I checked my application's memory leaking problem and these memory leaks are found.
How can I solve these memory leak?
I used Leaks tool in Instruments. Here are the screenshots
Screenshot 1
Screenshot 2
Switch to the Call Tree, select the options indicated in screenshot, then double click the code line.
I have a Viewcontroller which contains wkwebview when I pop it from the navigation controller I get memory leak
The stack trace leads WkWebview instantiation
I am not using any delegates as well.
I am really wondering what causes this and how to fix this
It is not observed for a long time (at least I can't remember when I met it last time). Just tested in Xcode 11.2 / iOS 13.2. No leaks - neither in simple test project nor in Playground.
Thus, I assume it should be analysed real usage, which introduces leak.
Im experiencing memory leak on static menu scene, it appears that it happens on every scene, game scene itself but also static menu/gameover. Memory appears to be deallocated correctly (and it's reduced when scene is gone).
Those static scenes does not conatins even update callback defined.
It's all setup in didMoveToView and inside it there are couple SKLabelNodes and SKSpriteNode allocated with spriteNodeWithImage.
I have tried to use dealloc to monitor if scene got's deallocated correctly, and it appears to be so it seems it's not the source of the issue.
Browsing google pointed me to some other threads created on stackoverflow that
spriteNodeWithImage
textureWithImage
May cause
-Memory leaks
-weird error "CUICatalog: Invalid Request: requesting subtype without specifying idiom"
So i have tried to create UIImage imageNamed and then put in into texture and use in SKTexture, actually it has removed CUICatalog error (which anyway, seems like a stupid message which did not been removed by apple - can anyone confirm that ?)
But according to memory leaks this didn't help at all, and anyway anything in that scene is being created once on beginning so i have no idea why this memory keeps growing and growing like 0,5mb per sec.
Looking forward for any tips.
Best regards
Actually i have found the source of the problem.
It seems debugging physics makes huge memory leak
skView.showsPhysics = YES;
It's not a big problem since it happens while debugging only when showsPhysics=YES.
But good to know anyway.
I have an iPhone app, that seems to have memory leaking problem. It's a puzzle game, after a few puzzles, the app crashes on devices.
I'm now trying to use xcode Instruments to detect what's going on. First time to use Instruments.
I noticed a leak bar in the "Leaks" plot, right the time when the view is loaded:
What are these memory leaking objects, detected by xCode Instruments?
. However these leaked objects are small, so I guess my app has other problems.
When my app continues to run, usually for 10+ rounds on an iPad 2, it then crashes. I don't much about Instruments yet, so I watch "All Heap Allocations". At the beginning of first round puzzle, the column "# Overall" is ~70k, it grows slowly between rounds of puzzles. When a new round puzzle comes in, it goes to ~90k, then round by round it reaches ~200k, then crashes.
Before crashes, in the log console I see memory warning and "CONNECTION INTERRUPTED".
I've followed a few things after searching memory leaking, such set NSArray/NSDictionary or mutable ones to nil, as much as possible (although not all of them, since some go between puzzles). I also changed UIImage imageNamed to [UIIMage alloc] initWithContentOfFile.
What else should I look/check to see what causes memory problem? TIA!
EDIT:
I wish I could post some codes that may be the suspect, but I really don't know what part to post. I should've check via Instruments in the course developing, so that I would know what caused the problem.
Regarding other view controllers. I do have others (menu, settings, app-store-rate, etc) and I generated all of them via code. My app doesn't have a storyboard or nib file. When I test crashes, I just click Next Puzzle button, so all other views will not show at all. So, before crash, the only view shown is the main view, with a few button, a few subviews, an animated pictures (but only the first puzzle as introduction). If it helps, here is my app:
http://itunes.apple.com/us/app/wordsect/id599455449?ls=1&mt=8
If you trying to debug application with Instruments - enable zombie detection mode:
In
Xcode: Product->Scheme->Edit Scheme
Select Debug scheme
Select Arguments tab bar on the scheme description
In Environments variables add and check NSZombieEnabled variable
Then when you start application under Instruments control, you'll get name of the instance, when your application crashed.
I am creating an app with an UIViewController which displays other UIViewControllers with the MPFlipTransition inside it. It's like a little book on iPad.
The UIViewControllers inside are created each with xibs with 4-5 UIImageViews inside and some of those images are animated with CoreAnimations ([UIView animateWithDuration] blocks)
I remove all the animations in the viewDidDiseappear function with the QuartzCore function removeAllAnimation on each animated layer.
But when I'm testing the app on an iPad 3, it works properly, but on iPad 2 it crashes at about the 8th page change.
I've made a profiling with Instruments and found that the real memory usage was increasing everytime I turned the page (when the MPFlipTransition appears). But even if I remove from the superview the previous views, the real memory usage is not decreasing. I thinks that it created the crash on the iPad 2 because the crash come when the real memory usage is passing the 400 Mbytes value (and the iPad 2 has only 512MB...).
What do you think about this problem ? Any help ? I'm using ARC for memory management...
Thanks for you help ! Feel free to ask if any need of precisions...