ios - 接口(interface)声明中@property和变量之间的区别

Question

将变量放在 @interface{} 中有何区别？在头文件中声明，并放入 @property在该声明之后？

例如，

@interface GameCenterManager : NSObject
{
GKInvite* pendingInvite;
}
@end

相对于

@interface GameCenterManager : NSObject
@property (weak, nonatomic) GKInvite* pendingInvite
@end

Answer 1

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.

以下是一些提供更多信息的链接。

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