How do I work around deprecated properties/methods with (possibly non-object) arguments?

Question

My goal is to achieve compatibility across 3.x SDK versions for UIImagePickerController and it's allows(Image)Editing property.

// SDK 2.0 to 3.0
myImagePickerController.allowsImageEditing = YES;

// SDK 3.1
myImagePickerController.allowsEditing = YES;

Some research reveals some objective-c approaches, but what is considered best practice for handling deprecated methods?

1. performSelector or NSInvocation for non-object arguments

2. #define approach

3. Any other recommended strategies...

Answer 1

wrap them in a @try @catch block to ensure a working feature regardless of a deprecated method.

Answer 2

NSString * key = @"allowsEditing";
if ([myImagePickerController respondsToSelector:@selector(setAllowsImageEditing:)]) {
  key = @"allowsImageEditing";
}
[myImagePickerController setValue:[NSNumber numberWithBool:YES] forKey:key];