块类型的Objective-C属性的语法(不带typedef)

Question

声明引用块的属性的语法是:

typedef void (^voidBlock)();
@property (nonatomic, copy) voidBlock callback;
...
@synthesize callback;

如果没有typedef怎么办呢？

Answer 1

@property (nonatomic, copy) void (^callback)();