Objective-C学习笔记-之文件查找

Objective-C基础教程中查找文件的源码示例：

NSFileManager * manager = [NSFileManager defaultManager];

    NSString * home = [@"~" stringByExpandingTildeInPath];

    NSDirectoryEnumerator *direnum = [manager enumeratorAtPath: home];

    NSMutableArray * files = [NSMutableArray arrayWithCapacity:32];

    NSString *filename ;

    while(filename = [direnum nextObject])

    {

        if([[filename pathExtension] isEqualTo:@"txt"])

        {

            [files addObject:filename];

        }

    }

    NSEnumerator * fileenum = [files objectEnumerator];

    while(filename = [fileenum nextObject])

    {

        NSLog(@"%@",filename);

    }