Snackbar and Toast messages are omitted when length is equal to display width on iOS

[cat0363]

If the Snackbar message length is the same as the display width, the end of the message is omitted.
This PR fixes the problem that the end of the message is omitted when the length of the Snackbar or Toast message is close to the display width.

Description of Change

Auto width adjustment of UILabel now works when Snackbar or Toast message length is close to display width.

[CommunityToolkit.Maui.Core.Views.PlatformToast.macios.cs]

public PlatformToast(
    string message,
    UIColor backgroundColor,
    CGRect cornerRadius,
    UIColor textColor,
    UIFont font,
    double characterSpacing,
    NFloat padding)
{
    padding += DefaultPadding;

    messageLabel = new PaddedLabel(padding, padding, padding, padding)
    {
        Lines = new IntPtr(0),
        AdjustsFontSizeToFitWidth = true
    };

    Message = message;
    TextColor = textColor;
    Font = font;
    CharacterSpacing = characterSpacing;
    AlertView.VisualOptions.BackgroundColor = backgroundColor;
    AlertView.VisualOptions.CornerRadius = cornerRadius;
    AlertView.AddChild(messageLabel);
}

I was set the value of the messageLabel's AdjustsFontSizeToFitWidth property to true.

As a result, if the length of the message is close to the display width, the width of the UILabel will be automatically adjusted and the font size may be slightly reduced, but the end of the message will not be displayed omitted.

Linked Issues

• Fixes [BUG] Snackbar and Toast messages are omitted when length is equal to display width on iOS #1280

PR Checklist

• Has a linked Issue, and the Issue has been approved(bug) or Championed (feature/proposal)
• Has tests (if omitted, state reason in description)
• Has samples (if omitted, state reason in description)
• Rebased on top of main at time of PR
• Changes adhere to coding standard
• Documentation created or updated: https://github.com/MicrosoftDocs/CommunityToolkit/pull/XYZ

Additional information

Below is the execution result.

[Snackbar]
Message : 1234567890ABCDEFGHIJKLMNOPQRSTUVW

Message : 1234567890ABCDEFGHIJKLMNOPQRSTUVWXY

Message : 1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZ

[Toast]

Message : 1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZ

Message : 1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZ123

Message : 1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZ1234

If the length of the message is close to the display width, the UILabel's automatic width adjustment will work and the font size will be slightly smaller, but you can see from the execution result that the end of the message is displayed without omitting it.

The following is the verification result when the Font Size is set to 30.

[Snackbar]

Message : 1234567890ABCDEF

Message : 1234567890ABCDEFG

Message : 1234567890ABCDEFGH

[Toast]

Message : 1234567890ABCDEFGH

Message : 1234567890ABCDEFGHI

Message : 1234567890ABCDEFGHJ