Reading and writing to files in Objective-C

158 Просмотры

  • Спасибо! Поделитесь с друзьями!

    Вам не понравилось видео. Спасибо за то что поделились своим мнением!

admin
Издатель
Subscribe to our channel here for notifications on new video trainings. For more videos on technology, visit our website at http://www.techytube.com.
By pavel@techytube, for more from this author visit:
http://www.techytube.com/author/pavel

In Objective-C we can easily read and write text files by using the NSString class methods, and the way we do that is as follows:

NSString *fileContent = [NSString stringWithContentsOfURL:url encoding:NSUTF8StringEncoding error:nil];

where url is the location of our actual file.



NSUTF8StringEncoding parameter is an Enum values specified by the system and it is widely used for .txt files.


To write strings/text to files we use the following syntax:
[newFileContent writeToURL:
url atomically:YES encoding:NSUTF8StringEncoding error:nil];

where newFileContent is an object of NSString class, "atomically:YES" means that the system will first create a temporary file, and if everything executes successfully, it will rename that to the file in our url.
Категория
Язык программирования Objective-C
Комментариев нет.