关于引用计数问题

Question

@interfaceViewController()
@property(strong,nonatomic)WeakView*weakView;
@end
WeakView*view=[[WeakViewalloc]init];
[self.viewaddSubview:view];
self.weakView=view;
NSLog(@"count:---%ld",CFGetRetainCount((__bridgeCFTypeRef)_weakView));
NSLog(@"count:---%ld",CFGetRetainCount((__bridgeCFTypeRef)self.weakView));
为什么打印是3和4

Answer 1

self.weakView等效于如下代码：-(WeakView*)weakView{return[[_weakViewretain]autorelease];}下个循环回来就回到3了

Answer 2

我理解的是WeakView*+1，addSubView+1，然后self.weakView=view是strong的再+1，所以是3……至于为什么是4是楼上说的吧~