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I just checked out a couple of Flutter’s showcase apps on iOS. The scrolling in the Hamilton app was atrociously stuttery, just really broken. This is on an iPh

I just checked out a couple of Flutter’s showcase apps on iOS. The scrolling in the Hamilton app was atrociously stuttery, just really broken. This is on an iPhone X. Then I opened it again and it was fine. Seems like it was doing some initialization work that was blocking the main thread. Not sure if it’s Flutter’s fault but I never see broken scrolling like that on native apps. The other app I tried was some journaling app. Both of them used unconventional UI. Are there any good examples of native performing and looking Flutter apps? EDIT: Apparently somebody downvoted this? What’s up with that?

yunyu 7y ago
iOS perf on Flutter has been broken for a while: https://github.com/flutter/flutter/issues/813 https://github.com/flutter/flutter/issues/813 https://github.com/flutter/flutter/issues/28113 https://github.com/flutter/flutter/issues/28113 I wish the team would prioritize this more, but I guess that's Google for you.
- Bahamut 7y ago
  Non-charitably, Google probably has an interest in not prioritizing iOS. Realistically, I'd imagine that Google prioritizes less there because a lot of preference for iOS dev is to just go full native. I do wonder how much Flutter is used by Google for iOS apps though then.
  - StreamBright 7y ago
    Then they can stop claiming real cross platform solution. To be hones this is exactly the reason I am sceptical to use any of their projects. I never seen something like that from other companies who produce engineering tools like Flutter for example.
  - danbalthasar 7y ago
    Full disclosure: I'm a Flutter team member who has focused specifically on iOS development. There are a number of us dedicated to this on the team internally at Google. It's definitely a priority. Each platform has its own challenges though, and there's a very wide variety of issues that can arise that are platform specific. The more feedback we can get about what people want to do that isn't working, the more we can address it :)
  - saagarjha 7y ago
    Doubt it. Google is interested in supporting iOS, from what I see, but they don’t own the OS and it’s really hard getting the details right.
- abalone 7y ago
  Ah, thanks for the links. So jitteriness is a known issue. FWIW I doubt it’s that Google doesn’t care about iOS.. it’s kind of the raison d’être for Flutter, no? Probably has more to do with it being really hard to reinvent a drawing layer from scratch on an OS you don’t control or whatever it is they’re doing. They could be trying their best and just be hitting a wall. Often happens with cross platform frameworks.
- Hixie 7y ago
  We've done significant work on that particular issue in the past few months (primarily, caching compiled skia shaders). The issue wasn't iOS specific. If you have cases that are still problematic on the master channel (on iOS or elsewhere) please please please file a new bug with a test case so we can track down the issue.
  - yunyu 7y ago
    I'm currently writing a test app that exhibits the issue on Flutter master, will get it to you guys shortly. This is already stated in the GitHub thread, but stuttering on open/app switch tends to happen with anything more complicated than a ListView with simple text content.
  - artichikin 7y ago
    We logged a similar issue -- iOS keyboard is severely laggy since v1.3.14: https://github.com/flutter/flutter/issues/31138 https://github.com/flutter/flutter/issues/31138 My guess is it's related to the other more general jank as well, but a severe example.
gaara87 7y ago
https://n8.to/ https://n8.to/ that's a brand new app still in development, but I think it's worth seeing what it's capable of
- dkobia 7y ago
  Beautiful!
- abalone 7y ago
  Thank you, this is pretty, but it is also non-standard UI so it's not what I mean by a "native looking" app. I understand Flutter has some native-looking widgets so I'm curious how they work out in practice.

yunyu 7y ago

iOS perf on Flutter has been broken for a while: https://github.com/flutter/flutter/issues/813 https://github.com/flutter/flutter/issues/813 https://github.com/flutter/flutter/issues/28113 https://github.com/flutter/flutter/issues/28113 I wish the team would prioritize this more, but I guess that's Google for you.

Bahamut 7y ago
Non-charitably, Google probably has an interest in not prioritizing iOS. Realistically, I'd imagine that Google prioritizes less there because a lot of preference for iOS dev is to just go full native. I do wonder how much Flutter is used by Google for iOS apps though then.
- StreamBright 7y ago
  Then they can stop claiming real cross platform solution. To be hones this is exactly the reason I am sceptical to use any of their projects. I never seen something like that from other companies who produce engineering tools like Flutter for example.
- danbalthasar 7y ago
  Full disclosure: I'm a Flutter team member who has focused specifically on iOS development. There are a number of us dedicated to this on the team internally at Google. It's definitely a priority. Each platform has its own challenges though, and there's a very wide variety of issues that can arise that are platform specific. The more feedback we can get about what people want to do that isn't working, the more we can address it :)
- saagarjha 7y ago
  Doubt it. Google is interested in supporting iOS, from what I see, but they don’t own the OS and it’s really hard getting the details right.
abalone 7y ago
Ah, thanks for the links. So jitteriness is a known issue. FWIW I doubt it’s that Google doesn’t care about iOS.. it’s kind of the raison d’être for Flutter, no? Probably has more to do with it being really hard to reinvent a drawing layer from scratch on an OS you don’t control or whatever it is they’re doing. They could be trying their best and just be hitting a wall. Often happens with cross platform frameworks.
Hixie 7y ago
We've done significant work on that particular issue in the past few months (primarily, caching compiled skia shaders). The issue wasn't iOS specific. If you have cases that are still problematic on the master channel (on iOS or elsewhere) please please please file a new bug with a test case so we can track down the issue.
- yunyu 7y ago
  I'm currently writing a test app that exhibits the issue on Flutter master, will get it to you guys shortly. This is already stated in the GitHub thread, but stuttering on open/app switch tends to happen with anything more complicated than a ListView with simple text content.
- artichikin 7y ago
  We logged a similar issue -- iOS keyboard is severely laggy since v1.3.14: https://github.com/flutter/flutter/issues/31138 https://github.com/flutter/flutter/issues/31138 My guess is it's related to the other more general jank as well, but a severe example.

gaara87 7y ago

https://n8.to/ https://n8.to/ that's a brand new app still in development, but I think it's worth seeing what it's capable of

dkobia 7y ago
Beautiful!
abalone 7y ago
Thank you, this is pretty, but it is also non-standard UI so it's not what I mean by a "native looking" app. I understand Flutter has some native-looking widgets so I'm curious how they work out in practice.