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Utilizing Markdown and Attributed String in SwiftUI

Apart from all the large options reminiscent of AsyncImage and searchable, the iOS 15 SDK additionally launched some minor enhancements to streamline the event of iOS apps. On this tutorial, we’ll present you the best way to use Markdown in SwiftUI’s Textual content view.

What’s Markdown

I assume you’ve used Markdown earlier than, however in case in case you have no thought what it’s, let me offer you a fast walkthrough. Created by John Gruber, Markdown is a light-weight markup language for including formatting to a plain textual content doc. Most significantly, it lets you simply flip the formatted textual content into an HTML net web page (or different varieties of paperwork). I’ve used Markdown for years to jot down my programming books. Due to its plain textual content nature, you don’t want any particular instruments to jot down Markdown, only a plain textual content editor is sweet sufficient.

Markdown is lifeless easy to study and use. Let me present you a couple of examples. To daring some textual content, all you could do is enclose the textual content in double asterisks (**):

Equally, to make the textual content italic, you utilize a single asterisk like this:

You possibly can cross the textual content like this:

To format the textual content as a heading, you write the Markdown syntax like this:

To focus on a command or a line of code, you possibly can enclose the textual content with single backticks. Right here is an instance:

You possibly can simply embed hyperlinks in a doc by wrapping hyperlink textual content in sq. brackets (i.e. []) after which specify the URL inside parentheses. Right here is an instance:

When the textual content is rendered in HTML, it can present a hyperlink.

The above are only a few examples of the Markdown syntax. For particulars, you possibly can confer with this doc on GitHub.

Utilizing Markdown in SwiftUI

I consider you need to have some concepts about Markdown. So, how are you going to use Markdown in SwiftUI growth? Ranging from iOS 15, SwiftUI comes with built-in assist for this markup language. You possibly can simply format textual content utilizing Markdown with the Textual content view.

To do this, all you could do is move the Textual content view with textual content in Markdown syntax. Here’s a pattern code snippet:

Should you enter the code in your SwiftUI undertaking, Xcode will mechanically format the textual content.


After all, you possibly can format a paragraph of textual content utilizing Markdown. Right here is one other instance:


Working with AttributedString

AttributedString in iOS 15, which is the Swift model of NSAttributedString, additionally has a built-in assist of Markdown. To create an attributed string in Markdown, you write the code like this:

And, you possibly can combine Markdown and apply your most well-liked styling to the textual content. Right here is an instance that highlights some textual content with numerous colours:

SwiftUI’s textual content part has a built-in assist for AttributedString. You possibly can merely move it to the Textual content view for rendering.


Present Limitations

The present model of Swift doesn’t assist all of the Markdown syntax. For instance, it may possibly’t render heading, numbered checklist, and picture. Hopefully, Apple will present additional enchancment in future updates of SwiftUI.

Founding father of AppCoda. Writer of a number of iOS programming books together with Starting iOS Programming with Swift and Mastering SwiftUI. iOS App Developer and Blogger. Comply with me at Fb, Twitter and Google+.



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