iPhone中的内存管理 [英] Memory Management In iPhone

问题描述

我有一个iPad应用程序，显示了大量信息和相关图像。例如：我可以访问事件部分，我可以从中选择一个。每一个都有不同的日期或会外活动。一旦我选择了会外活动，我会收取一些小视图，其中包含新闻标题;作为预览的小图像和ViewController中的短文本（具有ScrollView）。这个预览可以很多。由于我的代码没有泄漏（我使用Instruments进行分析，而且我能找到的唯一一个是由于NSXMLParser错误），但我注意到实时字节不会减慢，只会增长。每次我必须更新ScrollView的内容时，我会负责插入以下代码：

I have an iPad App which shows a whole load of information and related images. For instance: I can access to the section "Events", from which I can choose one. Every single one has different dates or side events. Once I choose the side event, I charge some small views, which contain the title of the news; a small image as a preview and a short text in a ViewController (which has a ScrollView). This previews can be a lot. There are no leaks due to my code (I analized with Instruments and the only ones I can find are due to NSXMLParser bug), but I have noticed that the live bytes don’t slow down, ever, they only grow. Every time I have to update the content of the ScrollView I take care of inserting the following code:

if ( bannerVideo ) { 
  [banner release]; 
  banner = nil; 
}

你有没有机会知道这种不断增长的原因是什么？ ？

Do you by any chance know what could be the reason for such a constant growth?

推荐答案

已解决

I将ViewControllerbannerVideo添加为主ViewController的子视图。这会导致retainCount增加1。所以，当我要求一个新视图时：

I added the ViewController "bannerVideo" as a subview to the main ViewController. This causes the retainCount to increase by one. So, when I asked for a new view:

if ( something ) {
  [[bannerVideo view] removeFromSuperview];
  [bannerVideo release];
  bannerVideo = nil;
}

是的，bannerVideo的堆区域的主要访问权限已经发布，但它仍然由主ViewController视图保留。

Yes, the main access to the heap area for bannerVideo was released, but it was still retained by the main ViewController View.

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