want the size to be stored:

NSURL *samplePath = [[NSURL alloc initWithString:@"file://localhost/Users/Abhinav/Test/abhi.pdf"];
NSNumber *fileSizeBytes;
[samplePath getResourceValue:&fileSizeBytes forKey:NSURLFileSizeKey error:&error];
NSLog(@"Error===%@",error); NSLog(@"size of file in bytes ===%@",fileSizeBytes);

---

If you are trying to get the file size of a local file, see NSFileManager

For example, to get the size of a file: int size = [[[NSFileManager defaultManager] attributesOfItemAtPath:@"/Users/Abhinav/Test/abhi.pdf" error:NULL] fileSize]; should work (and will set size to 0 if the file does not exist, or is not readable).