Add Loaded lifecycle event

[janseris]

Description

Hi, I am trying to load data when page is loaded but not in OnAppearing because everything looks frozen and laggy when UI and database is loaded simultaneously.
I can see that this issue has already existed for 4 years in Xamarin.
xamarin/Xamarin.Forms#2210
Any chance this is finally added in MAUI?
Thank you.

Steps to Reproduce

Try do stuff "OnAppeared" or in Loaded event handler similar to other desktop frameworks.
In Blazor, that is default OnAfterRender event handler on every Component/Page

Version with bug

6.0.400 (current)

Last version that worked well

Unknown/Other

Affected platforms

iOS, Android, Windows, macOS

Affected platform versions

all

Did you find any workaround?

no

Relevant log output

No response

[ghost]

We've moved this issue to the Future milestone. This means that it is not going to be worked on for the coming release. We will reassess the issue following the current release and consider this item at that time.

[ToolmakerSteve]

Definitely need OnAppeared event. I end up adding this to every XForms app I make (via code in custom renderers). Maui shouldn't need such kludges.

Also note that XF version of mvvmcross has this, and not only for pages (though on its VMs, not on the views). Therefore it is doable for ContentView as well. Probably should be optional; don't want overhead on every single sub-view of a complex layout. Actually, doing for Layout would be a decent tradeoff.

[PureWeen]

@janseris can you used SizeChanged or The Loaded event that's on every view now in MAUI?

https://learn.microsoft.com/en-us/dotnet/api/microsoft.maui.controls.visualelement.loaded?view=net-maui-7.0

[ghost]

Hi @janseris. We have added the "s/needs-info" label to this issue, which indicates that we have an open question for you before we can take further action. This issue will be closed automatically in 7 days if we do not hear back from you by then - please feel free to re-open it if you come back to this issue after that time.

[ghost]

This issue has been automatically marked as stale because it has been marked as requiring author feedback but has not had any activity for 4 days. It will be closed if no further activity occurs within 3 days of this comment. If it is closed, feel free to comment when you are able to provide the additional information and we will re-investigate.