Property requires method to be defined
objective-c, properties
Solution
Is this property on an `NSManagedObject` subclass? `NSManagedObject` disables auto-synthesis precisely because most declared properties are expected to be `@dynamic`.
This is accomplished with the `NS_REQUIRES_PROPERTY_DEFINITIONS` macro placed right before the `@interface NSManagedObject`, which expands to `__attribute__((objc_requires_property_definitions))`. This could be used on other classes too, but `NSManagedObject` is the only framework class I know of that does this.
Problem
I was converting a code from non-ARC to ARC, and removing some unnecessary @synthesize calls. One specific class started issuing warnings for some properties: Class.h ``` @property (strong, nonatomic) NSString *xyz; ``` but when building, I get the warning. ``` Property 'xyz' requires method 'xyz'to be defined - use @synthesize, @dynamic or provide a method implementation in this class implementation ``` I thought that using Xcode 4.6 and and Default Apple LLVM compiler 4.2, the @properties should be auto-synthesized. How do I tell the compiler to auto-synthesize the property? Do I have to use a specific project configuration to remove this warning?