NSFileManager

//
//  main.m
//  OC3_NSFileManager
//
//  Created by zhangxueming on 15/1/7.
//  Copyright (c) 2015年 zhangxueming. All rights reserved.
//

#import <Foundation/Foundation.h>

//NSFileManager 类是一个单例类

int main(int argc, const char * argv[]) {
    @autoreleasepool {
        //单例类
//        NSFileManager *fm1 = [NSFileManager defaultManager];
//        NSFileManager *fm2 = [NSFileManager defaultManager];
//        NSLog(@"fm1 = %p fm2 = %p", fm1, fm2);
        
        //文件及目录操作
        NSFileManager *fm = [NSFileManager defaultManager];
        //获取指定路径目录下所有文件及目录(遍历指定目录下的文件及目录)
        //第一个参数:目录的路径
        //第二个参数:error对象的地址
        
        NSError *error=nil;
        
        NSArray *fileArr = [fm contentsOfDirectoryAtPath:@"/Users/qianfeng/Desktop/hello" error:&error];
        if (!error) {
            NSLog(@"fileArr = %@", fileArr);
        }
        else
        {
            NSLog(@"error = %@", error);
        }
        error = nil;
        //深层遍历目录
        NSArray *fileArr2 = [fm subpathsOfDirectoryAtPath:@"/Users/qianfeng/Desktop/hello" error:&error];
        if (!error) {
            NSLog(@"%@",fileArr2);
        }
        else
        {
            NSLog(@"error = %@",error);
        }
        
        error = nil;
        //获取属性
//        NSDictionary *fileDic = [fm attributesOfItemAtPath:@"/Users/zhangxueming/Desktop/dictory" error:&error];
//        NSLog(@"%@", fileDic);
//        //[fileDic objectForKey:NSFileSize];
//        //获取文件大小
//        NSLog(@"文件大小= %@", [fileDic objectForKey:NSFileSize]);
//        NSLog(@"文件大小= %lld",[fileDic fileSize]);
        
    }
    return 0;
}