一、简单展示NSFileManager的使用
#import
<Foundation/Foundation.h>
int
main(
int
argc,
const
char
*
argv[])
{
@autoreleasepool {
//
创建文件管理对象
NSFileManager *fm =
[NSFileManager defaultManager];
//
要操作的文件名
NSString *fname =
@"
myfile
"
;
//
获取文件的字典
NSDictionary *
attr;
//
当前路径
NSString *
path;
//
获取当前路径
path =
[fm currentDirectoryPath];
//
NSLog(@"\nThe current path is : %@", path);
//
检测文件是否存在
if
([fm fileExistsAtPath: fname] ==
NO) {
//
如果不存在则建立一个文件
[fm createFileAtPath: fname contents: NULL attributes:nil];
//
NSLog(@"\nThe file is not exist!");
//
return 0;
}
//
拷贝创建一个新文件， 新文件若已存在则报错
if
([fm copyItemAtPath: fname toPath:
@"
newFile
"
error: NULL] ==
NO) {
NSLog(
@"
\n Can't copy the file
"
);
return
1
;
}
//
检测两个文件内容是否相同
if
([fm contentsEqualAtPath: fname andPath:
@"
newFile
"
] ==
NO) {
NSLog(
@"
\nThe contents is not same
"
);
return
2
;
}
//
移动或者改名文件
if
([fm moveItemAtPath:
@"
newFile
"
toPath:
@"
myFile2
"
error:NULL] ==
NO) {
NSLog(
@"
\nCan't change the name
"
);
return
3
;
}
//
获取文件数据字典
if
((attr = [fm attributesOfItemAtPath: fname error:NULL]) ==
nil) {
NSLog(
@"
\nGet attributets failed
"
);
return
4
;
}
//
文件大小
NSLog(
@"
%@
"
, attr[NSFileSize]);
//
文件类型
NSLog(
@"
%@
"
, attr[NSFileType]);
//
创建者
NSLog(
@"
%@
"
, attr[NSFileOwnerAccountName]);
//
NSLog(
@"
%@
"
, attr[NSFileCreationDate]);
//
显示文件内容
NSLog(
@"
\n Show the file contents
"
);
NSLog(
@"
\n%@
"
, [NSString stringWithContentsOfFile: fname encoding:NSUTF8StringEncoding error:NULL]);
}
return
0
;
}
二、通过NSData完成副本制作
1
int
main(
int
argc,
const
char
*
argv[])
2
{
3
4
@autoreleasepool {
5
//
通过NSDate来完成文件副本制作
6
NSFileManager *fm =
[NSFileManager defaultManager];
7
NSData *
dt;
8
9
dt = [fm contentsAtPath:
@"
myfile
"
];
10
11
if
(dt ==
nil) {
12
NSLog(
@"
Read file failed....
"
);
13
return
0
;
14
}
15
16
//
将缓冲区NSData中的内容复制到文件中
17
if
([fm createFileAtPath:
@"
myFavoriteFile
"
contents: dt attributes:nil] ==
NO) {
18
NSLog(
@"
Creat backups failed
"
);
19
return
1
;
20
}
21
22
//
读出文件内容
23
NSLog(
@"
\n%@
"
, [NSString stringWithContentsOfFile:
@"
myFavoriteFile
"
encoding: NSUTF8StringEncoding error:NULL]);
24
}
25
return
0
;
26
}
三、简单的目录操作
1
#import
<Foundation/Foundation.h>
2
3
int
main(
int
argc,
const
char
*
argv[])
4
{
5
6
@autoreleasepool {
7
NSString *newDir =
@"
newDir
"
;
8
NSString *
currentPath;
9
NSFileManager *fm =
[NSFileManager defaultManager];
10
11
//
获取当前路径
12
currentPath =
[fm currentDirectoryPath];
13
NSLog(
@"
\nCurrentpath is : \n%@
"
, currentPath);
14
15
//
在当前目录下新建一个目录
16
if
([fm createDirectoryAtPath:newDir withIntermediateDirectories:TRUE attributes:nil error:NULL] ==
NO) {
17
NSLog(
@"
\nCouldn't creat the directory...
"
);
18
return
0
;
19
}
20
21
//
更改路径名
22
if
([fm moveItemAtPath: newDir toPath:
@"
changeDir
"
error:NULL] ==
NO) {
23
NSLog(
@"
\nChange directory name failed
"
);
24
return
2
;
25
}
26
27
//
更改当前路径
28
if
([fm changeCurrentDirectoryPath:
@"
changeDir
"
] ==
NO) {
29
NSLog(
@"
\nChange current directory failed
"
);
30
return
1
;
31
}
32
NSLog(
@"
\nAfter change current directory.....
"
);
33
currentPath =
[fm currentDirectoryPath];
34
NSLog(
@"
\nCurrentpath is : \n%@
"
, currentPath);
35
}
36
return
0
;
37
}
