Objective-C NSFileManager 文件管理总结

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createFileAtPath //创建文件

        NSFileManager *fm = [NSFileManager defaultManager];        NSString *strpath = [NSString stringWithFormat:@"%@/file1.txt",NSHomeDirectory()];        NSString *strdata = @"test";                bool bRet = [fm createFileAtPath:strpath contents:strdata attributes:nil];        if(!bRet)        {            NSLog(@"create file error");        }

copyItemAtPath //复制文件

        NSFileManager *fm = [NSFileManager defaultManager];        NSString *strpath1 = [NSString stringWithFormat:@"%@/file1.txt",NSHomeDirectory()];        NSString *strpath2 = [NSString stringWithFormat:@"%@/file2.txt",NSHomeDirectory()];                bool bRet = [fm copyItemAtPath:strpath1 toPath:strpath2 error:nil];        if(!bRet)        {            NSLog(@"copy file error");        }

moveItemAtPath //移动文件

        NSFileManager *fm = [NSFileManager defaultManager];        NSString *strpath1 = [NSString stringWithFormat:@"%@/file1.txt",NSHomeDirectory()];        NSString *strpath2 = [NSString stringWithFormat:@"%@/file2.txt",NSHomeDirectory()];                bool bRet = [fm moveItemAtPath:strpath1 toPath:strpath2 error:nil];        if(!bRet)        {            NSLog(@"move file error");        }

removeItemAtPath //删除文件

        NSFileManager *fm = [NSFileManager defaultManager];        NSString *strpath1 = [NSString stringWithFormat:@"%@/file1.txt",NSHomeDirectory()];                bool bRet = [fm removeItemAtPath:strpath1 error:nil];        if(!bRet)        {            NSLog(@"delete file error");        }

attributesOfItemAtPath //获取文件属性，文件大字，返回NSDictionary

        NSFileManager *fm = [NSFileManager defaultManager];        NSString *strpath1 = [NSString stringWithFormat:@"%@/log.txt",NSHomeDirectory()];                NSDictionary *dic = [fm attributesOfItemAtPath:strpath1 error:nil];        NSLog(@"%@",dic);

currentDirectoryPath //获取当前目录

       NSFileManager *fm = [NSFileManager defaultManager];       NSString *strpath = [fm currentDirectoryPath];       NSLog(@"%@",strpath);

createDirectoryAtPath //创建目录

        NSFileManager *fm = [NSFileManager defaultManager];        NSString *strpath1 = [NSString stringWithFormat:@"%@/testdir",NSHomeDirectory()];        bool bRet = [fm createDirectoryAtPath:strpath1 withIntermediateDirectories:NO attributes:nil error:nil];        if(!bRet)        {            NSLog(@"create dir error");        }

fileExistsAtPath //判断文件或目录是否存在

        NSFileManager *fm = [NSFileManager defaultManager];        NSString *strpath1 = [NSString stringWithFormat:@"%@/testdir",NSHomeDirectory()];        bool bRet = [fm fileExistsAtPath:strpath1];        if(!bRet)        {            NSLog(@"no file exist");        }        else        {            NSLog(@"file exist");        }

enumeratorAtPath //枚举目录，将子目录全部枚举

        NSFileManager *fm = [NSFileManager defaultManager];        NSString *strpath1 = [NSString stringWithFormat:@"%@/Desktop",NSHomeDirectory()];        NSDirectoryEnumerator *dirs = [fm enumeratorAtPath:strpath1];                NSString *dir;        while (dir=[dirs nextObject]) {            NSLog(@"%@",dir);        }

contentsOfDirectoryAtPath //枚举目录，不枚举子目录

        NSFileManager *fm = [NSFileManager defaultManager];        NSString *strpath1 = [NSString stringWithFormat:@"%@/Desktop",NSHomeDirectory()];        NSArray *dirs = [fm contentsOfDirectoryAtPath:strpath1 error:nil];                NSString *dir;        for (dir in dirs)        {            NSLog(@"%@",dir);        }

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