What's the difference between putting a variable inside of the @interface{} declaration in a header file, and putting in a @property after that declaration?
E.g.,
@interface GameCenterManager : NSObject
{
GKInvite* pendingInvite;
}
@end
as opposed to
@interface GameCenterManager : NSObject
@property (weak, nonatomic) GKInvite* pendingInvite
@end
Declaring a property generates getters and setters for the instance variable, according to the criteria within the parenthesis.
Defining the variables in the brackets simply declares them instance variables.
Following are some links that provides more info on these.
http://www.cocoawithlove.com/2010/03/dynamic-ivars-solving-fragile-base.html
Is there a difference between an "instance variable" and a "property" in Objective-c?
http://iphonedevelopment.blogspot.in/2008/12/outlets-property-vs-instance-variable.html
@property is enough, it'll create an iVar automatically with a underscore prefix. You can test this with @property (nonatomic) NSString *foo in interface, without synthesize you can get _foo in you implementation.