Use PreferenceKeys to pass images up the view hieararchy.

[maciekish]

Hi,
Thanks for making this great library. I have used it a lot but always face the same issue. I have a complex view hiearachy and more often than not the image i want to display lives in code several view hiearchies away from the nearest NavigationView. This makes it a pain to pass it upp all the way using $bindings. So i created some support that uses PreferenceKeys to bubble the image up the view hiearchy.

Usage

Where you have your image for display, you would use the .viewImage(image: UIImage?) modifier to request an image to be displayed like so:

Image(uiImage: image)
.onTapGesture {
    viewImage = image
}
.viewImage(image: viewImage)

And anywhere higher up in the view hiearchy (in a different file) you can just attach the .imageViewier() modifier to display that image.

NavigationView {
    ...
}
.imageViewier()

And that's it. No more passing images around manually.

[Jake-Short]

Typo, change imageViewier to imageViewer.

[Jake-Short]

Thanks for working on this addition, it looks great so far! One comment I left above is just a small typo (imageViewier). Another change I think would be good is to use the SwiftUI Image rather than UIImage to stay consistent with using Image elsewhere in the package.

[Jake-Short]

Fix typo (see comment) and change UIImage to Image

[X901]

This is a great idea!
after I tried I found some bugs,

Sometime it will open the image after scrolling ! not when I tap on the image
Always if I tap on image once, it won't open again
what I mean is it will open first time only !

the great think about this solution, I can get the image from cardView
then show ImageViewer inside TapView, that will solve issue Imageviewer won't appear overlay TabView !