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xamarin.formsxamarin.iosvisual-studio-2017storyboardsplash-screen

Unable to add an image in the storyboard editor in Visual Studio to create a splash screen for Xamarin.iOS

I'm trying to add a splash screen to an iOS app built using Xamarin.Forms. I'm able to get the splash screen itself to display, but I'm unable to add an image to an ImageView in the storyboard editor.

I can replicate this behavior in a brand-new "Cross Platform" solution, and I'm following the instructions here. Specifically, at step 10 in the instructions, you're supposed to be able to select the image from a dropdown.

image property

If you actually click on the arrow of what only appears to be a dropdown, however, nothing actually "drops down"; instead VS opens an OpenFileDialog entitled "Add Existing Item".

file dialog

No matter what file I choose, VS only adds it to the project's Resource folder (as a BundleResource), but doesn't change the image in the storyboard at all.

I've tried adding the images to the Asset Catalog as both a Launch Image and a regular Image Set. I've tried typing either a filename or an asset set name into the editable part of the "dropdown"; no luck. I've also tried editing the storyboard XML to add an image= attribute (to the ImageView tag), again using either a filename or an asset set name, but it doesn't work, and subsequent saves from the storyboard editor actually remove the attribute. I also tried explicitly adding the entire "Assets.xcassets" folder to the project, as suggested by one of the answers here.

FWIW, the property labeled "Highlighted", directly under "Image", also has the same behavior. I'm assuming this is a VS bug of some sort; the behavior of the property is different not only from what's described in the docs, but conflicts with the appearance of the control.

Has anyone come across a workaround?

Windows 10 Pro
VS 2017 15.8.3
Xamarin 4.11.0.756
Xamarin Designer 4.14.221
Xamarin.iOS and Xamarin.Mac SDK 11.14.0.13

Solution

  • It is bug, you can voite to this problem https://developercommunity.visualstudio.com/content/problem/319294/xamarinios-cant-select-image-asset-for-image-view.html