从Objective-C中的方法返回对象 [英] Returning objects from methods in Objective-C

问题描述

请澄清一下，如何处理方法返回的对象?

Please clarify, how to deal with returned objects from methods?

下面，我从具有自动发布功能的GeEmployeetData函数中获取员工详细信息，

Below, I get employee details from GeEmployeetData function with autorelease,

1. 我是否必须在Process方法中保留返回的对象?

2. 我可以在Process函数中释放* emp吗?

1. Do I have to retain the returned object in Process method?

2. Can I release *emp in Process function?

-(无效)过程 { 员工* emp = [self GeEmployeetData] }

-(void) Process { Employee *emp = [self GeEmployeetData] }

+(Employee *)GeEmployeetData {

+(Employee*) GeEmployeetData{

Employee * emp = [[Employee alloc] init]; //填充实体

Employee *emp = [[Employee alloc]init]; //fill entity

return [emp autorelease]; }

return [emp autorelease]; }

推荐答案

99％的时间，如果要保留其他方法返回的自动释放对象，则应保留它们.

99% of the time you should retain autoreleased objects returned from other methods if you want to keep them around.

对于自动释放的对象，当池耗尽时，将向池中的对象发送release消息. 这就是为什么您有99％的时间要保留自动释放对象的原因，因为获得retainCount大于1的对象的可能性很小.

With autoreleased objects, when the pool is drained, the objects in the pool get sent the release message. That is why 99% of the time you will want to retain autoreleased objects, because the chances of you getting an object with a retainCount of more than 1 is highly unlikely.

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