Programmatic Equivalent of “defaults write” command, e.g., how to use NSUserDefaults?

Question

Trying programmatically do what the \'defaults write\' command does in OS X. I can\'t seem to figure out how to get the correct preferences dictionary for the domain I\'m l

Answer 1

The only problem is your line here:

 [dockDict setValue:YES forKey:@"mcx-expose-disabled"];

This should be

 [dockDict setValue:[NSNumber numberWithBool:YES] forKey:@"mcx-expose-disabled"];

Objective-C doesn't "auto-box" values of primitive types into objects.

And, the compiler should have given you a warning saying that you can't pass YES to setValue:forKey:. You should inspect every warning the compiler emits! That's what the warnings are for!

Answer 2

It might be easier to use Core Foundation for this, e.g.,

CFPreferencesSetAppValue( CFSTR("mcx-expose-disabled"), kCFBooleanTrue, CFSTR("com.apple.dock") );
CFPreferencesAppSynchronize( CFSTR("com.apple.dock") );