objective c - Core Data won't release UIImage data from memory (ImageIO_PNG_Data) - Stack Overflow

 

ios imageio_png_data

iOS 内存占用问题之 ImageIO_PNG_Data 问题来源. 做APP调试的时候,发现总是收到 didReceiveMemoryWarning,打开 Instruments 的 Memory Leaks 一看,ImageIO_PNG_Data 占了好大的内存(近MB)。 其实这个问题零零碎碎地在很多地方都有人提到过,但是提到 ImageIO_PNG_Data 似乎不多,碰到问题的时候不好搜索,这里着重提. Jan 14,  · The unreleased data presents as ImageIO_PNG_Data in instruments. Typically they are MB as they were captured by the camera (5s) and I assume that's their fully decompressed size. Typically they are MB as they were captured by the camera (5s) and I assume that's their fully decompressed size. May 25,  · ImageIO_PNG_DATA keeps on growing after application is moved from background to foreground. This will keep your single-use image out of the system image cache, potentially improving the memory use characteristics of your app.". So, if your images are not re-used, you should use imageWithContentsOfFile: instead of imageNamed.


[iOS] imageIO_PNG_Data가 메모리에 상주하고 있는 이유


By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. I have an application in which i am using lots of images but i have found an abnormal issue with the application memory footprints.

I am using imageNamed method to initialise UIImage objects. From the documentation i have read that imageNamed keeps the memory in cache and does not reload the images every time, ios imageio_png_data.

This works for me because my application is based on images only but ios imageio_png_data my case it seems that each time my application is moved from background to foreground the images are loaded again. At some places i read that ios imageio_png_data should use imageWithContentsOfFile to avoid this issue but I am not sure that whether this is a right approach or not. This will keep your single-use image out of the system image cache, potentially improving the memory use characteristics of your app.

Another ios imageio_png_data is that both methods create autorelease objects. Even if these objects are no longer used, ios imageio_png_data, they are deleted from memory only when the autorelease pool is drained. If you did not set up your own autorelease pool, ios imageio_png_data, it might be drained rarely. You would possibly use less memory, if you set up your own autorelease pool using a block like.

Learn more. First 10 Free. Asked 5 years, 3 months ago. Active 5 years, 3 months ago. Viewed 2k times. Please guide me regarding the same. Vishal Dwivedi Vishal Dwivedi 11 2 2 bronze badges. Thanks for the quick reply Reinhard but my images are the ones that are used on many views so i want them to remain in cache so that they are not loaded from disk every time.

Therefore imageNamed suits my requirements. Also I am not sure how i would use autoreleasepool for all the images which i am assigning to my UI components. Please guide me on this.

If you re-use your images often, then setting up an autorelease pool won't help. It is useful only if autorelease objects are instantiated for short-time usage, ios imageio_png_data. Sign up or log in Sign up using Google.

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Memory problem or leak on iOS 7 ? · Issue # · SDWebImage/SDWebImage · GitHub

 

ios imageio_png_data

 

Sep 26,  · I use OLImage in the viewB's drawRect method to load a local gif image. I use a normal ViewA to push ViewB, and pop ViewB repeatedly. After about 20 . May 25,  · ImageIO_PNG_DATA keeps on growing after application is moved from background to foreground. This will keep your single-use image out of the system image cache, potentially improving the memory use characteristics of your app.". So, if your images are not re-used, you should use imageWithContentsOfFile: instead of imageNamed. iOS 内存占用问题之 ImageIO_PNG_Data 问题来源. 做APP调试的时候,发现总是收到 didReceiveMemoryWarning,打开 Instruments 的 Memory Leaks 一看,ImageIO_PNG_Data 占了好大的内存(近MB)。 其实这个问题零零碎碎地在很多地方都有人提到过,但是提到 ImageIO_PNG_Data 似乎不多,碰到问题的时候不好搜索,这里着重提.