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Slow content appearing in Windows

I'm testing Flutter for Windows and i noticed that, even with a basic 'HelloWorld' app, the content appears slowly, i have a 1 second blank screen inside the app (see gif below):

enter image description here

The app is packaged with default command (flutter build windows).

How can i improve performance at startup ? Is it possible to show the window when content is ready to display ? Or shall i use a splashscreen (I don't even know if this is possible with windows, and if so how) ?

Thanks to everybody!

Solution

  • How can i improve performance at startup ?

    Flutter for Windows currently only supports debug builds, which among other things means that it's using JIT compilation, not AOT as a release build of a Flutter application would. Slower startup time is one of the downsides of JIT.

    Is it possible to show the window when content is ready to display ?

    There is currently no callback hook for when the first frame is drawn, so this would be difficult, if not impossible, to do accurately.

    Or shall i use a splashscreen (I don't even know if this is possible with windows, and if so how) ?

    There is no support for splashscreens in Flutter's Windows embedding.