Objective-C Foundation 架構 Example ：Looking for Files 尋找檔案

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Objective-C Foundation 架構    Example ：Looking for Files  尋找檔案

NSFileManager. The NSFileManager class lets you do stuff with the file system, like create directories, remove files, move files around, and get information about files.

 NSFileManager：讓你處理一些檔案系統的事情，比如建立目錄，移除檔案，移動檔案，擷取檔案的資訊。

 

 

////  main.m//  Helloworld////  Created by kfx on 15-5-4.//  Copyright (c) 2015年 com.MySuperCompany. All rights reserved.// #import <Foundation/Foundation.h> int main(int argc, const char * argv[]) {    @autoreleasepool {        NSFileManager *manager;        manager = [NSFileManager defaultManager];                  NSString *home;        home = [@"~" stringByExpandingTildeInPath];                  NSDirectoryEnumerator *direnum;//目錄枚舉        direnum = [manager enumeratorAtPath:home];                  NSMutableArray *files;        files = [NSMutableArray arrayWithCapacity:42];                  NSString *filename;        while (filename = [direnum nextObject])        {            if ([[filename pathExtension] isEqualTo: @"jpg"]) {                [files addObject: filename];            } }        NSEnumerator *fileenum;        fileenum = [files objectEnumerator];        while (filename = [fileenum nextObject])        {            NSLog (@"%@", filename);        }    }    return 0;}

 

　　

 

    return 0;

}

 

 

 

where in the file system to start looking at files？

Starting from the top level of your hard drive could take a long time, so let‘s just look in your home directory.

在home目錄下開始。

Luckily, Unix (and OS X) has a shorthand character for the home directory, which is ~ (also known as the tilde).

unix 和os x 有一個簡單地字串代表home 目錄。 

Objective-C Foundation 架構 Example ：Looking for Files 尋找檔案