renderInContext创建未及时释放的内存

问题描述

在使用 ObjectAlloc进行仪器调试时，我注意到为renderInContext调用分配了7兆的内存，但从未释放过。当我注释掉renderInContext调用时，不会发生这种情况，以后的renderInContext调用也不会继续增加内存分配。

While debugging in instruments using 'ObjectAlloc' I'm noticing 7megs of memory being allocated for the renderInContext call, but it never is released. When I comment out the renderInContext call this doesn't happen, and future renderInContext calls does not continue to increase the memory allotment.

UIGraphicsBeginImageContext(contentHolder.bounds.size);
[contentHolder.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage *viewImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();

是否有一种方法可以强制释放此内存？

Is there a way to force this memory to be released?

推荐答案

我发现了如何释放renderInContext内存。只需在主线程上运行调用renderInContext的方法，该方法将自动释放分配的内存。

I found out how to release the renderInContext memory. Simply run the method calling renderInContext on Main Thread and that will release the allocated memory automatically.

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