创建一个文件并写入内容，比如在桌面上创建一个文件 lff.txt，并写入内容:My name is LFF:

NSString *str = @”My name is LFF”; NSError *error;BOOL isWritSuccess = [str writeToFile:@”/User/LFF/Desktop/lff.txt” atomically:YES encoding:NSUTF8StringEncoding error:&error];if (isWritSuccess) {   NSLog(@”创建成功”); }else {   NSLog(@”error %@”,error);}

通过上面代码成功创建了一个文件，下面步入正题:

1、打印文件创建日期与大小

NSFileManager * fileManager = [NSFileManager defaultManager];NSString * path = @"/ User/LFF/Desktop/lff.txt ";NSError * error;NSDictionary * dic = [fileManager attributesOfItemAtPath:path error:&error];NSLog(@"dic %@",dic); if (error == nil){    NSDate * date = [dic objectForKey:NSFileCreationDate];     NSString * size = [dic objectForKey:NSFileSize];     NSLog(@" date = %@, size = %@",date,size);}

2、获得目录下的文件与子文件目录列表

(1)获得目标目录下,第一级目录

NSFileManager * fileManager = [NSFileManager defaultManager]; NSString * path = @"/Users/aplle/Desktop/Myfile";NSError * error;NSArray * array = [fileManager contentsOfDirectoryAtPath:path error:&error];NSLog(@"array %@",array);

(2)逐级获得所有子集的目录

NSFileManager * fileManager = [NSFileManager defaultManager]; NSString * path = @"/Users/aplle/Desktop/other";NSError * error;NSArray * array = [fileManager subpathsOfDirectoryAtPath:path error:&error];NSLog(@"array %@",array);

3、管理目录

(1)创建目录

NSFileManager * fileManager = [NSFileManager defaultManager];NSString * path = @"/Users/LFF/Desktop/myfolder/aaa";NSError * error;/*withIntermediateDirectories 参数:YES 逐级创建文件夹NO 表示只能够创建一级目录*/BOOL isCreateSuccess = [fileManager createDirectoryAtPath:path withIntermediateDirectories:YES attributes:nil error:&error];if (isCreateSuccess) {    NSLog(@"创建成功");}else {    NSLog(@"error %@",error); }

（2)移动目录 移动就是剪切操作

NSFileManager * fileManager = [NSFileManager defaultManager];NSString * path = @"/Users/aplle/Desktop/myfolder";NSString * pathTo = @"/Users/aplle/Desktop/newmyfolder";NSError * error ;BOOL isMoveSuccess = [fileManager moveItemAtPath:path toPath:pathTo error:&error]; if (isMoveSuccess){    NSLog(@"移动成功");} else {    NSLog(@"error %@",error);}

(3)删除

NSFileManager * fileManager = [NSFileManager defaultManager]; NSString * path = @"/Users/aplle/Desktop/newmyfolder"; NSError * error;BOOL isRemoveSuccess =[fileManager removeItemAtPath:path error:&error];if (isRemoveSuccess){NSLog(@"删除成功");} else {NSLog(@"erro %@",error);}

(4)拷贝文件

NSFileManager * fileManager = [NSFileManager defaultManager];NSString * path = @"/Users/aplle/Desktop/myfolder";NSString * pathTo = @"/Users/aplle/Desktop/newmyfolder";NSError * error;BOOL isCopySuccess = [fileManager copyItemAtPath:path toPath:pathTo error:&error]; if(isCopySuccess){NSLog(@"拷贝成功");} else {NSLog(@"error %@",error);}