OC5_NSFileManger

//
//  main.m
//  OC5_NSFileManger
//
//  Created by zhangxueming on 15/6/19.
//  Copyright (c) 2015年 zhangxueming. All rights reserved.
//

#import <Foundation/Foundation.h>
//NSFileManager 是一个单例类

int main(int argc, const char * argv[]) {
    @autoreleasepool {
        //创建文件管理器对象
        NSFileManager *fm1 = [NSFileManager defaultManager];
        NSFileManager *fm2 = [NSFileManager defaultManager];
        NSFileManager *fm3 = [NSFileManager defaultManager];
        NSLog(@"fm1 = %p fm2 = %p fm3 = %p", fm1, fm2, fm3);

        //浅层遍历目录
        //- (NSArray *)contentsOfDirectoryAtPath:(NSString *)path error:(NSError **)error
        //path: 目录的路径
        //error: 打开目录出错, 会创建一个NSError对象

        NSError *dicError=nil;
        NSArray *dicArray = [fm2 contentsOfDirectoryAtPath:@"/Users/zhangxueming/Desktop/Test" error:&dicError];
        if (dicArray) {
            NSLog(@"dicArray = %@", dicArray);
        }
        else{
            NSLog(@"error = %@", dicError);
        }
        //获取文件的扩展名

        for (NSString *obj in dicArray) {
            NSLog(@"name = %@", [obj pathExtension]);
        }

        //深层遍历目录
        //- (NSArray *)subpathsOfDirectoryAtPath:(NSString *)path error:(NSError **)error
        dicError = nil;
        NSArray *dicArray2 = [fm3 subpathsOfDirectoryAtPath:@"/Users/zhangxueming/Desktop/Test" error:&dicError];
        if (dicArray2) {
            NSLog(@"dicArray2 = %@", dicArray2);
        }
        else
        {
            NSLog(@"%@", dicError);
        }
    }
    return ;
}