Frame style in App class ignored

[JohnHDev]

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Description

Im creating a default style for Frame to remove corner radius and adding to the App.Resources dictionary. But the style isn't picked up.

Steps to Reproduce

New Maui app, add a frame to a page so you can see it.

In the App class, add the following code to the constructor:

        var frameStyle = new Style(typeof(Frame))
        {
            Setters =
            {
                new Setter { Property = Frame.CornerRadiusProperty, Value = 0 }
            }
        };

        Resources.Add("frameStyle", frameStyle);

I would expect the frame to have a zero for corner radius but is ignored. Interestingly Resources is already set and contains values, where in XF the instructions tell us to create a new ResourceDictionary. If I do that then many other controls will look wrong for the existing default settings.

In Maui how should this work? I want to set a global style at the app level.

Version with bug

6.0 (current)

Last version that worked well

Unknown/Other

Affected platforms

Android

Affected platform versions

Android, didn't try other platforms

Did you find any workaround?

Not really, creating a new Resources dictionary and added the style to that works, but then labels aren't appearing correctly.

Relevant log output

No response

[ToolmakerSteve]

Possible work-around is to create new dictionary, then use MergedDictionaries to append to existing one.

But I wouldn't expect that to work any better than what you did.

I wonder if doing it in the constructor is "too early". Perhaps there is a default Frame style that gets added by Maui "after" that.

[VincentBu]

repro with vs main build 32607.514

[JohnHDev]

@jsuarezruiz when might this get picked up? It is disheartening to see so many simple issues not being resolved in a timely manner.

[JohnHDev]

@jfversluis can you confirm how/if this should work? We have a lot of default styles setup this way in Xamarin Forms, if this isn't how we should be doing it Maui then what is the correct way?

[jfversluis]

It would greatly help if you could add a little reproduction project to see how this all fits together and make sure we're looking at the right thing.

Is this only happening for a Frame or also others? Did you remove the default styling in the template that is in place for a File > New Project? Is this happening only on Android or also others?

[ghost]

Hi @JohnHDev. 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.

[JohnHDev]

@jfversluis I have just pulled the original code, upgraded to .net 7, and it is all working now as expected.

We can now migrate from Frame to Border, andI can now set a default style for all Border instances (and derived types) to work around a separate issue where Border doesn't occupy the same space as a Frame, but it does mean we can take another look at Maui.

Thanks! John

[jfversluis]

Perfect, thanks for letting us know!