How do you set an integer in CFPreferencesSetAppValue?

Question

I have some problem to write an integer value to the preferences using this:

CFPreferencesSetAppValue(CFSTR("theKey"), CFSTR("0"),(CFStringRef)theID);

The code above will write into preferences as string, how to instead write it as an integer (and so does boolean)?

Thanks in advance!

Answer 1

For booleans, you use CFBoolean (the two values of which are kCFBooleanTrue and kCFBooleanFalse ). For other numbers, you use CFNumber .

Since your question is tagged for Objective-C, you can use (CFTypeRef)@YES , (CFTypeRef)@NO , and/or (CFTypeRef)@(<expr>) to create the objects.

And, of course, if you're setting preferences for the current app, using NSUserDefaults is more natural.