CODEWITHSUNDEEP
iphoneobjective-ciosfilesize
Alex Stone
Alex Stone

Reputation: 47354

iOS recursive folder size

I'm storing files in a local documents directory, separated by folders. Is there an easy way for me to get the file size of the contents of the documents directory and all subdirectories on an iPhone?

I can manually iterate over folders and keep adding file size, but I'm hoping there's something cleaner and more efficient.

Thank you !

Upvotes: 5

Views: 3166

Answers (2)

Dmytro Mykhailov
Dmytro Mykhailov

Reputation: 249

You can recursively go over all folders and get the size. Like this:

+(NSUInteger)getDirectoryFileSize:(NSURL *)directoryUrl
{
    NSUInteger result = 0;
    NSArray *properties = [NSArray arrayWithObjects: NSURLLocalizedNameKey,
                           NSURLCreationDateKey, NSURLLocalizedTypeDescriptionKey, nil];

    NSArray *array = [[NSFileManager defaultManager]
                      contentsOfDirectoryAtURL:directoryUrl
                      includingPropertiesForKeys:properties
                      options:(NSDirectoryEnumerationSkipsHiddenFiles)
                      error:nil];

    for (NSURL *fileSystemItem in array) {
        BOOL directory = NO;
        [[NSFileManager defaultManager] fileExistsAtPath:[fileSystemItem path] isDirectory:&directory];
        if (!directory) {
            result += [[[[NSFileManager defaultManager] attributesOfItemAtPath:[fileSystemItem path] error:nil] objectForKey:NSFileSize] unsignedIntegerValue];
        }
        else {
            result += [CacheManager getDirectoryFileSize:fileSystemItem];
        }
    }

    return result;
}

Upvotes: 5

voromax
voromax

Reputation: 3389

The approach and efficiency vary depends on the iOS version. For iOS 4.0 and later you can make a category on NSFileManager with something like this:

- (unsigned long long)contentSizeOfDirectoryAtURL:(NSURL *)directoryURL
{
    unsigned long long contentSize = 0;
    NSDirectoryEnumerator *enumerator = [self enumeratorAtURL:directoryURL includingPropertiesForKeys:[NSArray arrayWithObject:NSURLFileSizeKey] options:NSDirectoryEnumerationSkipsHiddenFiles errorHandler:NULL];
    NSNumber *value = nil;
    for (NSURL *itemURL in enumerator) {
        if ([itemURL getResourceValue:&value forKey:NSURLFileSizeKey error:NULL]) {
            contentSize += value.unsignedLongLongValue;
        }
    }
    return contentSize;
}

Upvotes: 5

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