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How to use coverted nsstring into FSCreateDirectoryUnicode?

Royce Roy 1252 11-Jan-2016
I'm a beginner in Objective-C, I am trying this code in our app but its not working correctly. I think on calling FSCreateDirectoryUnicode- I don not get the correct length.
Can you tell me how can I get the correct length or what will be the simplest way to do it?
this is my code:
NSString *strObj = @"DirectoryName";
NSData *dataObj = [strObj dataUsingEncoding:NSUnicodeStringEncoding
                          allowLossyConversion:NO];
FSCreateDirectoryUnicode(&aFolderFSRef, [strObj length], [dataObj bytes],
                          kFSCatInfoNone, NULL, &newFolderFSRef, NULL, NULL);
iphone iphone  ios  objective c 
Updated on 13-Jan-2016
Royce Roy

Royce Roy

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1 Answers

Tarun Kumar

Tarun Kumar

13-Jan-2016
I found many issues with your source string data. In Cocoa the easiest way to do that is:
NSString *strObj = @"DirectoryName";
NSString *strPath = [NSHomeDirectory() stringByAppendingPathComponent:strObj];
[[NSFileManager defaultManager] createDirectoryAtPath:strPath attributes:nil];
We can use FSRef for specifying the created directory path. In our example we use home directory instead. If we really use the directory in the FSRef & don't know the path, it will be easier to use the FSCreateDirectoryUnicode function:
Here is the correct encoding of the above code:
NSString *strObj = @"DirectoryName";
const UniChar *name = (const UniChar*)[strObj cStringUsingEncoding:NSUnicodeStringEncoding];
FSCreateDirectoryUnicode(&aFolderFSRef, [strObj length], name, kFSCatInfoNone, NULL, &newFolderFSRef, NULL, NULL);

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