Memory Leaks in iOS: Find, Diagnose, & Fix (2022)

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2 жыл бұрын

In this video we will cover memory leaks in iOS apps. We will first do an example to leak some memory and then fix it. More interestingly, we will explore the Leaks Instrument to visualize leaks/memory addresses. Will additionally cover the visual memory object graph. We will work in Xcode 13.
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#swift #memory #debugging

Пікірлер: 60

@iOSAcademy 2 жыл бұрын

Into iOS? Lets connect! linkedin.com/in/afrazsiddiqui

@ggman8216 2 жыл бұрын

Excelent vídeo as always! One question: What is the difference between declaring the vc variable as weak to passing a weak self on to it from secondVC?

@jeffreywilkinson1471 2 жыл бұрын

A more in-depth discussion of Instruments specifically to debug memory leaks would be very helpful. I have a personal App I'm working on and I'm definitely retaining memory somewhere. It'd be nice to figure out what is going on and how to use Instruments.

@iOSAcademy 2 жыл бұрын

On my list!

@manni7317 2 жыл бұрын

Finally something that makes sense, everybody used to just give definations from google and vague answers to this question, this is such an important and vast topic, now i know what to look for, Thanks man, I repect you !

@KimbrellBrad 2 жыл бұрын

More in-depth coverage as well as how to cure these in SwiftUI would be very much appreciated! Great start and exposure to something that I have explored but not really focused on enough. Thanks!

@suryahealthcare4626 Жыл бұрын

That's good 👍 need more videos in depth for expert debugging and finding memory leaks

@robinandthedog 2 жыл бұрын

top, like always, although I think I knew most, it's nice to see it come together like this for the community. Well done!

@iOSAcademy 2 жыл бұрын

Thanks

@tuncayonal82 2 жыл бұрын

Thank you so much. I was looking for this topic for long times. Best Regards...

@iOSAcademy 2 жыл бұрын

You’re welcome

@yassinmziya2733 2 жыл бұрын

I was asked this during an interview with THE big guy. Thanks for the coverage man

@iOSAcademy 2 жыл бұрын

You’re welcome

@AmitBiswastunebox 2 жыл бұрын

Thanks a lot Afraz. It was a great topic with great explanation. Again you are the best. Please make some iOS debugging videos , tracing threads , understand how and where to fix and find out step by steps break points explanation. This memory leaks video covered one of them . Thanks a lot . You are doing fantastic. Good luck to you and your channel.

@iOSAcademy 2 жыл бұрын

Thank you!

@CJWhitaker 2 жыл бұрын

Great video, as always! Would you be willing to make the following videos please? 1. Show how to implement a loading animation that shows how many photos have been retrieved from Firebase Firestore and how many are remaining (like you see with Egnyte, for example). 2. Ask user for permission to access things such as Contacts, Photo Library, Location, and their Files. Thank you for your hard work!!

@ignaciobrambilla7126 2 жыл бұрын

👍👍👍👍👍 for more videos about this topic. Mostly to detect more complex leaks

@iOSAcademy 2 жыл бұрын

You’re welcome

@techpwynt348 2 жыл бұрын

Thank you so much for the video. Please make more videos on memory leaks.

@iOSAcademy 2 жыл бұрын

You’re welcome

@Ni7ram Жыл бұрын

loved this !

@iOSAcademy Жыл бұрын

Thanks

@guest9456 2 жыл бұрын

Thanks a lot. that was a great and important topic. great cover. my request from you is that can you make a video about searching word from string. searching a word from textView's or SwiftUI's TextEditor's text and highlight matched ones. Like we do CMD+F? or can you guide me to it?

@kironet 2 жыл бұрын

To avoid buggy false-positives in Instruments, run on an actual device instead of the simulator.

@iOSAcademy 2 жыл бұрын

Yup, the simulator is kind of annoying sometimes

@user-xx9lm5bd6k Жыл бұрын

Awsome

@iOSAcademy Жыл бұрын

Thanks

@mak_whisk 10 ай бұрын

Thanks

@iOSAcademy 10 ай бұрын

Welcome

@manojsomineni5979 Жыл бұрын

I am learning so much in tutorial iOS academy, thank you

@iOSAcademy Жыл бұрын

Glad to hear that!

@TephrosXI 9 ай бұрын

Another video that's more in depth with a potentially real-world situation would be helpful!

@arshadshaik2578 Жыл бұрын

I like your videos and i have subscribed your channel. Please make different videos for each and every feature in Instruments. Like., "Time Profiler" , "Leaks", "Allocations", "Network", "Core Data" and so on.. Thanks

@ChhayaAhuja 2 жыл бұрын

My memory graph doesnt show labels like yours. Its just few shapes with arrows but no labels. How can I see label below each shape?

@arshadshaik2578 Жыл бұрын

Nice video, but please show how to resolve memory leaks using Instruments. Thanks

@Jannemandevries 2 жыл бұрын

I created a little extension method that runs shortly after viewDidDisappear that checks if the VC still has a parent and/or a presentedViewController. If both are nil it's most probably a leak and shows you a warning (popup in debug builds) and sends a log to Crashlytics (release builds).

@intros1854 2 жыл бұрын

Great

@Jannemandevries 2 жыл бұрын

I just finished a package named LeakedViewControllerDetector that does what I described.

@shurale85 Жыл бұрын

if i am not mistaken instrument did not show memory leak of custom view, did it? there were some leaks but not related to MyView instance. The reason am interested in this video I am currently investigating my project and believe there are leaks. For one of my class deinit is not called. so i tried to figure out by using instruments/leaks. However it does not show me any leaks. really strange.

@iJigarThakkar Жыл бұрын

Same for me Xcode 14.2

@shurale85 Жыл бұрын

@@iJigarThakkar I have investigated a project with plenty of leak since weak self is missing in every single closure. You know what, Xcode 14.1 caught no of them absolutely. What is that?..

@iJigarThakkar Жыл бұрын

@@shurale85 I think there is something with either Swift 5.7 or Xcode 14, I can’t a lot to create retain cycle at all

@muradkv Жыл бұрын

Same problem, it doesn't show memory leaks at all. I am tired of looking for a solution. Xcode 14.3

@shurale85 2 жыл бұрын

One might use weak everywhere to escape leaks being not sure if it is worth to use it. I guess there are limitations, constrations and disadvantages of using weak. Can you please tell me what they are?

@iOSAcademy 2 жыл бұрын

I have a dedicated video on this

@ChristopherCricketWallace Жыл бұрын

how do you find a leak from a closure that's executed on the background thread?

@kyahlodi2006 2 жыл бұрын

Hello, I always watch your video. I just want to ask for a fix or any workaround about the memory leaks in google maps sdk in ios. I can't find any working solution.

@iOSAcademy 2 жыл бұрын

Unfortunately you cannot easily fix a leak in someone else’s code

@kyahlodi2006 2 жыл бұрын

@@iOSAcademy I see. So it is on google map sdk side? What I did is I stop the updating(CLLocationManager) after the first load, and then when saving I start again to update at the back so I can have the newest and current location. If you have a better workaround, will gladly appreciate it. Anyways, thank you very much for your reply. Really appreciate it. Keep up!