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Adding iPad Pro app icons (167x167) is not possible from the xcasset editor for Visual Studio. There is no button to select the icon and when I select the icon using Xamarin Studio on Mac it is removed from the Contents.json file when I add/change other icons in Visual Studio later on.
Created attachment 17566 [details]
iPad Pro App icon when "iPad - iOS 7.0 and Later" is "True"
> Adding iPad Pro app icons (167x167) is not possible from the xcasset
> editor for Visual Studio. There is no button to select the icon
For this fist "half" of the reported problem, the answer is hopefully just that you will need to set "iPad - iOS 7.0 and Later" to "True" under the "Properties" panel (when the Asset Catalog as a whole is selected).
(See also the attached screenshot.)
> when I select the icon using Xamarin Studio on Mac it is removed from the
> Contents.json file when I add/change other icons in Visual Studio later on.
I haven't tested that cross-IDE scenario yet, so this second symptom will quite possibly still need further investigation. I will leave the bug as "new" for now pending a test of that scenario by a member of the Xamarin team.
Created attachment 17609 [details]
xcasset ipad pro german
Sorry, I didn't see that option. Maybe make it the default for new appimage asset catalogs?
I have recreated the catalog, but it still doesn't work. The created Contents.json file contains this entry:
where it should be "83.5x83.5" (my computer is set up with german regional settings, I assume the double to string conversion is buggy).
This results in a rejection of my app: Missing required icon file. The bundle does not contain an app icon for iPad of exactly '167x167' pixels, in .png format for iOS versions supporting iPad Pro.
When I change the line to use . instead of , it works.
Also see the attached screenshot - I can select an image, but the description is "unknown".
Try to close Visual Studio, set your system to English regional settings and open the project again. You will have to set the icon again, but it will work after you rebuild the project. See my reported bug.
*** This bug has been marked as a duplicate of bug 45257 ***