WidgetKit: Get size of the widget for placeholder view

Question

Created Jul ’20

Replies 3

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Views 5.1k

Participants 2

Hey,

I need to know the size of the widget in advance in order to create a proper UI for my widget. This works great by using the displaySize property provided by the TimelineProviderContext.

However so far I did not find any way to get the widget size for my placeholder view. Since I don't have a provider, I have no TimelineProviderContext and thus no displaySize.

Is there any way to know the widget size in the placeholder?
Here is a code snippet where I would need to pass the widget size to the PlaceholderView view:

Code Block swiftstruct MyWidget: Widget {
	public var body: some WidgetConfiguration {
		StaticConfiguration(kind: myWidgetKind, provider: Provider(), placeholder: PlaceholderView()) { entry in
			WidgetEntryView(entry)
		}
		.configurationDisplayName("Display Name")
		.description("Description")
		.supportedFamilies([.systemSmall, .systemMedium])
	}
}

Thanks in advance!

Boost

Answer 1

Apple dicker OP

Jul ’20

Try this:

Code Block GeometryReader { geo in
	Image(uiImage: UIImage(data: UserDefaults.standard.data(forKey: "ImageData")!)!)
		.resizable()
		.scaledToFill()
		.frame(width: geo.size.width, height: geo.size.height)
		.clipped()
}

0

Answer 2

Timac OP

Jul ’20

Thanks for the suggestion. However this approach would not help me since I want to generate different image data depending on the widget size. The suggested approach is taking one image and scaling it to fit the widget which is slightly different.

0

Answer 3

Timac OP

Jul ’20

It appears that this issue has been addressed in Xcode 12.0 beta 3 with the new placeholder APIs. The provider should now implement:

Code Block public func placeholder(with: Self.Context) -> Self.Entry

Thanks to this new API, the placeholder should have access to the context and should be able to use the displaySize.

0