Why buildTransition on screen navigation even Hero animation is never smooth at first run?
How to make a prefect smooth animation always?
Kind Regards
You need to build with --release or --profile. If you run from IDE you'll get a --debug build by default, which is unsuitable to measure any performance metrics or animations or build output size.
flutter run --profile
More details in https://flutter.io/docs/testing/ui-performance
This is a known issue in flutter where you have to "warm-up" the graphic api (SkSL) first. After a third run, usually it will become smooth.
The problem happens in both iOS an Android.
For iSO, the lag usually occurs in metal api as Apple has recently dropped support for OpenGL which is usually where the Skia graphic engine is implemented.
Work around and temporary solution are found on this page.
Extreme jank on iOS/Android the first time any kind of animation or transition runs (release build) - skia shader compilation #61450
Update
Flutter has updated their official docs on this issue
Reduce shader compilation jank on mobile
Related
I tried to develop an application and was warming up all the rives files on app launch so that the rive animations could play properly. But during the gameplay, as you see more and more rive animation it was consuming more graphics memory (checked using the Android profile tool).
So after going through a lot of docs I found the possible fix.
Adding FlareCache.doesPrune = false;
To make an animation which can be used as splash screen for Android & iOS, I was thinking about using lotties (explained in this tutorial), but with Android 12 it seems like the tools used are deprecated and it's not really a good solution anymore.
I found this workaround to still make it work, but from what I understand, the splash screen is now waiting for the animation to finish, which I know is a bad practice and I don't really want to do that (maybe there is a way to interrupt it?).
I have seen some packages on pub.dev, but the animated ones seem to not really replace the launch screen (the white screen by default) and just start after it.
So my question is : is there any other way to create one animation which can be used both on Android & iOS? (which would be a looping animation, interrupted when the app is ready).
am using the animations package in flutter for default animations but by using open container method from a listView item to a screen the animations are not smooth without any errors.
please help me guys.
Are you running the app in the iOS Simulator or Android Emulador? The Simulator/Emulator performance is not representative of real devices, so you should always test the app's performance on an actual device.
If not, are you running the app in debug mode? Debug mode is not optimized, and often the animations will be janky. Instead, try running your app on an actual device and in release mode (flutter run --release).
Recently, I have used flutters navigation.It works good but it lags even on my physical device. I was thinking to change it to pageview but than I have second thoughts so I decided to use its navigation.How can I make smooth navigation?.
You were probably using the debug mode on your device. Connect your device and run the command flutter run --releaseto deploy the app in release mode to your device, it shouldn't lag like that - if it does you might have some work running on your UI thread in an awkward way.
It's not recommended to use pageview for the entire app navigation as those views will be kept in memory.
To check the fps or the performance of your flutter app, run your app in profile mode instead of release mode. You will be able to see the rendering time of your frames in profile mode. For more info, visit https://flutter.dev/docs/testing/ui-performance.
In my game, UI elements not rendering properly on an Android device.
But it working properly within Unity Editor.
Here is the example of this problem I am facing:
I have purchased old source code and then upgraded its source code to Unity 2018 version.
I have implemented a Canvas based UI system from scratch and completed all UI screens.
At last, I have run the game in actual Android device but I was shocked by getting above result.
I have checked all things as per my knowledge but all properties values are proper.
Here you have one object selected to show its inspector.
So please give me some suggestion to correct above problem.
Make sure the UI/Default shader is present. Project Settings > Graphics > Built-in Shader Settings