// // main.m // OC10_數組的內存管理 // // Created by zhangxueming on 15/6/18. // Copyright (c) 2015年 zhangxueming. All rights reserved. // #import <Foundation/Foundation.h> #import "Dog.h"int main(int argc, const char * argv[]) {@autoreleasepool {Dog *dog1 = [[Dog alloc] init];Dog *dog2 = [[Dog alloc] init];Dog *dog3 = [[Dog alloc] init];Dog *dog4 = [[Dog alloc] init];Dog *dog5 = [[Dog alloc] init];//往數組中添加對象, 對應對象的retainCount 值+1;NSLog(@"dog1 retainCount = %li", dog1.retainCount);NSMutableArray *dogs = [[NSMutableArray alloc] init];[dogs addObject:dog1];//dogs[0]-->dog1[dogs addObject:dog1];//dogs[1]-->dog1NSLog(@"dog1 retainCount = %li", dog1.retainCount);[dogs addObject:dog2];//dogs[2]-->dog2 [dogs addObject:dog3];[dogs addObject:dog4];[dogs addObject:dog5];[dog1 release];[dog2 release];[dog3 release];[dog4 release];[dog5 release];NSLog(@"dog1 retainCount = %li", dog1.retainCount);//數組對象release 實際上是對數組中的每個一個元素 release 一次 [dogs release];//NSLog(@"dog1 retainCount = %li", dog1.retainCount); }return 0; }

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轉載于:https://www.cnblogs.com/0515offer/p/4586975.html

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