Reading and Writing files in IOS

In iOS, Apple has encapsulated a class and opened the corresponding IPA. The corresponding class is nsfilemanager and the file management class.

Instantiation:

 
Nsfilemanager * manage = [nsfilemanager defaultmanager];
 

Create a file directory

 
[Manage createdirectoryatpath: direcatorypath withintermediatedirectories: Yes attributes: Nil error: Nil];
 

Returns the bool type and determines whether the bool type is successfully created.

If you write data to a file, such as nsdata, you can:

 
Bool iswrite = [_ DATA writetofile: filepath atomically: Yes];
 

Returns the result and determines whether the operation is successful.

Copy an object:

 
-(Bool) copyitematpath :( nsstring *) srcpath topath :( nsstring *) dstpath error :( nserror **) Error ns_available (10_5, 2_0 );
 

Transfer:

-(Bool) moveitematpath :( nsstring *) srcpath topath :( nsstring *) dstpath error :( nserror **) Error ns_available (10_5, 2_0 );
 

Delete:

 
-(Bool) removeitematpath :( nsstring *) path error :( nserror **) Error ns_available (10_5, 2_0 );
 

Whether the file exists:

 
-(Bool) fileexistsatpath :( nsstring *) path;
 

Whether the file can be read:

 
-(Bool) isreadablefileatpath :( nsstring *) path;
 

.... , A series of common uses.