Change the title font on a MobileScreen (iOS)

Targets iOS
1

Hi,

does somebody know a way to change the title font on a MobileScreen?

I already had a look at the iOSDesignExtensions but there is no extension for it.

Thanks a lot.

2

I turn off the Navigation Bar and use a label for the title.

3

I haven’t looked into this yet as it is quite complicated to do in Xojo and there are many declares involved.

4

It would also be nice to be able to use SF Symbols icons for Toolbar buttons!

1 Like
5

That is possible already using Picture.SystemImage(“SF Symbol Name”, Size)

For example:

Var MainMenuButton As New MobileToolbarButton(MobileToolbarButton.Types.Custom, "", Picture.SystemImage("line.3.horizontal", 16))
MainMenuButton.Tag = "mainmenu"
Screen.LeftNavigationToolbar.AddButton(MainMenuButton)
2 Likes
6

When using SF Symbols in MobileToolbarButtons I recommend using size 0.
Like this:

Var MainMenuButton As New MobileToolbarButton(MobileToolbarButton.Types.Custom, "", _
  Picture.SystemImage("line.3.horizontal", 0)) //Use size 0 here
MainMenuButton.Tag = "mainmenu"
Screen.LeftNavigationToolbar.AddButton(MainMenuButton)

Also note that SF Symbol images are available starting from iOS13.
If you do not specify a fallback image, it is better to set the minimum version to 13.0 in the iOS build settings:

Screenshot 2024-09-01 at 19.10.03
Screenshot 2024-09-01 at 19.10.03598Ă—606 43 KB

In the past year, 0.05% of my users are still on iOS 11 or iOS 12.
I will be dropping iOS11 and iOS12 support very soon for all my apps.

Screenshot 2024-09-01 at 19.21.53

1 Like
7

Thanks. I’m 72, so I forgot. :wink:

8

Although most symbols are available in iOS13, each year they add new ones that I believe require the iOS version from that year to use. Luckily, the inspector for a symbol in SF Symbols tells you the minimum.

9

You are correct.

That’s why my code is full of Nil checking for pictures:

Dim pic As Picture = Picture.SystemImage("checkmark.circle.badge.xmark", 0, Picture.SystemImageWeights.Semibold, &cFFFFFF)
if pic is nil then
  //Fallback for iOS13
  pic = Picture.SystemImage("circle", 0, Picture.SystemImageWeights.Regular, &cFFFFFF)
end if

if pic is nil then Return nil //Fallback for iOS12
1 Like