摘要： 此博客用于学习笔记，需要删除请联系我，原文链接 http://www.1000phone.net/thread-7617-1-1.html管理原则：谁用谁retain，谁retain的谁release。1 ClassA *obj1 = [[ClassA alloc] init]; 2 //这里你申请了一块内存地址，指针obj1指向了这块内存地址，同时你给它retain了一下（retain，copy，alloc这几个方法都相当于把retaincount加一），此时obj1所指向的这块内存地址retaincount为1。3 4 ClassA *obj2=obj1;5 [obj2 retain];6 阅读全文

摘要： 此博客用于学习，需要删除请联系我，转载于http://hi.baidu.com/bomblet/blog/item/64c594fd7801c65ad6887d49.html/cmtid/2cdfe41c52efeb9b86d6b66fYou usually need to claim ownership of your instance variables. See the Objective-C memory management rules. With a retain property, your property setter claims ownership of the new 阅读全文