NSFileSManager：目录文件管理

#import "AppDelegate.h"#define ERROR(a) if(a){NSLog(@"%@",a);exit(-1);}#define PATH @"/Users/huen/Desktop/NSManage"@implementation AppDelegate

NSError *error = nil;    NSFileManager *fm = [NSFileManager defaultManager];//单例对象    /*    NSArray *arr = [fm contentsOfDirectoryAtPath:PATH error:&error];//浅度遍历目录    ERROR(error);//若上句报错，打印错误，退出程序    NSLog(@"%@",arr);    arr = [fm subpathsOfDirectoryAtPath:PATH error:&error];//深度遍历目录    ERROR(error);//若上句报错，打印错误，退出程序    NSLog(@"%@",arr);    */    //创建目录    [fm createDirectoryAtPath:[NSString stringWithFormat:@"%@/middle/dir",PATH]  withIntermediateDirectories:YES//支持创建middle文件                   attributes:nil                        error:&error];    ERROR(error);    //创建文件    [fm createFileAtPath:[NSString stringWithFormat:@"%@/middle/dir/file.rtf",PATH]                contents:[@"hello" dataUsingEncoding:NSUTF8StringEncoding]              attributes:nil];    ERROR(error);    //    [fm copyItemAtPath:[NSString stringWithFormat:@"%@/middle/dir/file.rtf",PATH]                toPath:[NSString stringWithFormat:@"%@/middle/file.rtf",PATH]                 error:&error];    ERROR(error);        [fm moveItemAtPath:[NSString stringWithFormat:@"%@/middle/dir",PATH]                toPath:[NSString stringWithFormat:@"%@/dir",PATH]                 error:&error];    ERROR(error);    //删除//    [fm removeItemAtPath:[NSString stringWithFormat:@"%@/middle/file.rtf",PATH]//                   error:&error];//    ERROR (error);

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NSFileHandle:文件读写操作

//文件写    NSFileHandle *fhw = [NSFileHandle fileHandleForWritingAtPath:@"/Users/huen/Desktop/document.rtf"];    //[fhw truncateFileAtOffset:0];//覆盖写    [fhw seekToEndOfFile];//追加        [fhw writeData:[@"xxx is a good man" dataUsingEncoding:NSUTF8StringEncoding]]; 　　 [fhw closeFile];    //文件读    NSFileHandle *fh = [NSFileHandle fileHandleForReadingAtPath:@"/Users/huen/Desktop/document.rtf"];    NSData *data = [fh readDataToEndOfFile];    NSString *s = [[NSString alloc]initWithData:data encoding:NSUTF8StringEncoding];    NSLog(@"%@",s); 　　[fh closeFile];