扩展到list FileSize？

Question

我只是在学习Objective-C / Cocoa，我有点不确定如何扩展我的代码来显示找到的文件的大小。

编辑2

我已经从下面的SMorgan & Peter那里获取了注释，并将它们写入代码中……欢迎发表评论。

// ------------------------------------------------------------------- **
// DISC: FILEWALKER ..... (cocoa_fileWalker.m)
// DATE: 28th September 2009
// DESC: List all "*.exr" files in specified directory
// ------------------------------------------------------------------- **

#import <Foundation/Foundation.h>

int main (int argc, const char * argv[]) {
    NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];

    NSString *fileName;
    NSDictionary *attrDir;
    NSError *myError;
    NSNumber *fileSize;
    NSFileManager *manager = [NSFileManager defaultManager];
    NSString *rootPath = [@"~/Pictures" stringByExpandingTildeInPath];
    NSMutableArray *fileArray = [[NSMutableArray alloc] init];
    NSMutableString *newPath = [[NSMutableString alloc] init];

    NSLog(@"Home: %@",rootPath);

    for(fileName in [manager enumeratorAtPath:rootPath]){
        if ([[fileName pathExtension] isEqual:@"exr"]) {
            [fileArray addObject:fileName];

            [newPath setString:rootPath];
            [newPath appendString:@"/"];
            [newPath appendString:fileName];
            attrDir = [manager attributesOfItemAtPath:newPath error:&myError];
            fileSize = [attrDir objectForKey: @"NSFileSize"];
            NSLog(@"File: /%@ Size: %@", fileName, fileSize);
        }
    }

    [fileArray release];
    [newPath release];
    [pool drain];
    return 0;
}
// ------------------------------------------------------------------- **

干杯加里

Answer 1

您可以使用-[NSFileManager fileAttributesAtPath:traverseLink:] (或者如果您只针对10.5+、-[NSFileManager attributesOfItemAtPath:error:])，然后从返回的字典中读取NSFileSize。