In iOS 16, SwiftUI comes with a brand new view known as ShareLink. When customers faucet on the share hyperlink, it presents a share sheet for customers to share content material to different functions or copy the information for later use.
The ShareLink view is designed to share any sorts of knowledge. On this tutorial, we are going to present you learn how to use ShareLink to let customers share textual content, URL, and pictures.
Primary Utilization of ShareLink
Let’s start with an instance. To create a share hyperlink for sharing a URL, you may write the code like this:
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struct ContentView: View { Â Â Â Â personal let url = URL(string: “https://www.appcoda.com”)! Â Â Â Â Â var physique: some View { Â Â Â Â Â Â Â Â VStack { Â Â Â Â Â Â Â Â Â Â Â Â ShareLink(merchandise: url) Â Â Â Â Â Â Â Â } Â Â Â Â } } |
SwiftUI robotically renders a Share button with a small icon.
When tapped, iOS brings up a share sheet for customers to carry out additional actions resembling copy and including the hyperlink to Reminders.
To share textual content, as an alternative of URL, you may merely cross the a string to the merchandise parameter.
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ShareLink(merchandise: “Take a look at this new characteristic on iOS 16”) |
Customizing the Look of Share Hyperlink
To customise the looks of the hyperlink, you may present the view content material within the closure like this:
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ShareLink(merchandise: url) { Â Â Â Â Picture(systemName: “sq..and.arrow.up”) } |
On this case, SwiftUI solely shows the share icon for the hyperlink.
Alternatively, you may current a label with a system picture or customized picture:
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ShareLink(merchandise: url) { Â Â Â Â Label(“Faucet me to share”, systemImage:Â Â “sq..and.arrow.up”) } |
When initializing the ShareLink occasion, you may embody two extra parameters to supply further details about the shared merchandise:
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ShareLink(merchandise: url, topic: Textual content(“Take a look at this hyperlink”), message: Textual content(“If you wish to be taught Swift, check out this web site.”)) { Â Â Â Â Picture(systemName: “sq..and.arrow.up”) } |
The topic parameter permits you to embody a title in regards to the URL or any merchandise to share. The message parameter lets you specify the outline of the merchandise. Relying on the actions the consumer shares to, iOS will current the topic or message or each. Say, when you add the URL to Reminders, the Reminders app shows the preset message.
Sharing Photographs
Aside from URLs, you may share photos utilizing ShareLink. Here’s a pattern code snippet:
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struct ContentView: View {     personal let photograph = Picture(“bigben”)      var physique: some View {         VStack(alignment: .main, spacing: 10) {             photograph                 .resizable()                 .scaledToFit()              ShareLink(merchandise: photograph, preview: SharePreview(“Large Ben”, picture: photograph))          }         .padding(.horizontal)     } } |
For the merchandise parameter, you specify the picture to share. And, you present a preview of the picture by passing an occasion of SharePreview. Within the preview, you specify the title of the picture and the thumbnail. Whenever you faucet the Share button, iOS brings up a share sheet with the picture preview.
Conforming to Transferable
Aside from URLs, the merchandise parameter accepts any objects that conforms to the Transferable protocol. In iOS, the next sorts are the usual Transferable sorts:
- String
- Knowledge
- URL
- Attributed String
- Picture
Transferable is a protocol that describes how a kind interacts with transport APIs resembling drag and drop or copy and paste.
So what when you have a customized object, how are you going to make it transferable? Let’s say, you create the next Picture construction:
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struct Picture: Identifiable {     var id = UUID()     var picture: Picture     var caption: String     var description: String } |
To let ShareLink share this object, it’s a must to undertake the Transferable protocol for Picture and implement the transferRepresentation property:
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extension Picture: Transferable { Â Â Â Â static var transferRepresentation: some TransferRepresentation { Â Â Â Â Â Â Â Â ProxyRepresentation(exporting: .picture) Â Â Â Â } } |
There are a selection of Switch Representations together with ProxyRepresentation, CodableRepresentation, DataRepresentation, and FileRepresentation. Within the code above, we use the ProxyRepresentation which is a switch illustration that makes use of one other sort’s switch illustration as its personal. Right here, we use the Picture‘s built-in Transferable conformance.
Since Picture now conforms to Transferable, you may cross the Picture occasion to ShareLink:
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ShareLink(merchandise: photograph, preview: SharePreview(photograph.caption, picture: photograph.picture)) |
When customers faucet the Share button, the app brings up the share sheet for sharing the photograph.
What’s Subsequent
This tutorial reveals you learn how to use ShareLink for sharing textual content, URL, and pictures. In reality, this new view lets you share any sorts of knowledge so long as the sort conforms to the Transferable protocol.
For customized sorts, you undertake the protocol and supply a switch illustration by utilizing one of many built-in TransferRepresentation sorts. We briefly talk about the ProxyRepresentation sort. If you should share a file between functions, you should use the FileRepresentation sort. In later tutorials, we are going to talk about extra on that.