使用Push Segues时iOS摄影画廊内存泄漏/崩溃

Question

I've created a small photo gallery which is presenting a new view controller with a larger version of the photo and some additional text when it is clicked:

The problem is - after going through a handful of images - the application crashes due to overuse of memory. I attempted to resolve this by compressing the images in order to leave a smaller memory footprint, but the issue remains and I'm not sure what else I can do to resolve this issue.

Also - there is almost no code to doing this since I'm using storyboard's push segues as well as the built in navigation item to go back between viewControllers.

PS

If you feel source code is necessary to provide insight in this instance - it can be found here:

https://www.dropbox.com/s/q1qq8pq4tzv8wyo/EXAMPLE%20BUILD.zip?dl=0

Answer 1

To resolve this issue you have to use this trick; Put a "placeHolder" image in your cell's imageview in "StoryBoard". Don't load the images all at once in your "ViewController", load them one by one by running a loop or in your "cellForRowAtIndexPath()" method and add a delay in each iteration (Load first image then add a delay, load second image and add a delay, then for third one and so on up to the last image).

If you want to know how to add a delay then check this link:

NSTimer - how to delay in Swift

Answer 2

To resolve this issue I simply resized the images - I noticed I accidentally used a gigantic (6000 x 4000) image and even though I compressed the images iOS had to crunch pretty hard to resize them into the view... thereby causing the memory leak and subsequent crash.

Resizing them to 600x400 did the trick.